JPH0748491A - Flame-retardant base resin composition and flame-retardant thermoplastic resin composition - Google Patents

Abstract

(57) [Abstract] [Purpose] A flame-retardant base resin composition and flame-retardant which has excellent flame-retardant properties without using halogen-containing flame-retardant agents and does not generate harmful substances such as dioxins during molding and combustion. A flame thermoplastic resin composition is provided. [Constitution] (a) 0 to 70% by weight of rubbery polymer and (b)
Polymer component 1 containing a monomer selected from aromatic vinyl monomers, vinyl cyanide monomers and maleimide-based monomers
It is a thermoplastic resin composed of 0 to 30% by weight, and a thermoplastic resin (a) having a graft ratio of 10 to 150% by weight when a rubbery polymer is used, and a phenol resin (b). Combustible base resin composition; and (a) / (b) / phosphate compound (c) above (a) / (b) / (c) = 40 to 96/1
A flame-retardant thermoplastic resin composition which is contained in a mixing ratio of 40/3 to 40 (% by weight).

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a flame-retardant base resin composition and a flame-retardant thermoplastic resin composition having excellent flame-retardant performance.

[0002]

2. Description of the Related Art Styrenic resins represented by ABS resins and impact-resistant polystyrene resins are used in a wide range of fields because of their excellent balance of physical properties. When these resins are used in electrical equipment such as office automation equipment, in the United States, U
Since the L standard (standard for flame retardant plastics for electric devices) is defined, highly flame retardant materials are used. However, conventional flame-retardant styrenic resins are usually achieved by adding a large amount of halogen-based compounds.Therefore, hydrogen halide gas is generated by thermal decomposition of halogen compounds during resin molding and incineration. However, it is a problem in terms of environmental toxicity and human toxicity. In order to solve this problem, development of a halogen-free or low-halogen flame-retardant styrene resin is desired. There is a method of using a phosphate-based compound as a flame-retardant method other than the addition of a halogen compound, but the flame-retardancy was hardly improved even when the phosphate-based compound was added to an ABS resin or a high impact polystyrene resin.

[0003]

DISCLOSURE OF THE INVENTION The present inventors
As a result of intensive studies on a flame-retardant thermoplastic resin composition comprising a resin, it was found that a flame-retardant base resin composition can be obtained by blending an ABS resin with a phenol resin, and further, this flame-retardant base resin composition. It has been found that a flame-retardant thermoplastic resin composition can be obtained by blending a phosphate compound with, and the present invention has been completed based on such findings.

[0004]

The invention of claim 1 provides a flame-retardant base resin composition containing the following components (a) and (b). Component (a) (a) A polymer containing 0 to 70% by weight of a rubbery polymer and (b) a monomer selected from an aromatic vinyl monomer, a vinyl cyanide monomer and a maleimide-based monomer. Combined components 100-3
Thermoplastic resin consisting of 0% by weight and having a graft ratio of 10 to 150% by weight when a rubbery polymer is used (b) component phenol resin The invention of claim 2 provides The components (a) and (b) and the phosphate compound (c) are (a) / (b) / (c) = 4.
The flame-retardant thermoplastic resin composition is characterized by being contained in a blending ratio of 0 to 96/1 to 40/3 to 40 (% by weight).

The component (a) of claims 1 and 2 will be described. The component (a) is composed of (i) 0 to 70% by weight of a rubbery polymer and (b) a monomer selected from aromatic vinyl monomers, vinyl cyanide monomers and maleimide monomers. Is a thermoplastic resin comprising 100 to 30% by weight of the following polymer component, and the graft ratio when a rubbery polymer is used is 10 to 150% by weight.

