Thickening agent for aqueous systems, formulations containing same and uses thereof

Patent metadata

Field	Value
Publication number	US-12043693-B2
Application number	US-202117304283-A
Country	US
Kind code	B2
Filing date	Jun 17, 2021
Priority date	Aug 5, 2015
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

The present invention relates to novel associative thickeners pertaining to the HEUR category (Hydrophobically-modified Ethoxylated URethane), to intermediate aqueous formulations containing such thickeners, and to the final compositions, for example paint, lacquer, varnish or paper coating slip compositions.

First claim

The invention claimed is:

1. A water-soluble thickening polyurethane, obtained by reacting a mixture comprising:
a poly(alkylene glycol) having a molecular mass in a range of from 2,000 to 20,000 g/mol;
a polyisocyanate; and
a polyethoxylated alcohol of formula (III):

wherein
p and q are integers at least one of which is non zero,
p+q=8 or 9, and
n is an integer or a decimal number in a range of from 25 to 40.

2. The polyurethane of claim 1 , obtained by condensing:
(a) at least one of the polyethoxylated alcohol of formula (III) in a range of from 1 to 29 wt. %;
(b) at least one of the poly(alkylene glycol) in a range of from 70 to 98 wt. %; and
(c) at least one of the polyisocyanate in a range of from 1 to 29 wt. %,
wherein a sum of mass percentages of (a), (b), and (c) is equal to 100%.

3. An aqueous formulation, comprising:
the water-soluble thickening polyurethane of claim 1 ; and
water.

4. The aqueous formulation of claim 3 , further comprising:
a surface-active agent.

5. The aqueous formulation of claim 3 , further comprising:
a biocide, a solvent, an anti-foaming agent, a pH regulator, a coalescent agent, and/or an encapsulating agent.

6. The aqueous formulation of claim 3 , consisting of:
(a) at least one of the water-soluble thickening polyurethane in a range of from 2 to 50 wt. %;
(b) at least one surface-active agent in a range of from 0.1 to 40 wt. %;
(c) the water in a range of from 10 to 93 wt. %; and
(d) at least one additive selected from the group consisting of a biocide, a solvent, an anti-foaming agent, a pH regulator, a coalescent agent, and an encapsulating agent, in a range of from 0 to 5 wt. %,
wherein a sum of mass percentages of (a), (b), (c), and (d) is equal to 100%.

7. A method for thickening an aqueous composition, the method comprising:
contacting the aqueous composition with the water-soluble thickening polyurethane of claim 1 ,
wherein the aqueous composition is a lacquer, a varnish, a paint, a putty, a thick coating, a waterproof coating, an ink, a slurry, a paper coating color, a cosmetic composition, or a detergent composition.

8. An aqueous composition, comprising:
the water-soluble thickening polyurethane of claim 1 as a levelling agent,
wherein the aqueous composition is a lacquer, a varnish, a paint, a putty, a thick coating, a waterproof coating, an ink, a slurry, a paper coating color, a cosmetic composition, or a detergent composition.

9. A method for thickening an aqueous composition, the method comprising:
contacting the aqueous composition with the aqueous formulation of claim 3 ,
wherein the aqueous composition is a lacquer, a varnish, a paint, a putty, a thick coating, a waterproof coating, an ink, a slurry, a paper coating color, a cosmetic composition, or a detergent composition.

10. An aqueous composition, comprising:
the aqueous formulation of claim 3 as a levelling agent,
wherein the aqueous composition is a lacquer, a varnish, a paint, a putty, a thick coating, a waterproof coating, an ink, a slurry, a paper coating color, a cosmetic composition, or a detergent composition.

11. The polyurethane of claim 1 , wherein, in the polyethoxylated alcohol of formula (III), wherein p and q sum to 8.

12. The polyurethane of claim 1 , wherein, in the polyethoxylated alcohol of formula (III), wherein p and q sum to 9.

13. The polyurethane of claim 1 , wherein, in the polyethoxylated alcohol of formula (III), wherein n is in a range of from more than 30 to 40.

14. The polyurethane of claim 11 , wherein, in the polyethoxylated alcohol of formula (III), wherein n is in a range of from more than 30 to 40.

15. The polyurethane of claim 12 , wherein, in the polyethoxylated alcohol of formula (III), wherein n is in a range of from 25 to 35.

16. The polyurethane of claim 11 , wherein, in the polyethoxylated alcohol of formula (III), wherein n is in a range of from 25 to 35.

17. The polyurethane of claim 1 , wherein, in the polyethoxylated alcohol of formula (III), wherein n is in a range of from 25 to 35.

18. The polyurethane of claim 1 , wherein, in the polyethoxylated alcohol of formula (III) wherein n is in a range of from 30 to 40.

19. The polyurethane of claim 11 , wherein, in the polyethoxylated alcohol of formula (III), wherein n is in a range of from 30 to 40.

20. The polyurethane of claim 1 , wherein, in the polyethoxylated alcohol of formula (III), wherein n is in a range of from more than 30 to 40.

Assignees

• Coatex Sas

Inventors

• Ruhlmann Denis
• Corfias Zuccalli Catherine
• Suau Jean-Marc
• Matter Yves
• Magny Benoit

Classifications

• C11D3/3726

  Polyurethanes · CPC title

• C08L2201/54

  Aqueous solutions or dispersions · CPC title

• C08L75/08

  from polyethers · CPC title

• C08G18/72

  Polyisocyanates or polyisothiocyanates · CPC title

• A61K2800/48

  Thickener, Thickening system · CPC title