Title:
POLYTETRAFLUOROETHYLENE BLACK POROUS MEMBRANE, METHOD FOR PRODUCING SAME, AND BREATHABLE MEMBRANE AND BREATHABLE MATERIAL USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/020812
Kind Code:
A1
Abstract:
This polytetrafluoroethylene (PTFE) black porous membrane is dyed black, and the degree of whiteness of the main surface measured in accordance with JIS L1015 (the Hunter method) is 18.0 to 23.0%, and the degree of whiteness of the main surface after being heated for one minute at 350°C is 18.0 to 25.0%. The PTFE black porous membrane is suitable for breathable membranes that allow gases to pass through while blocking water and/or dust, specifically, a waterproof sound-permeable membrane, a waterproof breathable membrane, and a dustproof breathable membrane, for example.
Inventors:
MORI MASAAKI (JP)
HORIE YURI (JP)
HORIE YURI (JP)
Application Number:
PCT/JP2013/003494
Publication Date:
February 06, 2014
Filing Date:
June 03, 2013
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C08J9/00; B01D39/16; B01D71/36; B29C55/14; D06P3/00; B29K27/18; B29K105/04; B29L7/00
Foreign References:
| JP2011052180A | 2011-03-17 | |||
| JPH03199475A | 1991-08-30 | |||
| JPH0827304A | 1996-01-30 | |||
| JPH10165787A | 1998-06-23 | |||
| JP2004083811A | 2004-03-18 | |||
| JPH0827304A | 1996-01-30 | |||
| JPH07289865A | 1995-11-07 |
Other References:
See also references of EP 2881425A4
Attorney, Agent or Firm:
KAMADA, KOICHI (JP)
Koichi Kamata (JP)
Koichi Kamata (JP)
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