Anti-Settling and Thickening Compositions and Methods for Using Same
AssigneeRhodia Operations
InventorsNemesio Martinez-Castro, Jose P. Ruiz
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Abstract
An anti-settling additive, composition containing the anti-settling additive, and methods for use in coating compositions or formulations. A HASE thickener with improved resistance to surfactants and anti-sag properties, compositions containing the thickener and methods for use of the thickener in coating compositions or formulations and the like. The anti-settling additive and the thickener being a polymer synthesized using a specialized associative monomer that contains C1-C4 alkyl, propylene oxide, ethylene oxide and a polymerizable group.
Claims46
A polymer which is an anti-settling additive or HASE thickener, the polymer comprising at least one specialized associative monomer that comprises:
- i) at least one polymerizable functional group per molecule;
- and
- ii) at least one polyether radical per molecule according to structure (I):
- R13—R12—R11 (I)
- wherein:
- R11 is C1-C4 alkyl,
- R12 is absent or is a bivalent linking group, and
- R13 is according to structure (VIIIa), (VIIIb) or (VIIIc):
- wherein:
- R4 is independently an alkyl chain containing 1 to about 4 carbon atoms;
- R5 is an alkyl chain containing 1 to 4 carbon atoms;
- R6 is an alkyl chain containing 1 to about 4 carbon atoms;
- M is an integer from 0 to about 50;
- N is an integer from 0 to 20;
- P is an integer from 0 to about 50;
- wherein P+M is greater than or equal to 1;
- wherein Q is an integer from 1 to 4.
Dependencies are inferred from the claim text.