Title:
WATER-SOLUBLE WORKING OIL
Document Type and Number:
Japanese Patent JP3912837
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a water-soluble working oil not undergoing deterioration in performances caused by microbial decomposition and improved in working performances, antifoaming properties and rust-preventive properties by using a product of etherification of a propylene oxide/ethylene oxide block copolymer.
SOLUTION: A propylene oxide/ethylene oxide block copolymer having an ethylene oxide content of 10-80wt.% and an average molecular weight of 1,000-30,000 and represented by any one of formulas I to IV (wherein a, b, c, d, e, f and h are each 1 o greater; and R is a 2-4C alkylene) and an α- monohalogenated alkyl are reacted with each other in the presence of a tert. amine (e.g. triethylamine) in the presence of a solvent (e.g. methyl dichloride, chloroform or ether) or in the absence of any solvent to obtain at least one ether selected among alkyl ethers, alkenyl, ethers, aryl ethers and aralkyl ethers of the block copolymer. A concentrate containing 1-80wt.% this ether is diluted with water five-fold to one-hundred-fold to form a diluted solution having a content of the ether of 0.1wt.% or above.
Inventors:
Hiromi Nakagawa
Application Number:
JP6205497A
Publication Date:
May 09, 2007
Filing Date:
February 28, 1997
Export Citation:
Assignee:
Neos Co., Ltd.
International Classes:
C10M173/02; C10M133/08; C10M149/14; C10N20/04; C10N30/06; C10N30/12; C10N30/16; C10N30/18; C10N40/20; C10N40/22; (IPC1-7): C10M173/02; //(C10M173/02; C10M145:36; C10M129:16; C10M149:14; C10M133:08); C10N30:12; C10N30:16; C10N30:18; C10N40:22
Domestic Patent References:
| JP5714696A | ||||
| JP5889695A | ||||
| JP58122993A | ||||
| JP93469A |