发明名称 |
METHOD OF MAKING POLYGLYCEROL ESTERS |
摘要 |
<p>Polyglycerol carboxylic acid esters are made by reaction of a, typically C<SUB>2</SUB> to C<SUB>30</SUB>, particularly C<SUB>6</SUB> to C<SUB>22</SUB>. carboxylic acid with glycerol carbonate, particularly with base catalyst, and desirably at temperatures from 170°C to 250°C. Other carbonates e.g. cyclic diol carbonates such as ethylene or propylene carbonates, may be used in combination with the glycerol carbonate to make novel mixed polymeric esters. The molar ratio of carboxylic acid group to glycerol carbonate is typically from 2 to 30, but can be up to 100. The base catalyst is desirably alkali metal hydroxide, carbonate or alkoxide. The reaction is desirably carried out in an inert atmosphere, and reducing agent such as phosphorous acid, hypophosphorous acid or borohydride and/or activated carbon, may be included to improve product colour.</p> |
申请公布号 |
WO2008142374(A1) |
申请公布日期 |
2008.11.27 |
申请号 |
WO2008GB01673 |
申请日期 |
2008.05.15 |
申请人 |
CRODA INTERNATIONAL PLC;BEVINAKATTI, HANAMANTHSA, SHANKARSA;WAITE, ALAN, GEOFFREY;FRANK, JACKIE |
发明人 |
BEVINAKATTI, HANAMANTHSA, SHANKARSA;WAITE, ALAN, GEOFFREY;FRANK, JACKIE |
分类号 |
C11C3/02;C07C67/08;C07C69/30 |
主分类号 |
C11C3/02 |
代理机构 |
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代理人 |
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地址 |
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