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Patent Searching and Data


Title:
FINE FILTER FOR PROCESS LIQUID IN CIRCUIT BOARD MANUFACTURING
Document Type and Number:
WIPO Patent Application WO/2017/022836
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a fine filter for a process liquid in circuit board manufacturing, the fine filter having highly exceptional resistance to both strongly acidic detergents and strongly alkaline detergents as well as exceptional properties for removing extremely small foreign matter, said filter being applied to the filtration of a process liquid for manufacturing a circuit board; a fine filter cartridge for a process liquid in circuit board manufacturing that includes said fine filter; and a method for manufacturing a circuit board using a process liquid that has undergone filtration by the fine filter for a process liquid in circuit board manufacturing or the fine filter cartridge for a process liquid in circuit board manufacturing. The fine filter for a process liquid in circuit board manufacturing according to the present invention is characterized by containing a tetrafluoroethylene copolymer (I) that has an amino group in a side chain.

Inventors:
OGURA, Tomoka (Co. Ltd., 1-8-15, Konan, Minato-k, Tokyo 75, 〒1080075, JP)
MANO, Hidesato (Co. Ltd., 1-8-15, Konan, Minato-k, Tokyo 75, 〒1080075, JP)
Application Number:
JP2016/072997
Publication Date:
February 09, 2017
Filing Date:
August 04, 2016
Export Citation:
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Assignee:
W. L. GORE & ASSOCIATES, CO., LTD. (1-8-15, Konan Minato-k, Tokyo 75, 〒1080075, JP)
International Classes:
B01D71/36; B01D69/10; B01D69/12; H01L21/304; H05K3/06
Foreign References:
JP2000512904A2000-10-03
JPH05131124A1993-05-28
JPH04139237A1992-05-13
JP2014525847A2014-10-02
JPH01224009A1989-09-07
JP2011131208A2011-07-07
JP2003522225A2003-07-22
Attorney, Agent or Firm:
UEKI, Kyuichi et al. (Fujita-Toyobo Building 9th floor, 1-16 Dojima 2-chome, Kita-ku, Osaka-sh, Osaka 03, 〒5300003, JP)
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