# US 10,308,790 B2 · Resin composition and resin molding > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,308,790 B2 - Document ID: US10308790B2 - Status: Granted - Kind: B2 - Application number: 15/641,564 - Filed: 2017-07-05 - Published: 2018-08-16 - Granted: 2019-06-04 - Earliest claimed: 2017-02-13 - Assignees: Fuji Xerox Co., Ltd. - Applicants: Fuji Xerox Co., Ltd. - Inventors: Kenji Yao - Web page: https://patentgrep.com/patent/US10308790B2 ## CPC - C08L 1/12: Cellulose acetate - C08L 2201/08: Stabilised against heat, light or radiation or oxydation - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract A resin composition includes: a cellulose acetate having a weight-average molecular weight of 30,000 to 90,000 and a substitution degree of 2.1 to 2.6; and a polyhydroxyalkanoate. ## Claims ### Claim 1 A resin composition, comprising: a cellulose acetate having a weight-average molecular weight of 30,000 to 90,000 and a substitution degree of 2.1 to 2.6; and a polyhydroxyalkanoate. ### Claim 2 (depends on 1) The resin composition according to claim 1, wherein when (A) represents a percentage by mass of cellulose acetate content on the whole quantity of the resin composition and (B) represents a percentage by mass of polyhydroxyalkanoate content on the whole quantity of the resin composition, a mass ratio (B)/(A) is from 0.005 to 0.1. ### Claim 3 (depends on 1) The resin composition according to claim 1, wherein the polyhydroxyalkanoate is a copolymer of 3-hydroxybutyrate and 3-hydroxyhexanoate. ### Claim 4 (depends on 3) The resin composition according to claim 3, wherein a composition ratio of the 3-hydroxyhexanoate to the copolymer of the 3-hydroxybutyrate and the 3-hydroxyhexanoate is from 3 mole % to 20 mole %. ### Claim 5 (depends on 1) The resin composition according to claim 1, further comprising an adipic ester. ### Claim 6 (depends on 1) A resin molding that is molded from the resin composition according to claim 1. ### Claim 7 (depends on 6) The resin molding according to claim 6, that is a product of injection molding. ### Claim 8 A resin composition, comprising: a cellulose acetate having a weight-average molecular weight of 30,000 to 90,000 and a substitution degree of 2.1 to 2.6; a polyhydroxyalkanoates; and at least one copolymer having olefin structural units and alkyl (meth)acrylate structural units, the copolymer being selected from the group consisting of olefin-alkyl (meth)acrylate copolymers and olefin-(meth)acrylate-(unsaturated 1,2-dicarboxylic anhydride) copolymers. ### Claim 9 (depends on 8) The resin composition according to claim 8, wherein the copolymer having olefin structural units and alkyl (meth)acrylate structural units is an olefin-alkyl (meth)acrylate copolymer. ### Claim 10 (depends on 9) The resin composition according to claim 9, wherein the olefin-alkyl (meth)acrylate copolymer is an ethylene-alkyl (meth)acrylate copolymer. ### Claim 11 (depends on 8) The resin composition according to claim 8, wherein the copolymer having olefin structural units and alkyl (meth)acrylate structural units is an olefin-(meth)acrylate-(unsaturated 1,2-dicarboxylic anhydride) copolymer. ### Claim 12 (depends on 11) The resin composition according to claim 11, wherein the olefin-(meth)acrylate-(unsaturated 1,2-dicarboxylic anhydride) copolymer is an ethylene-(meth)acrylate-maleic anhydride copolymer. ### Claim 13 (depends on 8) The resin composition according to claim 8, wherein when (A) represents a percentage by mass of cellulose acetate content on the whole quantity of the resin composition and (B) represents a percentage by mass of polyhydroxyalkanoate content on the whole quantity of the resin composition, a mass ratio (B)/(A) is from 0.005 to 0.1. ### Claim 14 (depends on 8) The resin composition according to claim 8, wherein when (A) represents a percentage by mass of cellulose acetate content on the whole quantity of the resin composition and (C) represents a percentage by mass of total content of copolymers each having olefin structural units and alkyl (meth)acrylate structural units on the whole quantity of the resin composition, a mass ratio (C)/(A) is from 0.005 to 0.1. ### Claim 15 (depends on 8) The resin composition according to claim 8, wherein the polyhydroxyalkanoate is a copolymer of 3-hydroxybutyrate and 3-hydroxyhexanoate. ### Claim 16 (depends on 15) The resin composition according to claim 15, wherein a composition ratio of the 3-hydroxyhexanoate to the copolymer of the 3-hydroxybutyrate and the 3-hydroxyhexanoate is from 3 mole % to 20 mole %. ### Claim 17 (depends on 8) The resin composition according to claim 8, further comprising a plasticizer. ### Claim 18 (depends on 17) The resin composition according to claim 17, wherein the plasticizer is an adipic ester. ### Claim 19 (depends on 8) A resin molding that is molded from the resin composition according to claim 8. ### Claim 20 (depends on 19) The resin molding according to claim 19, that is a product of injection molding.