METHOD FOR PRODUCING OF POLYTETRAFLUOROETHYLENE PARTICLE AGGREGATE AND METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE MOLDED ARTICLE

WIPO Patent Application WO/2006/120967

A1

Provided is a method for producing a polyterafluoroethylene (PTFE) molded article which exhibits superior productivity and provides higher latitude with respect to the shape of a finished molded article, as compared to a conventional method for producing a PTFE molded article. Also provided is a method for producing a PTFE particle aggregate which is produced as an intermediate product in the production of the PTFE molded article. A method for producing a PTFE particle aggregate which comprises applying, to a PTFE particle dispersion comprising PTFE particles, a surfactant and water as a dispersant, a force for bringing PTFE particles closer together or a force for bringing PTFE particles to contact with one another to thereby form a PTFE particle aggregate having water and the surfactant included therein. This method can be practiced, for example, in a chamber (1) as shown in Fig. 1.

WANO TAKASHI (JP)
HORIE YURI (JP)
TANAKA ATSUSHI (JP)
TABEI OSAMU (JP)
NAGAI YOZO (JP)

PCT/JP2006/309115

November 16, 2006

May 01, 2006

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NITTO DENKO CORP (JP)
WANO TAKASHI (JP)
HORIE YURI (JP)
TANAKA ATSUSHI (JP)
TABEI OSAMU (JP)
NAGAI YOZO (JP)

C08J5/18; C08J5/16; C08L27/12

JPS4712332A
JP2002201217A	2002-07-19
JPH11246607A	1999-09-14
JP2002308914A	2002-10-23

"Handbook for Fluororesin", 1990, NIKKAN KOGYO SHIMBUN, LTD, pages: 130
See also references of EP 1903071A4

Kamada, Koichi (TOMOE MARION BLDG. 4-3-1, Nishitenma, Kita-ku, Osaka-sh, Osaka 47, JP)

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