Abstract: Prepolymers of Formula (I) are useful in hydrogel materials
wherein
M is a hydrophilic radical derived from at least one hydrophilic ethylenically unsaturated monomer and having a molecular weight of about 500 to 5000;
each R is independently selected from an alkylene group having 1 to 10 carbon atoms wherein the carbon atoms may include ether, urethane or ureido linkages therebetween;
each R′ is independently selected from hydrogen, monovalent hydrocarbon radicals or halogen substituted monovalent hydrocarbon radicals wherein the hydrocarbon radicals have 1 to 18 carbon atoms which may include ether linkages therebetween;
a is an integer equal to or greater than 1;
each U is independently a divalent urethane or ureido segment;
x is greater than or equal to 1, y is greater than or equal to 1; and z is greater than or equal to 1; and
each E is independently a polymerizable, ethylenically unsaturated radical.
Abstract: This invention relates to the preparation of stable, quaternized vinylpyridine carboxylate homo-, co- and ter-polymers in high yield and purity, which polymers are useful as dye transfer inhibitors and polymers complexable with active agrochemical, pharmaceutical or cosmetic agents for controlled release thereof.
Type:
Grant
Filed:
September 22, 1999
Date of Patent:
March 13, 2001
Assignee:
ISP Investments Inc.
Inventors:
Jenn S. Shih, Eduardo T. Yap, John C. Hornby, Bala Srinivas
Abstract: A polymer electrolyte which contains an inorganic pigment, having a sulfonated polystyrene resin as a principal ingredient, and is soluble to water.
Abstract: Mannich (alk)acrylamide microparticles are produced at high solids contents without a significant increase in bulk viscosity by inverse microemulsion polymerization and provide superior dewatering characteristics.