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:
Nov. 08, 1994
Filed:
May. 27, 1993
Applicant:
Inventors:
William E Leistner, Atlantic Beach, NY (US);
Semyon Moshchitsky, Old Bridge, NJ (US);
Assignee:
Fairmount Chemical Company, Inc., Newark, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548260 ; 548259 ;
Abstract
Provided are ultraviolet stabilizers which are diphenylmethane compounds of the formula: ##STR1## wherein: R.sub.1 and R.sub.2 are independently C.sub.1 to C.sub.8 alkyl, cyclopentyl, cyclohexyl or cumyl; and X is selected from the group consisting of hydrogen, halogen, C.sub.1 to C.sub.12 alkyl and C.sub.1 to C.sub.12 alkoxy. The invention also pertains to a process for their preparation and stabilized polymer blends containing the stabilizers.