Patent ID: 6506810
Filing Date: 2003-01-14
Classification: C08G,C08J

Abstract:
A process for producing flexible polyurethane foams which comprises reacting a polyol and an isocyanate in the presence of water, optionally a blowing agent and a mixture comprising:i) at least one organofunctionally modified polysiloxane of the formula I, â€ƒwhere the radicals R1 are alkyl radicals or aryl radicals, R2 are R1 and/or R3 and/or R4, R3 is a polyether radical of the formula II â€”(Y)e[O(C2H4âˆ’dRâ€²dO)m(CxH2xO)pZ]wâ€ƒâ€ƒ(II) â€ƒwith the proviso that e=0 to 1, w=1 to 4 d=1 to 3, m&gE;1, x=2 to 4, whereby x may be 2, 3, or 4 in the same polyether radical, and p&gE;1, and Y is a (w+1) -valent hydrocarbon radical which may be branched, Râ€² is selected from the group consisting of monovalent, aliphatic and aromatic hydrocarbon radicals Z is hydrogen or a monovalent organic radical, the sum m+p=1 to 150, R4 is a polyether radical of the formula III â€”(F)f[O(CxH2xO)rZ]gâ€ƒâ€ƒ(III) â€ƒwith the proviso that f=0 or 1, x=2to 4, g=1 to 4and r&gE;1, F is a (g+1) -valent hydrocarbon radical which may be branched, a is from 1 to 100 when b is from 6 to 8, a is from 1 to 200 when b is from 3 to 6, a is from 1 to 300 when b is from 0 to 3, b=0 to 8 and ii) at least one branched alcohol and derivatives thereof of the formula Râ€”CH2â€”Oâ€”Râ€²â€ƒâ€ƒ(IV) â€ƒwhere R=a branched alkyl radical having at least 7 carbon atoms and Râ€²=H, acyl or R3 as defined above.