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US 11,225,625 B2Granted
Lubricant material for assisting machining process, lubricant sheet for assisting machining process, and machining method
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsShigeru Horie, Yousuke Matsuyama, Kazuhiro Nakamura, Kenji Ishikura
Life of this patent
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Abstract
A lubricant material for assisting machining process comprising a polyethylene oxide-polypropylene oxide copolymer having a weight average molecular weight of 5.0×104 or more and 2.0×105 or less.
Claims16
A lubricant material for assisting machining process comprising:
- a polyethylene oxide-polypropylene oxide copolymer having a weight average molecular weight of 5.0×104 or more and 2.0×105 or less,
- a high molecular weight compound (A) having a weight average molecular weight of 5.0×104 or more and 1.0×106 or less, the high molecular weight compound (A) not being the polyethylene oxide-polypropylene oxide copolymer;
- a medium molecular weight compound (B) having a weight average molecular weight of 1.0×103 or more and less than 5.0×104;
- and
- a graphite (C)
- wherein
- a content of a structural unit derived from the polyethylene oxide in the polyethylene oxide-polypropylene oxide copolymer is 80 to 95 mass % of the entire polyethylene oxide-polypropylene oxide copolymer, and the balance is a structural unit derived from polypropylene oxide;
- and
- a content of the polyethylene oxide-polypropylene oxide copolymer is 10 to 30 parts by mass per 100 parts by mass in total of the polyethylene oxide-polypropylene oxide copolymer, the high molecular weight compound (A), the medium molecular weight compound (B), and the graphite (C).
6 more elements
Dependencies are inferred from the claim text.