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    • 3. 发明授权
    • Sulfonic group-containing, maleic acid-based, water-soluble copolymer aqueous solution and powder obtained by drying the aqueous solution
    • 含有磺酸基的马来酸基水溶性共聚物水溶液和干燥水溶液得到的粉末
    • US09133422B2
    • 2015-09-15
    • US12863865
    • 2009-03-27
    • Takahiro TsumoriMasato Nakano
    • Takahiro TsumoriMasato Nakano
    • C11D7/26C11D7/34C11D7/54C11D3/20C11D3/34C11D3/39C11D3/37C08J3/14C08L33/00C08L35/00C11D3/33C08L33/14C08L41/00
    • C11D3/2086C08J3/14C08L33/00C08L33/14C08L35/00C08L41/00C11D3/33C11D3/34C11D3/3757C11D3/378C11D3/3902C11D3/3942C11D3/3947C11D7/265C11D7/34C08L2666/04
    • 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%.
    • 提供即使在高硬度条件下也具有高碳酸钙沉积抑制能力的共聚物水溶液,具有优异的储存稳定性,并且即使用作洗涤剂原料也能抑制洗涤剂的着色。 水溶性共聚物水溶液包含水溶性共聚物和过氧化氢作为必要成分,其中:水溶性共聚物至少包含来自单烯属不饱和二羧酸(或二羧酸酯)的结构单元作为其结构, 具有4-6个碳原子的单体或其酸酐(a)的含量为30至60摩尔%,源自具有3-8个碳原子的单烯属不饱和一元羧酸(或单羧酸酯)单体(b)的结构单元,以及起始于 来自具有磺酸(或磺酸)基团(c)的单烯属不饱和单体; 该水溶性共聚物的重均分子量为1000以上且50,000以下, 相对于水溶性共聚物水溶液的固体成分,水溶性共聚物水溶液的过氧化氢重量比为10ppm〜50,000ppm; 水溶性共聚物水溶液的重量比为33〜99%。