公开(公告)号：US4126586A

公开(公告)日：1978-11-21

申请号：US766170

申请日：1977-02-07

申请人： Michael Curtis ,  Richard L. Davies ,  John S. Galvin

发明人： Michael Curtis ,  Richard L. Davies ,  John S. Galvin

IPC分类号： C11D1/38 ,  C11D1/62 ,  C11D1/72 ,  C11D1/835 ,  C11D3/26 ,  C11D11/02

CPC分类号： C11D1/835 ,  C11D1/38 ,  C11D11/02 ,  C11D3/26 ,  C11D1/62 ,  C11D1/72

摘要： The problem of autoxidation of detergent powders containing relatively large amounts of nonionic surfactants is reduced by incorporating in the crutcher slurry a compound containing a positively charged nitrogen atom. Such compounds should be present in an amount of from 1/2 to 6% of the resultant spray-dried powder. If desired they can be incorporated into the slurry by injection into the high pressure line to the spray-drying tower. Typical compounds containing positively charged nitrogen atoms are quaternary ammonium or organic heterocycle salts, amine oxides and betaines, although quaternary ammonium salts are preferred.

摘要翻译： 含有相当大量非离子表面活性剂的洗涤剂粉末的自氧化问题通过在搅拌浆中掺入含有带正电荷的氮原子的化合物而降低。 这些化合物的存在量应为所得喷雾干燥粉末的1/2至6％。 如果需要，它们可以通过注入到喷雾干燥塔的高压管线中而被并入浆料中。 含有带正电荷的氮原子的典型化合物是季铵或有机杂环盐，氧化胺和甜菜碱，尽管优选季铵盐。