Polyester polyol, polyurethane resin, and production processes therefor

Patent metadata

Field	Value
Publication number	US-10351657-B2
Application number	US-201715784973-A
Country	US
Kind code	B2
Filing date	Oct 16, 2017
Priority date	Dec 24, 2015
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

The present invention aims to provide a polyester polyol having favorable reactivity and a favorable color tone, which can be used for obtaining a polyurethane having an excellent balance of flexibility, mechanical strength, and chemical resistance, and a method for producing the polyester polyol. The object can be achieved with a polyester polyol in which an aliphatic diol contains as a structural unit 1,10-decanediol derived from a biomass resource, and in which the aldehyde body content in the polyester polyol is 0.01 to 0.5% by weight, and a method for producing the polyester polyol.

First claim

The invention claimed is:

1. A polyester polyol comprising a structural unit derived from a dicarboxylic acid and a structural unit derived from an aliphatic diol, wherein
a structural unit derived from 1,10-decanediol is contained as said aliphatic diol unit;
said polyester polyol has a number average molecular weight of 250 to 5000; and
said polyester polyol contains 0.01 to 0.5% by weight aldehyde body with respect to the total weight of the polyester polyol.

2. The polyester polyol according to claim 1 , wherein said dicarboxylic acid contains a dicarboxylic acid derived from a biomass resource.

3. The polyester polyol according to claim 2 , wherein said dicarboxylic acid contains succinic acid derived from a biomass resource.

4. A polyurethane resin obtained by reacting the polyester polyol according to claim 1 with one or more polyisocyanate compounds and a chain extender.

5. A method for producing a polyurethane resin, comprising a step of reacting the polyester polyol according to claim 1 with one or more polyisocyanate compounds.

6. A method for producing the polyester polyol according to claim 1 , comprising a step of polycondensing at least a dicarboxylic acid and an aliphatic diol, wherein said aliphatic diol contains 1,10-decanediol; and the aldehyde body content in said polyester polyol is 0.01 to 0.5% by weight with respect to the total weight of the polyester polyol.

7. A synthetic leather or an artificial leather comprising the polyurethane resin according to claim 4 .

8. An automotive part comprising the polyurethane resin according to claim 4 .

9. A shoe sole comprising the polyurethane resin according to claim 4 .

10. A footwear comprising the shoe sole according to claim 9 .

11. A film comprising the polyurethane resin according to claim 4 .

12. A sporting good comprising the polyurethane resin according to claim 4 .

13. A paint comprising the polyurethane resin according to claim 4 .

14. An adhesive comprising the polyurethane resin according to claim 4 .

15. A foam comprising the polyurethane resin according to claim 4 .

16. An elastomer comprising the polyurethane resin according to claim 4 .

17. The elastomer according to claim 16 , wherein the elastomer is thermoplastic elastomer.

18. A coating agent comprising the polyurethane resin according to claim 4 .

Assignees

• Mitsubishi Chem Corp

Inventors

• Kanamori Yoshikazu
• Nitta Shigeki
• Yano Kaori
• Aoshima Takayuki
• Hioki Yuta

Classifications

• C08G63/16

  Dicarboxylic acids and dihydroxy compounds · CPC title

• C08G18/14

  Manufacture of cellular products · CPC title

• C08G18/4238 Primary

  derived from dicarboxylic acids and dialcohols · CPC title

• C08G63/78

  Preparation processes · CPC title

• C08G18/246

  containing also tin-carbon bonds · CPC title