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:
Nov. 02, 1999
Filed:
Oct. 12, 1993
Tetsuya Higuchi, Ibaraki, JP;
Shunichi Nomura, Kyoto, JP;
Shigeru Ichiba, Ibaraki, JP;
Hiroshi Yamaguchi, Settsu, JP;
Masaomi Goromaru, Neyagawa, JP;
Akira Watanabe, Ibaraki, JP;
Kazuhiro Takeda, Ibaraki, JP;
Mikio Morita, Kobe, JP;
Kazuhisa Fujita, Ibaraki, JP;
Yasuyuki Moriyama, Ibaraki, JP;
Daikin Industries, Ltd, Osaka, JP;
Abstract
A process for continuously preparing a wet powder of PTFE, comprising the step of continuously slurrying a PTFE aqueous dispersion with a high shear machine having a rotating element, and the step of continuously granulating the slurry by using vertical agitator. The process can be carried out for a long time without trouble, and can continuously provide a dry powder having good powder properties. The powder properties can be controlled by regulating operation conditions.