Tint base paint formulation with a poly(oxyalkylene-urethane) associative thickener modified with a hydrophobic oligomer
AssigneesRohm and Haas Company, Dow Global Technologies LLC
InventorsJohn J. Rabasco, Duane R. Romer, Daniel A. Saucy, Antony K. Van Dyk
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Abstract
The present invention relates to a composition comprising an aqueous dispersion of acrylic based polymer particles; less than 15 PVC of a pigment; and a hydrophobically modified poly(oxyalkylene-urethane) rheology modifier having a hydrophobic portion represented by Structure I: Where R, R1, R2, m an n are defined herein. The composition provides viscosity stability for paint formulations containing a HEUR rheology modifier.
Claims9
A composition comprising an aqueous dispersion of a) 10 to 60 weight percent, based on the weight of the composition, of polymer particles;
- b) less than 15 pigment volume concentration (PVC) of pigment particles;
- and c) from 0.05 to 2 weight percent, based on the weight of the composition, of a hydrophobically modified poly(oxyalkylene-urethane) rheology modifier having a hydrophobic portion represented by Structure I:
- where R is a C2-C20 divalent hydrocarbyl group;
- each R1 is independently H or methyl;
- each R2 is independently H, C1-C18-alkyl, C5-C8-cycloalkyl, aryl, C1-C18-alkylaryl, C1-C3-dialkylamino-C1-C18-alkyl, C1-C30-alkoxy-(CH2CH2O)z—CH2CH2—, aryloxy-(CH2CH2O)zCH2CH2— or glycidyl;
- m is 2 to 20;
- n is 0 to 20;
- m+n is 2 to 20;
- and z is from 0 to 50.
Dependencies are inferred from the claim text.