C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
134/27
C11D 3/37 (2006.01) C11D 3/00 (2006.01)
Patent
CA 1100379
Abstract of the Disclosure As a modifier for carpet shampoos and the like, an aqueous composition containing a polymer component comprising an aqueous dispersion of an acrylic polymer, polyvalent metal ions, ammonia or a volatile amine] to solubilize the copolymer, and optionally CO3?, HCO3? or an anion of an amino acid. The acrylic polymer is a low molecular weight copolymer of 20-60 parts butyl acrylate, 0-25 parts styrene, 0-15 parts methyl meth- acrylate, and 40-60 parts of at least one of meth- acrylic acid, acrylic acid, and itaconic acid. Prefe- rably the polymer contains at least about 5 parts of styrene, the styrene:butyl acrylate ratio being no more than 1:1. The pka of the polymer component is less than about 6.7 and the number average molecular weight of the polymer is about 2500-100,000. The viscosity in centipoises at 25% solids of polymer in water at 35°C. and containing at least two equivalents of ammonium cation and at least 0.8 equivalents of zinc as zinc oxide, is preferably below 3,500 cps, more preferably below 1,500 cps.
305430
Gehman David R.
Kirn William A.
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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