发明名称 |
A PROCESS FOR THE RECOVERY OF LACTIC ACID ESTERS AND AMIDES FROM AQUEOUS SOLUTIONS OF LACTIC ACID AND/OR SALTS THEREOF |
摘要 |
The invention provides a process for the recovery of purified lactic acid values from an aqueous feed solution containing lactic acid, lactic acid salt, or mixtures thereof, comprising: bringing the feed solution into contact with a substantially immiscible anion exchanger to form a substantially waterimmiscible phase comprising an anion exchanger-lactic acid adduct; effecting a condensation reaction in the substantially water-immiscible phase between a carboxylic moiety of the lactic acid adduct and a moiety selected from a hydroxyl moiety and a primary or secondary amine moiety to respectively form a lactic acid ester or amine product; and separating the formed lactic acid product from the anion exchanger.
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申请公布号 |
CA2268311(A1) |
申请公布日期 |
1998.04.16 |
申请号 |
CA19972268311 |
申请日期 |
1997.10.02 |
申请人 |
CARGILL INCORPORATED |
发明人 |
EYAL, AHARON MEIR;MCWILLIAMS, PAUL;GRUBER, PATRICK R.;WITZKE, DAVID R. |
分类号 |
C07C51/47;C07C51/48;C07C67/08;C07C69/68;C07C231/02;(IPC1-7):C07C51/47 |
主分类号 |
C07C51/47 |
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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