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:
Dec. 11, 1984
Filed:
Sep. 08, 1983
Applicant:
Inventors:
Richard F Miller, Humble, TX (US);
Michael P Nicholson, Houston, TX (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585-4 ; 585-5 ; 585441 ; 585864 ; 585952 ; 544 35 ; 544 37 ;
Abstract
Vinyl aromatic compounds are stabilized against undesired polymerization by adding to the vinyl aromatic compounds small amounts of at least one N,N' dimer of phenothiazine or a substituted phenothiazine and at least one mono- or ditertiary alkylphenol.