Formulation of a rheology modifier and a thermoplastic-epoxy hybrid latex
AssigneeRohm and Haas Company
InventorsJohn J. Rabasco, Wenqin Wang
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Abstract
The present invention relates to a composition comprising a hydrophobically modified alkylene oxide polymer having a hydrophobic portion characterized by the following group: where R1 and x are as defined herein; and a) an aqueous dispersion of thermoplastic polymer particles imbibed with a thermosettable compound functionalized with structural units of an anti-agglomerating monomer; and/or b) a curing agent. The composition of the present invention is useful for improving Brookfield viscosity and sag resistance in coatings arising from, for example, 2-component acrylic-epoxy hybrid systems cured with a curing agent.
Claims10
A composition comprising a) an aqueous dispersion of thermoplastic polymer particles imbibed with a thermosettable compound having at least two oxirane groups, which polymer particles are functionalized with from 0.1 to 5 weight percent structural units of an anti-agglomerating monomer;
- and b) a hydrophobically modified alkylene oxide polymer having a hydrophobic portion characterized by the following group:
- where R1 is C8-C32-alkyl;
- and x is from 10 to 200;
- and wherein the hydrophobically modified alkylene oxide copolymer has a weight average molecular weight (Mw) in the range of from 40,000 to 200,000 g/mol;
- wherein when the composition comprises the imbibed thermoplastic polymer particles, the weight-to-weight ratio of the imbibed thermoplastic polymer particles to the hydrophobically modified alkylene oxide copolymer is in the range of from 10:1 to 200:1.
Dependencies are inferred from the claim text.