Examples of the rubbery polymer (a) include polybutadiene, styrene-butadiene copolymers, acrylonitrile-butadiene copolymers and other (meth) acrylic acid ester-butadiene copolymers, and other conjugated diene polymers.
Acrylic rubber, ethylene-α-olefin copolymer, ethylene-α-olefin-polyene copolymer, block copolymer consisting of aromatic vinyl compound and conjugated diene compound, and hydride of conjugated diene polymer are used. be able to. The α-olefin used in the ethylene-α-olefin copolymer has 3 to 20 carbon atoms.
Unsaturated hydrocarbon compounds having a number of, for example, propylene, butene-1, pentene-1, hexene-1,
Heptene-1, 4-methylbutene-1, 4-methylpentene-1, etc. are mentioned. Further, as a block copolymer composed of an aromatic vinyl compound and a conjugated diene compound,

[Chemical 1] Those represented by are preferred. Examples of the hydride of the conjugated diene-based polymer include the above block copolymers, random copolymers of aromatic vinyl compounds and conjugated diene compounds, and polybutadiene blocks having a 1,2-vinyl structure of 20% or less. It has a segment (C) and a block segment (D) composed of a polybutadiene or an aromatic vinyl-butadiene copolymer in which the 1,2-vinyl structure of the bonded butadiene portion is 30 to 95%, and is represented by the following general formula. Hydrogenated block copolymers are preferred.

[Chemical 2] The hydrogenation rate of the hydride of the rubber-like polymer (a) is preferably at least 80% or more, more preferably 90% or more, and particularly preferably 95% of the olefinic unsaturated bond in the conjugated diene compound polymer. That is all. The aromatic vinyl compound is preferably styrene, and the conjugated diene compound is preferably butadiene and isoprene.

The polymer component (B) is composed of a monomer selected from an aromatic vinyl monomer, a vinyl cyanide monomer and a maleimide type monomer. As the aromatic vinyl monomer, styrene, α-methylstyrene,
Examples thereof include bromostyrene, dibromostyrene, tribromostyrene, chlorostyrene, dichlorostyrene and α-ethylstyrene. Among the above aromatic vinyl monomers, styrene and α-methylstyrene are preferable. Further, as the aromatic vinyl monomer, a nucleus-substituted methylated aromatic vinyl monomer can be used. Examples of the nucleus-substituted methylated aromatic vinyl monomer include o-methylstyrene, m-methylstyrene, p-methylstyrene, and α-methylstyrene derivatives thereof, and mixtures of two or more thereof, and nucleus substitution. Examples include dimethylstyrene, nucleus-substituted trimethylstyrene, nucleus-substituted tetramethylstyrene, nucleus-substituted pentamethylstyrene, and the like. Among these, o-methylstyrene, m-methylstyrene, p-methylstyrene, and a mixture of two or more thereof are preferable. Examples of the vinyl cyanide monomer include acrylonitrile and methacrylonitrile. Of these, acrylonitrile is preferable. Examples of the maleimide-based monomer include maleimide, N-methylmaleimide, N-ethylmaleimide, N
-Propylmaleimide, N-isopropylmaleimide,
Examples thereof include N-cyclohexylmaleimide, N-phenylmaleimide, N- (p-bromophenyl) maleimide, tribromophenylmaleimide and N- (p-chlorophenyl) maleimide. Among these, maleimide, N-phenylmaleimide, N-cyclohexylmaleimide and tribromophenylmaleimide are preferable.

The content of the rubbery polymer (a) in the component (a) is 0 to 70% by weight, preferably 0 to 60% by weight. When the rubbery polymer (ii) is an essential component,
In order to obtain the effect of addition of the rubbery polymer (ii), preferably 5 to 70% by weight, more preferably 10 to 60% by weight.
Added. When the content of the rubbery polymer (ii) exceeds 70% by weight, the flame-retardant base resin composition and the flame-retardant thermoplastic resin composition of the present invention (hereinafter, collectively referred to as the composition of the present invention in some cases). The surface gloss and flame retardancy of the molded article of 1) are reduced, which is not preferable. The polymer component (b) in the component (a) is a polymer of the above monomers. The content of the polymer component (b) in the component (a) is 100 to 30% by weight,
It is preferably 100 to 40% by weight. When the rubbery polymer (a) is an essential component, it is preferably 95 to 3
0% by weight, more preferably 90 to 40% by weight is used.
When the component (a) contains the rubbery polymer (a), the graft ratio is 10 to 150% by weight, preferably 20 to 120.
% By weight. When the graft ratio is less than 10% by weight,
The effect of adding the rubbery polymer (ii) cannot be sufficiently exhibited, and, for example, sufficient impact resistance cannot be obtained. On the other hand, when it exceeds 150% by weight, dripping (melt dripping) is likely to occur during combustion. Examples of the polymerization method of the component (a) include a bulk polymerization method, a solution polymerization method, a suspension polymerization method, an emulsion polymerization method and a precipitation polymerization method, and a combination of these methods can also be used.

