WO2023014154A1 - 그라프트 공중합체 제조방법, 그라프트 공중합체 및 이를 포함하는 수지 조성물 - Google Patents
그라프트 공중합체 제조방법, 그라프트 공중합체 및 이를 포함하는 수지 조성물 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
- C08F279/04—Vinyl aromatic monomers and nitriles as the only monomers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/01—Processes of polymerisation characterised by special features of the polymerisation apparatus used
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F253/00—Macromolecular compounds obtained by polymerising monomers on to natural rubbers or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/14—Treatment of polymer emulsions
- C08F6/22—Coagulation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/16—Powdering or granulating by coagulating dispersions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/12—Copolymers of styrene with unsaturated nitriles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/04—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/06—Polymer mixtures characterised by other features having improved processability or containing aids for moulding methods
Definitions
- the present invention relates to a method for preparing a graft copolymer, a graft copolymer, and a resin composition comprising the same.
- ABS copolymer is prepared by graft-copolymerizing styrene and acrylonitrile with butadiene rubber polymer.
- HIPS high-impact polystyrene
- ABS copolymer has excellent impact resistance, chemical resistance, thermal stability, coloring, fatigue resistance, stiffness and processability, and is therefore excellent in interior and exterior materials for automobiles, office equipment, and various electrical appliances. ⁇ Used in parts such as electronic products or toys.
- ABS copolymers are generally prepared through emulsion polymerization and may be used as materials such as general resin compositions, flame retardant resin compositions, extruded resin compositions, heat resistant resin compositions and transparent resin compositions depending on the properties of the matrix resin to be mixed. As such, since the ABS copolymer can be used as a material in various fields, in addition to the matrix resin, efforts are being made to satisfy the physical properties required for the ABS copolymer in each field.
- the ABS copolymer basically needs to have impact resistance. Accordingly, as a way to improve the impact resistance of the ABS copolymer, when preparing the ABS copolymer, the ratio of the monomers is adjusted and the graft rate is maximized to vary the composition of the monomers graft-polymerized inside and outside the rubber particles. etc. have been suggested, but in this case, when preparing a resin composition including an ABS copolymer and a matrix resin, a decrease in fluidity may occur, resulting in a decrease in processability.
- ABS copolymer even if the same ABS copolymer is applied to a resin composition including an ABS copolymer and a matrix resin, physical properties of the ABS copolymer itself are not completely revealed depending on the type of matrix resin, as well as physical properties such as impact resistance and processability. This individual deterioration problem may occur.
- Patent Document 1 JP1994-192346A
- the problem to be solved in the present invention is, in order to solve the problems mentioned in the background art of the above invention, with respect to a resin composition including a graft copolymer and a matrix resin, regardless of the type of matrix resin, the impact properties It is to prepare a graft copolymer capable of improving processability by improving fluidity while maintaining the same or higher level.
- the present invention was made to solve the problems of the prior art, and as a method for preparing a graft copolymer for application to a resin composition including a graft copolymer and a matrix resin, impact strength and falling ball impact strength and It is an object of the present invention to provide a method for producing a graft copolymer having improved processability by improving fluidity while maintaining the same impact properties at an equivalent or higher level.
- an object of the present invention is to provide a graft copolymer prepared by the above production method.
- an object of the present invention is to provide a resin composition containing the graft copolymer.
- the present invention provides a method for preparing a graft copolymer, a graft copolymer prepared therefrom, and a resin composition comprising the same.
- a first monomer mixture and a first molecular weight modifier are collectively added and polymerized to prepare a preliminary graft copolymer latex containing a graft copolymer (S10 ); And in the presence of the preliminary graft copolymer latex prepared in step (S10), a second monomer mixture, a first molecular weight regulator, and a second molecular weight regulator different from the first molecular weight regulator are continuously introduced and polymerized to obtain a graft copolymer and preparing a graft copolymer latex comprising (S20), wherein the first monomer mixture contains 60% by weight or more and 85% by weight or less of an aromatic vinyl monomer, and 15% by weight or more of a vinyl cyan monomer.
- the second monomer mixture contains 73% by weight or more and 99% by weight or less of an aromatic vinyl monomer, and 1% by weight or more and 27% by weight or less of a vinyl cyan-based monomer.
- Graft copolymer A manufacturing method is provided.
- the conjugated diene-based polymer latex includes a conjugated diene-based polymer, and the conjugated diene-based polymer is all of the conjugated diene-based polymer, an aromatic vinyl monomer, and a vinylcyanic monomer.
- a graft copolymer manufacturing method in which 50 parts by weight or more and 80 parts by weight or less are added based on 100 parts by weight of the input amount.
- the present invention provides a method for preparing a graft copolymer according to (1) or (2) above, wherein the first monomer mixture contains 25% by weight or more and 40% by weight or less of the vinylcyan monomer. .
- the present invention according to any one of (1) to (4) above, wherein the first molecular weight modifier is t-dodecylmercaptan, n-dodecylmercaptan, octylmercaptan, carbon tetrachloride, methylene chloride, methylene bromide,
- a method for preparing a graft copolymer comprising at least one selected from the group consisting of tetraethyl thiuram disulfide, dipentamethylene thiuram disulfide, and diisopropylxantogen disulfide.
- the total input amount of the first molecular weight regulator in the steps (S10) and (S20) is a conjugated diene-based polymer, an aromatic vinyl-based monomer, and Provided is a method for preparing a graft copolymer in which 0.20 parts by weight or more and 0.40 parts by weight or less based on 100 parts by weight of the total amount of vinyl cyan-based monomers added.
- the present invention according to any one of (1) to (7) above, wherein the second molecular weight modifier is ⁇ -methylstyrenedimer, n-dodecylmercaptan, octylmercaptan, carbon tetrachloride, methylene chloride, methylene bromide, Provided is a method for preparing at least one graft copolymer selected from the group consisting of tetraethyl thiuram disulfide, dipentamethylene thiuram disulfide, and diisopropylxantogen disulfide.
- the input amount of the second molecular weight regulator in step (S20) is the total of the conjugated diene polymer, the aromatic vinyl monomer, and the vinyl cyan monomer. Based on 100 parts by weight of the input amount, it provides a method for producing a graft copolymer of 0.01 parts by weight or more and 0.40 parts by weight or less.
- the present invention is a graft copolymer prepared by the method for preparing a graft copolymer according to any one of (1) to (8), comprising: a conjugated diene-based polymer; a first graft layer formed by infiltrating the inside of the conjugated diene-based polymer or formed on the outside; and a second graft layer formed to surround the first graft layer, wherein the first graft layer contains 60% by weight or more and 85% by weight or less of aromatic vinyl-based monomer units and 15% by weight or more of 40% by weight or more of vinyl cyan-based monomer units.
- the second graft layer contains 73% by weight or more and 99% by weight or less of aromatic vinyl-based monomer units, and 1% by weight or more and 27% by weight or less of vinyl cyan-based monomer units.
- a copolymer is provided.
- the present invention provides a resin composition comprising the graft copolymer according to (9) above and a matrix resin.
