Polyurethane foam of increased rigidity

Details Polyurethane foam of increased rigidity Polyurethane foam of increased rigidity

1976-07-06

1978-04-04

Ivy, C. Warren

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25BE, 264321, 428315, 428425, 427373, C08G 1814, C08J 942

Patent

active

040827046

ABSTRACT:
The invention provides a polyurethane foam of increased rigidity.
The invention is provided by impregnating a flexible polyurethane foam with a thermosetting melamine, urea or benzoguanamine resin and a cross-linker, and then reacting the resin with the cross-linker.

REFERENCES:
patent: 3193437 (1965-07-01), Schafer
patent: 3193438 (1965-07-01), Schafer
patent: 3193441 (1965-07-01), Schafer
patent: 3269887 (1966-08-01), Windecker
patent: 3400196 (1968-09-01), Le Roy
patent: 3720574 (1973-03-01), Kunc
patent: 3862291 (1975-01-01), Brandon
patent: 3915783 (1975-10-01), Goppel
patent: 3930919 (1976-01-01), Chant
patent: 3944704 (1976-03-01), Dirks
patent: 4000097 (1976-12-01), Chant
patent: 4042746 (1977-08-01), Hofer
patent: 4042751 (1977-08-01), Roth
Lee & Neville, Handbook of Epoxy Resins; McGraw-Hill; N.Y. 1967.

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