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Title:
RECYCLING METHOD AND RECYCLING DEVICE FOR CLEANING SOLVENT COMPOSITION, AND CLEANING METHOD AND CLEANING SYSTEM FOR OBJECT TO BE CLEANED
Document Type and Number:
WIPO Patent Application WO/2019/093251
Kind Code:
A1
Abstract:
The present invention provides a recycling method for a cleaning solvent composition, whereby contaminants can be efficiently separated therefrom. A recycling method for a cleaning solvent composition in which contaminants are dissolved, wherein the cleaning solvent composition contains a fluorine-based solvent and a flammable organic solvent, and said method includes: a step (A) for precipitating contaminants from the cleaning solvent composition in which the contaminants are dissolved to obtain a mixture including the precipitated contaminants and the cleaning solvent composition; a step (B) for bringing the mixture into contact with a material having an affinity for the contaminants; and a step (C) for removing the contaminants from the mixture that was brought into contact with the material having an affinity for the contaminants to obtain a recycled cleaning solvent composition.

Inventors:
ANDO Keiji (6-2 Marunouchi 1-chom, Chiyoda-ku Tokyo 46, 〒1008246, JP)
SUGAWARA Mitsuru (6-2 Marunouchi 1-chom, Chiyoda-ku Tokyo 46, 〒1008246, JP)
Application Number:
JP2018/040909
Publication Date:
May 16, 2019
Filing Date:
November 02, 2018
Export Citation:
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Assignee:
ZEON CORPORATION (6-2 Marunouchi 1-chome, Chiyoda-ku Tokyo, 46, 〒1008246, JP)
International Classes:
B08B3/14; B01D17/04; B08B3/08; C11D7/26; C11D7/30; C11D7/50; C11D11/00
Domestic Patent References:
WO2016181922A12016-11-17
Foreign References:
JPS54104654A1979-08-17
JP2000167304A2000-06-20
JP2003160799A2003-06-06
JP2000008095A2000-01-11
JP2006289173A2006-10-26
JP2003033730A2003-02-04
JP2011116909A2011-06-16
Attorney, Agent or Firm:
SUGIMURA Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigasek, Chiyoda-ku Tokyo 13, 〒1000013, JP)
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