- the present invention provides the resin composition according to (10), wherein the matrix resin contains an aromatic vinyl monomer unit and a vinyl cyan monomer unit.
- the present invention provides the resin composition according to (10) or (11) above, wherein the matrix resin contains an ⁇ -methylstyrene monomer unit and a vinylcyan monomer unit.
- the graft copolymer prepared from the method for preparing the graft copolymer according to the present invention maintains the same or higher impact properties regardless of the type of matrix resin with respect to the resin composition including the graft copolymer and the matrix resin. , processability can be improved according to the improvement of fluidity.
- the term 'monomer unit' may represent a component, structure, or material itself derived from a monomer, and as a specific example, during polymerization of a polymer, the input monomer participates in the polymerization reaction to form a repeating unit in the polymer. it could mean
- the term 'latex' may mean that a polymer or copolymer polymerized by polymerization is present in a dispersed form in water, and specific examples include microparticles of a polymer or copolymer on rubber polymerized by emulsion polymerization. It may mean that is present in a form dispersed in water in a colloidal state.
- composition' includes reaction products and decomposition products formed from the materials of the composition, as well as mixtures of materials containing the composition.
- the present invention provides a method for preparing a graft copolymer.
- the method for preparing the graft copolymer is a preliminary graft copolymer comprising a preliminary graft copolymer by adding and polymerizing a first monomer mixture and a first molecular weight modifier in a batch in the presence of a conjugated diene-based polymer latex.
- a second monomer mixture, a first molecular weight regulator, and a second molecular weight regulator different from the first molecular weight regulator are continuously introduced and polymerized to obtain a graft copolymer and preparing a graft copolymer latex comprising (S20), wherein the first monomer mixture contains 60% by weight or more and 85% by weight or less of an aromatic vinyl monomer, and 15% by weight or more of a vinyl cyan monomer.
- the second monomer mixture may include 73% by weight or more and 99% by weight or less of an aromatic vinyl monomer, and 1% by weight or more and 27% by weight or less of a vinylcyanic monomer.
- the method for preparing the graft copolymer is performed by preliminary graft polymerization of the first monomer mixture to the conjugated diene-based polymer through the step (S10), so that the monomer units formed from the first monomer mixture are conjugated.
- Forming a first graft layer formed by infiltrating the inside of the diene-based polymer or formed on the outside, and forming a second graft layer in a shape surrounding the first graft layer through the step (S20), thereby forming a core-shell form Graft copolymers of can be prepared.
- the steps (S10) and (S20) may be carried out continuously in performing the graft copolymerization to prepare the graft copolymer, and as a specific example, the (S10 ) in the presence of the conjugated diene-based polymer latex, the first monomer mixture and the first molecular weight modifier are collectively added and polymerization proceeds, according to the step (S20), the second monomer mixture, the first molecular weight modifier and the agent It may be carried out by continuously introducing a second molecular weight modifier different from the first molecular weight modifier.
- the step (S10) may be carried out in the presence of a conjugated diene-based polymer latex.
- the first monomer mixture introduced in the step (S10) is graft-polymerized to the conjugated diene-based polymer included in the conjugated diene-based polymer latex, so that the monomer unit formed from the first monomer mixture is inside the conjugated diene-based polymer
- a preliminary graft copolymer including a first graft layer formed by infiltration or formed externally may be prepared.
- the conjugated diene-based polymer latex may be prepared from the step (S1) of preparing the conjugated diene-based polymer.
- the step (S1) is a step of polymerizing a conjugated diene-based monomer to prepare a conjugated diene-based polymer, wherein the conjugated diene-based monomer is 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, piperylene , 3-butyl-1,3-octadiene, isoprene, and 2-phenyl-1,3-butadiene, and may be at least one selected from the group consisting of, and a specific example may be 1,3-butadiene.
- the step (S1) may be carried out by emulsion polymerization, and thus may be obtained in the form of a conjugated diene-based polymer latex containing a conjugated diene-based polymer.
- the step (S1) may be carried out by radical polymerization using a peroxide-based, redox, or azo-based initiator, and the redox initiator is, for example, t- It may be at least one selected from the group consisting of butyl hydroperoxide, diisopropylbenzene hydroperoxide, and cumene hydroperoxide, and in this case, there is an effect of providing a stable polymerization environment.
- ferrous sulfate, sodium ethylenediamine tetraacetate, and sodium formaldehyde sulfoxylate may be further included as the redox catalyst.
- the emulsifier used during the emulsion polymerization in step (S1) may be at least one selected from the group consisting of anionic emulsifiers, cationic emulsifiers, and nonionic emulsifiers, and specific examples include alkylaryl sulfonates, alkalis.
- alkylaryl sulfonates alkalis.
- the emulsifier may be added in an amount of 5.0 parts by weight or less, 3.0 parts by weight or less, or 0.5 parts by weight to 2.5 parts by weight based on 100 parts by weight of the total amount of the conjugated diene-based monomer added in step (S1).
- the emulsion polymerization of step (S1) may be carried out in an aqueous solvent, and the aqueous solvent may be ion-exchanged water.
- the conjugated diene-based polymer latex includes a conjugated diene-based polymer, and the conjugated diene-based polymer has a total input content of 100% by weight of the conjugated diene-based polymer, the aromatic vinyl monomer, and the vinylcyanic monomer. It may be added in an amount of 50 parts by weight or more and 80 parts by weight or less per part.
- the input content of the conjugated diene-based polymer means the solid content of the conjugated diene-based polymer in the conjugated diene-based polymer latex.
- the conjugated diene-based polymer is 50 parts by weight or more, 52 parts by weight or more, 54 parts by weight or more, 56 parts by weight based on 100 parts by weight of the total amount of the conjugated diene-based polymer, aromatic vinyl monomer, and vinylcyanic monomer.
- the first monomer mixture introduced in step (S10) may include an aromatic vinyl monomer and a vinyl cyan monomer.
- the first monomer mixture contains 15% by weight or more, 16% by weight or more, 17% by weight or more, 18% by weight or more, 19% by weight or more, 20% by weight or more, 21% by weight or more, 22% by weight or more.
- the graft copolymer During the polymerization of the graft copolymer within this range, it is rapidly increased in the middle to late stage of polymerization, so that it can be prevented from going out of the temperature range controlled during polymerization, and for general-purpose matrix resins such as styrene-acrylonitrile copolymer It is possible to prevent a decrease in impact strength of a heat-resistant matrix resin such as ⁇ -methylstyrene-acrylonitrile copolymer while sufficiently securing impact strength and fluidity.
- a heat-resistant matrix resin such as ⁇ -methylstyrene-acrylonitrile copolymer
- the first monomer mixture contains 60% by weight or more, 61% by weight or more of an aromatic vinylic monomer, depending on the content of the vinylcyanic monomer. 62% by weight or more, 63% by weight or more, 64% by weight or more, 65% by weight or more, 66% by weight or more, 67% by weight or more, 68% by weight or more, 69% by weight or more, or 70% by weight or more, In addition, 85 wt% or less, 84 wt% or less, 83 wt% or less, 82 wt% or less, 81 wt% or less, 80 wt% or less, 79 wt% or less, 78 wt% or less, 77 wt% or less, 76 wt% or less, or may be included in an amount of 75% by weight or less.
