Co-polymer polyol

Patent metadata

Field	Value
Publication number	US-10005875-B2
Application number	US-201415023795-A
Country	US
Kind code	B2
Filing date	Sep 10, 2014
Priority date	Sep 26, 2013
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

The present invention provides a co-polymer polyol which has an ABA block structure wherein each A block comprises a plurality of hydroxy-carboxylic acid residues and the B block comprises at least one dimer fatty residue selected from a dimer fatty diacid residue, a dimer fatty diol residue and a dimer fatty diamine residue, wherein the co-polymer polyol comprises at least two hydroxyl end groups. The invention also provides a method of making the co-polymer polyol and a polyurethane comprising the co-polymer polyol.

First claim

The invention claimed is:

1. A co-polymer polyol which has an ABA block structure wherein:
each A block comprises a plurality of hydroxy-carboxylic acid residues; and
the B block comprises:
at least one dimer fatty residue selected from a dimer fatty diacid residue, a dimer fatty diol residue and a dimer fatty diamine residue; and
one or more non-dimeric dicarboxylic acids;

wherein the co-polymer polyol comprises at least two hydroxyl end groups.

2. The co-polymer polyol as claimed in claim 1 wherein the hydroxy-carboxylic acid residues in each A block are derived from at least one lactone, wherein the at least one lactone comprises from 4 to 8 carbon atoms.

3. The co-polymer polyol as claimed in claim 1 wherein each A block does not comprise a dimer fatty residue.

4. The co-polymer polyol as claimed in claim 1 wherein each A block consists of hydroxy-carboxylic acid residues.

5. The co-polymer polyol as claimed in claim 2 wherein each A block is formed by ring-opening polymerisation of the at least one lactone on to the B block.

6. The co-polymer polyol as claimed in claim 1 wherein the B block further comprises a non-dimeric diol.

7. The co-polymer polyol as claimed in claim 1 wherein the B block comprises a non-dimeric dicarboxylic acid comprising from 6 to 12 carbon atoms.

8. The co-polymer polyol as claimed in claim 1 wherein the B block does not comprise a hydroxy-carboxylic acid residue.

9. The co-polymer polyol as claimed in claim 1 wherein the weight ratio of the weight of the B block to the total weight of the A blocks is from at least 0.75:1 to at most 1.25:1.

10. The co-polymer polyol as claimed in claim 1 which is obtained by forming each A block on the B block by a ring opening polymerisation reaction of at least one lactone on to the B block wherein the ring opening polymerisation reaction is performed at a temperature of up to 180° C. and wherein the temperature of the reaction is such that substantially no re-arrangement of the residues between the A block and the B block occurs.

11. A polyurethane comprising a co-polymer polyol as claimed in claim 1 .

12. The polyurethane as claimed in claim 11 wherein the A blocks and B block of the co-polymer polyol are phase separated in the formed polyurethane.

13. The polyurethane as claimed in claim 11 wherein the polyurethane is a polyurethane elastomer with a tensile strength at break of at least 200 N when measured according to ISO 527-2.

14. A method of making a co-polymer polyol as claimed in claim 1 comprising forming each A block on the B block by ring opening polymerisation of at least one lactone on to the B block.

15. The method as claimed in claim 14 wherein the ring opening polymerisation is carried out at a temperature of up to 180° C.

16. A method of making a polyurethane comprising reacting a co-polymer polyol as claimed in claim 1 with an isocyanate to form:
(a) the polyurethane; or
(b) an isocyanate-terminated pre-polymer which is then reacted with a chain extender to form the polyurethane.

17. An adhesive, coating, elastomer or foam comprising a co-polymer polyol as claimed in claim 1 .

Assignees

• Croda Int Plc

Inventors

• Smits Angela Leonarda Maria
• Triet Remco Benjamin Van
• Helm-Rademaker Karin Van Der
• Honcoop Wilhelmus Adrianus Jacobus

Classifications

• C08G63/553 Primary

  Acids or hydroxy compounds containing cycloaliphatic rings, e.g. Diels-Alder adducts · CPC title

• C08G18/4266

  prepared from hydroxycarboxylic acids and/or lactones · CPC title

• C08G18/36

  Hydroxylated esters of higher fatty acids · CPC title

• C09D175/06

  from polyesters · CPC title

• C08G18/4286 Primary

  prepared from a combination of hydroxycarboxylic acids and/or lactones with polycarboxylic acids or ester forming derivatives thereof and polyhydroxy compounds · CPC title