A thermoplastic resin composition comprises (A) about 30 to about 98 wt % of a polycarbonate resin, (B) about 1 to about 50 wt % of a rubber modified acrylic-based graft copolymer, and (C) about 1 to about 69 wt % of a branched copolymer including silicon-based compound. A molded article can be made using the same.

Thermoplastic Resin Composition and Molded Article Using the Same

An emulsion polymer comprising a hard nonelastomeric core, an elastomeric intermediate stage produced in the presence of the core and essentially composed of an acrylic ester and a crosslinking monomer which contains three or more acrylic or methacrylic groups in the molecule, and a hard nonelastomeric final stage produced in the presence of the elastomeric intermediate stage and crosslinked therewith, said polymer being useful as an impact strength modifying agent which, in admixture with a thermoplastic polymethyl methacrylate molding compound for example, yields molded articles exhibiting reduced susceptibility to stress whitening and improved impact strength.

Emulsion polymers for modifying impact strength

An object of the present invention is to propose a novel thermoplastic resin composition having high impact resistance without degrading weather resistance even when the content of an impact modifier is small. A thermoplastic resin composition includes 100 parts by weight of a thermoplastic resin (a) and 0.5 to 20 parts by weight of an impact modifier (b) containing a graft copolymer (b-1) containing at least one (meth)acrylate flexible polymer phase and a rigid polymer phase serving as the outermost part of the graft copolymer, a water-soluble polymer compound (b-2) having a physical gel-forming property, and a gelling agent (b-3). In the thermoplastic resin composition, the content of the water-soluble polymer compound (b-2) having the physical gel-forming property is 0.01 to 3.0 parts by weight relative to 100 parts by weight of the graft copolymer (b-1) and the content of the rigid polymer phase serving as the outermost part in the graft copolymer (b-1) is 0.5 to 10 percent by weight.

Thermoplastic Resin Composition

Blends of (i) an impact resistant interpolymer comprising crosslinked acrylic or methacrylic rubber, crosslinked styrene-acrylonitrile, and uncrosslinked styrene-acrylonitrile polymer components, (ii) a styrene-acrylonitrile copolymer resin, (iii) an acrylic polymer, and (iv) a multistage grafted acrylic elastomer are disclosed. The blends display a good combination of physical properties including gloss, impact strength and tensile properties.

Blends of an ASA terpolymer, an acrylic polymer and an acrylate based impact modifier

One aspect of the invention relates to an acrylate-vinyl aromatic-unsaturated nitrile graft copolymer. The acrylate-vinyl aromatic-unsaturated nitrile graft copolymer can include: a double layered rubbery polymer comprising an inner core layer of alkylacrylate-vinyl aromatic copolymer and an outer core layer of alkylacrylate polymer; and a vinyl aromatic-unsaturated nitrile copolymer shell layer grafted onto the double layered rubbery polymer. Another aspect of the invention relates to a weatherable thermoplastic resin composition including the foregoing acrylate-vinyl aromatic-unsaturated nitrile graft copolymer.

Acrylate-vinyl aromatic-unsaturated nitrile graft copolymer with excellent impact strength, colorability, and weatherability, and thermoplastic resin composition containing the same

Disclosed is a resin composition which is usable for an exterior article without being coated on its surface when molded into the article and is excellent in the color tone and has good impact resistance and weatherability, said composition comprising (1) 10 to 70% by weight of a high-rubber-content graft polymer obtained by polymerizing 50 to 10% by weight of a monomer mixture (C) comprising 10 to 90% by weight of at least one aromatic vinyl monomer and 90 to 10% by weight of at least one ethylenically unsaturated monomer represented by the following general formula: wherein R stands for a hydrogen atom or methyl group and X stands for a group -CN or -COOR, in which R1 stands for an alkyl group having 1 to 8 carbon atoms. in the presence of a latex of a multi-layer crosslinked acryiic rubber particles containing 5 to 30% by weight of a rigid crosslinked resin (A) having a core particle size of 0.15 to 0,40 µ in the interior of the rubber particles"and 45 to 85% by weight of a crosslinked acrylic acid ester polymer (B) comprising an acrylic acid ester as the main component in the outer layer of the rubber particles, so that the total amount of the components (A), (B) and (C) is 100% by weight, (II) 90 to 30% by weight of a thermoplastic resin obtained by polymerizing at least one alkyl acrylate or methacrylate represented by the following general formula: wherein R stands for a hydrogen atom or methyl group, and R, stands for an alkyl group having 1 to 8 carbon atoms, in an amount of at least 90% by weight, and (III) 0 to 50% by weight of a diene type rubber-containing thermoplastic resin, the sum of the amounts of the component (i), (II) and (III) being 100% by weight.

