发明名称 |
Process for the preparation of mono-condensation derivatives of adipic acid |
摘要 |
An improved process for preparing mono-condensation derivatives of adipic acid with fewer steps and better purity is disclosed. In particular, this process comprises: (a) forming relatively concentrated and pure cyclic monomeric adipic anhydride by depolymerization and concentration starting from polymeric adipic anhydride; and (b) adding a condensation reactant having an active hydrogen, e.g., a primary or secondary amine, to said cyclic monomeric adipic anhydride to form the corresponding mono-condensation derivative of adipic acid. |
申请公布号 |
US5286879(A) |
申请公布日期 |
1994.02.15 |
申请号 |
US19920956926 |
申请日期 |
1992.10.05 |
申请人 |
THE PROCTER & GAMBLE COMPANY |
发明人 |
LETTON, JAMES C.;MILLER, LARRY E. |
分类号 |
C07C55/14;C07C231/02;C07C241/04;C07C327/26;C07C409/40;C07D313/04;(IPC1-7):C07D305/00;C07C229/00;C07C205/00 |
主分类号 |
C07C55/14 |
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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