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:
Jan. 25, 1994
Filed:
Jul. 24, 1992
Applicant:
Inventors:
Philippe Chicart, Sainte-Marine, FR;
Michel Gay, Villeurbanne, FR;
Assignee:
Rhone-Poulenc Chimie, Courbevoie, FR;
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
524291 ; 524296 ; 524299 ; 524336 ; 524337 ; 560 84 ; 560 85 ; 560127 ; 560193 ; 560221 ;
Abstract
The present invention relates to new hydroxybenzophenones containing an ester functional group and to the use of these compounds as UV absorbers in organic polymers. More precisely, the new hydroxybenzophenones are 1,3-di(4-benzoyl-3-hydroxyphenoxy)-2-propanol carboxylates which preferably have a molecular mass of at least 500. These benzophenones can be employed as anti-UV agents in organic polymers, either by themselves or jointly with known benzophenones of lower molecular mass, such as 2-hydroxy-4-alkoxybenzophenones.