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Patent Searching and Data


Title:
METHOD OF REFINING METHYLAL
Document Type and Number:
WIPO Patent Application WO/1996/011178
Kind Code:
A1
Abstract:
A method of highly refining methylal containing impurities such as water and methanol, which comprises bringing the methylal in a gaseous state into countercurrent gas-liquid contact with polyalkylene glycol or a derivative thereof to thereby remove the water and methanol.

Inventors:
TANAKA YOSHIO (JP)
YAMAMOTO SHIGERU (JP)
Application Number:
PCT/JP1995/001974
Publication Date:
April 18, 1996
Filing Date:
September 28, 1995
Export Citation:
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Assignee:
ASAHI CHEMICAL IND (JP)
TANAKA YOSHIO (JP)
YAMAMOTO SHIGERU (JP)
International Classes:
C07C41/58; C07C43/303; (IPC1-7): C07C43/303; C07C41/58
Foreign References:
JPH0356134A1991-03-11
JPS58103331A1983-06-20
Other References:
See also references of EP 0785182A4
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