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US 2013/0116368 A1Published application
Emulsion of an associative acrylic polymer polymerised in the presence of polyglycerols and its use as a thickening agent in an aqueous formulation
AssigneeCoatex
InventorsJean-Marc Suau, Denis Ruhlmann
Life of this patent
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Abstract
Emulsions containing acrylic associative thickening agents which, when polymerized in the presence of particular polyglycerols, have a thickening power which is remarkably stable over time.
Claims18
An aqueous emulsion of an associative thickening agent comprising water and an associative thickening agent obtained by polymerization:
- a) of at least one monomer which is (meth)acrylic acid,
- b) of at least one monomer which is an ester of (meth)acrylic acid,
- c) of at least one monomer having at least one hydrophobic group,
- in the presence of d) at least one polyglycerol of formula (I):
- where R designates hydrogen, an ester group functionalized by an alkyl group, having 8 to 22 carbon atoms, or an alkyl group having 8 to 22 carbon atoms.
2 more elements
The process according to claim 15, wherein the material is a water-based paint, an adhesive, a thick film coating or a filler.
An associative thickening agent obtained by polymerization:
- a) of at least one monomer which is (meth)acrylic acid,
- b) of at least one monomer which is an ester of (meth)acrylic acid, and
- c) of at least one monomer having at least one hydrophobic group,
- in the presence of d) at least one polyglycerol of formula (I):
- where R designates hydrogen, an ester group functionalized by an alkyl group, having 8 to 22 carbon atoms, or an alkyl group having 8 to 22 carbon atoms.
2 more elements
Dependencies are inferred from the claim text.