The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 1991
Filed:
Aug. 15, 1989
Peter Spang, St. Ingbert, DE;
Peter Neumann, Mannheim, DE;
Gerhard Wagenblast, Frankenthal, DE;
Hubert Trauth, Dudenhofen, DE;
BASF Aktiengesellschaft, Ludwigshaften, DE;
Abstract
Compounds of the general formula (I) ##STR1## where R.sup.1 and R.sup.2 are each H, Cl, alkyl, alkoxy, substituted or unsubstituted phenyl or phenylalkyl, R.sup.3 and R.sup.4 are each H, alkyl, oxaalkyl, alkoxy, oxaalkoxy, substituted or unsubstituted phenyl, phenylalkyl, phenoxy, phenylalkoxy, alkylcarbonylamino, benzoylamino, alkanoyloxy or benzoyloxy, n is 1 or 2 and R.sup.5 is -- when n is 1-alkyl, hydroxyalkyl, cycloalkyl, alkenyl, oxaalkyl, phenylalkyl or ##STR2## or -- when n is 2-akylene, cycloalkylene, alkenylene, oxaalkylene or ##STR3## where m is from 2 to 4, R.sup.6 is alkyl, alkenyl, cycloalkyl, phenylalkyl, substituted or unsubstituted phenyl or naphthyl, and R.sup.7 is alkylene, alkenylene, cycloalkylene, substituted or unsubstituted phenylene, naphthylene, diphenylene, ##STR4## are effective light stabilizers for organic materials, in particular for polymers.