Title:
VISCOSITY INDEX IMPROVER, REFRIGERATOR OIL, AND WORKING FLUID COMPOSITION FOR REFRIGERATORS
Document Type and Number:
WIPO Patent Application WO/2022/270342
Kind Code:
A1
Abstract:
The present invention relates to: a viscosity index improver which contains a copolymer (A) that contains, as essential constituent monomers, a monomer (a) represented by general formula (1) and having a fluorine atom and a monomer (b) represented by general formula (2), wherein the solubility parameter of the copolymer (A) is 8.1 to 10.0 (cal/cm3)1/2, and the ratio (b/a) of the mass of the monomer (b) to the mass of the monomer (a) in the monomers constituting the copolymer (A) is 0.01 to 42; and the like. [In general formula (1), R1 represents a hydrogen atom or a methyl group; R2 represents an alkylene group having 2 to 4 carbon atoms; p represents an integer of 0 or 1; q represents an integer of 0 to 20, and in cases where q is 2 or more, the R2 moieties may be the same as or different from each other; and Y represent a monovalent group that is obtained by substituting some or all of hydrogen atoms in a hydrocarbon group having 1 to 40 carbon atoms by fluorine atoms.] [In general formula (2), R3 represents a hydrogen atom or a methyl group; -X1- represents a group represented by -O- or -NH-; R4 represents an alkylene group having 2 to 4 carbon atoms; r represents an integer of 0 or 1; s represents an integer of 0 to 20, and in cases where s is 2 or more, the R4 moieties may be the same as or different from each other; and R5 represents a hydrocarbon group having 1 to 40 carbon atoms.]
Inventors:
OGATA KAZUKI (JP)
SUGIYAMA YOSHIMITSU (JP)
TORII NAOHIRO (JP)
GOTO SATOSHI (JP)
MIZUTANI YUYA (JP)
OGATA HIDETOSHI (JP)
SEKI YUMA (JP)
NAKAJIMA TATSUKI (JP)
SUGIYAMA YOSHIMITSU (JP)
TORII NAOHIRO (JP)
GOTO SATOSHI (JP)
MIZUTANI YUYA (JP)
OGATA HIDETOSHI (JP)
SEKI YUMA (JP)
NAKAJIMA TATSUKI (JP)
Application Number:
PCT/JP2022/023716
Publication Date:
December 29, 2022
Filing Date:
June 14, 2022
Export Citation:
Assignee:
SANYO CHEMICAL IND LTD (JP)
ENEOS CORP (JP)
ENEOS CORP (JP)
International Classes:
C08F220/04; C09K3/00; C09K5/04; C10M105/38; C10M107/24; C10M107/34; C10M147/04
Domestic Patent References:
WO2019111752A1 | 2019-06-13 |
Foreign References:
JP2012188520A | 2012-10-04 | |||
JP2006096809A | 2006-04-13 | |||
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Other References:
POLYMER ENGINEERING AND SCIENCE, vol. 14, no. 2, February 1974 (1974-02-01), pages 147 - 154
Attorney, Agent or Firm:
WISEPLUS IP FIRM (JP)
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