Title:
OIL-WATER SEPARATING AGENT AND OIL-WATER SEPARATING METHOD
Document Type and Number:
Japanese Patent JP2020078789
Kind Code:
A
Abstract:
To provide an oil-water separating agent and an oil-water separating method with which water (particularly emulsified water) in waste oil can be efficiently separated.SOLUTION: An oil-water separating agent contains a nonionic surfactant which comprises one or more compounds selected from a group consisting of: (A) polyoxyethylene sorbitan mono-fatty acid ester; (B) polyoxyethylene alkyl ether; and (C) polyoxyethylene hardened castor oil. In the (A), the number of carbons in a fatty acid residue is 10-20, and the average addition molar number of ethylene oxide is 3-30 moles. The (B) is a compound represented by general formula (1): R-O-(CHO)-H (In general formula (1), Ris a 10-16C secondary alkyl group, and n is the average addition molar number of 5-12 of an ethyleneoxy group). In the (C), the average addition molar number of ethylene oxide is 3-50 moles.SELECTED DRAWING: None
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Inventors:
KAMENOUE SHOGO
Application Number:
JP2018214034A
Publication Date:
May 28, 2020
Filing Date:
November 14, 2018
Export Citation:
Assignee:
KAO CORP
International Classes:
B01D17/05
Domestic Patent References:
| JPS5895527A | 1983-06-07 | |||
| JP2015171689A | 2015-10-01 | |||
| JPH06322360A | 1994-11-22 |
Foreign References:
| US20140251919A1 | 2014-09-11 |
Attorney, Agent or Firm:
Patent Business Corporation Unias International Patent Office