Method of making cured aminoplast foam

Details Method of making cured aminoplast foam Method of making cured aminoplast foam

1978-12-04

1980-11-18

Schain, Howard E.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521187, C08G 1212, C08G 1214

Patent

active

042346983

ABSTRACT:
A method of making a cured foamed amino formaldehyde product utilizes an amino formaldehyde precondensate of water content below 20% by weight in order to obtain a less brittle product. A liquid foamable composition is made by dispersing a curing catalyst and a blowing agent in the precondensate and the composition is heated to cause the blowing agent to form a foam and the precondensate to cure.

REFERENCES:
patent: 2789095 (1957-04-01), Lindvig
patent: 2807595 (1957-09-01), Brown
patent: 3975318 (1976-08-01), Larsen et al.
patent: 3975319 (1976-08-01), Larsen et al.
patent: 4026980 (1977-05-01), Hubbard
patent: 4035456 (1977-07-01), Hubbard et al.
patent: 4069175 (1978-01-01), Moore

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