Color stabilized polyurethanes

Details Color stabilized polyurethanes Color stabilized polyurethanes

1975-05-14

1976-08-31

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 458NT, 260 459NN, 526312, C08L 7504

Patent

active

039781569

ABSTRACT:
Polyurethanes exposed to degradative atmospheric conditions, particularly ultraviolet light, have improved resistance to such degradation when the polyurethanes contain small amounts of polymeric hydrazide, a phenolic stabilizer and an ultraviolet absorber in combination.

REFERENCES:
patent: 3305533 (1967-02-01), Thoma
patent: 3432456 (1969-03-01), Oertel
patent: 3554962 (1971-01-01), Fischer
patent: 3560432 (1971-02-01), Briggs
patent: 3630987 (1971-12-01), Thoma
patent: 3640937 (1972-02-01), Thoma
patent: 3644482 (1972-02-01), Dexter
patent: 3929726 (1975-12-01), Schollenberger

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