Low-density, furfuryl benzylic phenolic thermosetting foam produ

Details Low-density, furfuryl benzylic phenolic thermosetting foam produ Low-density, furfuryl benzylic phenolic thermosetting foam produ

1981-12-14

1982-10-12

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

043539947

ABSTRACT:
A low-density, low-friability, furfuryl-phenol thermosetting foam product is prepared by reacting, in the presence of a blowing agent and an acid catalyst, a furfuryl-alcohol monomer or polymer and a benzylic-ether phenol-formaldehyde resin, having a mole ratio of benzylic-ether phenol to formaldehyde of from about 1:3 to 1:11, which reaction provides a closed-cell, thermosetting foam product having a foam density of 0.5 pound per cubic foot or less.

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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