- the first monomer mixture may further include a conjugated diene polymer, an aromatic vinyl monomer, and a vinyl monomer copolymerizable with the vinyl cyan monomer, if necessary.
- the first monomer mixture is 5 parts by weight or more based on 100 parts by weight of the total input content of the conjugated diene-based polymer, aromatic vinyl monomer, and vinyl cyan-based monomer introduced during the preparation of the graft copolymer It may be added in 20 parts by weight or less.
- the first monomer mixture is 5 parts by weight or more, 6 parts by weight or more, 7 parts by weight or more, 8 parts by weight or more based on 100 parts by weight of the total input content of the conjugated diene-based polymer, the aromatic vinyl-based monomer, and the vinyl cyan-based monomer.
- It may be 9 parts by weight or more or 10 parts by weight or more, and may be 20 parts by weight or less, 19 parts by weight or less, 18 parts by weight or less, 17 parts by weight or less, 16 parts by weight or less, or 15 parts by weight or less, within this range. It is possible to improve impact resistance while preventing a decrease in the compatibility of the graft copolymer with the matrix resin.
- the second monomer mixture introduced in step (S20) may include an aromatic vinyl monomer and a vinyl cyan monomer.
- the aromatic vinyl-based monomer of the first monomer mixture and the aromatic vinyl-based monomer of the second monomer mixture may be the same or different from each other, and also, the vinyl cyan-based monomer of the first monomer mixture and the second monomer mixture
- the vinyl cyan-based monomers of may be the same as or different from each other.
- the second monomer mixture contains 1% by weight or more, 5% by weight or more, 10% by weight or more, 11% by weight or more, 12% by weight or more, 13% by weight or more, 14% by weight or more of vinyl cyan monomers.
- the second monomer mixture contains 73% by weight or more, 74% by weight or more, 75% by weight or more, 76% by weight or more, 77% by weight or more, 78% by weight or more, 79% by weight or more or 80% by weight or more, and also 99% by weight or less, 95% by weight or less, 90% by weight or less, 89% by weight or less, 88% by weight or less, 87 wt% or less, 86 wt% or less, 85 wt% or less, 84 wt% or less, 83 wt% or less, 82 wt% or less, 81 wt% or less, or 80 wt% or less.
- the second monomer mixture may further include a conjugated diene-based polymer, an aromatic vinyl-based monomer, and a vinyl-based monomer copolymerizable with the vinylcyan-based monomer, if necessary, in addition to the aromatic vinyl-based monomer and the vinylcyanic-based monomer.
- the second monomer mixture is 10 parts by weight or more based on 100 parts by weight of the total input content of the conjugated diene-based polymer, aromatic vinyl-based monomer, and vinylcyanic monomer introduced during the preparation of the graft copolymer It may be added in 45 parts by weight or less.
- the second monomer mixture is 10 parts by weight or more, 15 parts by weight or more, 20 parts by weight or more, or 25 parts by weight based on 100 parts by weight of the total input content of the conjugated diene-based polymer, the aromatic vinyl-based monomer, and the vinyl cyan-based monomer. or more, and may be 45 parts by weight or less, 40 parts by weight or less, 35 parts by weight or less, or 30 parts by weight or less.
- the aromatic vinyl monomer is styrene, ⁇ -methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 1-vinylnaphthalene, 4-cyclohexylstyrene, 4- It may be at least one selected from the group consisting of (p-methylphenyl)styrene and 1-vinyl-5-hexylnaphthalene, and may be styrene as a specific example.
- the vinyl cyan-based monomer may be at least one selected from the group consisting of acrylonitrile, methacrylonitrile, ethacrylonitrile, phenylacrylonitrile, and ⁇ -chloroacrylonitrile, , It may be acrylonitrile as a specific example.
- the steps (S10) and (S20) may be performed by introducing a first molecular weight modifier together with the first monomer mixture and the second monomer mixture.
- the first molecular weight modifier is added in both the steps (S10) and (S20), but in the step (S10), it is added together with the first monomer mixture, and in the step (S20), the 2 It can be continuously added together with the monomer mixture, and in this case, the absolute amount of the first molecular weight regulator added during the preparation of the graft copolymer can be reduced, and when the same amount is added based on the total amount of the first molecular weight regulator , It is possible to improve the fluidity of the graft copolymer and at the same time prevent a decrease in mechanical properties such as impact resistance by introducing the graft copolymer as described above.
- the first molecular weight modifier is t-dodecylmercaptan, n-dodecylmercaptan, octylmercaptan, carbon tetrachloride, methylene chloride, methylene bromide, tetraethyl thiuram disulfide, dipentamethylene tea It may be at least one selected from the group consisting of uram disulfide and diisopropylxantogen disulfide, and may be t-dodecylmercaptan as a specific example.
- the total input content of the first molecular weight regulator in the steps (S10) and (S20) is 100 parts by weight of the total input content of the conjugated diene polymer, the aromatic vinyl monomer, and the vinyl cyan monomer. It may be 0.20 parts by weight or more and 0.40 parts by weight or less with respect to. As a specific example, the total input amount of the first molecular weight regulator in the steps (S10) and (S20) is 0.20 parts by weight based on 100 parts by weight of the total input content of the conjugated diene polymer, the aromatic vinyl monomer, and the vinyl cyan monomer.
- the step (S20) may be performed by continuously introducing a second molecular weight regulator different from the first molecular weight regulator together with the second monomer mixture in addition to the first molecular weight regulator.
- the second molecular weight regulator may be introduced for the purpose of changing only the graft rate without changing the molecular weight.
- the second molecular weight modifier is ⁇ -methylstyrenedimer, n-dodecylmercaptan, octylmercaptan, carbon tetrachloride, methylene chloride, methylene bromide, tetraethyl thiuram disulfide, dipentamethylene thiuram disulfide and diiso It may be at least one selected from the group consisting of propyl xanthogen disulfide, and a specific example according to the purpose of introducing the second molecular weight regulator may be ⁇ -methylstyrene dimer.
- the input content of the second molecular weight regulator in step (S20) is 0.01 part by weight or more based on 100 parts by weight of the total input content of the conjugated diene-based polymer, the aromatic vinyl-based monomer, and the vinyl cyan-based monomer. It may be 0.40 parts by weight or less.
- the total input amount of the second molecular weight regulator in step (S20) is 0.01 part by weight or more, 0.02 part by weight based on 100 parts by weight of the total input content of the conjugated diene-based polymer, the aromatic vinyl-based monomer, and the vinyl cyan-based monomer.
- the graft polymerization of steps (S10) and (S20) may be performed by emulsion polymerization, and the emulsion polymerization may be performed in the presence of an emulsifier.
- the emulsifier may be at least one selected from the group consisting of anionic emulsifiers, cationic emulsifiers and nonionic emulsifiers, and specific examples include alkylaryl sulfonates, alkali methyl alkyl sulfates, soaps of fatty acids, alkali salts of oleic acid, alkali salts of rosin acid, It may be at least one selected from the group consisting of alkali salt of lauryl acid, sodium diethylhexyl phosphate, phosphonated polyoxyethylene alcohol, and phosphonated polyoxyethylene phenol.
