Furan-modified isocyanurate foams

Details Furan-modified isocyanurate foams Furan-modified isocyanurate foams

1974-12-19

1980-11-04

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521119, 521120, 521121, 521123, 521130, 521137, 521158, 521173, 521174, C08G 1814

Patent

active

042321271

ABSTRACT:
Furan-modified rigid isocyanurate foams are taught herein. The foams herein are prepared by either (1) the in situ polymerization of furfuryl alcohol and/or furfural during the foam formation reaction, or (2) the catalytic condensation of a furfuryl alcohol-blocked organic polyisocyanate.

REFERENCES:
patent: 3509103 (1970-04-01), Teague
patent: 3645979 (1972-02-01), Liebsch
patent: 3894972 (1975-07-01), Narayan
patent: 3922238 (1975-11-01), Narayan
Baker, "Preparation and Properties of Carbon Foam", Journal of Cellular Plastics, Nov./Dec. 1971, pp. 294-301.

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