Title:
WORKING FLUID, WORKING FLUID COMPOSITION AND BRITTLE MATERIAL WORKING FLUID COMPOSITION
Document Type and Number:
Japanese Patent JP2022157907
Kind Code:
A
Abstract:
To provide a working fluid excellent in lubricity, antifoaming properties and cleanability.SOLUTION: A working fluid comprises: a specific content of a component (A); a specific content of a component (B); a specific content of a component (C); a component (D); and water, wherein the component (A) is a compound that has a cloud point of a 1 mass% aqueous solution of 20°C or higher and 50°C or lower, contains a copolymerization site of an ethylene oxide and an alkylene oxide other than the ethylene oxide, and has no acetylene group, the component (B) is a compound that has a cloud point of a 1 mass% aqueous solution of above 50°C and 80°C or less, contains the copolymerization site of an ethylene oxide and an alkylene oxide other than the ethylene oxide, and has no acetylene group, and the component (C) is one or more selected from a group consisting of acetylene glycol having a HLB value of 4 or more to 12 or less and alkylene oxide adducts of acetylene glycol having a HLB value of 4 or more to 12 or less.SELECTED DRAWING: None
Inventors:
KITAMURA TOMOHIKO
Application Number:
JP2021062408A
Publication Date:
October 14, 2022
Filing Date:
March 31, 2021
Export Citation:
Assignee:
IDEMITSU KOSAN CO
International Classes:
C10M107/34; C10M173/00
Attorney, Agent or Firm:
Patent Attorney Corporation Otani Patent Office