PROCESS FOR PRODUCING BORON TETRAFLUORIDE, BORON TETRAFLUORIDE PRODUCED BY SAID PROCESS, ELECTROLYSIS SOLUTION FOR ELECTRIC DOUBLE LAYER CAPACITOR USING SAID BORON TETRAFLUORIDE, AND PROCESS FOR PRODUCING SAID ELECTROLYSIS SOLUTION

Title:

Document Type and Number:

WIPO Patent Application WO/2006/090657

Kind Code:

A1

Abstract:

This invention provides a process for producing boron tetrafluoride represented by Q⁺BF₄^-. The production process is characterized by comprising reacting (A) a salt compound represented by Q⁺X^- wherein Q⁺ represents an onium ion or a metal ion, X^- represents an inorganic acid ion except for BF₄^-, an organic acid ion, or a hydroxide ion, (B) at least one boron compound selected from the group consisting of orthoboric acid, metaboric acid, tetraboric acid, boron oxide, and a boric ester represented by B(OR¹)(OR²)(OR³) wherein R¹ represents an alkyl group having 1 to 10 carbon atoms and R² and R³ represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, provided that R¹, R², and R³ may be the same or different, and (C) hydrogen fluoride. There are also provided a boron tetrafluoride produced by the above process, an electrolysis solution for an electric double layer capacitor using said boron tetrafluoride, and a process for producing the electrolysis solution. The production process can produce high-purity boron tetrafluoride for use in an electrolysis solution for an electric double layer capacitor without using an expensive and highly toxic BF₃ gas in an industrially advantageous manner. In particular, boron tetrafluoride having good properties as a nonaqueous electrolysis solution for an electric double layer capacitor can be produced in an industrially very advantageous manner, and, thus, a high-performance nonaqueous electrolysis solution for an electric double layer capacitor can be produced in a cost-effective manner.

Inventors:

KANBARA YUTAKA (JP)
MOROHASHI KENJI (JP)

Application Number:

PCT/JP2006/302933

Publication Date:

August 31, 2006

Filing Date:

February 20, 2006

Export Citation:

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Assignee:

MITSUBISHI GAS CHEMICAL CO (JP)
KANBARA YUTAKA (JP)
MOROHASHI KENJI (JP)

International Classes:

C07C209/68; C01B35/06; C07C211/63; C07D233/58; C07F9/54; H01G11/62

Domestic Patent References:

WO2002076924A1

2002-10-03

Foreign References:

JPH11157830A	1999-06-15
JPH11310555A	1999-11-09
JP2000226361A	2000-08-15
JP2000281657A	2000-10-10
JP2002326977A	2002-11-15
JPS58190820A	1983-11-07
JPS63284148A	1988-11-21

Attorney, Agent or Firm:

Ohtani, Tamotsu (Bridgestone Toranomon Bldg. 6F. 25-2, Toranomon 3-chom, Minato-ku Tokyo, JP)

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