| 摘要 |
The object of the present invention relates to aqueous polyurethane hot s oft foam stabilizing solutions of low viscosity that can be used in the prod uction of polyurethane hot soft foams, wherein the aqueous polyurethane hot soft foam stabilizing solution of low viscosity comprises the following comp onents >= 40% by weight to <= 70% by weight polyether siloxane, >= 0,5% by weight to <= 20% by weight organic surfactant, >= 10% by weigh t water, >= 0% by weight organic solvent additives, wherein the polyureth ane siloxane has the following formula (I): R1-Si(CH3)2O-[Si(CH3)(OSi(CH3)2R 0)O-]u-[Si(OSi(CH3)2R0)2O-]v-[Si(CH3)2O-]w-[SiCH3R2O- ]x-[SiCH3R3O-] y-[SiCH 3R4O]z-[SiR3R4O]t-Si(CH3)2-R5, wherein R0= -O-[Si(CH3)2O-]w-[SiCH3R2O-]x-[Si CH3R3O-] y-[SiCH3R4O]z-Si(CH3)2-R5; R1, R2, R3, R4 and R5 = each represent e qually or differently from each other an alkyl or aryl residue of 1 to 12 ca rbon atoms, or each -CH2-R6 oder -CH2-CH2-R6 or polyalkylene oxide polyether of the formula (II), -CmH2mO(C2H4O)a(C3H6O)b(C4H8O)c(C6H5-C2H3O)d(C12H24O)g R7, 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 t o 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, o r a divalent binding link to a further siloxane residue, selected from the g roup 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 t o 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 leas t one substituent R1, R2, R3, R4, R5 represents a polyether according to for mula (II), wherein the proportion by weight of the above stated components i s selected such that the total proportion by weight of the components does n ot exceed 100% by weight, based on the polyurethane hot soft foam stabilizin g solution.
|
