Polyurea foams made from N-(polyoxyalkyl)-N-(alkyl)amines

A process for the preparation of polyurea foams which process comprises:

• (a) forming a reaction mixture of an amine mixture and an organic isocyanate,
• (b) reacting the amine mixture with the organic isocyanate in the presence of a catalyst, water and a foam stabilizer, and
• (c) allowing the reaction mixture to rise and cure to form a polyurea foam wherein the amine mixture is of the general formula:
• ##STR13## wherein R represents an initiator radical based on a compound containing Zerewitinoff active hydrogen atoms;
• H represents a hydroxy-containing group fo the formula:
• ##STR14## P represents a primary amine-containing group of the formula:
• ##STR15## S represents a secondary amine-containing group of the formula:
• ##STR16## T represents a tertiary amine-containing group of the formula:
• ##STR17## a is 0 to 175;
• b is 0 to 175;
• c is 0 to 30;
• n is 1 to 3;
• the sum a+b+c must be greater than or equal to 2 when n equals 1;
• R' is an alkyl group containing from two carbon atoms to eighteen carbon atoms;
• R" is hydrogen or an alkyl group containing up to eighteen carbon atoms;
• R'" and R"" are independently alkyl groups containing from two to twelve carbon atoms;
• h is from 0 to 0.3;
• p is from 0 to 0.4;
• s is from 0.7 to 1.0;
• t is from 0 to 0.05;
• (hz) is the product of h and z;
• p+s+t=1;
• and
• z is 3 to 6.