发明名称 |
Process for reducing the levels of nitrite contaminants in amine oxide surfactants |
摘要 |
Amine oxide surfactants contaminated with nitrite are treated under acidic conditions with materials such as maleic acid and diethylenetriaminepentaacetate (DTPA) to reduce nitrite levels below 1 ppm. Thus, C12-13 dimethyl amine is oxidized with hydrogen peroxide in the presence of maleic acid and DTPA to reduce nitrite levels. The resulting nitrite-free amine oxide is employed in various detergent compositions.
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申请公布号 |
US5466870(A) |
申请公布日期 |
1995.11.14 |
申请号 |
US19940286844 |
申请日期 |
1994.08.05 |
申请人 |
THE PROCTER & GAMBLE COMPANY |
发明人 |
MILLER, LARRY E.;HAWKINS, GENE P.;DURHAM, BERNARD G. |
分类号 |
B01F17/16;C07C291/04;C11D1/75;(IPC1-7):C07C/ |
主分类号 |
B01F17/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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