Dimer fatty acid-polyether-reaction product and coating composition comprising the reaction product

Patent metadata

Field	Value
Publication number	US-10501574-B2
Application number	US-201414913141-A
Country	US
Kind code	B2
Filing date	Jul 17, 2014
Priority date	Aug 27, 2013
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

A dimer fatty acid-polyether-reaction product prepared by reacting a composition containing at least 80 wt % of one or more dimer fatty acids with at least one polyether of application formula (I) in a molar ratio of 0.7/2.3 to 1.6/1.7. The reaction product has a number-average molecular weight of 4800 to 40000 g/mol and an acid number of less than 10 mg KOH/g.

First claim

The invention claimed is:

1. A dimer fatty acid-polyether-reaction product prepared by reacting:
(a) one or more dimer fatty acids with
(b) at least one polyether of formula (I):

where R is a C 3 to C 6 alkylene radical and n is selected such that the at least one polyether (b) possesses a number-average molecular weight of 2250 to 6000 g/mol,
wherein components (a) and (b) are reacted in a molar ratio of 0.7/2.3 to 1.6/1.7, and wherein the resulting reaction product consists of units of components (a) and (b) and possesses a number-average molecular weight of 4800 to 40000 g/mol and an acid number of less than 10 mg KOH/g.

2. The reaction product as claimed in claim 1 , wherein the at least one polyether (b) possesses a number-average molecular weight of 2400 to 5200 g/mol.

3. The reaction product as claimed in claim 1 , wherein the group R comprises isopropylene radicals or tetramethylene radicals and the at least one polyether (b) possesses a number-average molecular weight of 2500 to 4800 g/mol.

4. The reaction product as claimed in claim 1 , wherein components (a) and (b) are reacted in a molar ratio of 0.9/20.1 to 1.5/1.8.

5. The reaction product as claimed in claim 1 , which possesses a number-average molecular weight of 5000 to 30000 g/mol.

6. The reaction product as claimed in claim 1 , wherein the one or more dimer fatty acids contain a C 36 dimer fatty acid.

7. The reaction product as claimed in claim 3 , wherein the one or more dimer fatty acids is a C 36 dimer fatty acid.

8. The reaction product as claimed in claim 7 , wherein components (a) and (b) are reacted in a molar ratio of 0.9/20.1 to 1.5/1.8.

9. The reaction product as claimed in claim 1 , which possesses a number-average molecular weight of 5500 to 20000 g/mol and an acid number of less than 7.5 mg KOH/g.

10. The reaction product as claimed in claim 8 , which possesses a number-average molecular weight of 5500 to 20000 g/mol and an acid number of less than 7.5 mg KOH/g.

11. The reaction product as claimed in claim 1 , wherein:
the one or more dimer fatty acids is a C 36 dimer fatty acid;
the at least one polyether is polypropylene glycol or polytetrahydrofuran,
components (a) and (b) are reacted in a molar ratio of 0.9/20.1 to 1.5/1.8, and
the reaction product possesses a number-average molecular weight of 5500 to 20000 g/mol and an acid number of less than 7.5 mg KOH/g.

12. The reaction product as claimed in claim 1 , wherein radicals between carboxylic acid groups of the one or more dimer fatty acids contain 24 to 44 carbon atoms.

13. The reaction product as claimed in claim 2 , wherein radicals between carboxylic acid groups of the one or more dimer fatty acids contain 24 to 44 carbon atoms.

14. The reaction product as claimed in claim 3 , wherein radicals between carboxylic acid groups of the one or more dimer fatty acids contain 24 to 44 carbon atoms.

15. The reaction product as claimed in claim 4 , wherein radicals between carboxylic acid groups of the one or more dimer fatty acids contain 24 to 44 carbon atoms.

16. The reaction product as claimed in claim 5 , wherein radicals between carboxylic acid groups of the one or more dimer fatty acids contain 24 to 44 carbon atoms.

Assignees

• Basf Coatings Gmbh

Inventors

• Steinmetz Bernhard
• Hoffmann Peter
• Reuter Hardy

Classifications

• C08G65/3322

  acyclic · CPC title

• C09D171/02

  Polyalkylene oxides · CPC title

• C09D175/04 Primary

  Polyurethanes · CPC title

• C09D167/025

  containing polyether sequences · CPC title

• C08G63/676 Primary

  in which at least one of the two components contains aliphatic unsaturation · CPC title