Polycarbonate resin composition and molded body thereof

Patent metadata

Field	Value
Publication number	US-10703902-B2
Application number	US-201815935382-A
Country	US
Kind code	B2
Filing date	Mar 26, 2018
Priority date	Sep 29, 2015
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

The present invention aims to provide a polycarbonate resin composition having impact resistance at high levels in good balance, a production method thereof, and a molded body of the polycarbonate resin composition. The present invention relates to a polycarbonate resin composition containing a polycarbonate resin (A) having a constitution unit derived from a compound represented by formula (1) and polyrotaxane (B), a production method thereof, and a molded body of the resin composition:

First claim

The invention claimed is:

1. A polycarbonate resin composition comprising:
a polycarbonate resin (A) having a constitution unit derived from a compound represented by at least the following formula (1)

and
a polyrotaxane (B).

2. The polycarbonate resin composition according to claim 1 , wherein in the constitution unit of the polycarbonate resin (A), a proportion of the constitution unit derived from the compound represented by the formula (1) exceeds 30 mol % per 100 mol % of constitution units derived from all dihydroxy compounds.

3. The polycarbonate resin composition according to claim 1 , comprising 0.1 part by weight or more and less than 20 parts by weight of the polyrotaxane (B) per 100 parts by weight of a total amount of the polycarbonate resin (A) and the polyrotaxane (B).

4. The polycarbonate resin composition according to claim 1 , wherein the polyrotaxane (B) comprises polyethylene glycol and a cyclodextrin molecule.

5. The polycarbonate resin composition according to claim 1 , further comprising at least a pound (C) selected from a compound of Group 1 metal in a long-period periodic table and a compound of Group 2 metal in a long-period periodic table.

6. The polycarbonate resin composition according to claim 5 , wherein a content of the compound (C) is 0.5 ppm by weight or more and 1000 ppm by weight or less in a metal amount in the compound (C) per 100 parts by weight of a total amount of the polycarbonate resin (A) and the polyrotaxane (B) in the polycarbonate resin composition.

7. The polycarbonate resin composition according to claim 5 , wherein the compound (C) is at least one selected from the group consisting of an inorganic salt (including carbonate), a carboxylate, a phenolate, a halogen compound, and a hydroxide.

8. The polycarbonate resin composition according to claim 5 , wherein the compound (C) is at least one selected from the group consisting of a sodium compound, a potassium compound, a magnesium compound, a calcium compound, and a cesium compound.

9. A molded body obtained by molding the polycarbonate resin composition according to claim 1 .

10. The polycarbonate resin composition according to claim 1 , wherein in the constitution unit of the polycarbonate resin (A), a proportion of the constitution unit derived from the compound represented by the formula (1) is 65-85 mol % per 100 mol % of constitution units derived from all dihydroxy compounds.

11. The polycarbonate resin composition according to claim 10 , wherein the compound represented by formula (1) is isosorbide and wherein the polyrotaxane (B) comprises polyethylene glycol and a cyclodextrin molecule.

12. The polycarbonate resin composition according to claim 11 , further comprising at least one compound (C) selected from a compound of Group 1 metal in a long-period periodic table and a compound of Group 2 metal in a long-period periodic table.

13. The polycarbonate resin composition according to claim 1 , wherein a glass transition temperature of the polycarbonate resin composition is 110° C. or higher and 190° C. or lower.

14. The polycarbonate resin composition according to claim 1 , wherein an amount of the polyrotaxane (B) in the polycarbonate resin composition is 0.1 parts by weight or larger and smaller than 20 parts by weight per 100 parts by weight of the total amount of the polycarbonate resin (A) and the polyrotaxane (B).

15. The polycarbonate resin composition according to claim 11 , wherein an amount of the polyrotaxane (B) in the polycarbonate resin composition is 0.1 parts by weight or larger and smaller than 20 parts by weight per 100 parts by weight of the total amount of the polycarbonate resin (A) and the polyrotaxane (B).

16. The polycarbonate resin composition according to claim 12 , wherein an amount of the polyrotaxane (B) in the polycarbonate resin composition is 0.1 parts by weight or larger and smaller than 20 parts by weight per 100 parts by weight of the total amount of the polycarbonate resin (A) and the polyrotaxane (B).

Assignees

• Mitsubishi Chem Corp

Inventors

• Ando Masato
• Tanaka Tomohiko

Classifications

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08G83/007

  Polyrotaxanes; Polycatenanes · CPC title

• C08L2201/08

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

• C08G64/02

  Aliphatic polycarbonates · CPC title

• C08L71/02

  Polyalkylene oxides · CPC title