- the graft polymerization of steps (S10) and (S20) may be carried out by radical polymerization using a peroxide-based, redox, or azo-based initiator
- the redox initiator may be, for example, at least one selected from the group consisting of t-butyl hydroperoxide, diisopropylbenzene hydroperoxide, and cumene hydroperoxide, and in this case, a stable polymerization environment is provided.
- ferrous sulfate, dextrose, and sodium pyrophosphate may be further included as the redox catalyst.
- the graft polymerization in the steps (S10) and (S20) may be carried out in an aqueous solvent, and the aqueous solvent may be ion-exchanged water. Accordingly, in the step (S20)
- the prepared graft copolymer can be obtained in the form of a latex in which graft copolymer particles are colloidally dispersed in an aqueous solvent.
- the present invention provides graft copolymers.
- the graft copolymer may be prepared according to the method for preparing the graft copolymer described above.
- the graft copolymer is a conjugated diene-based polymer; a first graft layer formed by infiltrating the inside of the conjugated diene-based polymer or formed on the outside; and a second graft layer formed to surround the first graft layer, wherein the first graft layer contains 60% by weight or more and 85% by weight or less of aromatic vinyl-based monomer units and 15% by weight or more of 40% by weight or more of vinyl cyan-based monomer units.
- the second graft layer may include 73 wt% or more and 99 wt% or less of aromatic vinyl-based monomer units and 1 wt% or more and 27 wt% or less of vinyl cyan-based monomer units.
- the conjugated diene-based polymer may be derived from the conjugated diene-based polymer included in the conjugated diene-based polymer latex introduced in step (S10) of the graft copolymer manufacturing method, and the The first graft layer may be derived from the first monomer mixture introduced in step (S10) of the method for preparing the graft copolymer, and the second graft layer may be derived from the step (S20) of the method for preparing the graft copolymer It may be derived from the input second monomer mixture.
- the graft copolymer may include a conjugated diene-based polymer according to the content of the conjugated diene-based polymer introduced in the graft copolymer manufacturing method, and the first graft layer and the second The graft layer also depends on the content of the first monomer mixture and the second monomer mixture introduced in the graft copolymer manufacturing method, the content of each monomer in the first monomer mixture, and the content of each monomer in the second monomer mixture.
- Aromatic vinyl-based A monomer unit and a vinyl cyan-based monomer unit may be included.
- the graft copolymer is subjected to graft polymerization in stages according to the steps (S10) and (S20) of the above-described method for preparing the graft copolymer, so that the above structural specificity can represent
- the graft copolymer may have a graft rate of 34.0% or more and 44.0% or less.
- the graft rate may be adjusted from the second molecular weight regulator in the method for preparing the graft copolymer, and as specific examples, may be 34.0% or more, 36.0% or more, 38.0% or more, 38.5% or more, or 38.6% or more, and also 44.0% or less, 43.0% or less, 42.5% or less, or 42.2% or less.
- the graft copolymer may have a weight average molecular weight of 80,000 g/mol or more and 95,000 g/mol or less.
- the weight average molecular weight may be adjusted from the first molecular weight regulator in the method for preparing the graft copolymer, and specifically, 80,000 g / mol or more, 80,400 g / mol or more, 81,000 g / mol or more, 81,500 g / mol or more 81,800 g/mol or more, and also 95,000 g/mol or less, 94,000 g/mol or less, 93,000 g/mol or less, 92,000 g/mol or less, 91,000 g/mol or less, 90,000 g/mol or less, 89,000 g/mol or less than or equal to 88,000 g/mol.
- the present invention provides a resin composition.
- the resin composition may include the graft copolymer and a matrix resin.
- the graft copolymer is prepared according to the method for preparing the graft copolymer, and can improve processability by improving fluidity while maintaining impact properties at the same or higher level regardless of the type of matrix resin, so that the resin composition is Regardless of the type of matrix resin, it has excellent impact resistance and processability.
- the resin composition may include 10 parts by weight or more and 40 parts by weight or less of the graft copolymer based on 100 parts by weight of the total content of the graft copolymer and the matrix resin.
- 10 parts by weight or more 15 parts by weight or more, 20 parts by weight or more, 21 parts by weight or more, 22 parts by weight or more, 23 parts by weight or more, 24 parts by weight or more, or 25 parts by weight or more.
- It may include 25 parts by weight or less, 35 parts by weight or less, 30 parts by weight or less, 29 parts by weight or less, 28 parts by weight or less, 27 parts by weight or less, 26 parts by weight or less, or 25 parts by weight or less.
- the content of the graft copolymer may be applied differently in the resin composition according to the type of matrix resin.
- the resin composition contains 60 parts by weight or more and 90 parts by weight or less of the matrix resin based on 100 parts by weight of the total content of the graft copolymer and the matrix resin, depending on the content of the graft copolymer. It may include, for example, 60 parts by weight or more, 65 parts by weight or more, 70 parts by weight or more, 71 parts by weight or more, 72 parts by weight or more, 73 parts by weight or more, 74 parts by weight or more, or 75 parts by weight or more.
- the content of the matrix resin may be applied differently in the resin composition according to the type of matrix resin.
- the matrix resin may include an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit.
- the aromatic vinyl-based monomer for forming the aromatic vinyl-based monomer unit is styrene, ⁇ -methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 1-vinylnaphthalene, 4-cyclohexylstyrene, It may be at least one selected from the group consisting of 4-(p-methylphenyl)styrene and 1-vinyl-5-hexylnaphthalene, and may be styrene or ⁇ -methylstyrene as a specific example.
- the vinyl cyan-based monomer for forming the vinyl cyan-based monomer unit is at least one selected from the group consisting of acrylonitrile, methacrylonitrile, ethacrylonitrile, phenylacrylonitrile and ⁇ -chloroacrylonitrile It may be, and a specific example may be acrylonitrile.
- the matrix resin when the resin composition includes a general-purpose matrix resin as a matrix resin, the matrix resin may include a styrene monomer unit and a vinyl cyan monomer unit. It may be an acrylonitrile copolymer.
- the resin composition when the resin composition includes a styrene monomer unit and a vinyl cyan monomer unit as a matrix resin, the resin composition has a flow index measured under the condition of 220 ° C. and 10 kg according to the ASTM D1238 method 17.0 g / 10 min or more, 17.5 g / 10 min or more, 18.0 g / 10 min or more, 18.5 g / 10 min or more, 19.0 g / 10 min or more, 19.5 g / 10 min or more, or 20.0 g / 10 min or more 25.0 g/10 min or less, 24.5 g/10 min or less, 24.0 g/10 min or less, 23.5 g/10 min or less, 23.0 g/10 min or less, 22.5 g/10 min or less, 22.0 g/ It may be 10 min or less, 21.5 g / 10 min or less, 21.0 g / 10 min or less, 20.5 g / 10 min or less, or 20.0 g
- the resin composition when the resin composition includes a styrene monomer unit and a vinyl cyan monomer unit as a matrix resin, the resin composition is prepared according to the ASTM D256 method using a 1/4 inch thick specimen.
