WO2022097962A1 - 중합체의 제조방법 - Google Patents
중합체의 제조방법 Download PDFInfo
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- WO2022097962A1 WO2022097962A1 PCT/KR2021/014511 KR2021014511W WO2022097962A1 WO 2022097962 A1 WO2022097962 A1 WO 2022097962A1 KR 2021014511 W KR2021014511 W KR 2021014511W WO 2022097962 A1 WO2022097962 A1 WO 2022097962A1
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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
- C08F2/18—Suspension polymerisation
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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
- C08F212/00—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
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
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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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/42—Nitriles
- C08F220/44—Acrylonitrile
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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
- C08F222/00—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 a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/36—Amides or imides
- C08F222/40—Imides, e.g. cyclic imides
- C08F222/402—Alkyl substituted imides
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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
- C08F212/00—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
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
- C08F212/10—Styrene with nitriles
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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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/40—Esters of unsaturated alcohols, e.g. allyl (meth)acrylate
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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
- C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
- C08F2800/20—Copolymer characterised by the proportions of the comonomers expressed as weight or mass percentages
Definitions
- the present invention relates to a method for producing a polymer, and more particularly, to a method for producing a polymer capable of producing a polymer having a uniform composition throughout polymerization and excellent heat resistance.
- an alkyl styrene-based monomer or a maleimide-based monomer may be introduced.
- a polymer having a non-uniform composition was prepared due to the reactivity ratio of the maleimide-based monomer, the vinyl cyanide-based monomer, and the vinyl aromatic monomer.
- Patent Document 1 KR1995-0006130B1
- An object of the present invention is to provide a method for producing a polymer capable of producing a polymer having a uniform composition and excellent heat resistance throughout polymerization.
- the present invention batches a reaction solution containing a monomer mixture containing a maleimide-based monomer, a vinyl aromatic monomer, and a vinyl cyanide-based monomer and an aqueous solvent into a reactor and starts polymerization to do; It provides a method for preparing a polymer satisfying Equation 1 below, comprising the step of polymerizing while continuously adding a maleimide-based monomer and an aqueous solvent to the reactor, respectively, wherein the reaction solution satisfies Equation 1:
- the present invention provides a method for producing a polymer in (1), wherein the value of Formula 1 is 45 to 52.
- the present invention provides a method for producing a polymer according to (1) or (2), wherein the starting time of continuous input of the maleimide-based monomer and the aqueous solvent is a time when the polymerization conversion rate is 0 to 10%, respectively do.
- the present invention provides a method for producing a polymer according to any one of (1) to (3), wherein the time at which the continuous input of the maleimide-based monomer ends is a time when the polymerization conversion rate is 50 to 80%. .
- the present invention provides a method for producing a polymer according to any one of (1) to (4), wherein the continuous input of the aqueous solvent is terminated at a polymerization conversion of 60 to 80%.
- the present invention according to any one of (1) to (5), wherein the weight ratio of the maleimide-based monomer added in the polymerization initiating step to the maleimide-based monomer added in the polymerization step is 7.5: It provides a method for preparing a polymer that is 92.5 to 30:70.
- the present invention according to any one of (1) to (6), wherein the weight ratio of the aqueous solvent added in the polymerization initiating step to the aqueous solvent added in the polymerization step is 30:70 to 70: It provides a method for producing a polymer that is 30.
- the present invention according to any one of (1) to (8), wherein the monomer mixture comprises 8 to 20 wt% of the maleimide-based monomer; 60 to 75% by weight of the vinyl aromatic monomer; and 10 to 25% by weight of the vinyl cyanide-based monomer.
- the polymerization is suspension polymerization. It provides a method for producing a polymer that is
- the method for preparing the polymer of the present invention it is possible to prepare a polymer having a uniform composition throughout the polymerization.
- polymerization conversion' used in the present invention refers to the degree to which monomers are polymerized to form a polymer, and can be calculated by the following formula.
