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. 07, 1976
Filed:
Feb. 24, 1975
Applicant:
Inventors:
James A Dale, Menlo Park, CA (US);
Patricia C Wang, Palo Alto, CA (US);
Assignee:
Dynapol Corporation, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C08F / ;
U.S. Cl.
CPC ...
252404 ; 260 / ; 260 / ; 260 62 ;
Abstract
Hydroquinonoid polymers having n recurring units of the General Structural Formula ##STR1## wherein n is 3 or greater, X and X' independently are hydrogen or methyl, R is a lower hydrocarbon, and R' and R' independently are lower hydrocarbons or hydrogens are disclosed as well as such polymers additionally containing phenolic copolymerizates. The preparation of these polymers by the one step copolymerization of a diolefinic hydrocarbon, a hydroquinonoid and optionally a phenolic, in the presence of an ortho-alkylation catalyst, and the use of these polymers as antioxidants, especially for foodstuffs, is also disclosed.