EP 1399497 A1 20040324 - PRODUCTION OF MASKED ISOCYANATES, PARTICULARLY MASKED POLYISOCYANATES
Title (en)
PRODUCTION OF MASKED ISOCYANATES, PARTICULARLY MASKED POLYISOCYANATES
Title (de)
HERSTELLUNG MASKIERTER ISOCYANATE, INSBESONDERE MASKIERTER POLYISOCYANATE
Title (fr)
PREPARATION D'ISOCYANATES MASQUES, NOTAMMENT DE POLYISOCYANATES MASQUES
Publication
Application
Priority
- FR 0202198 W 20020625
- FR 0108351 A 20010625
Abstract (en)
[origin: FR2826366A1] The invention relates to a method for the production of masked (poly)isocyanates using a masking agent with a C=N bond and a labile hydrogen atom on the alpha atom relative to the nitrogen of the C=N group, characterised in comprising the following steps: a) preparation of a masking agent with a C=N bond and a labile hydrogen atom on the alpha atom relative to the nitrogen of the C=N group which may be obtained by condensation of an aldehyde or ketone precursor with a nitrogen-containing precursor which has a functional group reactive towards the carbonyl moiety of the aldehyde or ketone, in an aqueous, organic or hydroorganic medium with liberation of water of condensation; b) <i>in situ</i> reaction of the masking agent with a (poly)isocyanate component for masking to give said (poly)isocyanates which are totally or partially masked.
IPC 1-7
IPC 8 full level
C07D 231/06 (2006.01); C08G 18/79 (2006.01); C08G 18/80 (2006.01); C09D 175/04 (2006.01)
CPC (source: EP KR US)
C08G 18/792 (2013.01 - EP US); C08G 18/80 (2013.01 - KR); C08G 18/807 (2013.01 - EP US); C08G 18/8077 (2013.01 - EP US)
Citation (search report)
See references of WO 03000763A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
FR 2826366 A1 20021227; FR 2826366 B1 20050311; EP 1399497 A1 20040324; JP 2004533471 A 20041104; KR 20040014580 A 20040214; US 2004242833 A1 20041202; WO 03000763 A1 20030103
DOCDB simple family (application)
FR 0108351 A 20010625; EP 02758520 A 20020625; FR 0202198 W 20020625; JP 2003507164 A 20020625; KR 20037016895 A 20031224; US 48150404 A 20040706