- Polymerization conversion (%) [(total weight of monomers added until polymerization is complete)-(total weight of unreacted monomers at the time of measuring polymerization conversion)]/(total of monomers added until polymerization is complete weight) ⁇ 100
- maleimide-based monomer' refers to maleimide, N-methyl maleimide, N-ethyl maleimide, N-propyl maleimide, N-isopropyl maleimide, N-butyl maleimide, and N-iso Butyl maleimide, N-t-butyl maleimide, N-lauryl maleimide, N-cyclohexyl maleimide, N-phenyl maleimide, N-(4-chlorophenyl) maleimide, 2-methyl-N-phenyl maleimide , N- (4-bromophenyl) maleimide, N- (4-nitrophenyl) maleimide, N- (4-hydroxyphenyl) maleimide, N- (4-methoxyphenyl) maleimide, N- (4-carboxyphenyl) may be at least one member selected from the group consisting of maleimide and N-benzyl maleimide, of which N-phenyl maleimide
- the term 'vinyl cyanide-based monomer' used in the present invention may mean at least one selected from the group consisting of acrylonitrile, methacrylonitrile, 2-ethyl-acrylonitrile, and 2-chloroacrylonitrile. there is.
- the vinyl cyanide-based monomer is preferably acrylonitrile.
- the unit derived from the vinyl cyanide-based monomer may be a vinyl cyanide-based monomer unit.
- the term 'vinyl aromatic monomer' used in the present invention includes styrene, ⁇ -methyl styrene, p-methyl styrene, 2,4-dimethyl styrene, 4-fluorostyrene, 4-chlorostyrene, 2-chlorostyrene, 4- It may mean at least one selected from the group consisting of bromostyrene and 2-bromostyrene.
- the vinyl aromatic monomer is preferably styrene.
- the unit derived from the vinyl aromatic monomer may be a vinyl aromatic monomer unit.
- 'aqueous solvent' used in the present invention may be ion-exchanged water or deionized water.
- the term 'suspending agent' used in the present invention includes water-soluble polyvinyl alcohol, partially saponified polyvinyl alcohol, polyacrylic acid, a polymer of vinyl acetate and maleic anhydride, hydroxypropyl methyl cellulose, gelatin, calcium phosphate, tricalcium phosphate, It may be one or more selected from the group consisting of hydroxyapatite, sorbitan monolaurate, sorbitan trioleate, polyoxyethylene, sodium lauryl sulfate, sodium dodecylbenzenesulfonate and sodium dioctylsulfosuccinate, of which Tricalcium phosphate is preferred.
- 'initiator' used in the present invention includes 2,5-dimethyl-2,5-di(t-butylperoxy)hexane, di(t-butylperoxy-isopropyl)benzene, t-butyl cumyl peroxide, Di-(t-amyl)-peroxide, dicumyl peroxide, butyl 4,4-di(t-butylperoxy)valerate, t-butylperoxybenzoate, 2,2-di(t-butylperoxy) Oxy)butane, t-amyl peroxy-benzoate, t-butylperoxy-acetate, t-butylperoxy-(2-ethylhexyl)carbonate, t-butylperoxyisopropyl carbonate, t-butylperoxy- 3,5,5-trimethyl-hexanoate, 1,1-di(t-butylperoxy)cyclohexane
- a reaction solution containing a monomer mixture including a maleimide-based monomer, a vinyl aromatic monomer, and a vinyl cyanide-based monomer and an aqueous solvent is batched into a reactor, and polymerization is performed. initiating; 2) polymerization while continuously adding a maleimide-based monomer and an aqueous solvent to the reactor, and the reaction solution satisfies the following formula 1:
- the present invention is technically characterized in that the concentration of the monomer mixture in the reaction solution introduced before the polymerization is started is limited to a specific range, and the maleimide-based monomer and the aqueous solvent are continuously added after the polymerization is started.
- the concentration of the monomer mixture in the reaction solution added before the polymerization is inevitably reduced. does not exist.
