EP 0000761 B1 19811125 - PROCESS FOR THE PREPARATION OF POLYURETHANE FOAMS
Title (en)
PROCESS FOR THE PREPARATION OF POLYURETHANE FOAMS
Publication
Application
Priority
DE 2736138 A 19770811
Abstract (en)
[origin: EP0000761A1] 1. Process for the production of non-shrinking foams which contain urethane groups by the reaction of compounds with a molecular weight of from 400 to 100,000 which have at least 2 active hydrogen atoms with polyisocyanates in the presence of water and/or organic blowing agents, silicon compounds and optionally in the presence of catalysts and other auxiliary agents, characterised in that the silicon compounds used are mixtures of compounds of the general formula : R**1 R2 SiO-[R2 SiO]n [RR**2 SiO]n' SiR2 R**1 wherein R denotes an alkyl or alkenyl group with up to 3 C atoms, R**2 denotes a chloromethyl group, R**1 represents a group R**2 or R, n' is a whole number or fraction of from 0 to 9, n is a whole number or fraction of from 0 to 9, and n + n' =< 10, n and n' representing the average composition of the mixtures, which are obtained by known hydrolysis of corresponding chlorosilanes and subsequent equilibration, and R**1 being the same as R**2 when n' = 0, which mixtures of compound are used in quantities of from 0.01 to 2.0% by weight, based on the compounds with a molecular weight of from 400 to 100,000 which have active hydrogen atoms.
IPC 1-7
IPC 8 full level
C08G 18/40 (2006.01); C08G 18/65 (2006.01); C08G 18/00 (2006.01); C08J 9/00 (2006.01)
CPC (source: EP)
C08G 18/4072 (2013.01); C08G 18/6564 (2013.01); C08J 9/0042 (2013.01); C08J 9/0061 (2013.01); C08G 2110/0008 (2021.01); C08G 2110/005 (2021.01); C08G 2110/0083 (2021.01); C08J 2375/04 (2013.01); C08J 2483/00 (2013.01)
Designated contracting state (EPC)
BE DE FR GB NL SE
DOCDB simple family (publication)
EP 0000761 A1 19790221; EP 0000761 B1 19811125; AU 3873478 A 19800214; AU 518959 B2 19811029; BR 7805123 A 19790410; DE 2736138 A1 19790301; DE 2861352 D1 19820128; DK 353478 A 19790212; ES 472468 A1 19790316; IT 1106871 B 19851118; IT 7850685 A0 19780809; JP S5430299 A 19790306; JP S612085 B2 19860122; MX 148879 A 19830629
DOCDB simple family (application)
EP 78100555 A 19780731; AU 3873478 A 19780808; BR 7805123 A 19780810; DE 2736138 A 19770811; DE 2861352 T 19780731; DK 353478 A 19780810; ES 472468 A 19780810; IT 5068578 A 19780809; JP 9628278 A 19780809; MX 17428678 A 19780724