Method of making a low-friability, thermosetting foam

Details Method of making a low-friability, thermosetting foam Method of making a low-friability, thermosetting foam

1981-02-26

1982-09-21

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521121, 521136, 521149, 521181, C08J 914

Patent

active

043507760

ABSTRACT:
A low-friability, flame-retardant, thermosetting foam product is prepared by reacting, in the presence of a blowing agent and a strong acid catalyst, a furfuryl-alcohol polymer and a phenol-formaldehyde resin, having a mole ratio of phenol to formaldehyde of from about 1:1.2 to 1:2.0, which reaction provides a low-friability, flame-retardant, thermosetting foam product.

REFERENCES:
patent: 3692706 (1972-09-01), Igglesden
patent: 3919127 (1975-11-01), Larsen et al.
patent: 3975319 (1976-08-01), Larsen et al.

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