EP 1517936 A1 20050330 - WATER-DILUTABLE CROSS-LINKING AGENT
Title (en)
WATER-DILUTABLE CROSS-LINKING AGENT
Title (de)
WASSERVERDÜNNBARER VERNETZER
Title (fr)
AGENT RETICULANT POUVANT ETRE DILUE DANS L EAU
Publication
Application
Priority
- DE 0300982 W 20030325
- DE 10214027 A 20020327
Abstract (en)
[origin: WO03080695A1] The invention relates to a water-dilutable cross-linking agent that does not comprise any free NCO groups but has at least two blocked NCO groups per molecule and a ratio of blocked NCO groups to OH groups of greater than 3: 1. Said cross-linking agent can be obtained by reacting an alkanolamine with at least one partially blocked polyisocyanate having an NCO equivalent weight ranging from 600 to 10,000 g/MolNCO (with regard to free NCO groups) to form an intermediate product comprising at least one urea linkage resulting from the nitrogen atom of the alkanolamine and of the free NCO group of the partially blocked polyisocyanate followed by adding a cyclic carboxylic acid anhydride, under decyclization, to the OH group of the intermediate product, said OH group originating from the alkanol amine. The invention also relates to the use of this water-dilutable cross-linking agent in the painting of automobiles.
IPC 1-7
IPC 8 full level
C08G 18/32 (2006.01); C08G 18/70 (2006.01); C08G 18/80 (2006.01); C09J 175/04 (2006.01)
CPC (source: EP)
C08G 18/3271 (2013.01); C08G 18/706 (2013.01); C08G 18/8012 (2013.01); C08G 18/8077 (2013.01); C09J 175/04 (2013.01)
Citation (search report)
See references of WO 03080695A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 03080695 A1 20031002; AU 2003229271 A1 20031008; DE 10214027 A1 20031016; DE 10214027 B4 20040930; DE 10391698 D2 20050217; EP 1517936 A1 20050330
DOCDB simple family (application)
DE 0300982 W 20030325; AU 2003229271 A 20030325; DE 10214027 A 20020327; DE 10391698 T 20030325; EP 03724850 A 20030325