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:
Sep. 12, 1978
Filed:
Jul. 21, 1975
Applicant:
Inventors:
Richard J Lagow, Manchester, MA (US);
Shoji Inoue, Tsuda-machi, Kodaira, Tokyo 187, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562583 ;
Abstract
A method is disclosed for producing perfluoroether oligomers having terminal carboxylic acid groups. In this method, a polyether, such as polyethylene oxide, having a molecular weight higher than the product to be produced is fluorinated in a direct fluorination apparatus. The polyether is fragmented during fluorination and significant yields of the desired oligomer are obtained.