Method of producing polyurea foams

Details Method of producing polyurea foams Method of producing polyurea foams

1979-10-25

1980-11-18

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521110, 521112, 521128, 521163, C08J 902

Patent

active

042346959

ABSTRACT:
A method of producing polyurea foams is disclosed. The polyurea foam is produced by reacting an organic polyisocyanate with water in the presence of urea or by reacting a crude tolylene diisocyanate or a mixture of crude tolylene diisocyanate and crude diphenylmethane diisocyanate as an organic polyisocyanate with water in the presence of an amine catalyst, a silicone surfactant and, if necessary, a tin catalyst.

REFERENCES:
patent: 3143517 (1964-08-01), Heiss
patent: 3563957 (1971-02-01), Beebe
patent: 3717597 (1973-02-01), Hesskamp et al.

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