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:
May. 03, 2016
Filed:
Jan. 22, 2014
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Katsuya Ueno, Tokyo, JP;
Atsushi Tsuji, Tokyo, JP;
Akio Ogawa, Tokyo, JP;
Yasuhiro Suzuki, Tokyo, JP;
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Abstract
Provided is a method for producing an ethylene-tetrafluoroethylene copolymer powder, whereby it is possible to simply and inexpensively produce an ethylene-tetrafluoroethylene copolymer powder excellent in handling efficiency from a slurry having an ethylene-tetrafluoroethylene copolymer dispersed in a fluorinated organic solvent. A method for producing an ethylene-tetrafluoroethylene copolymer powder, which comprises feeding, at a feeding linear velocity exceeding 0.10 m/sec., a slurry having ethylene-tetrafluoroethylene copolymer microparticles dispersed in a specific fluorinated organic solvent, to a centrifugal thin-film evaporatorhaving a cylindrical heat-conducting barrel, a first heating portionfor heating the heat-conducting barrel, and a rotary stirring portionwherein a rotary shaftis provided with stirring bladesfor rotation in the heat-conducting barrelso that a thin film is formed on the inside wall surfaceof the heat-conducting barrel, to obtain an ethylene-tetrafluoroethylene copolymer powder.