| 发明名称 |
Reduction of carbonyl impurities in alpha , beta -unsaturated acids and esters |
| 摘要 |
The invention provides a process for reducing one or more carbonyl impurity present in a monomer of an alpha , beta -unsaturated carboxylic acid or its alkyl ester by treating the monomer containing the carbonyl impurities with a trialkyl phosphite or a triaryl phosphite.
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| 申请公布号 |
US5789613(A) |
申请公布日期 |
1998.08.04 |
| 申请号 |
US19970848002 |
申请日期 |
1997.04.28 |
| 申请人 |
ROHM AND HAAS COMPANY |
发明人 |
BAUER, JR., WILLIAM;QUIROS, NELSON IVAN |
| 分类号 |
G02B6/00;C07C51/48;C07C51/487;C07C57/07;C07C57/075;C07C67/08;C07C67/60;C07C69/54;G02B1/04;(IPC1-7):C07C67/48 |
主分类号 |
G02B6/00 |
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