The amount of the component (a) used in the flame-retardant base resin composition of the present invention is usually 1 to 99% by weight, preferably 5 to 95% by weight, more preferably 20 to 90%. % By weight, particularly preferably 40-85% by weight
Is. If it is less than 1% by weight, the surface appearance of the molded product is inferior and 99
If it exceeds 5% by weight, the flame retardancy decreases. The amount of the component (a) used in the flame-retardant thermoplastic resin composition of the second aspect of the invention is 40 to 96% by weight, preferably 50 to 90% by weight, more preferably 50 to 80% by weight. If it is less than 40% by weight, the surface appearance of the molded product is inferior, and if it exceeds 96% by weight, the flame retardancy decreases.

(B) of the invention of claims 1 and 2
The components will be described. The phenol resin as the component (b) includes a resol-based phenol resin and a novolac-based phenol resin, and a heat-infusible or heat-meltable granular phenol resin is used. As the novolac-based phenol resin, phenol formaldehyde novolac resin, tertiary butylphenol formaldehyde novolac resin, p-octylphenol formaldehyde novolac resin, p-cyanophenol formaldehyde novolac resin, and the like are preferable, and further, copolymers and mixtures thereof are also preferable. The novolac-based phenol resin preferably has an average molecular weight of 300 to 10,000. More preferable as the phenol resin is a resol-based phenol resin. Further, a resole phenolic resin containing a reactive methylol group is particularly preferably used, and the content of the methylol group is 3 to 15
Weight percent is preferred.

The amount of the component (b) used in the flame-retardant base resin composition of the present invention is usually 1 to 99% by weight, preferably 5 to 95% by weight, more preferably 10 to 95% by weight. It is 80% by weight, particularly preferably 15 to 60% by weight. If it is less than 1% by weight, the flame retardancy is not improved and 99
If it exceeds 5% by weight, the flame retardance is lowered and the surface appearance of the molded product is deteriorated. The amount of component (b) used in the flame-retardant thermoplastic resin composition of claim 2 is 1 to 40% by weight,
Preferably 3 to 30% by weight, more preferably 3 to 20
% By weight. If it is less than 1% by weight, flame retardancy is not improved,
If it exceeds 40% by weight, the flame retardance is lowered and the surface appearance of the molded product is deteriorated.

The component (c) of the invention of claim 2 will be described. Examples of the phosphate compound as the component (c) include

[Chemical 3] Compounds represented by are preferred. Specific examples of these compounds include trimethyl phosphate, triethyl phosphate, tripropyl phosphate, tributyl phosphate, tripentyl phosphate, trihexyl phosphate, tricyclohexyl phosphate, triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, tris-. (Chloroethyl)-
Phosphate, tris- (dichloroethyl) phosphate, tris- (bromoethyl) -phosphate, tris- (dibromoethyl) -phosphate, tris- (dibromopropyl) -phosphate, tris- (chlorobromopropyl) -phosphate, tris- (dibromo Butyl) -phosphate, tris- (chlorobromobutyl)
-Phosphate, tris- (chlorophenyl) -phosphate, tris- (dichlorophenyl) -phosphate, tris- (bromophenyl) -phosphate, tris- (dibromophenyl) -phosphate, tris-
(Tribromophenyl) -phosphate, dimethylethyl phosphate, methyldibutylphosphate, ethyldipropylphosphate, 4-chlorophenyldiphenylphosphate, phenyldibromophenylphosphate and the like can be mentioned.

