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. 06, 1991
Filed:
Nov. 17, 1989
Claudio Monti, Milan, IT;
Ausimont S.r.l., Milan, IT;
Abstract
The present invention relates to a process for preparing copolymers of tetrafluoroethylene with ethylene, and optionally with a third monomer, of vinylic character. The process is characterized in that tetrafluoroethylene is caused to react with ethylene and with the optional third, vinylic, monomer in an aqueous emulsion with the aid of a polymerization initiator of peroxy type, at a temperature within the range between 30.degree. and 95.degree. C. and under a pressure within the range of from 1.5 to 4.0 MPa, in the presence of tert.-butyl alcohol and of 1,1,2,2-tetrachloro-1,2-difluoroethane.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile