UV-absorbing condensation polymeric compositions and products therefrom
US4617374A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1986 |
| Grant date | Oct 14, 1986 |
| Priority date | — |
| Expiry date | Jan 28, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/6888
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyester compositions useful in formed articles such as beverage bottles and having condensation reacted therein at least one UV-absorbing compound of the formula ##STR1## wherein: R is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, cycloalkyl, substituted cycloalkyl, or alkenyl; PA1 R.sup.1 is hydrogen, or alkyl, aryl, or cycloalkyl, all of which may be substituted; PA1 R.sup.2 is hydrogen, or alkyl, cycloalkyl or aryl, all of which may be substituted; PA1 R.sup.3 is hydrogen or 1-3 substituents; and PA1 P is cyano or a group such as carbamoyl, aryl, alkylsulfonyl, arylsulfonyl, alkanoyl or aroyl, all of which groups may be substituted; PA1 whereby the polyester composition has maximum light radiation absorbance within the range of from about 320 nm to about 380 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.