Sprayable, foam-forming, phenolic resin compostion, method of sp

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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521 92, 521131, 521181, C08J 930

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active

056936842

ABSTRACT:
A sprayable, foam-forming, phenolic resin composition having the combination of properties of:
(i) a viscosity suitable for spraying,
(ii) a cure rate suitable for spraying to prevent running or sagging of sprayed foam,
(iii) which when suitably cured provides a foam having a high temperature resistance, and
(iv) the cured foam produces substantially non-toxic fumes when burned. The sprayable, foam-forming, phenolic resin composition is made from a phenol-aldehyde resin; optionally a phenol compound; a catalyst for catalyzing a curing reaction of said phenol-aldehyde resin; and a gas-generating compound which generates a gas during said curing reaction of said phenol-aldehyde resin. The invention also provides a method for making a phenolic-resin foam layer and a sprayed phenolic-resin foam layer.

REFERENCES:
patent: 4207400 (1980-06-01), Dahms
patent: 4207401 (1980-06-01), Dahms
patent: 4303758 (1981-12-01), Gusmer

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