Title:
METHOD OF PURIFYING 2,7-DIMETHYLNAPHTHALENE
Document Type and Number:
WIPO Patent Application WO/2006/109667
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a process for industrially stably producing a highly purified 2,7-dimethylnaphthalene with high yield from a dimethylnaphthalene isomer mixture at low production cost through convenient means. [MEANS FOR SOLVING PROBLEMS] There is provided a method of purifying 2,7-dimethylnaphthalene, characterized by including the step of bringing a raw oil containing a mixture of 1,7-dimethylnaphthalene and 2,7-dimethylnaphthalene together with a developing solvent into contact with L-type zeolite to thereby effect adsorption of 1,7-dimethylnaphthalene.
Inventors:
NAGAO SHINICHI (JP)
OGAWA HIROSHI (JP)
OGAWA HIROSHI (JP)
Application Number:
PCT/JP2006/307321
Publication Date:
October 19, 2006
Filing Date:
April 06, 2006
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
NAGAO SHINICHI (JP)
OGAWA HIROSHI (JP)
NAGAO SHINICHI (JP)
OGAWA HIROSHI (JP)
International Classes:
C07C7/13; C07C15/24
Foreign References:
| JPH026320A | 1990-01-10 | |||
| JPS62240632A | 1987-10-21 | |||
| JPH01224336A | 1989-09-07 | |||
| JPH05213787A | 1993-08-24 |
Other References:
See also references of EP 1873133A4
Attorney, Agent or Firm:
Ohtani, Tamotsu (Bridgestone Toranomon Bldg. 6F. 25-2,
Toranomon 3-chom, Minato-ku Tokyo 01, JP)
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