Patent ID: 8349907

Claim:
A method of stabilizing foam, comprising: utilizing a foam stabilizer of the general formula (I) in a preparation of a polyurethane foam, the general formula (I) being represented by: wherein n is 0-500; wherein m is 1-60; wherein o is 0-60; wherein k is 0-10; wherein R may be a linear, cyclic, or branched, aliphatic or aromatic, saturated or unsaturated hydrocarbon radical having 1 to 20 C atoms, which may contain heteroatoms; wherein R 1 is R, R 2 , or R 3 ; wherein R 2 is CH 2 —CH 2 —CH 2 —O—(CH 2 —CH 2 O—) x —(CH 2 —CH(R″)O—) y —C(O)R′, in which R′ represents the alkyl radical derived from monobasic fatty acids based on natural vegetable or animal oils having 6-30 carbon atoms; wherein R 3 is one of: CH 2 —CH 2 —CH 2 —O—(CH 2 CH 2 O—) x —(CH 2 —CH(R″)O—) y —R′″; CH 2 —CH 2 —CH 2 —O—(CH 2 —CH 2 O—) x —(CH 2 —CH(R″)O—) y —R′″; CH 2 —CH 2 —CH 2 —O—(CH 2 —CH 2 O—) x —(CH 2 —CH(R″)O—) y —(SO) z —R′″; CH 2 —R IV ; CH 2 —CH 2 —(O) x , —R IV ; CH 2 —CH 2 —CH 2 —O—CH 2 —CH(OH)—CH 2 OH; CH 2 —CH 2 —CH 2 —O—CH 2 —C(CH 2 OH) 2 —CH 2 —CH 3 ; wherein: x is 0 to 100; x′ is 0 or 1; y is 0 to 100; z is 0 to 100; R″ is an optionally substituted alkyl group having 1 to 4 C atoms; R′″ denotes a hydrogen radical, an alkyl group having 1 to 4 C atoms, the group —C(O)—R″, an alkylaryl group, or the group —C(O)NH—R′; R IV denotes an optionally substituted, optionally halogen-substituted, hydrocarbon radical having 1 to 50 C atoms; and SO denotes the radical —CH(C 6 H 5 )—CH 2 —O—.