USE OF AQUEOUS POLYURETHANE HOT SOFT FOAM STABILIZING SOLUTIONS OF LOW VISCOSITY HAVING POLYETHER SILOXANE IN THE PRODUCTION OF POLYURETHANE HOT SOFT FOAMS.

摘要

The object of the present invention relates to aqueous polyurethane hot soft foam stabilizing solutions of low viscosity that can be used in the production of polyurethane hot soft foams, wherein the aqueous polyurethane hot soft foam stabilizing solution of low viscosity comprises the following components ⿥ 40% by weight to ⿤ 70% by weight polyether siloxane, ⿥ 0,5% by weight to ⿤ 20% by weight organic surfactant, ⿥ 10% by weight water, ⿥ 0% by weight organic solvent additives, wherein the polyurethane siloxane has the following formula (I): R1-Si(CH3)2O-[Si(CH3)(OSi(CH3)2R0)O-]u- [Si(OSi(CH3)2R0)2O-] v-[Si(CH3)2O-]w-[SiC H3R2O- ]x-[SiCH3R3O-] y-[SiCH3R4O]z-[SiR< sup>3R4O]t-Si(CH3)2< /sub>-R5, wherein R0= -O-[Si(CH3)2O-]w-[SiCH3R2O-]x-[SiCH3R3O -] y-[SiCH3R4O]z-Si(CH 3)2-R5; R1, R2, R3, R4 and R5 = each represent equally or differently from each other an alkyl or aryl residue of 1 to 12 carbon atoms, or each -CH2-R6 oder -CH2-CH2-R6 or polyalkylene oxide polyether of the formula (II), -CmH2mO(C2H4O) a(C3H6O)b(C4H< sub>8O)c(C6H5-C2H3O)d(C12H24O)_{gR7, R6 = H, -C6H5, -CN, -Alkyl with C1 to C10, -CH-CH2O (epoxy ring), -Alkyl-OH, -Aryl-OH, -Cl, - OH, -R8-O-R9, -R8-O-CO-R9 or a divalent binding link to a further siloxane residue, selected from the group of alkylene, -R8-O-R9-, -R8-COO-R9, - R8-O-R9-O-R8-, - R8-COO-R9-OOC-R8-, -R8-OOC-R9-COO-R8-, R7 = H, alkyl-, acyl-, acetyl- or aryl residue, alkyl- or aryl urethane group, or a divalent binding link to a further siloxane residue, selected from the group of alkylene, -R8- O-R9-, -R8-COO-R9, - R8-O-R9-O-R8-, -R8-COO-R9-OOC-R8-, -R8-OOC-R9-COO-R8-, R8 = alkyl- or aryl-; R9 = alkyl- or aryl-; u = 0 to 5; v = 0 to 5; t = 0 to 15; w = 15 to 130; x = 0 to 15; y = 0 to 15; z = 0 to 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, wherein a + b + c + d + g ⿥10; provided that x + y + z + t ⿥ 3, and that at least one substituent R1, R2, R3, R4, R5 represents a polyether according to formula (II), wherein the proportion by weight of the above stated components is selected such that the total proportion by weight of the components does not exceed 100% by weight, based on the polyurethane hot soft foam stabilizing solution.}