EP 0000381 B1 19800806 - PROCESS FOR THE PREPARATION OF ISOCYANATE POLYADDITION PRODUCTS CONTAINING LATERAL HYDROXYL GROUPS AND PRODUCTS OBTAINED BY THIS PROCESS
Title (en)
PROCESS FOR THE PREPARATION OF ISOCYANATE POLYADDITION PRODUCTS CONTAINING LATERAL HYDROXYL GROUPS AND PRODUCTS OBTAINED BY THIS PROCESS
Publication
Application
Priority
DE 2732131 A 19770715
Abstract (en)
[origin: ES471750A1] The present invention relates to a process for the preparation of substantially linear isocyanate polyaddition products having side-chain hydroxyl groups by the reaction of reactive systems which contain free isocyanate groups and oxazolidine groups with water, characterized in that (a) substantially linear prepolymers which contain both isocyanate groups and oxazolidine groups in end positions or (b) a mixture containing substantially linear isocyanate prepolymers and bis-oxazolidines are chain lengthened by mixing with water, using a quantity of water calculated to provide at least about 1 mol of water per mol of oxazolidine groups present in the reaction mixture. The present invention also relates in particular to an embodiment of this process in which the prepolymers used contain chemically built-in hydrophilic groups and/or external emulsifiers, and water is used in such excess that the reaction leads directly to aqueous dispersions or solutions of the polyaddition products. Lastly, the present invention also relates to isocyanate polyaddition products obtainable by the process according to the invention.
IPC 1-7
IPC 8 full level
C08G 18/08 (2006.01); C08G 18/10 (2006.01); C08G 18/30 (2006.01); C08G 18/00 (2006.01); C08G 18/32 (2006.01); C08G 18/65 (2006.01)
CPC (source: EP US)
C08G 18/10 (2013.01 - EP US); Y10S 528/904 (2013.01 - EP)
C-Set (source: EP US)
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0000381 A1 19790124; EP 0000381 B1 19800806; DE 2732131 A1 19790125; DE 2860113 D1 19801127; ES 471750 A1 19790201; IT 1105095 B 19851028; IT 7850255 A0 19780712; JP S5420098 A 19790215; JP S6131728 B2 19860722; US 4192937 A 19800311
DOCDB simple family (application)
EP 78100323 A 19780707; DE 2732131 A 19770715; DE 2860113 T 19780707; ES 471750 A 19780714; IT 5025578 A 19780712; JP 8461778 A 19780713; US 92128578 A 19780703