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:
Oct. 02, 1984
Filed:
May. 27, 1982
Applicant:
Inventor:
Lester P Burton, Pleasant Ridge, MI (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
C07F / ; C07F / ;
U.S. Cl.
CPC ...
524152 ; 260930 ; 260953 ; 524101 ; 524128 ; 252 498 ;
Abstract
Phenolic-phosphite antioxidants for use alone in polyolefins or in admixture with synergists, phenolic/phosphite antioxidants, and the like. The adduct formed by reacting a phosphorus trihalide, preferably PCl.sub.3, with 1,3,5-trimethyl-2,4,6-tris(3',5'-di-tert-butyl-4'-hydroxybenzyl)benzene, e.g., is useful for antioxidant activity in organic materials. Various other phenolic adducts also show antioxidant activity. The adducts are formed by reacting PCl.sub.3, e.g., with a large phenolic compound having three or more phenolic moieties. The adducts contain components which are noncyclic with respect to phosphite moieties.