发明名称 |
Method of purifying eicosapentaenoic acid and its esters |
摘要 |
A method of purifying eicosapentaenoic acid and esters of eicosapentaenoic acid comprising subjecting a mixture containing eicosapentaenoic acid or an ester of eicosapentaenoic acid to the following steps in either order: (1) urea treatment, where the treatment comprises contacting the mixture with a polar organic solvent containing dissolved urea whereby a solution containing the acid or ester is formed, precipitating urea crystals from the solution, and removing the urea crystals, and (2) fractional distillation.
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申请公布号 |
US4377526(A) |
申请公布日期 |
1983.03.22 |
申请号 |
US19810329883 |
申请日期 |
1981.12.11 |
申请人 |
NIPPON SUISAN KAISHA, LTD. |
发明人 |
FUJITA, TAKAO;MAKUTA, MASAHIRO |
分类号 |
C07C51/42;C07C51/44;(IPC1-7):B01D3/34 |
主分类号 |
C07C51/42 |
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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