Copolymers as thickeners and modifiers for latex systems

Details Copolymers as thickeners and modifiers for latex systems Copolymers as thickeners and modifiers for latex systems

1989-12-29

1991-04-30

Schofer, Joseph L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560222, 564 56, C07C 6952

Patent

active

050119788

ABSTRACT:
A thickened aqueous copolymer solution useful for thickening and improving the properties of latex systems comprising a copolymer having as monomeric units: about 79-99 percent of a (meth)acrylic acid salt of sodium, potassium, or ammonium; about 0-20 percent of (meth)acrylic acid; about 0-20 percent of a lower alkyl ester of (meth)acrylic acid; about 1-21 percent of surfactant units selected from the urea reaction product of a monoethylenically unsaturated monoisocyanate with a nonionic surfactant having amine functionality; and about 0-1 percent of a copolymerizable polyethylenically unsatured monomer, said percentages being by weight based on the total weight of monomeric units in said copolymer.

REFERENCES:
patent: 2694695 (1954-11-01), Bortnick
patent: 2734891 (1956-02-01), Melamed
patent: 4857556 (1989-08-01), Yamada et al.

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