- the vinyl cyanide-based monomer contained in the reaction solution is excessively dissolved in the aqueous solvent, the vinyl cyanide-based monomer participating in the polymerization is reduced, so that the polymer containing a small amount of the vinyl cyanide-based monomer unit is produced at the beginning of the polymerization. was manufactured.
- the amount of the aqueous solvent included in the reaction solution added before the polymerization is started is reduced, so that the concentration of the monomer can be increased.
- the number of vinyl cyanide-based monomers participating in the polymerization increases, so that a polymer having a uniform composition and excellent heat resistance can be prepared throughout the polymerization.
- reaction solution including a monomer mixture including a maleimide-based monomer, a vinyl aromatic monomer, and a vinyl cyanide-based monomer and an aqueous solvent is batched into the reactor, and polymerization is initiated.
- the reaction solution satisfies the value of Equation 1, and preferably, the value of Equation 1 may be 45 to 52.
- the concentration of the monomer mixture included in the reaction solution is appropriate, so that the vinyl cyanide-based monomer that can participate in the polymerization at the initial stage of polymerization increases, and as a result, the composition is uniform throughout the polymerization and A polymer having excellent heat resistance can be prepared.
- polymerization can be performed stably, and the reaction solution is smoothly mixed during polymerization, so that layer separation or suspension break of the reaction solution does not occur.
- Equation 1 when the value of Equation 1 is less than the above range, the concentration of the monomer mixture included in the reaction solution is lowered, and this causes the vinyl cyanide-based monomer to be dissolved in water in excess, so that it participates in polymerization in the initial stage of polymerization.
- the vinyl cyanide-based monomer that can be used is reduced, so that a polymer having a uniform composition throughout polymerization and excellent heat resistance cannot be prepared.
- the value of Formula 1 exceeds the above-mentioned range, the viscosity of the reaction solution becomes too high, and it is impossible to uniformly mix the polymer. As a result, a suspension break occurs, which inevitably stops polymerization.
- the content of the monomer mixture may be 40 to 80 wt%, preferably 60 to 75 wt%, based on the total weight of the monomers added in the method for preparing the polymer. When the above conditions are satisfied, it may be easy to control the polymerization rate.
- the monomer mixture may include 8 to 20% by weight of a maleimide-based monomer, 60 to 75% by weight of a vinyl aromatic monomer, and 10 to 25% by weight of a vinyl cyanide-based monomer.
- the monomer mixture may include 11 to 18 wt% of a maleimide-based monomer, 63 to 72 wt% of a vinyl aromatic monomer, and 14 to 22 wt% of a vinyl cyanide-based monomer.
- the polymerization uses an aqueous solvent as a medium, it is preferable to perform suspension polymerization in which the reaction is easy to control and the water washing process is simple while having a high yield.
- the suspension polymerization may be initiated in the presence of an initiator and a suspending agent.
- the initiator may be present in an amount of 0.001 to 1 parts by weight, preferably 0.01 to 0.5 parts by weight, based on 100 parts by weight of the total of the monomers added in the method for preparing the polymer.
- the polymerization conversion rate of the polymer may be increased, and the polymerization rate may be easily controlled.
- the suspending agent may be present in an amount of 0.5 to 2 parts by weight, preferably 1 to 1.5 parts by weight, based on 100 parts by weight of the total of the monomers added in the method for preparing the polymer. If the above conditions are satisfied, the average particle diameter of the polymer can be adjusted to a desired size, and dispersion stability can be improved.
- polymerization is carried out while continuously adding a maleimide-based monomer and an aqueous solvent to the reactor.
- the maleimide-based monomer and the vinyl aromatic monomer mainly react at the beginning of the polymerization.
- the vinyl aromatic monomer, the vinyl cyanide-based monomer, and the vinyl cyanide-based monomer dissolved in the aqueous solvent react, making it difficult to prepare a polymer having a uniform composition throughout the polymerization. .
- the maleimide-based monomer and the aqueous solvent are continuously added, even if the reactivity ratio between the maleimide-based monomer and the vinyl aromatic monomer is high, the maleimide-based monomer is not sufficiently supplied at the beginning of polymerization. It is inevitably reacted with the nide-based monomer, and as a result, a polymer having a uniform composition can be prepared throughout the polymerization.
