Process for decomposition of polyurethane foam

Details Process for decomposition of polyurethane foam Process for decomposition of polyurethane foam

1975-09-15

1977-08-02

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 23, 260 775AP, 260471C, 260475P, 260568, 260621M, 260632R, C87, C87

Patent

active

040395685

ABSTRACT:
A process for decomposing a polyurethane foam comprising heating the polyurethane foam at a temperature of about 50.degree. to 180.degree. C in the presence of an alcoholate alone, an alcoholate and an alkali hydroxide; or a combination of an alcoholate, or the alcoholate and alkali hydroxide and a decomposition accelerator, where the alcoholate is produced by alcoholating a part of the hydroxyl groups of an alcohol, or a part of the hydroxyl groups of an adduct of the alcohol or amine and an alkylene oxide, with an alkali metal, and the decomposition accelerator is selected from the group consisting of amines such as straight chain aliphatic amines, branched chain aliphatic amines, alicyclic amines, heterocyclic amines, and aromatic amines; those compounds produced by cyanoethylating the above amines or by partly adding an alkylene oxide to the above amines; and amines and urea based compounds, or in the presence of the alcoholate, decomposition accelerator, and an alkali hydroxide.

REFERENCES:
patent: 2937151 (1960-05-01), Broeck et al.
patent: 3117940 (1964-01-01), McElroy
patent: 3123577 (1964-03-01), Heiss
patent: 3300417 (1967-01-01), McElroy
patent: 3404103 (1968-10-01), Matsudaira et al.
patent: 3441616 (1969-04-01), Pizzini et al.
patent: 3632530 (1972-01-01), Kinoshita
patent: 3708440 (1973-01-01), Frulla et al.

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