公开(公告)号：US20240309137A1

公开(公告)日：2024-09-19

申请号：US18571504

申请日：2022-06-14

Applicant: SANYO CHEMICAL INDUSTRIES, LTD. ,  ENEOS Corporation

Inventor： Kazuki OGATA ,  Yoshimitsu SUGIYAMA ,  Naohiro TORII ,  Satoshi GOTO ,  Yuya MIZUTANI ,  Hidetoshi OGATA ,  Yuma SEKI ,  Tatsuki NAKAJIMA

IPC: C08F220/24 ,  C10M147/04 ,  C10M171/00

CPC classification number: C08F220/24 ,  C10M147/04 ,  C10M171/008 ,  C10M2213/04

Abstract: The present invention relates to a viscosity index improver containing a copolymer (A) that contains, as essential constituent monomers, a fluorine atom-containing monomer (a) represented by the following formula (1) and a monomer (b) represented by the following formula (2),
wherein the copolymer (A) has a solubility parameter of 8.1 to 10.0 (cal/cm3)1/2, and a mass ratio (b/a) of the monomer (b) to the monomer (a) in the monomers constituting the copolymer (A) is 0.01 to 42:




wherein R1 represents a hydrogen atom or a methyl group; R2 is a C2-C4 alkylene group; p is an integer of 0 or 1; q is an integer from 0 to 20, each R2 may be the same as or different from each other when q is 2 or greater; and Y is a monovalent group in which one or more or all of hydrogen atoms in a C1-C40 hydrocarbon group are replaced by fluorine atoms, and




wherein R3 represents a hydrogen atom or a methyl group; —X1— is a group represented by —O— or —NH—; R4 is a C2-C4 alkylene group; r is an integer of 0 or 1; s is an integer from 0 to 20, and each R4 may be the same as or different from each other when s is 2 or greater; and R5 is a C1-C40 hydrocarbon group.

公开(公告)号：US20230250354A1

公开(公告)日：2023-08-10

申请号：US18013418

申请日：2021-07-07

Applicant: ENEOS CORPORATION

Inventor： Tatsuki NAKAJIMA ,  Shogo HASHIMOTO ,  Hidetoshi OGATA ,  Yuma SEKI

IPC: C10M129/76 ,  C09K5/04 ,  C10M169/04 ,  C10N40/30

CPC classification number: C10M129/76 ,  C09K5/045 ,  C10M169/04 ,  C10M2207/281 ,  C09K2205/126 ,  C10N2040/30 ,  C10M2207/289

Abstract: One aspect of the present invention is a refrigerating machine oil containing: a base oil; and a partial ester of a carboxylic acid and a polyhydric alcohol, wherein the carboxylic acid contains an unsaturated carboxylic acid.