EP 0986536 A1 20000322 - METHOD FOR THE PREPARATION OF ORGANIC ISOCYANATES
Title (en)
METHOD FOR THE PREPARATION OF ORGANIC ISOCYANATES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ORGANISCHEN ISOCYANATEN
Title (fr)
PROCEDE DE PREPARATION D'ISOCYANATES ORGANIQUES
Publication
Application
Priority
- EP 98925567 A 19980511
- EP 9802734 W 19980511
- EP 97201626 A 19970531
Abstract (en)
[origin: WO9854129A1] Method for the preparation of polymeric isocyanates by decomposing polymeric ureas of the formula: R<1>(NHCONR<2>R<3>)x wherein x is at least 2, R<1> is an organic radical of valency x and R<2> and R<3> are monovalent organic radicals, into polymeric isocyanates of the formula: R<1>(NCO)x and secondary amines of the formula: R<2>NHR<3> characterised in that at least one of the radicals R<2> and R<3> is bound to the nitrogen atom of the amine by a tertiary carbon atom.
IPC 1-7
IPC 8 full level
C07C 263/06 (2006.01); C08G 18/70 (2006.01); C07C 265/12 (2006.01)
CPC (source: EP)
C07C 263/06 (2013.01)
Citation (search report)
See references of WO 9854129A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IE IT LI LU NL PT SE
DOCDB simple family (publication)
WO 9854129 A1 19981203; AU 7763498 A 19981230; EP 0986536 A1 20000322; ZA 984489 B 19981130
DOCDB simple family (application)
EP 9802734 W 19980511; AU 7763498 A 19980511; EP 98925567 A 19980511; ZA 984489 A 19980526