Title:
CATALYST FOR ISOCYANATE POLYADDITION
Document Type and Number:
Japanese Patent JPS5287496
Kind Code:
A
Abstract:
This invention relates to new catalyst combinations having improved catalytic activity for isocyanate polyaddition reactions. The catalysts are combinations of known metal catalysts with aromatic compounds which contain at least one nitrogen atom as a hetero atom and have at least one primary amino group in the ortho- or para-position to the hetero atom. Preferred aromatic compounds include wherein R1, R2, R3 and R4 which may be the same or different, each represent a hydrogen atom, an aliphatic hydrocarbon group having from 1 to 6 carbon atoms or an aromatic hydrocarbon group having from 6 to 12 carbon atoms or two of the groups R1 to R4 represent a condensed aromatic ring.
Inventors:
HORUGERU MAIBORUKU
Application Number:
JP252877A
Publication Date:
July 21, 1977
Filing Date:
January 14, 1977
Export Citation:
Assignee:
BAYER AG
International Classes:
C08G18/00; C08G18/16; C08G18/18; C08G18/28; (IPC1-7): C08G18/14; C08G18/22