These compounds (phosphate ester) can be used alone or in combination of two or more kinds.
Of these, those preferably used are trimethyl phosphate, tributyl phosphate, triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, tris- (chloroethyl) phosphate and the like. Above all, when trixylenyl phosphate is used, a molded product having a high heat distortion temperature can be obtained because of its high melting point. Also, a condensation type phosphoric acid ester can be used. Preferred are the following general formulas:

[Chemical 4] The compound represented by In particular, in the above general formula, R ₁ , R ₂ and R ₃ are all phenyl groups,
It is more preferable that ₄ , R ₅ , R ₆ and R ₇ are all hydrogen atoms, but of course the present invention is not limited thereto. The degree of polymerization n is preferably 1 to
20 and more preferably 1 to 10. These compounds can be used alone or in combination of two or more kinds.

The above-mentioned component (c) can be used alone or in combination of two or more kinds, and the amount thereof is 3 to 40% by weight, preferably 5 in the flame-retardant thermoplastic resin composition of the present invention.
~ 30% by weight. If the amount used is less than 3% by weight, the flame retardancy is not improved, and if it exceeds 40% by weight, a defective phenomenon tends to occur on the surface of the molded product.

The thermoplastic resin composition and flame-retardant base resin composition of the present invention may further contain other thermoplastic polymers. In that case, as a preferable composition range, the component (a) of the present invention is 20 to 94% by weight, the component (b) is 1 to 40% by weight, the component (c) is 0 to 40% by weight, and other thermoplastic polymer 2 to It is 50% by weight.

Other thermoplastic polymers include polyamides, thermoplastic polyesters, liquid crystal polymers, polysulfones, polycarbonates, polyacetals, thermoplastic isocyanate resins, thermoplastic urea resins, polyphenylene ethers, polyimides, polyarylketones, polyamide elastomers, polyesters. Examples thereof include elastomers. Specific examples of preferable polyamides include nylon 6,6, nylon 6,9, nylon 6,10, nylon 6,12, nylon 6, nylon 12, nylon 11, nylon 4,6. A polyester elastomer may be used as the thermoplastic polyester. Preferred thermoplastic polyesters include polyethylene terephthalate, polybutylene terephthalate, polyesters composed of terephthalic acid and / or isophthalic acid and bisphenol A, and p-
Mention may be made of polyesters having a hydroxybenzoic acid residue.

The above polysulfone has the following repeating units:

[Chemical 5] The polysulfone having a structure of

[Chemical 6] And those having a repeating unit of.

As the above-mentioned polycarbonate, one represented by the following general formula (I) or (II) is used.

[Chemical 7] Preferred polycarbonates are those in which Ar is p-phenylene and A is isopropylidene. The polyacetal is a polymer obtained by polymerizing formaldehyde or trioxane. Polyacetal produced from formaldehyde is

[Chemical 8] It has a structure represented by Polyacetals are typically end groups converted to esters or ethers to increase heat and chemical resistance. Also included are polyacetal copolymers, which are monomers or prepolymers of formaldehyde and other materials capable of providing active hydrogen, such as alkylene glycols, polythiols, vinyl acetate-acrylic acid copolymers. Included are polymers, block copolymers with butadiene / acrylonitrile polymers or derivatives thereof. As the polyacetal obtained by the polymerization of trioxane, those obtained by copolymerizing with other copolymerizable compounds are typical, and representative examples of the copolymerizable compounds include aldehydes, cyclic ethers, vinyl compounds,
Mention may be made of ketones, cyclic carbonates, epoxides, isocyanates and ethers. These compounds include ethylene oxide, 1,3-dioxolane, 1,3-dioxane, epichlorohydrin, propylene oxide, isobutylene oxide and styrene oxide.

