Ultraviolet-asborbing polymer film

Details Ultraviolet-asborbing polymer film Ultraviolet-asborbing polymer film

1996-03-06

1998-09-15

Tucker, Philip

Compositions

Light transmission modifying compositions

Ultraviolet

F21V 904

Patent

active

058068341

ABSTRACT:
An ultraviolet-absorbing polymer film consists of a polymer and ultraviolet absorbers contained therein. The ultraviolet absorbers are composed of a compound having the formula (I): ##STR1## wherein each of R.sup.1 and R.sup.2 represents hydrogen, alkyl of 1 to 10 carbon atoms which may be substituted with phenyl, each of R.sup.3, R.sup.4 and R.sup.5 represents hydrogen, phenyl or alkyl of 1 to 5 carbon atoms, and each of X and Y represents cyano, --COOR, --CONHR, COR, --SO.sub.2 R or --SO.sub.2 NHR (R represents hydrogen, alkyl or aryl), or R.sup.1 and R.sup.2 or R.sup.1 and R.sup.3 are linked each other to form a 5 or 6-membered ring; and at least one other compound capable of abosorbing light in a portion of ultraviolet region in which the ultraviolet absorber of the formula (I) cannot absorb.

REFERENCES:
patent: 4045229 (1977-08-01), Weber et al.
patent: 4307184 (1981-12-01), Beretta et al.
patent: 4576908 (1986-03-01), Vallarino
patent: 4946768 (1990-08-01), Vallarino
patent: 5385815 (1995-01-01), Schofield et al.

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