Patent ID: 7285221
Filing Date: 2007-10-23
Classification: A01N,C02F

Abstract:
1. A composition for preventing formation of slime which consists essentially of sodium hypochlorite having a concentration of effective chlorine of 1 to 8% by weight, 1.5 to 9% by weight of sulfamic acid and at least one anionic polymer having a solid concentration of 0.5 to 4% by weight, said anionic polymer being selected from the group consisting of polymaleic acid, polyacrylic acid, a copolymer of acrylic acid and 2-hydroxy-3-allyloxypropane sulfonic acid, a copolymer of acrylic acid and 2-acrylamide-2-methylpropane sulfonic acid a copolymer of acrylic acid and isoprene sulfonic acid, a copolymer of acrylic acid and 2-hydroxyethyl methacrylate, a copolymer of acrylic acid, 2-hydroxyethyl methacrylate and isopropylene sulfonic acid, a copolymer of maleic acid and pentene, a copolymer of maleic acid and isobutylene, an alkaline metal salt of said anionic polymer and an alkaline earth metal salt of said anionic polymer wherein said anionic polymer has a weight-average molecular weight in the range of 500 to 50,000, and 2.5 to 20% by weight of sodium hydroxide, each of said concentrations expressed in a percentage being calculated on the total amount by weight of the composition, and said composition has a pH of 12 or greater.