UV-absorbing condensation polymeric compositions and products therefrom

A polyester composition having a maximum light absorbance within the range of from about 320 nm to about 380 nm and having reacted therein a total of from about 1.0 to about 5,000 parts by weight per million parts by weight of polyester of at least one UV-absorbing compound of the formula ##STR27## which is nonextractable from the polyester and stable under the polyester processing conditions, wherein:

• R is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, cycloalkyl, substituted cycloalkyl, or alkenyl;
• R.sup.1 is hydrogen, or alkyl, aryl, or cycloalkyl, all of which may be substituted;
• R.sup.2 is hydrogen or any radical which does not interfere with condensation with the polyester;
• R.sup.3 is hydrogen or 1-3 substituents selected from alkyl, substituted alkyl, alkoxy, substituted alkoxy, and halogen;
• and
• P is cyano or a group selected from carbamyl, aryl, alkylsulfonyl, arylsulfonyl, heterocyclic, alkanoyl or aroyl, all of which groups may be substituted.