Emulsion of an associative acrylic polymer polymerised in the presence of polyglycerols and its use as a thickening agent in an aqueous formulation

摘要

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.

主权项

1. 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, 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 n is 2 or 3 and 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.