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1. IN27/DELNP/2008 - METHOD FOR PRODUCING A STORAGE-STABLE AND COLORLESS LIQUID POLYISOCYANATE COMPOSITION PROCESSING CARBODIIMIDE AND/OR URETONIMINE GROUPS

Office India
Application Number 27/DELNP/2008
Application Date 01.01.2008
Publication Number 27/DELNP/2008
Publication Date 25.07.2008
Publication Kind A
IPC
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18
Polymeric products of isocyanates or isothiocyanates
06
with compounds having active hydrogen
70
characterised by the isocyanates or isothiocyanates used
72
Polyisocyanates or polyisothiocyanates
77
having hetero atoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
78
Nitrogen
79
characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
C08G 18/79
Applicants HUNTSMAN INTERNATIONAL LLC
Inventors JORIS BOSMAN
Priority Data 05106178.6 07.07.2005 EP
Title
(EN) METHOD FOR PRODUCING A STORAGE-STABLE AND COLORLESS LIQUID POLYISOCYANATE COMPOSITION PROCESSING CARBODIIMIDE AND/OR URETONIMINE GROUPS
Abstract
(EN)
Method for producing a storage-stable and colorless liquid polyisocyanate composition possessing carbodiimide and/or uretonimine groups comprising the steps of a) condensing a polyisocyanate in the presence of a catalyst selected from the group consisting of phospholenes, phospholidines and/or their oxides, and b) stopping the condensation by adding adipoylchloride as catalyst killer.