Polyurethane foam reconstitution

Details Polyurethane foam reconstitution Polyurethane foam reconstitution

1973-12-10

1977-08-09

Ivy, C. Warren

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AD, 260 23, 53111RC, 427140, 427235, 427239, 427400, C08G 1814, B64C 334

Patent

active

040409910

ABSTRACT:
This application describes a method of rejuvenating reticulated polyurethane materials, particularly those containing ester-type linkages which have been hydrolyzed after being exposed to moisture containing hydrocarbon fuel and/or highly humid environments. The process consists of treating the polyurethane with cross-linking compounds, such as diisocyanates and polyfunctional epoxy compounds.

REFERENCES:
patent: 2729618 (1956-01-01), Muller
patent: 2955056 (1960-10-01), Knox
patent: 3050414 (1962-08-01), Reilly
patent: 3171826 (1965-03-01), Volz
patent: 3193426 (1965-07-01), Schafer
patent: 3193441 (1965-07-01), Schafer
patent: 3298857 (1967-01-01), Terry
patent: 3326861 (1967-06-01), Sandridge
patent: 3475383 (1969-10-01), Stewart
patent: 3616189 (1971-10-01), Harr
patent: 3738946 (1973-06-01), Frulla
patent: 3752695 (1973-08-01), Finelli
Lee & Neville, Epoxy Resins, McGraw-Hill, NY 1957, p. 8.

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