发明名称 |
MAGNESIUM CATALYST LIQUID FOR PREPARATION OF DIHYDROXY ESTERS |
摘要 |
<p>A catalyst and process for preparation of dihydroxy esters from specified hydroxy aldehydes is disclosed. In one embodiment, a catalyst liquid is provided which comprises from 10 percent to 60 percent magnesium salt of a specified alkanoic acid or acids, and from 90 percent to 40 percent of a particular alkanoic acid or acids, the molar ratio of alkanoic acid to magnesium salt being from about 1.5 to 20.3. The catalyst solution or liquid contacts or is contacted with a specified hydroxy aldehyde under suitable reaction conditions to form the desired dihydroxy ester. In another embodiment, dihydroxy esters are derived from specified hydroxy aldehydes by first forming a magnesium catalyst containing liquid by reacting magnesium or magnesium oxide, under suitable conditions, with a suitable alkanoic acid or acids, the acid or acids being provided in excess in specified molar ratios. The magnesium salt-alkanoic acid liquid produced is then employed as a catalyst liquid to convert the respective hydroxy aldehyde under suitable reaction conditions to form the desired dihydroxy ester.</p> |
申请公布号 |
EP0902778(B1) |
申请公布日期 |
2001.10.31 |
申请号 |
EP19970921393 |
申请日期 |
1997.04.25 |
申请人 |
EASTMAN CHEMICAL COMPANY |
发明人 |
CLUBB, CLYDE, NEAL;DEVON, THOMAS, JAMES;LUCE, GARRETT, CLEMENT |
分类号 |
B01J31/04;B01J21/10;B01J35/12;C07C67/44;C07C69/675;(IPC1-7):C07C67/44 |
主分类号 |
B01J31/04 |
代理机构 |
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代理人 |
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主权项 |
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