Polymeric surfactant and latex made therefrom
AssigneePPG Industries, Inc.
InventorsLeon Perez, Shanti Swarup, Edward E. McEntire, Lisa E. Jakiela
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Abstract
A polymeric surfactant comprises the reaction product of ethylentcally unsaturated monomers at least 40 percent by weight of which are acid group containing monomers, including a combination of both acrylic acid and methacrylic acid, at least a portion of the acid groups being neutralized by a base. Also disclosed is an aqueous acrylic latex made by polymerizing a second polymer from ethylenically unsaturated monomers in the presence of said polymeric surfactant, whereby the latex comprises polymeric particles containing two polymers. The latex may be used to advantage in very low V.O.C. coatings that may be spray applied.
Claims38
An aqueous polymeric composition comprising:
- water;
- and
- a polymeric surfactant which is the reaction product of ethylenically unsaturated monomers, at least 40 percent by weight of which are acid group containing monomers, the acid group containing monomers including two different unsaturated acid group containing acrylic monomers in relative proportions of 1:10 to 10:1, wherein the two different acid group containing monomers include acrylic acid and methacrylic acid, and wherein the acid groups have been at least partially neutralized by a base so as to render the polymeric surfactant dispersible in water.
An aqueous acrylic latex comprising polymeric particles, at least a portion of said particles containing two polymers, the first polymer being polymerized from ethylenically unsaturated monomers at least 40 percent by weight of which are acid group containing monomers, including two different unsaturated acid group containing acrylic monomers in relative proportions of 1:10 to 10:1, wherein the acid group containing monomers from which the first polymer is polymerized comprise acrylic acid and methacrylic acid, and the second polymer being polymerized from ethylenically unsaturated monomers.
Dependencies are inferred from the claim text.