EP 0000194 B1 19800723 - PREPARATION OF ISOCYANATE-SUBSTITUTED ALLOPHANATES AND THEIR USE FOR THE PREPARATION OF LACQUERS
Title (en)
PREPARATION OF ISOCYANATE-SUBSTITUTED ALLOPHANATES AND THEIR USE FOR THE PREPARATION OF LACQUERS
Publication
Application
Priority
DE 2729990 A 19770702
Abstract (en)
[origin: ES471337A1] The present invention relates to a process for the preparation of allophanates containing aliphatically and/or cycloaliphatically bound isocyanate groups by the reaction of organic compounds containing urethane groups with organic polyisocyanates containing aliphatically and/or cycloaliphatically bound isocyanate groups, characterized in that the reaction is carried out in the presence of strong acids which form a mixed carbamic acid anhydride with aliphatic or cycloaliphatic isocyanates. The present invention also relates to the allophanates produced therefrom.
IPC 1-7
IPC 8 full level
C08G 18/00 (2006.01); C07C 67/00 (2006.01); C07C 239/00 (2006.01); C07C 271/20 (2006.01); C07C 273/18 (2006.01); C07C 275/04 (2006.01); C08G 18/78 (2006.01); C08G 18/80 (2006.01); C07C 275/60 (2006.01)
CPC (source: EP US)
C07C 273/1809 (2013.01 - EP US); C08G 18/7818 (2013.01 - EP US); C08G 18/7837 (2013.01 - EP US); C08G 18/8009 (2013.01 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
BE DE FR GB NL SE
DOCDB simple family (publication)
EP 0000194 A1 19790110; EP 0000194 B1 19800723; AT 355558 B 19800310; AT A476578 A 19790815; BR 7804138 A 19790320; DD 138315 A5 19791024; DE 2729990 A1 19790118; DE 2860048 D1 19801113; ES 471337 A1 19790116; IT 1105225 B 19851028; IT 7850121 A0 19780630; JP S5414921 A 19790203; JP S6136508 B2 19860819; US 4160080 A 19790703
DOCDB simple family (application)
EP 78100239 A 19780626; AT 476578 A 19780630; BR 7804138 A 19780629; DD 20643378 A 19780630; DE 2729990 A 19770702; DE 2860048 T 19780626; ES 471337 A 19780630; IT 5012178 A 19780630; JP 7877978 A 19780630; US 92056278 A 19780629