Modified phenolic foam catalysts and method

Details Modified phenolic foam catalysts and method Modified phenolic foam catalysts and method

1989-02-09

1989-11-28

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

25218224, 502169, 502172, 521 97, 521117, 521130, 521181, C08J 914

Patent

active

048838241

ABSTRACT:
The invention relates to the preparation of closed cell phenolic resin foams produced from compositions of phenol-aldehyde resole resins, and the foam products thus prepared. More particularly the present invention relates to the preparation of phenolic resin foams by a method employing a novel modified phenolic foam catalyst. The invention also relates to these modified phenolic foam catalysts which include an aromatic sulphonic acid and resorcinol.

REFERENCES:
patent: 3907723 (1975-09-01), Pretot
patent: 4396563 (1983-08-01), Gusmer
patent: 4478958 (1984-10-01), Carlson et al.
patent: 4525492 (1985-06-01), Rastall et al.
patent: 4530939 (1985-07-01), Rickle
patent: 4546119 (1985-10-01), Lunt et al.

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