Ultraviolet light absorbing agents and compositions and articles

Details Ultraviolet light absorbing agents and compositions and articles Ultraviolet light absorbing agents and compositions and articles

1981-12-09

1983-01-18

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of polycarbonate

428331, 428411, 428447, 524188, B32B 2718, C07F 710

Patent

active

043692281

ABSTRACT:
There are provided ultraviolet light absorbing agents of the formula ##STR1## wherein: X is >C.dbd.O, or ##STR2## Y is H or OH; Z is H, OH, OQ or OW, where at least one Z is OH if Y is H;

REFERENCES:
patent: 3629165 (1971-12-01), Holdstock
patent: 3708225 (1973-01-01), Misch et al.
patent: 3829455 (1974-08-01), Wilkus
patent: 3976497 (1976-08-01), Clark
patent: 3986997 (1976-10-01), Clark
patent: 4051161 (1977-09-01), Proskow
patent: 4088670 (1978-05-01), Bargain
patent: 4122233 (1978-10-01), Proskow
patent: 4177315 (1979-12-01), Ubersax
patent: 4188451 (1980-02-01), Humphrey, Jr.
patent: 4213914 (1980-07-01), Bargain
patent: 4278804 (1981-07-01), Ashby et al.

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