Patent ID: 8030366
Filing Date: 2011-10-04
Classification: C08G,C08J,C08L

Abstract:
1. A method of stabilizing a foam which comprises adding polyethers containing urethane or urea groups as foam stabilizers during the process of making the foam, wherein the polyethers containing urethane or urea groups is obtained by reacting A. at least one isocyanate with B. (a) at least one hydrophilic polyether which statistically carries at least one OH and/or NH  (b) at least one hydrophobic polyether which statistically carries at least one OH and/or NH  (c) further compounds which carry at least one OH and/or NH with the proviso that at least one isocyanate A is ≧difunctional; wherein at least one polyether of the general formula (I) in which, R R E is an ethoxy function, P are identical or different alkoxy function(s) having at least three carbon atoms, R R a is 0or 1, b is 1, 2 or 3, c is from 10 to 500, d is from 0 to 330, e is from 1 to 10, f is from 2 to 5, with the proviso that c>0.6 (c+d), is used as component a).