Polyurethanes stabilized against ultraviolet light and nitrogen

Details Polyurethanes stabilized against ultraviolet light and nitrogen Polyurethanes stabilized against ultraviolet light and nitrogen

1976-05-26

1978-12-19

Cockeram, H. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 292TN, 260 458NT, 260 4585T, 260 4595C, 260 4595H, 260 4595R, 528 67, C08K 529, C08K 513, C08L 7504

Patent

active

041305426

ABSTRACT:
A polyurethane polymer stabilized against the deteriorative effects of ultraviolet light and nitrogen oxides which comprises a polyurethane polymer and a stabilizing amount of an aliphatic or cycloaliphatic monoisocyanate or diisocyanate, said polyurethane polymer comprising an isocyanate terminated prepolymer obtained by reacting a polyether or a polyester with an excess of an aromatic diisocyanate, forming an emulsion thereof and subsequently chain-extending the prepolymer with water.

REFERENCES:
patent: 3444843 (1969-05-01), Keberle et al.
patent: 3706710 (1972-12-01), Camilleri et al.
patent: 3715326 (1973-02-01), Traubel et al.

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