- the impact strength measured at room temperature (23 °C) may be 33.5 kgf cm/cm or more, 34.0 kgf cm/cm or more, 34.5 kgf cm/cm or more, or 35.0 kgf cm/cm or more, and also 50.0 kgf cm/cm or less, 45.0 kgf cm/cm or less, 40.0 kgf cm/cm or less, 39.0 kgf cm/cm or less, 38.0 kgf cm/cm or less, 37.0 kgf cm/cm or less, or 36.0 kgf cm / cm or less.
- the matrix when the resin composition includes a heat-resistant matrix resin as the matrix resin, the matrix may include ⁇ -methylstyrene monomer units and vinylcyanic monomer units, and in specific examples, ⁇ - It may be a methylstyrene-acrylonitrile copolymer.
- the resin composition when the resin composition includes an ⁇ -methylstyrene monomer unit and a vinylcyanic monomer unit as a matrix resin, the resin composition is measured under the condition of 220 ° C. and 10 kg according to the ASTM D1238 method 5.0 g/10 min or more, 5.1 g/10 min or more, 5.2 g/10 min or more, 5.3 g/10 min or more, 5.4 g/10 min or more, 5.5 g/10 min or more, 5.6 g/10 min or more, 5.7 g/10 min or more, 5.8 g/10 min or more, 5.9 g/10 min or more, 6.0 g/10 min or more, 6.1 g/10 min or more, 6.2 g/10 min or more, 6.3 g/10 min or 6.4 g/10 min or more, and may be 8.0 g/10 min or less, 7.5 g/10 min or less, 7.0 g/10 min or less, 6.5 g/10 min or less, 6.4 g/10 min or less, 6.3 g/10/10
- the resin composition when the resin composition includes an ⁇ -methylstyrene monomer unit and a vinyl cyan-based monomer unit as a matrix resin, the resin composition is a 1/4 inch thick specimen according to the ASTM D256 method. 13.0 kgf cm/cm or more, 13.5 kgf cm/cm or more, 14.0 kgf cm/cm or more, 14.5 kgf cm/cm or more, or 15.0 kgf cm / cm or more, and also 20.0 kgf cm / cm or less, 19.0 kgf cm / cm or less, 18.0 kgf cm / cm or less, 17.0 kgf cm / cm or less, 16.0 kgf cm / cm or less, 15.0 It may be kgf ⁇ cm/cm or less or 14.0 kgf ⁇ cm/cm or less.
- the resin composition may include additives known in the field of the present invention, such as antioxidants, heat stabilizers, processing aids, colorants, and lubricants, if necessary, in conventional amounts.
- additives known in the field of the present invention such as antioxidants, heat stabilizers, processing aids, colorants, and lubricants, if necessary, in conventional amounts.
- a first monomer mixture 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile), 0.05 part by weight of dextrose, 0.03 part by weight of tetrasodium pyrophosphate, and a sulfuric agent 0.001 part by weight of ferrous iron, 0.12 part by weight of t-butyl hydroperoxide, and 0.20 part by weight of t-dodecylmercaptan as a first molecular weight modifier were added at once, and the mixture was stirred at 50° C. for 30 minutes.
- MgSO 4 magnesium sulfate
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 9.6 parts by weight of styrene and 2.4 parts by weight of acrylonitrile (20% by weight of acrylonitrile) 21.2 parts by weight of styrene and 6.8 parts by weight of acrylonitrile (24.3% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture.
- Graft copolymer powder was prepared in the same manner as in Example 1, except for the above.
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 9.0 parts by weight of styrene and 3.0 parts by weight of acrylonitrile (25% by weight of acrylonitrile) 21.8 parts by weight of styrene and 6.2 parts by weight of acrylonitrile (22.1% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture.
- Graft copolymer powder was prepared in the same manner as in Example 1, except for the above.
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used. and 22.4 parts by weight of styrene and 5.6 parts by weight of acrylonitrile (20.0% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture. Graft copolymer powder was prepared in the same manner as in Example 1, except for the above.
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 7.2 parts by weight of styrene and 4.8 parts by weight of acrylonitrile (40% by weight of acrylonitrile) and 23.6 parts by weight of styrene and 4.4 parts by weight of acrylonitrile (15.7% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture.
- Graft copolymer powder was prepared in the same manner as in Example 1, except for the above.
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used.
- acrylonitrile Graft copolymer powder was prepared in the same manner as in Example 1 except that 22.4 parts by weight of styrene and 5.6 parts by weight of acrylonitrile (20.0% by weight of acrylonitrile) were added instead of 26.4% by weight of ronitrile).
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used.
- acrylonitrile Graft copolymer powder was prepared in the same manner as in Example 1 except that 22.4 parts by weight of styrene and 5.6 parts by weight of acrylonitrile (20.0% by weight of acrylonitrile) were added instead of 26.4% by weight of ronitrile).
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used. and 22.4 parts by weight of styrene and 5.6 parts by weight of acrylonitrile (20.0% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture.
- the graft copolymer powder was prepared in the same manner as in Example 1 except that 0.05 parts by weight of ⁇ -methylstyrene dimer, the second molecular weight regulator, was added instead of 0.10 parts by weight. .
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used. and 22.4 parts by weight of styrene and 5.6 parts by weight of acrylonitrile (20.0% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture.
- the graft copolymer powder was prepared in the same manner as in Example 1 except that 0.15 parts by weight of ⁇ -methylstyrene dimer, the second molecular weight regulator, was added instead of 0.10 parts by weight. .
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used. and 22.4 parts by weight of styrene and 5.6 parts by weight of acrylonitrile (20.0% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture.
- the graft copolymer powder was prepared in the same manner as in Example 1 except that 0.20 parts by weight of ⁇ -methylstyrene dimer, the second molecular weight regulator, was added instead of 0.10 parts by weight. .
- Example 1 the polybutadiene latex was added at 65 parts by weight instead of 60 parts by weight based on the solid content, and 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) were used as the first monomer mixture instead of 7.35 parts by weight of styrene.
- a graft copolymer powder was prepared in the same manner as in Example 1, except that 0.05 parts by weight of t-dodecylmercaptan, the first molecular weight regulator, was added instead of 0.10 parts by weight.
- Example 1 the polybutadiene latex was added at 70 parts by weight instead of 60 parts by weight based on the solid content, and 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (acrylonitrile 15% by weight) as the first monomer mixture instead of 6.3 parts by weight of styrene.
- a graft copolymer powder was prepared in the same manner as in Example 1, except that 0.05 parts by weight of t-dodecylmercaptan, the first molecular weight regulator, was added instead of 0.10 parts by weight.
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used. and 22.4 parts by weight of styrene and 5.6 parts by weight of acrylonitrile (20.0% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture. And, when the second monomer mixture was added, the graft copolymer powder was prepared in the same manner as in Example 1, except that ⁇ -methylstyrene dimer, the second molecular weight regulator, was not added.
