Use of aqueous solutions of low viscosity stabilizing flexible polyurethane foams of hot cure containing polyether for producing flexible polyurethane foams hot curing.

摘要

aqueous solution of low viscosity stabilizing the flexible polyurethane foams hot curing having a viscosity 5000 mPa.s at 25 ° C, usable for the production of flexible polyurethane foams of hot cure, characterized in that the aqueous solution- low viscosity stabilizing the flexible foams of poly U-Retano hot curing it comprises the components listed below: = 40% by weight to = 70% by weight of polyethersiloxane, = 0.5% to = 20% by weight of an organic surfactant, = 10% by weight of water, = 0% by weight of organic solvent additives, in which the polyethersiloxane has the following formula (I): R1-Si (CH3) 2O - [Si (CH3) (OSi (CH3) 2R0) O-] u- [Si (OSi (CH3) 2R0) 2 O-] v- [Si (CH3) 2O] w- [SiCH3R2O] x- [SiCH3R3O- ] y- [SiCH3R4O] z- [SiR3R4O] t-Si (CH3) 2-R5 in which are: R0 = -O- [Si (CH3) 2O] w- [SiCH3R2O-] x- [SiCH3R3O-] y- [SiCH3R4O] z-Si (CH3) 2-R R1, R2, R3, R4 and R5, same or different from each other in each case, alkyl or aryl moiety of 1 to 12 carbon atoms or in each case -CH 2 -R 6 or -CH 2 -CH 2 R 6 or po (alkylene oxide) -poliéter of Formu -CmH2mO (C2H4O) a (C3H6O) b ( C4H8O) c (C2H3O-C6H5) d (C12H24O) GR7 (II), = H, C6H5, -CN, C1 to C10, -CH-CH2O (epoxide ring), alkyl-OH, -aryl-OH , -Cl, -OH, -R8-O-R9, -R8-O-CO-R9 or divalent bridging link to a moiety if-loxano additional lease selected from the group R8-, -R8-COO-R9-OOC- R8-, -R8-OOC-COO-R9-R8-, R7 = H rest, alkyl, acyl, acetyl or aryl, alkyl aryl or urethane divalent bridging link to an additional siloxane moiety selected from alkylene, -R COR9, - R8-O-R9-oR R8 = alkyl or aryl, R9 = alkyl or ar u = 0 to 5, v = 0 to 5, t = 0 to 15, w = 15 to 130, x = 0 up to 15, y = 0-15, z = 0-15, m = 0 to 4, a = = 0 to = 160, b = = 0 to = 140 c = = 0 to = 50, g = = 0 to = 50, d = = 0 to = 50 where a + b + c + d + g = 10, with the proviso that x + y + z + t = 3, and that at least one R1, R2, R3, R4, R5 substituent is a polyether according to formula II, wherein the weight ratio of the above components is selected such that the total weight ratio of components not exceeds 100% by weight, based flexible polyurethane Espas hot curing.