Process of making a cured resole foam and product produced there

Details Process of making a cured resole foam and product produced there Process of making a cured resole foam and product produced there

1977-02-22

1978-02-21

Foelak, Morton

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25FP, 260 457P, 260 59R, 260DIG24, C08J 914

Patent

active

040751392

ABSTRACT:
Phenolic foams are disclosed which are obtained by conventional procedures from phenol-aldehyde resole resins and novel premixed catalyst combinations comprising (a) a phosphonate compound ##STR1## wherein R, R.sub.1 and R.sub.2 are independently selected from the class consisting of alkyl having from 1 to 8 carbon atoms, inclusive, aryl having from 6 to 12 carbon atoms, inclusive, and aralkyl having from 7 to 13 carbon atoms, inclusive; and (b) an aromatic sulfonic acid. The foams are characterized as non-punking, fire resistant, and fine celled foams which can be prepared at room temperature (about 20.degree. C) in thick sections without splitting or cracking. Furthermore, the foams do not require a heat curing treatment in order to achieve a thermoset state.

REFERENCES:
patent: 3377317 (1968-04-01), Hoxie
patent: 3673130 (1972-06-01), Papa et al.
patent: 3953645 (1976-04-01), Moss
patent: 3998789 (1976-12-01), Yoshioka

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