发明名称 |
Aqueous process for preparing amido-carboxylic acids by reacting an amino acid with a carboxylic acid anhydride |
摘要 |
This invention relates to a process for preparing amido-carboxylic acids in water. The process involves four steps. Step (A) involves hydrolyzing a lactam at a temperature of 150 DEG C.-300 DEG C. to form a mixture containing an amino acid. Step (B) involves cooling the reaction mixture formed in Step (A) to a temperature of 25 DEG C.-100 DEG C. Step (C) involves reacting a carboxylic acid anhydride with the amino acid formed in Step (A) to form a reaction mixture containing an organic layer which contains an amido-carboxylic acid and an aqueous layer. Step (D) involves separating the amido-carboxylic acid containing organic layer from the aqueous layer. The presence of water aids in product isolation by phase separation and recycle of the reactants. Amido-carboxylic acids are used to make bleach activators for detergents. |
申请公布号 |
AU2243895(A) |
申请公布日期 |
1995.11.10 |
申请号 |
AU19950022438 |
申请日期 |
1995.04.07 |
申请人 |
EASTMAN CHEMICAL COMPANY |
发明人 |
GEORGE CHESTER ZIMA;THOMAS HUGH WILLIAMS |
分类号 |
C07C231/02;C07C231/08;C07C233/46;C07C233/47 |
主分类号 |
C07C231/02 |
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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