Method of preparing polyurea foam materials

Details Method of preparing polyurea foam materials Method of preparing polyurea foam materials

C - Chemistry, Metallurgy

08

J

403/50, 18/637

C08J 9/38 (2006.01) C08G 18/08 (2006.01) C08G 18/32 (2006.01) C08J 9/02 (2006.01)

Patent

CA 1136800

ABSTRACT The present invention provides a method to improve the rupture stability of polyurea foam materials to such a level that they can be applied on a commercial scale. This is achieved by incorporating 0.5 to 50 parts by weight of at least one alkanol- amine having at least one amino group, one hydroxyl group and a molecular weight of from 47 to 2000 per 100 parts by weight of polyisocyanate used for the preparation of said polyurea foam materials. Preferably the foam material prepared is cut into pieces by cutting it in the rise direction, more particularly in the rise direction that is perpendicular to the machine direction of the foam, and subsequently crushing said pieces at least once.

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