Resin composition and resin molding

Patent metadata

Field	Value
Publication number	US-10308790-B2
Application number	US-201715641564-A
Country	US
Kind code	B2
Filing date	Jul 5, 2017
Priority date	Feb 13, 2017
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

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.

First claim

What is claimed is:

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.

2. 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.

3. The resin composition according to claim 1 , wherein the polyhydroxyalkanoate is a copolymer of 3-hydroxybutyrate and 3-hydroxyhexanoate.

4. 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 %.

5. The resin composition according to claim 1 , further comprising an adipic ester.

6. A resin molding that is molded from the resin composition according to claim 1 .

7. The resin molding according to claim 6 , that is a product of injection molding.

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.

9. 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.

10. The resin composition according to claim 9 , wherein the olefin-alkyl (meth)acrylate copolymer is an ethylene-alkyl (meth)acrylate copolymer.

11. 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.

12. 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.

13. 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.

14. 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.

15. The resin composition according to claim 8 , wherein the polyhydroxyalkanoate is a copolymer of 3-hydroxybutyrate and 3-hydroxyhexanoate.

16. 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 %.

17. The resin composition according to claim 8 , further comprising a plasticizer.

18. The resin composition according to claim 17 , wherein the plasticizer is an adipic ester.

19. A resin molding that is molded from the resin composition according to claim 8 .

20. The resin molding according to claim 19 , that is a product of injection molding.

Assignees

• Fuji Xerox Co Ltd

Inventors

• Yao Kenji

Classifications

• C08L2201/08

  Stabilised against heat, light or radiation or oxydation · CPC title

• C08L1/12 Primary

  Cellulose acetate · CPC title