Manufacture of phenolic foam

Details Manufacture of phenolic foam Manufacture of phenolic foam

1975-07-11

1978-01-31

Foelak, Morton

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25B, 260 25E, 260 57R, C08J 910

Patent

active

040714810

ABSTRACT:
Phenolic foams, mixtures for producing phenolic foams, and processes of manufacturing phenolic foams are disclosed. The resin utilized is a base catalyzed polycondensation product of phenol and formaldehyde which is obtained in a solid, reactive, fusible, substantially anhydrous state. The resin is foamed and hardened by the application of heat without the use of a catalyst. Heat sensitive blowing agents, either in liquid form or in particulate form may be mixed with the resin prior to heating. Surfactants and lubricants may be utilized to enhance the uniformity of the voids in the foam. The resulting foams are non-acidic, are resistant to color changes, and are substantially anhydrous.

REFERENCES:
patent: RE27927 (1974-02-01), Jablonski
patent: 2608536 (1952-08-01), Sterling
patent: 2629698 (1953-02-01), Sterling
patent: 2653139 (1953-09-01), Sterling
patent: 2728741 (1955-12-01), Simon
patent: 2797443 (1957-07-01), Carlson, Jr.
patent: 2857341 (1958-10-01), Colwell et al.
patent: 2933461 (1960-04-01), Mullen
patent: 2945828 (1960-07-01), Henning
patent: 3267048 (1966-08-01), Horste et al.
patent: 3271331 (1966-09-01), Ender
patent: 3300419 (1967-01-01), Erickson
"Phenolic Resins," by Whitehouse et al., pp. 120, 123 and 124, London 1967.

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