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. 08, 1980
Filed:
Jun. 16, 1978
Applicant:
Inventors:
Ellis K Fields, River Forest, IL (US);
Steven A Cerefice, Naperville, IL (US);
Edward E Paschke, Glen Ellyn, IL (US);
Assignee:
Standard Oil Company (Indiana), Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528361 ; 204 / ;
Abstract
Highly-purified monomers for poly(p-methylenebenzoate) polymers and poly(m-methylenebenzoate) polymers are prepared by purifying acetoxylated hydroxymethylbenzoic acid compounds derived by side-chain acetoxylation of toluic acid compounds. The purification process can be by recrystallation or by fractional distillation.