Examples of the thermoplastic isocyanate resin include toluene diisocyanate (TDI), diphenylmethane 4,4-diisocyanate (MDI) and a wide range of polyols such as polyoxyethylene glycol, polyoxypropylene glycol, hydroxy-terminated polyester and polyoxyethylene. Polyurethanes made from oxypropylene glycol are preferred.
These thermoplastic polyurethanes have a well-defined crystalline melting point of 120 ° C. or higher, preferably 150 to 200 ° C.

The above polyphenylene ether has the following general formula:

[Chemical 9] Is a polymer having a repeating structural unit represented by: Specific examples thereof include poly (2,6-dimethylphenylene-1,4-ether), poly (2,6-diethylphenylene-1,4-ether), poly (2,6-dibromophenylene-1, 4-ether), poly (2-methyl-6)
-Ethylphenylene-1,4-ether), poly (2-
(Chloro-6-methylphenylene-1,4-ether) and the like. These polymers may be used alone or
You may use it in combination of 2 or more types.

In the production of the composition of the present invention, it may be possible to improve the impact resistance and the surface appearance of a molded article by using a compatibilizing agent in order to improve the compatibility between the polymers. is there. As the compatibilizing method, an acid anhydride group during the kneading, a hydroxyl group, an amino group, an epoxy group, an oxazoline group, a functional group-containing unsaturated compound having a functional group selected from the imide group and a peroxide if necessary. There are a method of making it exist, a method of using another polymer having the above functional group, and the like. The polymer having the functional group is a random, block or graft copolymer of the unsaturated compound having the functional group and another vinyl monomer copolymerizable therewith. Specific examples of the compatibilizer include styrene-
Glycidyl methacrylate copolymer, styrene-maleic anhydride copolymer, styrene-methacrylic acid copolymer,
A copolymer such as a styrene-acrylonitrile-methacrylic acid copolymer obtained by copolymerizing styrene with the above functional group-containing unsaturated compound and, if necessary, one or more other vinyl monomers copolymerizable therewith. Is mentioned. Further, ethylene-glycidyl methacrylate copolymer, ethylene-glycidyl methacrylate-vinyl acetate copolymer and the like,
Also included are copolymers obtained by copolymerizing ethylene with the above-mentioned functional group-containing unsaturated compound and, if necessary, one or more other vinyl monomers copolymerizable therewith. Further, these copolymers also include those obtained by graft-reacting other polymers on these ethylene copolymers. Other polymers to be graft-reacted include, for example, radically polymerizable vinyl monomers such as poly (meth) acrylic acid alkyl ester, polystyrene, styrene-acrylonitrile copolymer, and styrene- (meth) acrylic acid alkyl ester copolymer. The polymer polymerized using the body is mentioned.

The composition of the present invention is preferably used in various extruders, Banbury mixers, kneaders, rolls, etc., preferably 20
It can be obtained by kneading each component in the range of 0 ° C to 350 ° C. Upon kneading, the respective components may be kneaded together, or a multi-stage divided kneading method in which after kneading arbitrary components and then adding the remaining components and kneading can be carried out. A preferable kneading method is a method in which a continuous kneader and an extruder are used in combination, or a method in which an extruder is used. As the extruder, a twin-screw co-rotating extruder is particularly preferable.

When using the composition of the present invention, glass fiber, carbon fiber, metal fiber, glass beads, asbestos, clay, mica, calcium carbonate, potassium titanate whiskers, talc, calcium carbonate, aramid fiber, sulfuric acid. Known fillers such as barium, glass flakes and fluororesins can be used alone or in combination.
As the shape of the glass fiber and the carbon fiber among these fillers, those having a fiber diameter of 6 to 60 μ and a fiber length of 30 μ or more are preferable. These fillers are preferably contained in an amount of 5 to 150 parts by weight based on 100 parts by weight of the composition of the present invention.