- Example 1 12.0 parts by weight of styrene was added instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, and acrylonitrile was not added (acrylonitrile 0% by weight), 18.8 parts by weight of styrene and 9.2 parts by weight of acrylonitrile (32.9% by weight of acrylonitrile) instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture.
- Graft copolymer powder was prepared in the same manner as in Example 1 except that the mixture was added.
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 10.8 parts by weight of styrene and 1.2 parts by weight of acrylonitrile (10% by weight of acrylonitrile) and 20.0 parts by weight of styrene and 8.0 parts by weight of acrylonitrile (28.6% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture.
- Graft copolymer powder was prepared in the same manner as in Example 1, except for the above.
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used. and 19.6 parts by weight of styrene and 8.4 parts by weight of acrylonitrile (30.0% by weight of acrylonitrile) were added instead of 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) as the second monomer mixture. Graft copolymer powder was prepared in the same manner as in Example 1, except for the above.
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used. is added, and when the first monomer mixture is added, t-dodecylmercaptan, which is the first molecular weight regulator, is not added, and 20.6 parts by weight of styrene and 7.4 parts by weight of acrylonitrile (26.4% by weight of acrylonitrile) are added as the second monomer mixture.
- t-dodecylmercaptan which is the first molecular weight regulator
- Graft copolymer powder was prepared in the same manner as in Example 1, except for the above.
- Example 1 instead of 10.2 parts by weight of styrene and 1.8 parts by weight of acrylonitrile (15% by weight of acrylonitrile) as the first monomer mixture, 8.4 parts by weight of styrene and 3.6 parts by weight of acrylonitrile (30% by weight of acrylonitrile) were used.
- the graft rate and weight average molecular weight were measured by the following methods, and the composition of each monomer, the weight ratio of vinyl cyan-based monomers in the monomer mixture, It is shown in Tables 1 to 3 below along with the input content of the first molecular weight regulator and the second molecular weight regulator.
- Graft rate (%) 1 g of each graft copolymer powder prepared in Examples 1 to 12 and Comparative Examples 1 to 6 was added to 50 ml of acetone, stirred for 24 hours, and then centrifuged using a centrifuge. Sol-gel separation. Then, the precipitate was dried at 80 ° C. to obtain a dry product, the weight of the dried product was measured, and the graft rate was calculated according to Equation 1 below.
- Graft rate (%) [ ⁇ (weight of dry matter) - (weight of conjugated diene-based polymer added during polymerization) ⁇ /(weight of conjugated diene-based polymer added during polymerization)] X 100
- Weight average molecular weight (Mw, g / mol) After dissolving the dry matter for Examples 1 to 12 and Comparative Examples 1 to 6 obtained when measuring the graft rate in tetrahydrofuran (THF), gel permeation chromatography (GPC, Gel Permeation Chromatography, PL GPC220, Agilent Technologies) was used to measure the weight average molecular weight under the following conditions.
- Comparative Example 6 in which the molecular weight modifier was not added when the first monomer mixture was added and the first molecular weight modifier was not added when the second monomer mixture was added, and the second molecular weight modifier instead of the first molecular weight modifier when the first monomer mixture was added, the graft rate was higher than that of Examples 1 to 12, and in particular, Comparative Example 6 had a high weight average molecular weight.
- the first resin composition and the second resin composition were prepared in the following manner, respectively, and the impact strength and flow of each resin composition The index was measured and shown in Tables 4 to 6 below.
- the first resin composition and the second resin composition comprising the graft copolymers of Examples 1 to 12 prepared according to the present invention were each different in the type of matrix resin, but the second When adding the monomer mixture, compared to the first resin composition and the second resin composition including the graft copolymer of Comparative Example 1 in which the second molecular weight modifier was not added, the fluidity was maintained at the same level or improved , it was confirmed that all of the impact strengths were improved.
- Comparative Example 2 including no vinyl cyan-based monomer in the first monomer mixture and an excessive amount of vinyl cyan-based monomer in the second monomer mixture, and a small amount of the vinyl cyan-based monomer mixture in the first monomer mixture, It was confirmed that both the first resin composition and the second resin composition including the graft copolymer of Comparative Example 3 containing an excessive amount of vinyl cyan-based monomers in the second monomer mixture rapidly decreased in impact strength. This is due to the fact that the graft rate and weight average molecular weight of the graft copolymer are not sufficiently secured.
- Comparative Example 4 including an excessive amount of vinyl cyan-based monomers in the second monomer mixture, and when the first monomer mixture was added, the molecular weight modifier was not added, and when the second monomer mixture was added, the first molecular weight modifier was not added.
- Example 5 and Comparative Example 6 in which the second molecular weight modifier was added instead of the first molecular weight modifier when the first monomer mixture was added, and the first molecular weight modifier was not added when the second monomer mixture was added, flow indexes were all rapidly increased. It was confirmed that the decrease was observed, and in particular, in Comparative Examples 5 and 6, it was confirmed that the impact strength of the first resin composition also decreased.
- the graft copolymer prepared by the graft copolymer manufacturing method according to the present invention has the same impact properties as the resin composition including the graft copolymer and the matrix resin, regardless of the type of matrix resin. While maintaining the above level, it was confirmed that the workability is improved according to the improvement in fluidity.
