Title:
METHOD OF PROCESSING METHACRYLIC-ESTER-CONTAINING SOLUTION
Document Type and Number:
WIPO Patent Application WO/2005/082831
Kind Code:
A1
Abstract:
A method of processing a methacrylic-ester-containing solution, comprising subjecting a methacrylic-ester-containing solution to any one or two or more processing operations selected from among washing, neutralization and extraction, wherein a waste water or waste water solution obtained by recovery of effective ingredients after the above one or two or more processing operations is recycled to the prior processing operation while suppressing the occurrence of sludge, avoiding any deterioration of solution/solution separation efficiency and lowering of post-processing distillation efficiency and realizing long-term continuous stable operations. Before the recycling of the waste water or waste water solution to the prior processing operation, the waste water or waste water solution is cooled to a temperature of 10 to 50°C, followed by removing of solid matter.
Inventors:
YADA SHUHEI (JP)
TAKASAKI KENJI (JP)
SUZUKI YOSHIRO (JP)
OGAWA YASUSHI (JP)
TAKASAKI KENJI (JP)
SUZUKI YOSHIRO (JP)
OGAWA YASUSHI (JP)
Application Number:
PCT/JP2004/014932
Publication Date:
September 09, 2005
Filing Date:
October 08, 2004
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
YADA SHUHEI (JP)
TAKASAKI KENJI (JP)
SUZUKI YOSHIRO (JP)
OGAWA YASUSHI (JP)
YADA SHUHEI (JP)
TAKASAKI KENJI (JP)
SUZUKI YOSHIRO (JP)
OGAWA YASUSHI (JP)
International Classes:
B01D9/02; B01D11/04; C02F1/00; C02F1/58; C02F1/66; C02F1/52; C07C67/56; C07C67/58; C07C69/54; (IPC1-7): C07C67/58; C07C69/54; C02F1/58; B01D9/02
Foreign References:
| JPS6299345A | 1987-05-08 |
Other References:
See also references of EP 1721886A4
None
None
Attorney, Agent or Firm:
Okada, Kazuhiko (6F Kudan Kangyo Bldg., 10-1, Kudan-Kita
1-chome, Chiyoda-k, Tokyo 73, JP)
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