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. 11, 2003
Filed:
Dec. 20, 2001
Shigeki Kobayashi, Ichihara, JP;
Jun Hoshikawa, Ichihara, JP;
Kazuo Kato, Ichihara, JP;
Hiroki Kamiya, Ichihara, JP;
Hiroyuki Hirai, Ichihara, JP;
Other;
Abstract
A method of producing a paraffin wax for aqueous dispersion polymerization of TFE which allows high speed aqueous dispersion polymerization of TFE with excellent polymerization behavior such as excellent dispersion stability and consistent production of PTFE having excellent physical properties, and a method of producing PTFE using the paraffin wax. Aqueous dispersion polymerization of tetrafluoroethylene (hereinafter referred to as TFE) is conducted in the presence of a paraffin wax, a polymerization initiator and an emulsifier at least once and then the paraffin wax is recovered. The recovered paraffin wax is used for aqueous dispersion polymerization of TFE in the presence of a polymerization initiator and an emulsifier.