Ultraviolet-asborbing polymer film
US5806834A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Mar 6, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0008
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.