Novel process of reclaiming polyurethane foam

Details Novel process of reclaiming polyurethane foam Novel process of reclaiming polyurethane foam

1975-07-25

1976-09-28

Briggs, Sr., Wilbert J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AP, 260 775A, 260635R, C08J 1104

Patent

active

039830870

ABSTRACT:
A process is described for converting scrap flexible polyurethane foam, derived from a polyether polyol, to a homogeneous mixture of polyols which can be used, alone or as a blend with other polyols, in the preparation of polyurethane foams. The process comprises heating the scrap foam with not more than its own weight of an aliphatic diol which has at least one alkyl substituent in the alkylene chain, and which optionally contains an oxygen atom in the alkylene chain. The scrap flexible foam can contain up to about 75 percent of scrap rigid or semi-flexible foam, if desired.

REFERENCES:
patent: 3632530 (1972-01-01), Kinoshita
patent: 3738946 (1973-12-01), Frulla et al.

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