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:
Aug. 07, 1990
Filed:
Dec. 08, 1988
Applicant:
Inventors:
Giovanni Moggi, Milan, IT;
Giuseppe Marchionni, Milan, IT;
Assignee:
Ausimont S.r.l., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528392 ; 525185 ; 525539 ; 528397 ; 528425 ;
Abstract
By means of radicalic starters, fluoroolefins are polymerized in the presence of perfluoropolyethers containing, at one or at both ends, a bromine atom, in such amounts that the weight ratio between the perfluoropolyethers and the fluorinated olefins in the resulting product ranges from 4/1 to 1/50. The bromine-containing perfluoropolyethers utilized in the process have a molecular weight from 400 to 10,000, and preferably from 600 to 8,000. The resulting polymeric products comprise sequences of perfluoroolefinic units and perfluoropolyether blocks.