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Abstract
Description
| 구분 | 실시예 | |||||||
| 1 | 2 | 3 | 4 | 5 | 6 | |||
| 공액디엔계 중합체 | PBL1) | (중량부) | 60 | 60 | 60 | 60 | 60 | 60 |
| 제1 단량체 혼합물 | SM2) | (중량부) | 10.2 | 9.6 | 9.0 | 8.4 | 7.2 | 8.4 |
| AN3) | (중량부) | 1.8 | 2.4 | 3.0 | 3.6 | 4.8 | 3.6 | |
| TDDM4) | (중량부) | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.15 | |
| AN 중량비 | (중량%) | 15.0 | 20.0 | 25.0 | 30.0 | 40.0 | 30.0 | |
| 제2 단량체 혼합물 | SM2) | (중량부) | 20.6 | 21.2 | 21.8 | 22.4 | 23.6 | 22.4 |
| AN3) | (중량부) | 7.4 | 6.8 | 6.2 | 5.6 | 4.4 | 5.6 | |
| TDDM4) | (중량부) | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | |
| AMSD5) | (중량부) | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 | |
| AN 중량비 | (중량%) | 26.4 | 24.3 | 22.1 | 20.0 | 15.7 | 20.0 | |
| 그라프트 공중합체 | 그라프트율 | (%) | 34.2 | 38.1 | 38.6 | 39.5 | 40.3 | 41.4 |
| Mw | (g/mol) | 81,000 | 83,000 | 84,000 | 85,400 | 88,000 | 84,800 | |
| 1) PBL: 폴리부타디엔 라텍스 2) SM: 스티렌 3) AN: 아크릴로니트릴 4) TDDM: t-도데실머캅탄 5) AMSD: α-메틸스티렌다이머 |
||||||||
| 구분 | 실시예 | |||||||
| 7 | 8 | 9 | 10 | 11 | 12 | |||
| 공액디엔계 중합체 | PBL1) | (중량부) | 60 | 60 | 60 | 60 | 65 | 70 |
| 제1 단량체 혼합물 | SM2) | (중량부) | 8.4 | 8.4 | 8.4 | 8.4 | 7.35 | 6.3 |
| AN3) | (중량부) | 3.6 | 3.6 | 3.6 | 3.6 | 3.15 | 2.7 | |
| TDDM4) | (중량부) | 0.10 | 0.20 | 0.20 | 0.20 | 0.16 | 0.10 | |
| AN 중량비 | (중량%) | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | |
| 제2 단량체 혼합물 | SM2) | (중량부) | 22.4 | 22.4 | 22.4 | 22.4 | 19.6 | 16.8 |
| AN3) | (중량부) | 5.6 | 5.6 | 5.6 | 5.6 | 4.9 | 4.2 | |
| TDDM4) | (중량부) | 0.10 | 0.10 | 0.10 | 0.10 | 0.05 | 0.05 | |
| AMSD5) | (중량부) | 0.10 | 0.05 | 0.15 | 0.20 | 0.10 | 0.10 | |
| AN 중량비 | (중량%) | 20.0 | 20.0 | 20.0 | 20.0 | 20.0 | 20.0 | |
| 그라프트 공중합체 | 그라프트율 | (%) | 42.2 | 39.7 | 38.3 | 37.5 | 37.8 | 34.6 |
| Mw | (g/mol) | 86,000 | 83,500 | 81,800 | 80,400 | 84,300 | 80,200 | |
| 1) PBL: 폴리부타디엔 라텍스 2) SM: 스티렌 3) AN: 아크릴로니트릴 4) TDDM: t-도데실머캅탄 5) AMSD: α-메틸스티렌다이머 |
||||||||
| 구분 | 비교예 | |||||||
| 1 | 2 | 3 | 4 | 5 | 6 | |||
| 공액디엔계 중합체 | PBL1) | (중량부) | 60 | 60 | 60 | 60 | 60 | 60 |
| 제1 단량체 혼합물 | SM2) | (중량부) | 8.4 | 12.0 | 10.8 | 8.4 | 8.4 | 8.4 |
| AN3) | (중량부) | 3.6 | - | 1.2 | 3.6 | 3.6 | 3.6 | |
| TDDM4) | (중량부) | 0.20 | 0.20 | 0.20 | 0.20 | 0 | 0 | |
| AMSD5) | (중량부) | 0 | 0 | 0 | 0 | 0 | 0.1 | |
| AN 중량비 | (중량%) | 30.0 | - | 10.0 | 30.0 | 30.0 | 30.0 | |
| 제2 단량체 혼합물 | SM2) | (중량부) | 22.4 | 18.8 | 20.0 | 19.6 | 22.4 | 22.4 |
| AN3) | (중량부) | 5.6 | 9.2 | 8.0 | 8.4 | 5.6 | 5.6 | |
| TDDM4) | (중량부) | 0.10 | 0.10 | 0.10 | 0.10 | 0 | 0 | |
| AMSD5) | (중량부) | - | 0.10 | 0.10 | 0.10 | 0.40 | 0.20 | |
| AN 중량비 | (중량%) | 20.0 | 32.9 | 28.6 | 30.0 | 20.0 | 20 | |
| 그라프트 공중합체 | 그라프트율 | (%) | 39.7 | 32.2 | 33.5 | 44.2 | 52.6 | 53.2 |
| Mw | (g/mol) | 87,200 | 78,000 | 79,900 | 87,400 | 88,300 | 97,000 | |
| 1) PBL: 폴리부타디엔 라텍스 2) SM: 스티렌 3) AN: 아크릴로니트릴 4) TDDM: t-도데실머캅탄 5) AMSD: α-메틸스티렌다이머 |
||||||||
| 구분 | 실시예 | |||||||
| 1 | 2 | 3 | 4 | 5 | 6 | |||
| 제1 수지 조성물 | 충격강도 | (kgf·cm/cm) | 33.9 | 34.1 | 34.2 | 34.7 | 34.9 | 35.0 |
| 유동지수 | (g/10 min) | 20.3 | 20.0 | 19.9 | 19.8 | 19.4 | 18.8 | |
| 제2 수지 조성물 | 충격강도 | (kgf·cm/cm) | 13.5 | 13.7 | 13.9 | 14.9 | 14.2 | 15.1 |
| 유동지수 | (g/10 min) | 6.4 | 6.3 | 6.2 | 6.2 | 5.9 | 5.6 | |
| 구분 | 실시예 | |||||||
| 7 | 8 | 9 | 10 | 11 | 12 | |||
| 제1 수지 조성물 | 충격강도 | (kgf·cm/cm) | 35.4 | 34.3 | 35.2 | 33.8 | 34.0 | 33.8 |
| 유동지수 | (g/10 min) | 17.9 | 19.4 | 20.1 | 20.6 | 21.0 | 21.6 | |
| 제2 수지 조성물 | 충격강도 | (kgf·cm/cm) | 15.4 | 14.4 | 14.6 | 13.8 | 14.2 | 13.1 |
| 유동지수 | (g/10 min) | 5.1 | 6.0 | 6.4 | 6.6 | 6.3 | 6.5 | |
| 구분 | 비교예 | |||||||
| 1 | 2 | 3 | 4 | 5 | 6 | |||
| 제1 수지 조성물 | 충격강도 | (kgf·cm/cm) | 33.4 | 33.0 | 33.4 | 35.6 | 33.1 | 32.8 |
| 유동지수 | (g/10 min) | 19.0 | 20.7 | 20.5 | 17.5 | 17.4 | 16.8 | |
| 제2 수지 조성물 | 충격강도 | (kgf·cm/cm) | 13.9 | 11.9 | 12.4 | 15.6 | 16.2 | 16.5 |
| 유동지수 | (g/10 min) | 5.8 | 6.6 | 6.5 | 4.9 | 5.1 | 4.8 | |
Claims (12)
- 공액디엔계 중합체 라텍스의 존재 하에, 제1 단량체 혼합물 및 제1 분자량 조절제를 일괄 투입하고 중합하여 예비 그라프트 공중합체를 포함하는 예비 그라프트 공중합체 라텍스를 제조하는 단계(S10); 및상기 (S10) 단계에서 제조된 예비 그라프트 공중합체 라텍스의 존재 하에, 제2 단량체 혼합물, 제1 분자량 조절제 및 제1 분자량 조절제와는 상이한 제2 분자량 조절제를 연속 투입하고 중합하여 그라프트 공중합체를 포함하는 그라프트 공중합체 라텍스를 제조하는 단계(S20)를 포함하고,상기 제1 단량체 혼합물은 방향족 비닐계 단량체를 60 중량% 이상 85 중량% 이하, 및 비닐시안계 단량체를 15 중량% 이상 40 중량% 이하로 포함하고,상기 제2 단량체 혼합물은 방향족 비닐계 단량체를 73 중량% 이상 99 중량% 이하, 및 비닐시안계 단량체를 1 중량% 이상 27 중량% 이하로 포함하는 것인 그라프트 공중합체 제조방법.
