# US 2013/0158183 A1 · Impact modified polycarbonate compositions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0158183 A1 - Document ID: US20130158183A1 - Status: Published application - Kind: A1 - Application number: 13/527,980 - Filed: 2012-06-20 - Published: 2013-06-20 - Earliest claimed: 2011-06-20 - Assignees: Styrolution (Jersey) Limited - Inventors: GISBERT MICHELS; Edgar Leltz; Frank Eisenträger - Web page: https://patentgrep.com/patent/US20130158183A1 ## CPC - C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates - C08L 55/02: ABS [Acrylonitrile-Butadiene-Styrene] polymers - C08L 25/08: Copolymers of styrene (C08L29/08, C08L35/06, C08L55/02 take precedence) - C08L 25/12: with unsaturated nitriles - C08L 51/04: grafted on to rubbers - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract The invention relates to thermoplastic polycarbonate compositions which are impact-modified with ABS type polymers, said polycarbonate compositions being impact-modified with ABS type polymers are characterized by their excellent low temperature ductility, good processing properties expressed by relatively high melt volume rate (MVR) and good hydrolytic stability. ## Claims ### Claim 1 Resin composition comprising: A) 5 to 99 wt.-parts of at least one aromatic polycarbonate, B) 1 to 95 wt.-parts of at least one graft rubber copolymer which is obtained by: emulsion polymerization of styrene and acrylonitrile in the weight ratio 95:5 to 50:50, whereby styrene and/or acrylonitrile wholly or partially can be replaced by copolymerizable monomers, onto at least two rubber latices, comprising: a butadiene rubber latex (B1) having a weight median particle diameter D50 of 100 to 250 nm, and a gel content from 30 to 80% by weight, and a butadiene rubber latex (B2) having a weight median particle diameter D50 of more than 350 nm, and a gel content of less than 75% by weight, C) optionally 0 to 50 wt.-parts of one or more (co)polymer of at least one monomer selected from the group consisting of vinyl aromatic monomers, vinyl cyanides and unsaturated carboxylic acids and derivatives thereof, D) optionally 0 to 25 wt.-parts of conventional polymer additives, wherein the weight median particle diameter D50 of the mixture of the butadiene rubber latices (B1) and (B2) is larger than 350 nm and is less than 1000 nm, and the amount of the butadiene rubber latex polymer (B1) in the graft rubber copolymer B) is 1 to 49% by weight (B1) and the amount of the butadiene rubber latex polymer (B2) is 51 to 99% by weight, based on the total weight of the rubber latex polymers in the graft rubber copolymer B). ### Claim 2 (depends on 1) Resin composition according to claim 1, wherein the rubber latices of graft rubber copolymer B) consist of butadiene rubber latex polymer (B1) and butadiene rubber latex polymer (B2). ### Claim 3 (depends on 1) Resin composition according to claim 1, wherein the butadiene rubber latex polymer (B1) has a weight median particle diameter D50 of 150 to 220 nm and/or has a gel content from 60 to 80% by weight. ### Claim 4 (depends on 1) Resin composition according to claim 1, wherein the butadiene rubber latex polymer (B2) has a weight median particle diameter D50 of 360 to 450 nm, and/or has a gel content of less than 70% by weight. ### Claim 5 (depends on 1) Resin composition according to claim 1, wherein the graft rubber copolymer B) is obtained by common grafting onto a mixture of the at least two rubber lattices, comprising said a butadiene rubber latex (B1) and (B2). ### Claim 6 (depends on 1) Resin composition according to claim 1, wherein the graft rubber copolymer B) is obtained by grafting of styrene and acrylonitrile onto the butadiene rubber lattices, preferably by grafting of 60 to 90% by weight styrene and and 10 to 40% by weight acrylonitrile onto the butadiene rubber latices, and the weight percentages relate to the total weight of styrene and acrylonitrile. ### Claim 7 (depends on 1) Resin composition according to claim 1, wherein the graft rubber copolymer B) is obtained by grafting of 30 to 50 parts by weight styrene and acrylonitrile onto 50 to 70 parts by weight of the butadiene rubber latices. ### Claim 8 (depends on 1) Resin composition according to claim 1, wherein the aromatic polycarbonate is a polycarbonate based on bisphenol A and phosgene. ### Claim 9 (depends on 1) Resin composition according to claim 1, which comprises at least one said (co)polymer C). ### Claim 10 (depends on 1) Resin composition according to claim 1, which comprises at least one said (co)polymer C) which is a copolymer of styrene and acrylonitrile. ### Claim 11 (depends on 1) Resin composition according to claim 1, wherein the conventional polymer additive (component D) is selected from the group of stabilizers, flame retarding agents, flameproofing synergists, antidripping agents, lubricants and mold release agents, nucleating agents, antistatics, fillers and reinforcing substances, dyestuffs and pigments. ### Claim 12 (depends on 1) Resin composition according to claim 1, comprises comprising A) 30 to 80 wt.-% of said at least one aromatic polycarbonate, B) 5 to 30 wt.-% of said at least one graft rubber copolymer, and C) 10 to 40 wt.-% of said one or more (co)polymer, and optionally 0 to 25 wt.-% of said conventional polymer additives D), the weight-percentages being based on the total weight of the resin composition. ### Claim 13 (depends on 1) Process for the manufacture of the resin composition according to claim 1, comprising the steps of: a) preparing at least one graft rubber copolymer B) by emulsion polymerization of styrene and acrylonitrile in the weight ratio 95:5 to 50:50, whereby styrene and/or acrylonitrile wholly or partially can be replaced by copolymerizable monomers, onto at least two rubber latices, comprising: a butadiene rubber latex (B1) having a weight median particle diameter D50 of 100 to 250 nm, and a gel content from 30 to 80% by weight, and a butadiene rubber latex (B2) having a weight median particle diameter D50 of more than 350 nm, and a gel content of less than 75 ° AD by weight, and b) admixing the graft rubber copolymer B) obtained in step a) with at least one aromatic polycarbonate A) and optionally 0 to 50 wt.-parts of one or more (co)polymer of at least one monomer selected from the group consisting of vinyl aromatic monomers, vinyl cyanides and unsaturated carboxylic acids and derivatives thereof, optionally 0 to 25 wt.-parts of conventional polymer additives. ### Claim 14 (depends on 1) Use of the resin composition according to claim 1 for the manufacture of shaped or moulded articles. ### Claim 15 (depends on 1) Shaped or moulded articles, comprising the resin composition according to claim 1. ### Claim 16 (depends on 2) Resin composition according to claim 2, wherein the butadiene rubber latex polymer (B1) has a weight median particle diameter D50 of 150 to 220 nm and/or has a gel content from 60 to 80% by weight. ### Claim 17 (depends on 16) Resin composition according to claim 16, wherein the butadiene rubber latex polymer (B2) has a weight median particle diameter D50 of 360 to 450 nm, and/or has a gel content of less than 70% by weight. ### Claim 18 (depends on 3) Resin composition according to claim 3, wherein the butadiene rubber latex polymer (B2) has a weight median particle diameter D50 of 360 to 450 nm, and/or has a gel content of less than 70% by weight. ### Claim 19 (depends on 2) Resin composition according to claim 2, wherein the butadiene rubber latex polymer (B2) has a weight median particle diameter D50 of 360 to 450 nm, and/or has a gel content of less than 70% by weight. ### Claim 20 (depends on 17) Resin composition according to claim 17, wherein the graft rubber copolymer B) is obtained by common grafting onto a mixture of the at least two rubber lattices, comprising said a butadiene rubber latex (B1) and (B2).