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US 6,271,386 B1Granted
Product and process for making quaternized, water soluble vinylpyridine carboxylate polymers
AssigneeISP Investments Inc.
InventorsJenn S. Shih, Eduardo T. Yap, John C. Hornby, Bala Srinivas
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Abstract
This invention relates to stable, quaternized vinlypyridine carboxylate home-, co- and ter-polymers, useful as dye transfer inhibitors and polymers complexable with active agrochemical, pharmaceutical or cosmetic agents for controlled release thereof, and to a commercial process for the synthesis of said polymers in high yield and purity.
Claims21
A quaternized, water soluble vinyl pyridine carboxylate polymer containing (a) 30 to 100 wt. % quaternized units having the structure
- (b) 0 to 30 wt. % of a non-quaternized unit having the structure
- and (c) 0 to 70 wt. % of a free radical polymerizable comonomer wherein X is an anion;
- M is a cation;
- at least one of R1 and R2 in the expression (CR1R2)n is a carbonoxy containing radical selected from the group consisting of alkoxy, carboxyl, an alkali or alkaline earth metal salt of a carbxylic acid and a C2 to C9 carboxylate optionally substituted with halogen and any remaining non-carbonoxy containing R1 and R2 in the expression (CR1 R2) n is selected from the group consisting of hydrogen, lower alkyl and aryl, S and T are each independently hydrogen or C1 to C4 alkyl;
- and n has a value of 1 to 5.
2 more elements
Dependencies are inferred from the claim text.