- 제1항에 있어서,상기 공액디엔계 중합체 라텍스는 공액디엔계 중합체를 포함하고,상기 공액디엔계 중합체는 공액디엔계 중합체, 방향족 비닐계 단량체 및 비닐시안계 단량체의 전체 투입 함량 100 중량부에 대하여 50 중량부 이상 80 중량부 이하로 투입되는 것인 그라프트 공중합체 제조방법.
- 제1항에 있어서,상기 제1 단량체 혼합물은 비닐시안계 단량체를 25 중량% 이상 40 중량% 이하로 포함하는 것인 그라프트 공중합체 제조방법.
- 제1항에 있어서,상기 제2 단량체 혼합물은 비닐시안계 단량체를 15 중량% 이상 25 중량% 이하로 포함하는 것인 그라프트 공중합체 제조방법.
- 제1항에 있어서,상기 제1 분자량 조절제는 t-도데실머캅탄, n-도데실머캅탄, 옥틸머캅탄, 사염화탄소, 염화메틸렌, 브롬화메틸렌, 테트라에틸 티우람 다이설파이드, 디펜타메틸렌 티우람 다이설파이드 및 디이소프로필크산토겐 다이설파이드로 이루어진 군으로부터 선택된 1종 이상인 것인 그라프트 공중합체 제조방법.
- 제1항에 있어서,상기 (S10) 단계 및 (S20) 단계의 제1 분자량 조절제의 전체 투입 함량은 공액디엔계 중합체, 방향족 비닐계 단량체 및 비닐시안계 단량체의 전체 투입 함량 100 중량부에 대하여 0.20 중량부 이상 0.40 중량부 이하인 그라프트 공중합체 제조방법.
- 제1항에 있어서,상기 제2 분자량 조절제는 α-메틸스티렌다이머, n-도데실머캅탄, 옥틸머캅탄, 사염화탄소, 염화메틸렌, 브롬화메틸렌, 테트라에틸 티우람 다이설파이드, 디펜타메틸렌 티우람 다이설파이드 및 디이소프로필크산토겐 다이설파이드로 이루어진 군으로부터 선택된 1종 이상인 그라프트 공중합체 제조방법.
- 제1항에 있어서,상기 (S20) 단계의 제2 분자량 조절제의 투입 함량은 공액디엔계 중합체, 방향족 비닐계 단량체 및 비닐시안계 단량체의 전체 투입 함량 100 중량부에 대하여, 0.01 중량부 이상 0.40 중량부 이하인 그라프트 공중합체 제조방법.
- 공액디엔계 중합체; 상기 공액디엔계 중합체의 내부에 침투되어 형성되거나, 외부에 형성된 제1 그라프트층; 및 상기 제1 그라프트층을 감싸며 형성된 제2 그라프트층을 포함하고,상기 제1 그라프트층은 방향족 비닐계 단량체 단위를 60 중량% 이상 85 중량% 이하, 및 비닐시안계 단량체 단위를 15 중량% 이상 40 중량% 이하로 포함하며,상기 제2 그라프트층은 방향족 비닐계 단량체 단위를 73 중량% 이상 99 중량% 이하, 및 비닐시안계 단량체 단위를 1 중량% 이상 27 중량% 이하로 포함하는 것인 그라프트 공중합체.
- 제9항에 따른 그라프트 공중합체 및 매트릭스 수지를 포함하는 수지 조성물.
- 제10항에 있어서,상기 매트릭스 수지는 방향족 비닐계 단량체 단위 및 비닐시안계 단량체 단위를 포함하는 것인 수지 조성물.
- 제10항에 있어서,상기 매트릭스 수지는 α-메틸스티렌 단량체 단위 및 비닐시안계 단량체 단위를 포함하는 것인 수지 조성물.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/292,806 US20250002615A1 (en) | 2021-08-06 | 2022-08-05 | Method for preparing graft copolymer, graft copolymer and resin composition comprising same |
| CN202280049457.4A CN117642440A (zh) | 2021-08-06 | 2022-08-05 | 制备接枝共聚物的方法、接枝共聚物和包含其的树脂组合物 |
| EP22853529.0A EP4357380A4 (en) | 2021-08-06 | 2022-08-05 | METHOD FOR PRODUCING GRAFT COPOLYMER, GRAFT COPOLYMER AND RESIN COMPOSITION COMPRISING SAME |
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| KR20210104040 | 2021-08-06 | ||
| KR10-2021-0104040 | 2021-08-06 | ||
| KR10-2022-0097471 | 2022-08-04 | ||
| KR1020220097471A KR102939133B1 (ko) | 2021-08-06 | 2022-08-04 | 그라프트 공중합체 제조방법, 그라프트 공중합체 및 이를 포함하는 수지 조성물 |
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| US (1) | US20250002615A1 (ko) |
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| WO (1) | WO2023014154A1 (ko) |
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| KR100574324B1 (ko) * | 1999-02-04 | 2006-04-26 | 제일모직주식회사 | 내충격성 및 자연색상이 우수한 열가소성 수지의 제조방법 |
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| KR20030012155A (ko) * | 2001-07-30 | 2003-02-12 | 주식회사 엘지화학 | 압출쉬트용 아크릴로니트릴-부타디엔-스티렌(abs)열가소성 투명수지의 제조방법 |
| CN107118525A (zh) * | 2017-06-26 | 2017-09-01 | 宁波市特尔佳塑料科技有限公司 | 一种阻燃的abs增强改性pbt组合物 |
-
2022
- 2022-08-05 US US18/292,806 patent/US20250002615A1/en active Pending
- 2022-08-05 EP EP22853529.0A patent/EP4357380A4/en active Pending
- 2022-08-05 WO PCT/KR2022/011635 patent/WO2023014154A1/ko not_active Ceased
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| JPH06192346A (ja) | 1992-12-25 | 1994-07-12 | Nippon Steel Chem Co Ltd | Abs樹脂の製造法 |
| KR100574324B1 (ko) * | 1999-02-04 | 2006-04-26 | 제일모직주식회사 | 내충격성 및 자연색상이 우수한 열가소성 수지의 제조방법 |
| KR20050068557A (ko) * | 2003-12-30 | 2005-07-05 | 제일모직주식회사 | 백색도와 표면 광택이 우수한 열가소성 공중합체 수지의제조 방법 |
| KR20070043478A (ko) * | 2005-10-21 | 2007-04-25 | 주식회사 엘지화학 | 안정성이 우수한 abs계 그라프트 공중합체의 제조방법 |
| KR20080074163A (ko) * | 2005-12-09 | 2008-08-12 | 바이엘 머티리얼사이언스 아게 | 폴리카르보네이트 성형 조성물 |
| KR20150037645A (ko) * | 2013-09-30 | 2015-04-08 | 주식회사 엘지화학 | Abs 그라프트 공중합체의 제조방법 |
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| Title |
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| See also references of EP4357380A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4357380A1 (en) | 2024-04-24 |
| EP4357380A4 (en) | 2024-10-23 |
| US20250002615A1 (en) | 2025-01-02 |
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