Aqueous solution and low viscosity, flexible, heat-curable polyurethane foam stabilizer, its use, heat-curable flexible polyurethane foam, and its product

摘要

the use of low viscosity aqueous soft polyurethane foam stabilizers containing polyether siloxanes in the preparation of hot soft polyurethane foams. The invention relates to a low viscosity aqueous stabilizing solution of hot polyurethane soft foam for use in the preparation of hot soft polyurethane foams, the solution comprising the following components: up to 40% or less 70% by weight of polyether siloxane, greater than or equal to 0,5% to less than or equal to 20% by weight of organic surfactant, greater than or equal to 10% by weight of organic solvent additives, the polyether siloxane having the formula (i ): r1-si (ch3) 2o- [si (ch3) (osi (ch3) 2r0) o-] u- [si (osi (ch3) 2r0) 2o-] v- [si (ch3) 2o-] w - [sich3r2o-] x- [sich3r3o-] y- [sich3r4o] z- [sir3r4o] t-si (ch3) 2-r5 (i) where r0 = -o- [si (ch3) 2o-] w- [sich3r2o-] x- [sich3r3o-] y- [sich3r4o] z-si (ch3) 2 -r5; R 1, R 2, R 3, R 4 and R 5 which are the same or different from each other, respectively, represent an aryl or aryl radical of 1 to 12 carbon atoms or respectively -ch2-r6 or -ch2-ch2-r6 or polyalkylene polyether oxide of formula ( ii) .......