Title:
HIGHHMOLECULAR INSOLUBLE CARBODIIMIDO CATALYSTS AND MANUFACTURE
Document Type and Number:
Japanese Patent JPS5263890
Kind Code:
A
Abstract:
The instant invention relates to novel carbodiimidization catalysts consisting of a high molecular weight, insoluble matrix, which is capable of swelling, and low molecular weight carbodiimidization catalysts fixed on, in, or to the matrix via convalent bonds. The novel high molecular weight catalysts are suitable for the preparation of storage stable, catalyst-free equilibrium mixtures of organic isocyanates, carbodiimides and uretone imines. Either the carbodiimide, or the uretone imine or both may contain isocyanate groups. Alternatively, mono and/or polyisocyanates free from carbodiimide and uretone imine groups may be added to the equilibrium mixture. The catalysts according to the invention are capable of bringing about selective carbodiimidization of individual isocyanates in a mixture of various isocyanates.
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Inventors:
BUARUTERU SHIEEFUERU
KUUNO BUAAKUNERU
HANSU DEIITERU BUROTSUKU
KUUNO BUAAKUNERU
HANSU DEIITERU BUROTSUKU
Application Number:
JP13853976A
Publication Date:
May 26, 1977
Filing Date:
November 19, 1976
Export Citation:
Assignee:
BAYER AG
International Classes:
C08F8/00; B01J31/06; C07B61/00; C07C67/00; C07C241/00; C07C267/00; C08F8/40; C08F299/04; C08G18/79; C08G63/00; C08G63/692; (IPC1-7): B01J31/06; C07C119/055; C08F8/40; C08F299/04