The composition of the present invention may also be used by adding other known additives such as flame retardants, antioxidants, plasticizers, colorants and lubricants. Further, other known polymers may be appropriately blended depending on the required performance. The composition of the present invention can be molded into various molded articles by molding methods such as injection molding, sheet extrusion, vacuum molding, profile molding, and foam molding. Various molded products obtained by the above-mentioned molding method are automobile exteriors, interior members or various electric / electronic-related parts utilizing their excellent properties.
It can be used as a housing.

[0025]

The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.

(A ) Production of Component (1) Graft Copolymer (a-1) A separable flask equipped with a reflux condenser, a thermometer and a stirrer was added with polybutadiene rubber latex as an initial component in a solid content of 40. Part, ion-exchanged water 65 parts,
Add 0.35 parts of rosin acid soap, 15 parts of styrene and 5 parts of acrylonitrile, and then ion-exchange 0.2 parts of sodium pyrophosphate, 0.01 parts of ferrous sulfate heptahydrate, and 0.4 parts of glucose. A solution dissolved in 20 parts of water was added. And cumene hydroperoxide 0.07
After adding 1 part to start polymerization and polymerizing for 1 hour, 45 parts of ion-exchanged water as an increment component, 0.7 part of rosin acid soap, 30 parts of styrene, 10 parts of acrylonitrile.
Parts and cumene hydroperoxide 0.01 parts 2
The reaction was completed by continuously adding over time and polymerizing for an additional hour. Sulfuric acid was added to the obtained copolymer latex to coagulate, washed with water and dried to obtain the graft copolymer (a
-1) was obtained. (2) Graft copolymer (a-2) In a separable flask equipped with a reflux condenser, a thermometer, and a stirrer, 40 parts of polybutadiene rubber latex as an initial component in terms of solid content, 65 parts of ion-exchanged water,
Add 0.35 parts of rosin acid soap, 10 parts of styrene, 5 parts of p-methylstyrene, 5 parts of acrylonitrile and 1 part of N-phenylmaleimide, then 0.2 parts of sodium pyrophosphate, ferrous sulfate heptahydrate. A solution prepared by dissolving 0.01 part and 0.4 part of glucose in 20 parts of ion-exchanged water was added. And cumene hydroperoxide 0.07
After adding 1 part to start polymerization and polymerizing for 1 hour, 45 parts of ion-exchanged water as an increment component, 0.7 part of rosin acid soap, 15 parts of styrene, 5 parts of p-methylstyrene.
Part, acrylonitrile 15 parts, N-phenylmaleimide 4 parts and cumene hydroperoxide 0.01 part were continuously added over 2 hours, and the reaction was completed by further polymerizing for 1 hour. Sulfuric acid was added to the obtained copolymer latex to coagulate, washed with water and dried to obtain a graft copolymer (a-2).

(3) Copolymer (a-3) In a separable flask equipped with a reflux condenser, thermometer and stirrer, 250 parts of ion-exchanged water, 3.0 parts of potassium rosinate, 75 parts of styrene, acrylonitrile. 25 parts and 0.1 part of t-dodecyl mercaptan are added, and then 0.05 part of sodium ethylenediaminetetraacetate, 0.002 part of ferrous sulfate heptahydrate and 0.1 part of sodium formaldehyde sulfoxylate are ion-exchanged. A solution dissolved in 8 parts of water was added. Then, 0.1 part of diisopropylbenzene hydroperoxide was added to start the polymerization, and the reaction was completed by polymerizing for about 1 hour. Sulfuric acid was added to the obtained copolymer latex to coagulate, washed with water and dried to obtain a copolymer (a-3). (4) Copolymer (a-4) In a separable flask equipped with a reflux condenser, a thermometer and a stirrer, 250 parts of ion-exchanged water, 3.0 parts of potassium rosinate, 45 parts of styrene, 25 parts of acrylonitrile,
30 parts of N-phenylmaleimide and 0.1 part of t-dodecyl mercaptan are added, followed by 0.05 part of sodium ethylenediaminetetraacetate, ferrous sulfate heptahydrate 0.002.
And 0.1 part of sodium formaldehyde sulfoxylate were dissolved in 8 parts of deionized water.
Then, 0.1 part of diisopropylbenzene hydroperoxide was added to start the polymerization, and the reaction was completed by polymerizing for about 1 hour. Sulfuric acid was added to the obtained copolymer latex to coagulate, washed with water and dried to obtain a copolymer (a-4).

