METHOD FOR PRODUCING TETRAFLUOROETHYLENE-CONTAINING POWDER

Title:

METHOD FOR PRODUCING TETRAFLUOROETHYLENE-CONTAINING POWDER

Document Type and Number:

Japanese Patent JP3711114

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a method for producing polytetrafluoroethylene-containing powder having excellent fluidity and dispersibility in a thermoplastic resin.
SOLUTION: The method for producing the powder is carried out as follows. Wet powder containing (A) a polytetrafluoroethylene and (B) a thermoplastic polymer having 40-98°C glass transition temperature and having 40-70 mass% content of (A) the polytetrafluoroethylene in the solid content and 30-60 mass% content of (B) the thermoplastic polymer in the solid content is dried with a pneumatic dryer 10 and further dried with a fluidized dryer 20. The moisture content in the wet powder charged into the fluidized dryer 20 is regulated to ≤50 mass%.

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Inventors:

Kaoru Matsuda
Yumoto

Application Number:

JP2003025940A

Publication Date:

October 26, 2005

Filing Date:

February 03, 2003

Export Citation:

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Assignee:

Mitsubishi Rayon Co., Ltd.

International Classes:

C08J3/12; B29B13/06; C08L27/18; C08L101/00; B29K27/18; (IPC1-7): C08J3/12

Domestic Patent References:

JP2003002980A
JP2003262466A

Attorney, Agent or Firm:

Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama

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