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    • 6. 发明授权
    • Thickening system for incorporating fluorescent whitening agents
    • 用于掺入荧光增白剂的增稠系统
    • US5425898A
    • 1995-06-20
    • US126920
    • 1993-09-27
    • Martin A. PhillippiJohn D. Decatur
    • Martin A. PhillippiJohn D. Decatur
    • C11D1/72C11D3/39C11D3/42C11D10/04C11D17/00C09K11/06
    • C11D17/003C11D10/045C11D3/3947C11D3/42C11D1/72
    • A freeze-thaw stable thickening system for laundry products incorporating low levels of an acid-insoluble fluorescent whitening agent, a nonionic surfactant that comprises substantially of hydrophilic polyethoxylated alcohol oligomers, a fatty acid soap, and acidic pH adjusting agent is provided. The thickening system may be formulated with a bleaching product and preferably with a peroxide bleach product. Preferred polyethoxylated alcohol oligomers comprise a mixture of alcohols having the structureCH.sub.3 (CH.sub.2).sub.n (OCH.sub.2 CH.sub.2).sub.x OHwherein n is about 11 to about 14 and x is from 0 to about 20 and wherein the average number of ethylene oxide groups per molecule is about 6-10, and preferably about 7. Preferably the total amount of polyethoxylated alcohols having x equal to 0, 1, or 2 comprise less than about 10% by weight of the mixture of polyethoxylated alcohols.
    • 提供了含有低水平的不溶于酸的荧光增白剂的洗衣产品的冻融稳定增稠系统,基本上由亲水性聚乙氧基化醇低聚物,脂肪酸皂和酸性pH调节剂组成的非离子表面活性剂。 增稠系统可以用漂白产品配制,优选用过氧化物漂白剂制成。 优选的聚乙氧基化醇低聚物包含具有CH 3(CH 2)n(OCH 2 CH 2)x OH结构的醇的混合物,其中n为约11至约14,x为0至约20,并且其中每分子的平均环氧乙烷基数为约 6-10,优选约7.优选地,具有x等于0,1或2的聚乙氧基化醇的总量占聚乙氧基化醇的混合物的小于约10重量%。