SULFONIC GROUP-CONTAINING, MALEIC ACID-BASED, WATER-SOLUBLE COPOLYMER AQUEOUS SOLUTION AND POWDER OBTAINED BY DRYING THE AQUEOUS SOLUTION,申请号US20090863865-传众专利搜索

SULFONIC GROUP-CONTAINING, MALEIC ACID-BASED, WATER-SOLUBLE COPOLYMER AQUEOUS SOLUTION AND POWDER OBTAINED BY DRYING THE AQUEOUS SOLUTION

申请公布号：US2010292122(A1)

申请号：US20090863865

申请日期：2009.03.27

申请公布日期：2010.11.18

申请人：

NIPPON SHOKUBAI CO., LTD.

发明人：TSUMORI TAKAHIRO;NAKANO MASATO

分类号：C08K3/20;C02F5/10;C11D3/39

主分类号：C08K3/20

摘要：Provided is a copolymer aqueous solution which exerts a high calcium carbonate-deposition suppressing ability even under high hardness condition, has excellent storage stability, and suppresses coloring of a detergent to yellow even when used as a detergent raw material. The water-soluble copolymer aqueous solution includes a water-soluble copolymer and hydrogen peroxide as essential components, in which: the water-soluble copolymer at least includes, as its structure, a structural unit originating from a monoethylenic unsaturated dicarboxylic acid (or dicarboxylate) monomer having 4 to 6 carbon atoms or its anhydride (a) at 30 to 60 mol %, a structural unit originating from a monoethylenic unsaturated monocarboxylic acid (or monocarboxylate) monomer having 3 to 8 carbon atoms (b), and a structural unit originating from a monoethylenic unsaturated monomer having a sulfonic (or sulfonate) group (c); the water-soluble copolymer has a weight average molecular weight of 1,000 or more and 50,000 or less; the water-soluble copolymer aqueous solution has a weight ratio of the hydrogen peroxide of 10 ppm to 50,000 ppm with respect to a solid content of the water-soluble copolymer aqueous solution; and the water-soluble copolymer aqueous solution has a weight ratio of water of 33% to 99%.