[0028]

[Table 1]

Component b (b-1) Molten self-curing phenol resin manufactured by Kanebo Co., Ltd. Bellpearl S-890 (b-2) Phenol formaldehyde novolac resin (Mitsui Toatsu Chemicals Inc. # 1000ws standard softening point 99-
105 ° C) c Component (C-1) triphenyl phosphate (C-2) Trixylenyl phosphate

[Examples 1 to 6; Comparative Examples 1 and 2] The components and proportions shown in Table 2 were blended, then mixed by a Henschel type mixer, and further mixed by a vented extruder.
A flame-retardant resin composition (a flame-retardant base resin composition and a flame-retardant thermoplastic resin composition) was obtained by melt-kneading at 20 ° C. and pelletizing. A test piece was prepared by molding the obtained flame-retardant resin composition with an injection molding machine in which the cylinder temperature was set to 230 ° C. Table 2 shows the evaluation results of the obtained flame-retardant resin composition. Each physical property of the obtained composition was evaluated by the following methods. (1) Flame retardance a. I. (Oxygen index), test piece: 1/8 ″ × 1 /
2 ″ × 5 ″ b. Flammability test according to UL-94 Test piece: 1/16 ″ × 1/2 ″ × 5 ″ (2) Izod impact strength ASTM D256 1/4 ″, 23 ° C, notched [ k
g · cm / cm)

[0031]

[Table 2]

As is clear from the results shown in Table 2, the compositions of Examples 1 and 2 are flame-retardant base resin compositions of the present invention, and the compositions intended by the present invention have been obtained. . Moreover, the compositions of Examples 3 to 6 are the flame-retardant thermoplastic resin compositions of the present invention, and the compositions intended by the present invention have been obtained. On the other hand, the composition of Comparative Example 1 does not contain the component (b) and is inferior in flame retardancy to the compositions of Examples 1 and 2. In addition, the composition of Comparative Example 2
It is a flame-retardant thermoplastic resin composition containing no component (b), and is inferior in flame retardancy to the compositions of Examples 3 to 6.

[0033]

The flame-retardant base resin composition and the flame-retardant thermoplastic resin composition of the present invention have excellent flame retardancy without using a halogen-containing flame retardant, and can be used during molding and burning. Sometimes harmful substances such as dioxins are not generated. Therefore, it is possible to mold large moldings and complicated moldings such as office equipment such as 0A equipment and electric equipment, is a material excellent in practical use, has an extremely large industrial value, and is extremely useful in industry. .

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenki Furuyama 2-11-24 Tsukiji, Chuo-ku, Tokyo Japan Synthetic Rubber Co., Ltd.

Claims (2)

[Claims] 1. A flame-retardant base resin composition containing the following component (a) and component (b). Component (a) (a) A polymer containing 0 to 70% by weight of a rubbery polymer and (b) a monomer selected from an aromatic vinyl monomer, a vinyl cyanide monomer and a maleimide-based monomer. Combined components 100-3
Thermoplastic resin consisting of 0% by weight and having a graft ratio of 10 to 150% by weight when a rubbery polymer is used (b) Component phenol resin 2. A component (a), a component (b), and a component (c) described below are (a) / (b) / (c) = 40-96 / 1-40 / 3-
A flame-retardant thermoplastic resin composition containing 40 (wt%) in a blending ratio. Component (a) (a) A polymer containing 0 to 70% by weight of a rubbery polymer and (b) a monomer selected from an aromatic vinyl monomer, a vinyl cyanide monomer and a maleimide-based monomer. Combined components 100-3
Thermoplastic resin consisting of 0% by weight and having a graft ratio of 10 to 150% by weight when a rubbery polymer is used (b) component phenol resin (c) component phosphate compound