发明名称 |
Method for rosin esterification |
摘要 |
The catalytic combination of phosphinic acid (also called hypophosphorous acid) and a phenol sulfide compound is disclosed to accelerate the reaction rate of esterification of rosin with a polyhydric alcohol, as well as provide product color improvements. According to the process of the invention, a rosin is reacted with up to a 50% equivalent excess of the polyhydric alcohol in the presence of phosphinic acid and a phenol sulfide compound at a temperature of from about 180 DEG C. to about 300 DEG C.
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申请公布号 |
US4650607(A) |
申请公布日期 |
1987.03.17 |
申请号 |
US19850732438 |
申请日期 |
1985.05.09 |
申请人 |
WESTVACO CORP. |
发明人 |
LAMPO, CIRO S.;TURNER, WILLIAM T. |
分类号 |
B01J31/02;C08L93/00;C08L93/04;C09F1/04;(IPC1-7):C09F1/04;C09F7/00 |
主分类号 |
B01J31/02 |
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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