Title:
CATALYTICAL CONDENSATION METHOD OF ISOCYANATE AND CARBOXYLIC ACID OR UNHYDRIDE THEREOF
Document Type and Number:
Japanese Patent JPS5392703
Kind Code:
A
Abstract:
An improved process is described for the reaction of an isocyanate (mono or poly) with a carboxylic acid or anhydride (mono or poly) to form the corresponding imide, amide or amide-imides. The improvement lies in using as the catalyst the 1-oxide, 1-sulfide or 1-hydrocarbylimino derivative of a phospholene, phospholane or phosphetane. The latter compounds are also substituted in the 1-position by a hydrocarbyl (C1-12) or halohydrocarbyl (C1-12) and may additionally carry one or more halo, lower-alkoxy, phenoxy, lower-hydrocarbyl or halo-substituted hydrocarbyl groups on the ring carbon atoms.
Inventors:
KEMARU BEZAA ONDAA
KAATEISU PEEJI SUMISU
KAATEISU PEEJI SUMISU
Application Number:
JP514878A
Publication Date:
August 15, 1978
Filing Date:
January 20, 1978
Export Citation:
Assignee:
UPJOHN CO
International Classes:
B01J31/00; B01J31/02; C07B31/00; C07B43/06; C07B61/00; C07C67/00; C07C231/00; C07C231/02; C07C231/10; C07C233/07; C07C233/09; C07C233/43; C07C233/65; C07D209/48; C07D487/04; C07F9/6568; C08G18/00; C08G18/16; C08G18/34; C08G69/00; C08G69/04; C08G73/14; (IPC1-7): B01J31/02; C07C103/30; C07D209/48; C08G73/10