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

Patent metadata

Field	Value
Publication number	US-11066505-B2
Application number	US-201615747014-A
Country	US
Kind code	B2
Filing date	Aug 3, 2016
Priority date	Aug 5, 2015
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

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:
at least one polyethoxylated alcohol of formula

wherein:
p and q are integers at least one of which is non zero,
p+q=9 and
n is an integer or a decimal number of 25 to 40,
a) at least one poly(alkylene glycol) having a molecular mass of from 2,000 g/mol to 20,000 g/mol and
b) at least one polyisocyanate.

2. The water-soluble thickening polyurethane according to claim 1 , obtained by the condensation of:
a) from 1% to 29% by weight of the at least one polyethoxylated alcohol of formula (III),
b) from 70% to 98% by weight of the at least one poly(alkylene glycol) and
c) from 1% to 29% by weight of the at least one polyisocyanate,
wherein a sum of mass percentages of a), b) and c) is equal to 100%.

3. 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 selected from the group consisting of 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, and a detergent composition.

4. An aqueous composition, comprising: the water-soluble thickening polyurethane of claim 1
as a levelling agent,
wherein the aqueous composition is selected from the group consisting of 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, and a detergent composition.

5. An aqueous formulation comprising:
the water-soluble thickening polyurethane according to claim 1 , and
water.

6. The aqueous formulation according to claim 5 , further comprising:
a surface-active agent.

7. The aqueous formulation according to claim 5 , further comprising:
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.

8. The aqueous formulation according to claim 5 , consisting of:
1) from 2% to 50% by weight of the at least one water-soluble thickening polyurethane,
2) from 0.1% to 40% by weight of at least one surface-active agent,
3) from 10% to 93% by weight of water and
4) from 0% to 5% by weight of 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,
wherein a sum of mass percentages of 1), 2), 3) and 4) is equal to 100%.

9. A method for thickening an aqueous composition, the method comprising:
contacting the aqueous composition with the aqueous formulation of claim 5 ,
wherein the aqueous composition is selected from the group consisting of 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, and a detergent composition.

10. An aqueous composition, comprising:
the aqueous formulation of claim 5 as a levelling agent,
wherein the aqueous composition is selected from the group consisting of 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, and a detergent composition.

Assignees

• Coatex Sas

Inventors

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

Classifications

• C08G18/755

  and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate · CPC title

• C09D7/43

  Thickening agents · CPC title

• C08G18/283 Primary

  Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds · CPC title

• C09D7/47

  Levelling agents · CPC title

• C08L75/08

  from polyethers · CPC title