# US 10,501,623 B2 · Polycarbonate resin composition and molded article using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,501,623 B2 - Document ID: US10501623B2 - Status: Granted - Kind: B2 - Application number: 15/856,110 - Filed: 2017-12-28 - Published: 2018-07-05 - Granted: 2019-12-10 - Earliest claimed: 2016-12-30 - Assignees: Lotte Advanced Materials Co., Ltd. - Applicants: Lotte Advanced Materials Co., Ltd. - Inventors: Mi Rae Jang; Jung Ki Kim; Yeong Deuk Seo; Sang Hyun Hong - Web page: https://patentgrep.com/patent/US10501623B2 ## CPC - C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates - C08L 2205/03: containing three or more polymers in a blend - C08L 2205/035: containing four or more polymers in a blend - C08L 2207/53: Core-shell polymer - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract Disclosed herein is a polycarbonate resin composition. The polycarbonate resin composition includes: (A) 100 parts by weight of a polycarbonate resin; (B) about 1 part by weight to about 5 parts by weight of a core-shell type impact modifier having an average particle diameter (D50) of about 70 nm to about 130 nm; and (C) about 0.1 parts by weight to about 1 parts by weight of an olefin-(meth) acrylate copolymer, wherein the core-shell type impact modifier (B) includes a unit derived from a C1 to C6 alkyl (meth)acrylate and has a unimodal particle size distribution. ## Claims ### Claim 1 A polycarbonate resin composition comprising: (A) 100 parts by weight of a polycarbonate resin; (B) about 1 part by weight to about 5 parts by weight of a core-shell type impact modifier having an average particle diameter (D50) of about 70 nm to about 130 nm; and (C) about 0.1 parts by weight to about 1 part by weight of an olefin-(meth) acrylate copolymer, wherein the core-shell type impact modifier (B) comprises a butadiene rubber core, comprises a unit derived from a C1 to C6 alkyl (meth)acrylate and has a unimodal particle size distribution. ### Claim 2 (depends on 1) The polycarbonate resin composition according to claim 1, wherein the polycarbonate resin (A) has a melt-flow index of about 5 g/10 min to about 50 g/10 min. measured at 250° C. under a load of 10 kg in accordance with ISO 1133. ### Claim 3 (depends on 1) The polycarbonate resin composition according to claim 1, wherein the core-shell type impact modifier (B) comprises a shell comprising a copolymer of a C1 to C6 alkyl (meth)acrylate and an aromatic vinyl monomer. ### Claim 4 (depends on 1) The polycarbonate resin composition according to claim 1, wherein the core-shell type impact modifier (B) has D10, D50, and D90 values on a particle size distribution curve satisfying Equations 2 to 4, respectively: 40 nm≤D10≤50 nm [Equation 2] 70 nm≤D50≤130 nm [Equation 3] 150 nm≤D90≤160 nm. [Equation 4] ### Claim 5 (depends on 1) The polycarbonate resin composition according to claim 1, wherein the olefin-(meth)acrylate copolymer (C) has a linear structure and a melt-flow index of about 1 g/10 min to about 5 g/10 min. measured at 190° C. under a load of 2.16 kg in accordance with ASTM D1238. ### Claim 6 (depends on 1) The polycarbonate resin composition according to claim 1, wherein the olefin-(meth) acrylate copolymer (C) comprises about 25 wt % to about 45 wt % of the unit derived from the C1 to C6 alkyl (meth)acrylate. ### Claim 7 (depends on 1) The polycarbonate resin composition according to claim 1, wherein a weight ratio of the core-shell type impact modifier (B) to the olefin-(meth) acrylate copolymer (C) ranges from about 2:1 to about 6:1. ### Claim 8 (depends on 1) The polycarbonate resin composition according to claim 1, wherein the polycarbonate resin composition satisfies Equation 1: 50 cm≤I≤100 cm where I indicates a height from which dropping a weight results in breakage of a 55 mm×100 mm×3 mm specimen in a DuPont drop impact test, the specimen being prepared by dipping in a solvent for painting for 2 minutes and drying at 70° C. for 20 minutes, followed by aging at room temperature for 24 hours. ### Claim 9 (depends on 1) The polycarbonate resin composition according to claim 1, further comprising: at least one additive comprising an antimicrobial agent, a heat stabilizer, an antioxidant, a release agent, a light stabilizer, an inorganic additive, a surfactant, a coupling agent, a plasticizer, a compatibilizer, a lubricant, an antistatic agent, a colorant, a pigment, a dye, a flame retardant, a flame retardant aid, an anti-dripping agent, a UV absorber, and/or a UV blocking agent. ### Claim 10 (depends on 1) A molded article formed of the polycarbonate resin composition according to claim 1. ### Claim 11 A polycarbonate resin composition comprising: (A) 100 parts by weight of a polycarbonate resin; (B) about 1 part by weight to about 5 parts by weight of a core-shell type impact modifier having an average particle diameter (D50) of about 70 nm to about 130 nm; and (C) about 0.1 parts by weight to about 1 part by weight of an olefin-(meth) acrylate copolymer, wherein the core-shell type impact modifier (B) comprises a unit derived from a C1 to C6 alkyl (meth)acrylate and has a unimodal particle size distribution, and wherein the core-shell type impact modifier (B) has D10, D50, and D90 values on a particle size distribution curve satisfying Equations 2 to 4, respectively: 40 nm≤D10≤50 nm [Equation 2] 70 nm≤D50≤130 nm [Equation 3] 150 nm≤D90≤160 nm. [Equation 4] ### Claim 12 (depends on 11) The polycarbonate resin composition according to claim 11, wherein the polycarbonate resin (A) has a melt-flow index of about 5 g/10 min to about 50 g/10 min, as measured at 250° C. under a load of 10 kg in accordance with ISO 1133. ### Claim 13 (depends on 11) The polycarbonate resin composition according to claim 11, wherein the olefin-(meth)acrylate copolymer (C) has a linear structure and a melt-flow index of about 1 g/10 min to about 5 g/10 min, as measured at 190° C. under a load of 2.16 kg according to ASTM D1238. ### Claim 14 (depends on 11) The polycarbonate resin composition according to claim 11, wherein the olefin-(meth) acrylate copolymer (C) comprises about 25 wt % to about 45 wt % of the unit derived from the C1 to C6 alkyl (meth)acrylate. ### Claim 15 (depends on 11) The polycarbonate resin composition according to claim 11, wherein a weight ratio of the core-shell type impact modifier (B) to the olefin-(meth) acrylate copolymer (C) ranges from about 2:1 to about 6:1. ### Claim 16 (depends on 11) The polycarbonate resin composition according to claim 11, wherein the polycarbonate resin composition satisfies Equation 1: 50 cm≤I≤100 cm where I indicates a height from which dropping a weight results in breakage of a 55 mm×100 mm×3 mm specimen in a DuPont drop impact test, the specimen being prepared by dipping in a solvent for painting for 2 minutes and drying at 70° C. for 20 minutes, followed by aging at room temperature for 24 hours. ### Claim 17 (depends on 11) The polycarbonate resin composition according to claim 11, further comprising: at least one additive comprising an antimicrobial agent, a heat stabilizer, an antioxidant, a release agent, a light stabilizer, an inorganic additive, a surfactant, a coupling agent, a plasticizer, a compatibilizer, a lubricant, an antistatic agent, a colorant, a pigment, a dye, a flame retardant, a flame retardant aid, an anti-dripping agent, a UV absorber, and/or a UV blocking agent. ### Claim 18 (depends on 11) A molded article formed of the polycarbonate resin composition according to claim 11.