Protection from ultraviolet light by use of novel ultraviolet ab

Details Protection from ultraviolet light by use of novel ultraviolet ab Protection from ultraviolet light by use of novel ultraviolet ab

1982-06-16

1984-05-01

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 87, 524 90, C08K 535

Patent

active

044462620

ABSTRACT:
A photo-stabilized polymer composition comprising a polymer and as an ultraviolet absorber, at least one compound selected from specific cyclic imino esters having an aromatic nucleus, two carbon atoms of which forms a part of the imino ester ring, such as 2,2'-p-phenylene-bis(3,1-benzoxazin-4-one), or 2,8-dimethyl-4H,6H-benzo[1,2-d:5,4-d']bis-[1,3]-oxazine-4,6-dione, in the unreacted state. The ultraviolet absorber has excellent stability to heat and oxidation, and is useful, for example, for protecting from ultraviolet light a molded article of a polymer whose deterioration by ultraviolet light is required to be retarded or prevented or for protecting from ultraviolet light an object subject to deleterious effects under ultraviolet light.

REFERENCES:
patent: 3325445 (1967-06-01), Harris et al.
patent: 3497512 (1970-02-01), Hofer et al.
patent: 3644345 (1972-02-01), Siegrist et al.
patent: 3971757 (1976-07-01), Rasberger
patent: 4291152 (1981-09-01), Inata et al.

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