Highly durable polyester polyol

Patent metadata

Field	Value
Publication number	US-9902683-B2
Application number	US-201515301184-A
Country	US
Kind code	B2
Filing date	Mar 27, 2015
Priority date	Mar 31, 2014
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A polyester polyol from which a polyurethane having acid resistance and alkali resistance can be produced. A polyester polyol containing 1,3-propandiol having an alicyclic skeleton in a side chain, 3-methyl-1,5-pantanediol, and a dibasic acid component as constituent components.

First claim

The invention claimed is:

1. A polyester polyol, comprising:
1,3-propanediol having an alicyclic skeleton in a side chain, wherein the 1,3-propanediol having an alicyclic skeleton in a side chain is selected from the group consisting of cyclopropane-1,1-dimethanol, cyclobutane-1,1-dimethanol, cyclopentane-1,1-dimethanol, cyclohexane-1,1-dimethanol, 1-cyclohexene-4,4-dimethanol, cycloheptane-1,1-dimethanol, cyclooctane-1,1-dimethanol, and dimethylcyclooctane-1,1-dimethanol;
3-methyl-1,5-pentanediol; and
a dibasic acid component,
as constituent components.

2. The polyester polyol according to claim 1 , wherein a ratio of an amount of the 1,3-propanediol having an alicyclic skeleton in a side chain to the 3-methyl-1,5-pentanediol is from 1/99 to 99/1 by molar ratio.

3. The polyester polyol according to claim 1 , wherein the 1,3-propanediol having an alicyclic skeleton in a side chain is cyclohexane-1,1-dimethanol.

4. A method for producing a polyurethane, comprising reacting the polyester polyol according to claim 1 and a polyisocyanate.

5. A polyurethane obtained by the production method according to claim 4 .

6. The polyester polyol according to claim 2 , wherein the 1,3-propanediol having an alicyclic skeleton in a side chain is cyclohexane-1,1-dimethanol.

7. A method for producing a polyurethane, comprising reacting the polyester polyol according to claim 2 and a polyisocyanate.

8. A polyurethane obtained by the production method according to claim 7 .

9. A method for producing a polyurethane, comprising reacting the polyester polyol according to claim 3 and a polyisocyanate.

10. A polyurethane obtained by the production method according to claim 9 .

11. The polyester polyol according to claim 1 , further comprising a polyhydric alcohol component which is a diol,
wherein a ratio of a total amount of the 1,3-propanediol having an alicyclic skeleton in a side chain, 3-methyl-1,5-pentanediol, and the polyhydric alcohol component to the amount of the dibasic acid component [(the number of constituent units derived from the 1,3-propanediol having an alicyclic skeleton in a side chain)+(the number of constituent units derived from 3-methyl-1,5-pentanediol)+(the number of constituent units derived from the other polyhydric alcohol component)]:(the number of constituent units derived from the dibasic acid component) is in the range of 1.4:1 to 1.01:1.

12. The polyester polyol according to claim 1 , wherein the dibasic acid component is selected from the group consisting of adipic acid, azelaic acid, sebacic acid, terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid, and dialkyl esters thereof.

Assignees

• Kuraray Co

Inventors

• Tsuruta Takuo
• Okano Shigeru

Classifications

• C07C69/013 Primary

  Esters of alcohols having the esterified hydroxy group bound to a carbon atom of a ring other than a six-membered aromatic ring · CPC title

• C08G18/664

  with compounds of group C08G18/3203 · CPC title

• C08G18/4238

  derived from dicarboxylic acids and dialcohols · CPC title

• C08G18/423

  containing cycloaliphatic groups · CPC title

• C08G18/7671

  containing only one alkylene bisphenyl group · CPC title