- the weight ratio of the maleimide-based monomer added in the step of initiating the polymerization to the maleimide-based monomer added in the polymerization step may be 7.5:92.5 to 30:70, preferably 20:80 to 25: could be 75. If the above conditions are satisfied, the polymerization rate can be easily controlled and a polymer having a uniform composition can be prepared.
- the weight ratio of the aqueous solvent added in the step of initiating the polymerization to the aqueous solvent added in the polymerization step may be 30:70 to 70:30, preferably 35:65 to 65:35.
- a polymer uniformly including vinyl cyanide-based monomer units and having improved heat resistance may be prepared.
- the starting time of the continuous input of the maleimide-based monomer and the aqueous solvent may be a time when the polymerization conversion rate is 0 to 10%, preferably 0 to 5%, respectively.
- a polymer uniformly including vinyl cyanide-based monomer units and having improved heat resistance may be prepared.
- the time when the continuous input of the maleimide-based monomer ends may be a time when the polymerization conversion is 50 to 80%, preferably 60 to 75%.
- the amount of unreacted monomer is reduced, and a polymer having a uniform composition can be prepared.
- the continuous input of the aqueous solvent may be terminated at a time when the polymerization conversion rate is 60 to 80%, preferably 60 to 75%.
- the viscosity of the reaction solution can be reduced, so that polymerization stability can be ensured, and the amount of vinyl cyanide-based monomer dissolved in the aqueous solvent can be reduced.
- the maleimide-based monomer may be continuously added for a time corresponding to 20 to 70% of the total polymerization time, preferably 28 to 70% of the total polymerization time.
- a polymer of a uniform composition can be produced, and a polymerization residue can be reduced.
- the aqueous solvent may be continuously added for a time corresponding to 20 to 70% of the total polymerization time, preferably 28 to 70% of the total polymerization time.
- polymerization may be terminated when the polymerization conversion rate is 95% or more.
- styrene 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 10 parts by weight of N-phenyl maleimide, 56 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added at once, the stirring speed of the reactor was set to 500 rpm, and the temperature of the reactor was raised to 90° C. to initiate polymerization.
- polymerization was carried out while continuously introducing 94 parts by weight of ion-exchanged water into the reactor at a constant rate from the time when the polymerization conversion rate was 5% until the polymerization conversion rate was 63%.
- 30 parts by weight of N-phenyl maleimide was continuously introduced into the reactor at a constant rate to perform polymerization.
- continuous input of ion-exchanged water and N-phenyl maleimide was performed for 150 minutes, respectively.
- polymerization was carried out for 90 minutes while the temperature of the reactor was maintained at 90 °C, and the temperature of the reactor was raised to 120 °C for 20 minutes. After polymerization for 100 minutes while the temperature of the reactor was maintained at 120 °C, polymerization was terminated.
- Formic acid was added to the obtained polymerization slurry to adjust the acid value of the slurry to 2.5, and after removing the dispersant, it was washed with water, dehydrated and dried to prepare a heat-resistant polymer in the form of beads.
- styrene 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 10 parts by weight of N-phenyl maleimide, 64 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added at once, the stirring speed of the reactor was set to 500 rpm, and the temperature of the reactor was raised to 90° C. to initiate polymerization.
- polymerization was carried out for 90 minutes while the temperature of the reactor was maintained at 90 °C, and the temperature of the reactor was raised to 120 °C for 20 minutes. After polymerization for 100 minutes while the temperature of the reactor was maintained at 120 °C, polymerization was terminated.
- Formic acid was added to the obtained polymerization slurry to adjust the acid value of the slurry to 2.5, and after removing the dispersant, it was washed with water, dehydrated and dried to prepare a heat-resistant polymer in the form of beads.
- styrene 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 10 parts by weight of N-phenyl maleimide, 86 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added at once, the stirring speed of the reactor was set to 500 rpm, and the temperature of the reactor was raised to 90° C. to initiate polymerization.
