# US 4,393,169 A · Moldable resin compositions containing polycarbonate styrene polymer and three phase graft polymer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,393,169 A - Document ID: US4393169A - Status: Granted - Kind: A - Application number: 06/320,629 - Filed: 1981-11-12 - Granted: 1983-07-12 - Earliest claimed: 1981-11-12 - Assignees: Daicel Chemical Industries, Ltd. - Inventors: Takeshi Moriwaki; Shinji Tokuhara - Web page: https://patentgrep.com/patent/US4393169A ## CPC - C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates - C08F 285/00: Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers - C08L 25/00: 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 - C08L 51/00: Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds (for ABS polymers C08L55/02); Compositions of derivatives of such polymers - Y10S 525/902: Core-shell - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A moldable resin composition comprising: (A) an aromatic vinyl-type polymer; (B) a polycarbonate; and (C) a three-stage polymerization product produced by three-stage emulsion polymerizations of an aromatic vinyl-type monomer, butadiene, alkyl methacrylate, etc. ## Claims ### Claim 1 A thermoplastic moldable resin composition, the resin components of which consist essentially of a blend of I. 100 parts by weight of a mixture comprising (A) from 95 to 5 parts by weight of an aromatic vinyl polymer, and (B) from 5 to 95 parts by weight of thermoplastic polycarbonate resin, and II. from 1 to 20 parts by weight of (C) a three-stage polymer produced by three, sequential, emulsion polymerization stages, wherein (1) in the first emulsion polymerization stage, a mixture of (a) from 50 to 100 percent by weight of first, aromatic, vinyl monomer, (b) from 0 to 50 percent by weight of second, vinyl monomer different from said first monomer and copolymerizable therewith and (c) from 0 to 10 percent by weight of a multifunctional bridge-forming monomer, is emulsion polymerized to obtain a first stage polymer, (2) in the second emulsion polymerization stage, a mixture of (a) said first stage polymer and (b) a monomer mixture of (i) from 50 to 100 percent by weight of butadiene, (ii) from 0 to 50 percent by weight of a third, vinyl monomer copolymerizable with said butadiene, and (iii) from 0 to 1 percent by weight of a multifunctional bridge-forming monomer, is emulsion polymerized to obtain a second stage polymer, and (3) in the third emulsion polymerization stage, a mixture of (a) said second stage polymer and (b) a monomer mixture of (i) from 50 to 100 percent by weight of an alkyl methacrylate having 1 to 4 carbon atoms in the alkyl group, (ii) from 0 to 50 percent by weight of a fourth, vinyl monomer different from said alkyl methacrylate and copolymerizable therewith, and (iii) from 0 to 10 percent by weight of a multifunctional bridge-forming monomer, is emulsion polymerized. ### Claim 2 (depends on 1) A thermoplastic moldable resin composition as claimed in claim 1, in which the polycarbonate resin (B) is prepared from a 4,4'-dihydroxydiphenylalkane. ### Claim 3 (depends on 1) A thermoplastic moldable resin composition as claimed in claim 1, in which said aromatic vinyl polymer (A) is selected from the group consisting of polystyrene, styrene-acrylonitrile copolymer, styrene-methyl methacrylate copolymer, styrene-maleic anhydride copolymer, and acrylonitrile-butadiene-styrene copolymer, said copolymers containing at least 30 percent by weight of styrene. ### Claim 4 (depends on 1) A thermoplastic moldable resin composition as claimed in claim 1, in which said first, aromatic vinyl monomer employed in the first emulsion polymerization stage is selected from the group consisting of styrene, vinyltoluene and halogen-substituted styrenes, and said second vinyl monomer copolymerizable with said first aromatic vinyl monomer is selected from the group consisting of acrylonitrile, acrylic acid esters and methacrylic acid esters. ### Claim 5 (depends on 1) A thermoplastic moldable resin composition as claimed in claim 1, in which said multifunctional bridge-forming monomer is selected from the group consisting of divinylbenzene, diallyl maleate, diallyl fumarate, allyl methacrylate and ethyleneglycol dimethyacrylate. ### Claim 6 A thermoplastic moldable resin composition, the resin components of which consist essentially of a blend of I. 100 parts by weight of a mixture comprising (A) from 95 to 5 parts by weight of a copolymer of styrene and methyl methacrylate containing from 50 to 90 percent by weight of styrene, (B) from 5 to 95 parts by weight of thermoplastic polycarbonate resin based on a 4,4'-dihydroxydiphenylalkane, and II. from 1 to 20 parts by weight of (C) a three-stage polymer produced by three, sequential, emulsion polymerization stages, wherein (1) in the first emulsion polymerization stage, a mixture of (a) styrene and (b) from zero to 10 percent by weight of a multifunctional bridge-forming monomer, is emulsion polymerized to obtain a first stage polymer, (2) in the second emulsion polymerization stage, a mixture of (a) said first stage polymer and (b) a first monomer component of (i) butadiene, and (ii) from 0 to 1 percent by weight of a multifunctional bridge-forming monomer, is emulsion polymerized to obtain a second stage polymer, and (3) in the third emulsion polymerization stage, a mixture of (a) said second stage polymer and (b) a second monomer component of (i) methyl methacrylate, and (ii) from 0 to 10 percent by weight of a multifunctional bridge-forming monomer, is emulsion polymerized.