Biomass-resource-derived polyurethane, method for producing same, and biomass-resource-derived polyester polyol

Patent metadata

Field	Value
Publication number	US-10351658-B2
Application number	US-201815936535-A
Country	US
Kind code	B2
Filing date	Mar 27, 2018
Priority date	Mar 31, 2010
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

The invention relates to a method for producing a biomass-resource-derived polyurethane, which comprises: reacting a dicarboxylic acid and an aliphatic diol to produce a polyester polyol; and reacting the polyester polyol and a polyisocyanate compound, wherein the dicarboxylic acid contains at least one component derived from biomass resources, a content of an organic acid in the dicarboxylic acid is more than 0 ppm and not more than 1,000 ppm relative to the dicarboxylic acid, and a pKa value of the organic acid at 25° C. is not more than 3.7.

First claim

The invention claimed is:

1. A biomass-resource-derived polyester polyol, comprising, in reacted form:
an organic acid having a pKa value at 25° C. of not more than 3.7;
a dicarboxylic acid unit; and
an aliphatic diol unit,
wherein the dicarboxylic acid unit comprises a dicarboxylic acid other than the organic acid, and wherein at least a portion of the dicarboxylic acid is derived from biomass resources,
wherein a content of the organic acid is more than 0% by mole and not more than 0.09% by mole relative to the dicarboxylic acid unit, and
wherein the biomass-resource-derived polyester polyol has a number average molecular weight of 500 to 4,500.

2. The biomass-resource-derived polyester polyol according to claim 1 , wherein the dicarboxylic acid derived from biomass resources comprises succinic acid.

3. The biomass-resource-derived polyester polyol according to claim 1 , wherein a content of the dicarboxylic acid unit derived from biomass resources is 20% by mole or more relative to whole dicarboxylic acid unit.

4. The biomass-resource-derived polyester polyol according to claim 2 , wherein a content of the dicarboxylic acid unit derived from biomass resources is 20% by mole or more relative to whole dicarboxylic acid unit.

5. The biomass-resource-derived polyester polyol according to claim 1 , wherein at least one component of the dicarboxylic acid derived from biomass resources comprises an aliphatic dicarboxylic acid.

6. The biomass-resource-derived polyester polyol according to claim 5 , wherein the dicarboxylic acid unit comprises 50% by mole or more of the aliphatic dicarboxylic acid.

7. The biomass-resource-derived polyester polyol according to claim 5 , wherein the aliphatic dicarboxylic acid comprises at least one selected from the group consisting of adipic acid, succinic acid, and sebacic acid.

8. The biomass-resource-derived polyester polyol according to claim 6 , wherein the aliphatic dicarboxylic acid comprises at least one selected from the group consisting of adipic acid, succinic acid, and sebacic acid.

9. The biomass-resource-derived polyester polyol according to claim 1 , wherein the biomass-resource-derived polyester polyol has a number average molecular weight of 500 to 4,000.

10. The biomass-resource-derived polyester polyol according to claim 1 , having a value expressed as a Hazen color number (APHA value: in conformity with JIS-K0101) of not more than 50.

Assignees

• Mitsubishi Chem Corp

Inventors

• Ohara Teruhiko
• Suzuki Naoki
• Nakajima Yasuko
• Itou Hiroto
• Aoshima Takayuki
• Sugai Naoki
• Matsumoto Takanao

Classifications

• C08G18/7657

  containing two or more aromatic rings · CPC title

• A43B13/04

  Plastics, rubber or vulcanised fibre · CPC title

• C07C69/66

  Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, [IMAGE cpc-sch-C07C-0958.gif] groups,[IMAGE cpc-sch-C07C-0959.gif] groups, or[IMAGE cpc-sch-C07C-0960.gif] in the acid moiety · CPC title

• C08G18/14

  Manufacture of cellular products · CPC title

• C08G63/16

  Dicarboxylic acids and dihydroxy compounds · CPC title