- polymerization was carried out for 90 minutes while the temperature of the reactor was maintained at 90 °C, and the temperature of the reactor was raised to 120 °C for 20 minutes. After polymerization for 100 minutes while the temperature of the reactor was maintained at 120 °C, polymerization was terminated.
- Formic acid was added to the obtained polymerization slurry to adjust the acid value of the slurry to 2.5, and after removing the dispersant, it was washed with water, dehydrated and dried to prepare a heat-resistant polymer in the form of beads.
- styrene 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 10 parts by weight of N-phenyl maleimide, 86 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added at once, the stirring speed of the reactor was set to 500 rpm, and the temperature of the reactor was raised to 90° C. to initiate polymerization.
- polymerization was carried out for 60 minutes while the temperature of the reactor was maintained at 90° C., and the temperature of the reactor was raised to 120° C. for 20 minutes. After polymerization for 100 minutes while the temperature of the reactor was maintained at 120 °C, polymerization was terminated.
- Formic acid was added to the obtained polymerization slurry to adjust the acid value of the slurry to 2.5, and after removing the dispersant, it was washed with water, dehydrated and dried to prepare a heat-resistant polymer in the form of beads.
- styrene 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 10 parts by weight of N-phenyl maleimide, 86 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added at once, the stirring speed of the reactor was set to 500 rpm, and the temperature of the reactor was raised to 90° C. to initiate polymerization.
- Formic acid was added to the obtained polymerization slurry to adjust the acid value of the slurry to 2.5, and after removing the dispersant, it was washed with water, dehydrated and dried to prepare a heat-resistant polymer in the form of beads.
- a reactor 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 40 parts by weight of N-phenyl maleimide, 150 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added in batches, the stirring speed of the reactor was set to 500 rpm, the temperature of the reactor was raised to 90° C., polymerization was initiated, and polymerization was carried out for 240 minutes. Thereafter, polymerization was carried out while the temperature of the reactor was raised to 120° C.
- polymerization was carried out for 180 minutes while maintaining the temperature of the reactor at 90 °C. Thereafter, polymerization was carried out while the temperature of the reactor was raised to 120° C. for 20 minutes, and after polymerization at 120° C. for 100 minutes, polymerization was terminated.
- Formic acid was added to the obtained polymerization slurry to adjust the acid value of the slurry to 2.5, and after removing the dispersant, it was washed with water, dehydrated and dried to prepare a heat-resistant polymer in the form of beads.
- styrene 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 10 parts by weight of N-phenyl maleimide, 150 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added at once, the stirring speed of the reactor was set to 500 rpm, and the temperature of the reactor was raised to 90° C. to initiate polymerization.
- Formic acid was added to the obtained polymerization slurry to adjust the acid value of the slurry to 2.5, and after removing the dispersant, it was washed with water, dehydrated and dried to prepare a heat-resistant polymer in the form of beads.
- styrene 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 10 parts by weight of N-phenyl maleimide, 96 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added at once, the stirring speed of the reactor was set to 500 rpm, and the temperature of the reactor was raised to 90° C. to initiate polymerization.
- Formic acid was added to the obtained polymerization slurry to adjust the acid value of the slurry to 2.5, and after removing the dispersant, it was washed with water, dehydrated and dried to prepare a heat-resistant polymer in the form of beads.
- styrene 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 10 parts by weight of N-phenyl maleimide, 50 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added at once, the stirring speed of the reactor was set to 500 rpm, and the temperature of the reactor was raised to 90° C. to initiate polymerization.
- styrene 48 parts by weight of styrene, 12 parts by weight of acrylonitrile, 10 parts by weight of N-phenyl maleimide, 56 parts by weight of ion-exchanged water, 0.02 parts by weight of 1,1-di(t-butylperoxy)cyclohexane, dicumyl 0.02 parts by weight of peroxide and 1.3 parts by weight of tricalcium phosphate were added at once, the stirring speed of the reactor was set to 500 rpm, and the temperature of the reactor was raised to 90° C. to initiate polymerization.