Resin composition usable without being coated

A resin composition for use in uncoated exterior materials markedly excellent in appearance and having high impact resistance and weather resistance wherein 10-70% by weight of a graft copolymer (I) having a high rubber content, 90-30% by weight of a rigid thermoplastic resin (II) comprising 10-90% by weight of at least one aromatic vinyl monomer and 90-10% by weight of at least one ethylenic unsaturated monomer having the following general formula: CH.sub.2 =CRX wherein R represents hydrogen or CH 3 group and X represents CN or COOR 1 group (R 1 represents alkyl group having 1-8 carbon atoms), and 0-50% by weight of a diene rubber-containing thermoplastic resin (III) are blended together so that the total amount of components (I) through (III) is 100% by weight, said graft copolymer (I) having a high rubber content being obtained by polymerizing 50-10% by weight of a monomer mixture (c) comprising 10-90% by weight of at least one aromatic vinyl monomer and 90-10% by weight of at least one ethylenic monomer having the following general formula: CH.sub.2 =CRX wherein R represents hydrogen or CH 3 group and X represents CN or COOR 1 group (R 1 represents alkyl group having 1-8 carbon atoms) in the presence of a latex of a crosslinked acrylic rubber having a multi-layer structure which contains, in its particle, 5-30% by weight of a rigid crosslinked resin (a) having a core particle diameter of 0.25-0.40μ and of which outer layer part is constructed of 45-85% by weight of a crosslinked acrylic ester type polymer (b) constituted mainly of an acrylic ester, so that the total amount of components (a) through (c) is 100% by weight.

Resin composition for use in uncoated exterior material

PURPOSE:To provide a methacrylic resin molding material low in carbide deposition on the screw(s) during the continuous operation of a molding machine in its injection molding, etc. CONSTITUTION:The level of residual alkylmercaptan in 100 pts.wt. of a methacrylic resin is reduced to mol; thereby, the objective molding material in which carbide development into the resulting molded products in prevented for a long period of time during the continuous operation of a molding machine can be obtained without impairing the characteristics inherent in the methacrylic resin.

Methacrylic resin molding material

PURPOSE:To obtain the title cast board excellent in mechanical properties, appearance, etc, suitable for signboards, sanitary applications, etc, by incorporating a methyl methacrylate resin with a crosslinked rubbery copolymer and a silicone copolymer CONSTITUTION:(A) 100 ptswt of a methyl methacrylate resin is incorporated with (B) a copolymer prepared by grafting to (1) a crosslinked rubbery copolymer of butyl acrylate (2) methyl acrylate at an amount of 2-30 ptswt in terms of the component (1) Thence, the resultant composition is dispersed with (C) 0001-05 ptswt of a copolymer of (3) 10-90wt% of a compound of formula I (R1 is H or methyl; R2 is aliphatic group, etc) and (4) 90-10wt% of a radical- polymerizable silicone of formula II (R3 is H or CH3; R4 is alkyl, etc; l and n are each 0-2; m is 0 or 1; x is 1-100), thus obtaining the objective cast board

Methacrylic resin cast board excellent in both impact resistance and transparency and production thereof

PURPOSE: To provide the titled resin compsn having excellent appearance and good impact resistance and weather resistance, by blending a graft polymer having a specified high rubber content with a rigid resin CONSTITUTION: A mixt (c) of an arom vinyl monomer and a monomer of the formula [wherein R is H, CH 3 ; X is CN, COOR 1 (wherein R 1 is 1W8C alkyl)] in a weight ratio of 1:9W9:1 is polymerized in the presence of a multi-layer construction crosslinked acrylic rubber latex composed of 5W30wt% rigid crosslinked resin (a) (wick particle having a particle diameter of 025W4μ) constituting the inner layer part and 45W85wt% crosslinked acrylic ester polymer (b) constituting the outer layer part, in such a proportion that the combined weight of (a), (b) and (c) becomes 100wt%, to produce a graft polymer (I) having a high rubber content Then 90W30wt% rigid thermoplastic resin (II) resulting from the copolymerization of an arom vinyl monomer with the monomer of the formula and 0W50wt% thermoplastic resin (III) contg a diene rubber are blended with 10W70wt% graft polymer (I) in such a proportion that the combined weight of (I), (II) and (III) becomes 100wt% COPYRIGHT: (C)1981,JPO&Japio

Kawachi Yasunori

Papers

Resin composition usable without being coated

Resin composition for use in uncoated exterior material

Methacrylic resin molding material

Methacrylic resin cast board excellent in both impact resistance and transparency and production thereof

Resin composition for noncoated cladding