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:
Oct. 19, 1976
Filed:
Apr. 24, 1974
Fritz Englander, Bonn-Bad Godesberg, DT;
Gunther Meyer, Troisdorf-Sieglar, DT;
Dynamit Nobel Aktiengesellschaft, Troisdorf, DT;
Abstract
Vinyl fluoride having an impurities content of less than 100 parts per million; a method of preparing vinyl fluoride with an impurities content of less than 100 parts per million which comprises contacting gaseous vinyl fluoride with a finely divided copper containing catalyst composition at a temperature of between 0.degree. and 100.degree. C.; a polyvinyl fluoride organosol having an organosol viscosity, determined in a 40 wt.% suspension in propylene carbonate of 20 to 100 cP; a method of producing a polyvinyl fluoride which when suspended in a suspension in polypropylene carbonate in an amount of 40 wt.% has an organosol viscosity of about 20 to 100 cP. which comprises heating vinyl fluoride in an aqueous medium containing a water soluble azo initiator at a pressure less than 140 kp./cm.sup.2 at a temperature of 60.degree.-85.degree. C.