- Glass transition temperature (°C) The glass transition temperature of 11 intermediate products obtained within the polymerization conversion range shown in Tables 1 and 2 was measured with a differential scanning calorimeter (TA Instrument's Q20), and the highest was shown in Tables 1 and 2 below.
- Standard deviation of glass transition temperature obtained when polymerization conversion rates are 5%, 15%, 30%, 40%, 50%, 55%, 60%, 65%, 72%, 82%, 95%, respectively
- the glass transition temperature of one polymer was measured with a differential scanning calorimeter (Q20 manufactured by TA Instruments), and their standard deviation was calculated.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 value of expression 1 about 56 about 52 about 45 about 45 about 45 Ion-exchanged water Start time of continuous input (polymerization conversion rate, %) 5 5 5 5 5 5 End point of continuous input (polymerization conversion rate, %) 63 60 63 66 72 N-phenyl maleimide Start time of continuous input (polymerization conversion rate, %) 5 5 5 5 5 End point of continuous input (polymerization conversion rate, %) 63 70 63 66 72 Content of the monomer mixture after continuous input (wt%) 40 40 40 40 40 40 40 40 40 40 40 40 40 40 Acrylonitrile monomer unit content (weight%) polymerization conversion rate 0 to 10% or less 5.9 6.3 6.1 5.3 5.8 More than 10% and less than 30% 5.7 6.0 5.8 5.4 5.5 More than 30% and less than 50% 5.6 5.9 5.4 5.1 5.1 More than 50% and less than 70% 4.9 6.0 5.1 4.7 5.0 More than 70% and less than 90% 5.0 7.2 7.4
- Comparative Example 6 value of expression 1 40 0 about 32 about 42 about 58 about 56 Ion-exchanged water Start time of continuous input (polymerization conversion rate, %) - - - 5 5 - End point of continuous input (polymerization conversion rate, %) - - - 72 - - N-phenyl maleimide Start time of continuous input (polymerization conversion rate, %) - 0 5 5 5 5 End point of continuous input (polymerization conversion rate, %) - 45 60 72 - 63 Content of the monomer mixture after continuous input (wt%) 40 40 40 40 40 40 64 Acrylonitrile monomer unit content (weight%) polymerization conversion rate 0 to 10% or less - - 2.1 5.0 - - More than 10% and less than 30% 2.3 3.5 2.4 4.5 - - More than 30% and less than 50% 3.7 4 2.8 4.4 - - More than 50% and less than 70% 5.9
- the value of Formula 1 is about 45 to about 56, and Examples 1 to 5, in which ion-exchanged water and N-phenyl maleimide were continuously added after polymerization, were intermediate with the final product. Since the standard deviation of the content of the acrylonitrile monomer unit and the standard deviation of the glass transition temperature of the product were small, it was found that a polymer having a uniform composition was prepared throughout the polymerization.
- Equation 1 is about 56, in Comparative Example 6 in which the aqueous solvent is not continuously added, the value of Equation 1 gradually increases as N-phenyl maleimide is continuously added. Due to this, the viscosity of the reaction solution during polymerization was excessively high, and polymerization stability was lowered, so that polymerization had to be stopped, and thus a polymer could not be obtained.
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Abstract
Description
| 구분 | 실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | ||
| 식 1의 값 | 약 56 | 약 52 | 약 45 | 약 45 | 약 45 | ||
| 이온교환수 | 연속 투입 개시 시점(중합전환율, %) | 5 | 5 | 5 | 5 | 5 | |
| 연속 투입 종료 시점(중합전환율, %) | 63 | 60 | 63 | 66 | 72 | ||
| N-페닐 말레이미드 | 연속 투입 개시 시점(중합전환율, %) | 5 | 5 | 5 | 5 | 5 | |
| 연속 투입 종료 시점(중합전환율, %) | 63 | 70 | 63 | 66 | 72 | ||
| 연속 투입 종료 후 단량체 혼합물의 함량(중량%) | 40 | 40 | 40 | 40 | 40 | ||
| 아크릴로니트릴 단량체 단위 함량 (중량%) |
중합 전환율 |
0 내지 10 % 이하 | 5.9 | 6.3 | 6.1 | 5.3 | 5.8 |
| 10 % 초과 30 % 이하 | 5.7 | 6.0 | 5.8 | 5.4 | 5.5 | ||
| 30 % 초과 50 % 이하 | 5.6 | 5.9 | 5.4 | 5.1 | 5.1 | ||
| 50 % 초과 70 % 이하 | 4.9 | 6.0 | 5.1 | 4.7 | 5.0 | ||
| 70 % 초과 90 % 이하 | 5.0 | 7.2 | 7.4 | 4.7 | 7.4 | ||
| 90 % 초과 95 % 이하 | 8.4 | 8.0 | 8.3 | 8.4 | 8.1 | ||
| 아크릴로니트릴 단량체 단위 함량의 표준편차 | 1.17 | 0.78 | 1.14 | 1.28 | 1.18 | ||
| 유리전이온도(℃) | 중합 전환율 | 0 내지 10 % 이하 | 197.0 | 197.0 | 198.1 | 196.8 | 197.9 |
| 10 % 초과 30 % 이하 | 195.5 | 193.3 | 196.4 | 195.6 | 195.8 | ||
| 30 % 초과 50 % 이하 | 195.3 | 192.4 | 196.1 | 196.7 | 195.4 | ||
| 50 % 초과 70 % 이하 | 194.4 | 191.4 | 195.5 | 198.7 | 195.4 | ||
| 70 % 초과 90 % 이하 | 196.0 | 188.2 | 195.4 | 199 | 188 | ||
| 90 % 초과 95 % 이하 | 183.1 | 187.3 | 184.8 | 182.2 | 184.3 | ||
| 유리전이온도의 표준편차 | 4.74 | 3.23 | 4.38 | 5.77 | 4.90 | ||
| 구분 | 비교예 1 | 비교예 2 | 비교예 3 | 비교예 4 | 비교예 5 | 비교예 6 | ||
| 식 1의 값 | 40 | 0 | 약 32 | 약 42 | 약 58 | 약 56 | ||
| 이온교환수 | 연속 투입 개시 시점(중합전환율, %) | - | - | - | 5 | 5 | - | |
| 연속 투입 종료 시점(중합전환율, %) | - | - | - | 72 | - | - | ||
| N-페닐 말레이미드 | 연속 투입 개시 시점(중합전환율, %) | - | 0 | 5 | 5 | 5 | 5 | |
| 연속 투입 종료 시점(중합전환율, %) | - | 45 | 60 | 72 | - | 63 | ||
| 연속 투입 종료 후 단량체 혼합물의 함량(중량%) | 40 | 40 | 40 | 40 | 40 | 64 | ||
| 아크릴로니트릴 단량체 단위 함량 (중량%) |
중합 전환율 |
0 내지 10 % 이하 | - | - | 2.1 | 5.0 | - | - |
| 10 % 초과 30 % 이하 | 2.3 | 3.5 | 2.4 | 4.5 | - | - | ||
| 30 % 초과 50 % 이하 | 3.7 | 4 | 2.8 | 4.4 | - | - | ||
| 50 % 초과 70 % 이하 | 5.9 | 6.3 | 3.5 | 4.2 | - | - | ||
| 70 % 초과 90 % 이하 | 10.2 | 8 | 5.9 | 7.1 | - | - | ||
| 90 % 초과 95 % 이하 | 10.5 | 9.1 | 9.5 | 7.9 | - | - | ||
| 아크릴로니트릴 단량체 단위 함량의 표준편차 | 3.33 | 2.18 | 2.61 | 1.44 | - | - | ||
| 유리전이온도(℃) | 중합 전환율 | 0 내지 10 % 이하 | - | - | 201.7 | 199.9 | - | - |
