Molded article

Patent metadata

Field	Value
Publication number	US-11236198-B2
Application number	US-201916964015-A
Country	US
Kind code	B2
Filing date	Jan 22, 2019
Priority date	Jan 23, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

An automobile component including a molded article containing a copolymerized polyester resin synthesized from a hydroxycarboxylic acid monomer, a diol monomer, and a dicarboxylic acid/ester monomer and having a unit (A) of formula (1), a diol unit (B), and a unit (C) derived from a dicarboxylic acid or an ester-forming derivative of the dicarboxylic acid. A content of the unit (A) in the total units of the copolymerized polyester resin is 60 to 90 mol %, The formula (1) iswhere R1 is a hydrogen atom, CH3, or C2H5, R2 and R3 are each independently a hydrogen atom or CH3, and n is 0 or 1.

First claim

The invention claimed is:

1. An automobile component, comprising:
a molded article comprising a copolymerized polyester resin comprising a unit (A) of formula (1),

where R 1 is a hydrogen atom, CH 3 , or C 2 H 5 , R 2 and R 3 are each independently a hydrogen atom or CH 3 , and n is 1, a diol unit (B), and a unit (C) derived from a dicarboxylic acid or an ester-forming derivative of the dicarboxylic acid, wherein a content of the unit (A) based on total units of the copolymerized polyester resin is from 60 to 90 mol %.

2. The automobile component according to claim 1 , wherein R 1 , R 2 , and R 3 are hydrogen atoms.

3. The automobile component according to claim 1 , wherein the diol unit (B) is a unit derived from an aliphatic diol or a diol having a cardo structure.

4. The automobile component according to claim 1 , wherein the unit (C) is a unit derived from an aliphatic dicarboxylic acid or an ester-forming derivative of the aliphatic dicarboxylic acid or a unit derived from a dicarboxylic acid having a cardo structure or an ester-forming derivative of the dicarboxylic acid having the cardo structure.

5. The automobile component according to claim 1 , wherein the copolymerized polyester resin satisfies a glass transition temperature of 120° C. or higher, and the molded article satisfies a pencil hardness of F or higher.

6. The automobile component according to claim 2 , wherein the diol unit (B) is a unit derived from an aliphatic diol or a diol having a cardo structure.

7. The automobile component according to claim 2 , wherein the unit (C) is a unit derived from an aliphatic dicarboxylic acid or an ester-forming derivative of the aliphatic dicarboxylic acid or a unit derived from a dicarboxylic acid having a cardo structure or an ester-forming derivative of the dicarboxylic acid having the cardo structure.

8. The automobile component according to claim 2 , wherein the copolymerized polyester resin satisfies a glass transition temperature of 120° C. or higher, and the molded article satisfies a pencil hardness of F or higher.

9. The automobile component according to claim 3 , wherein the unit (C) is a unit derived from an aliphatic dicarboxylic acid or an ester-forming derivative of the aliphatic dicarboxylic acid or a unit derived from a dicarboxylic acid having a cardo structure or an ester-forming derivative of the dicarboxylic acid having the cardo structure.

10. The automobile component according to claim 3 , wherein the copolymerized polyester resin satisfies a glass transition temperature of 120° C. or higher, and the molded article satisfies a pencil hardness of F or higher.

11. The automobile component according to claim 4 , wherein the copolymerized polyester resin satisfies a glass transition temperature of 120° C. or higher, and the molded article satisfies a pencil hardness of F or higher.

12. The automobile component according to claim 6 , wherein the unit (C) is a unit derived from an aliphatic dicarboxylic acid or an ester-forming derivative of the aliphatic dicarboxylic acid or a unit derived from a dicarboxylic acid having a cardo structure or an ester-forming derivative of the dicarboxylic acid having the cardo structure.

13. The automobile component according to claim 1 , wherein the copolymerized polyester resin satisfies a glass transition temperature of 130° C. or higher, and the molded article satisfies a pencil hardness of F or higher.

14. The automobile component according to claim 2 , wherein the copolymerized polyester resin satisfies a glass transition temperature of 130° C. or higher, and the molded article satisfies a pencil hardness of F or higher.

15. The automobile component according to claim 3 , wherein the copolymerized polyester resin satisfies a glass transition temperature of 130° C. or higher, and the molded article satisfies a pencil hardness of F or higher.

16. The automobile component according to claim 1 , wherein the content of the unit (A) based on total units of the copolymerized polyester resin is from 60 to 85 mol %.

17. The automobile component according to claim 2 , wherein the content of the unit (A) based on total units of the copolymerized polyester resin is from 60 to 85 mol %.

18. The automobile component according to claim 3 , wherein the content of the unit (A) based on total units of the copolymerized polyester resin is from 60 to 85 mol %.

19. The automobile component according to claim 18 , wherein the content of the diol unit (B) based on total units of the copolymerized polyester resin is from 6 to 30 mol %, and the content of the unit (C) based on total units of the copolymerized polyester resin is from 6 to 30 mol %.

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• Honda Eiichi
• Yoshimura Yasuaki
• Noguchi Keita
• Satake Yuichiro

Classifications

• C08G63/60 Primary

  derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds · CPC title

• B29K2995/007

  Hardness · CPC title

• C08G63/123 Primary

  the acids or hydroxy compounds containing carbocyclic rings · CPC title

• B29K2067/00

  Use of polyesters {or derivatives thereof}, as moulding material · CPC title

• B29K2105/0085

  Copolymers · CPC title