| 10 % 초과 30 % 이하 | 201.5 | 208 | 198.8 | 197.8 | - | - | ||
| 30 % 초과 50 % 이하 | 192.3 | 203.5 | 196.4 | 197.7 | - | - | ||
| 50 % 초과 70 % 이하 | 185.9 | 186.6 | 196.5 | 195.9 | - | - | ||
| 70 % 초과 90 % 이하 | 158.8 | 182.6 | 190.1 | 193.3 | - | - | ||
| 90 % 초과 95 % 이하 | 157.1 | 173.7 | 179.2 | 181.2 | - | - | ||
| 유리전이온도의 표준편차 | 17.99 | 12.92 | 7.40 | 6.20 | - | - | ||
Claims (10)
- 반응기에 말레이미드계 단량체와 비닐 방향족계 단량체와 비닐 시아나이드계 단량체를 포함하는 단량체 혼합물 및 수계 용매를 포함하는 반응 용액을 일괄 투입하고 중합을 개시하는 단계;상기 반응기에 말레이미드계 단량체 및 수계 용매를 각각 연속 투입하면서 중합하는 단계를 포함하고,상기 반응 용액은 하기 식 1을 만족하는 중합체의 제조방법:<식 1>44 ≤ (상기 단량체 혼합물의 중량)/(상기 단량체 혼합물과 수계 용매의 총 중량) × 100 ≤ 56
- 청구항 1에 있어서,상기 식 1의 값은 45 내지 52인 것인 중합체의 제조방법.
- 청구항 1에 있어서,상기 말레이미드계 단량체 및 수계 용매의 연속 투입 개시 시점은 각각 중합전환율이 0 내지 10 %인 시점인 것인 중합체의 제조방법.
- 청구항 1에 있어서,상기 말레이미드계 단량체의 연속 투입 종료 시점은 중합전환율이 50 내지 80 %인 시점인 것인 중합체의 제조방법.
- 청구항 1에 있어서,상기 수계 용매의 연속 투입 종료 시점은 중합전환율이 60 내지 80 %인 시점인 것인 중합체의 제조방법.
- 청구항 1에 있어서,상기 중합을 개시하는 단계에서 투입하는 말레이미드계 단량체와 상기 중합하는 단계에서 투입하는 말레이미드계 단량체의 중량비는 7.5:92.5 내지 30:70인 것인 중합체의 제조방법.
- 청구항 1에 있어서,상기 중합을 개시하는 단계에서 투입하는 수계 용매와 상기 중합하는 단계에서 투입하는 수계 용매의 중량비는 30:70 내지 70:30인 것인 중합체의 제조방법.
- 청구항 1에 있어서,상기 단량체 혼합물의 함량은 상기 중합체의 제조방법에서 투입하는 단량체들의 총 중량에 대하여 40 내지 80 중량%인 것인 중합체의 제조방법.
- 청구항 1에 있어서,상기 단량체 혼합물은상기 말레이미드계 단량체 8 내지 20 중량%;상기 비닐 방향족계 단량체 60 내지 75 중량%; 및상기 비닐 시아나이드계 단량체 10 내지 25 중량%를 포함하는 것인 중합체의 제조방법.
- 청구항 1에 있어서,상기 중합은 현탁 중합인 것인 중합체의 제조방법.
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| US17/783,184 US12286490B2 (en) | 2020-11-05 | 2021-10-18 | Polymer production method |
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| CN202180007047.9A CN114829428B (zh) | 2020-11-05 | 2021-10-18 | 聚合物的制造方法 |
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| KR1020210135820A KR102685444B1 (ko) | 2020-11-05 | 2021-10-13 | 중합체의 제조방법 |
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Also Published As
| Publication number | Publication date |
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| EP4053178A1 (en) | 2022-09-07 |
| CN114829428A (zh) | 2022-07-29 |
| US12286490B2 (en) | 2025-04-29 |
| EP4053178B1 (en) | 2025-07-09 |
| US20230039916A1 (en) | 2023-02-09 |
| EP4053178A4 (en) | 2023-07-05 |
| CN114829428B (zh) | 2023-12-08 |
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