Lubricating oil composition

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United States of America Patent

PATENT NO 11873462
APP PUB NO 20220275304A1
SERIAL NO

17636823

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Abstract

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A lubricating oil composition with a resin (A) and a base oil (B), the resin (A) is in a range of 0.01 to 50 parts by mass per 100 parts of (A) and (B), the resin (A) satisfies the following requirements: (A-1) the resin (A) is a polymer including a constituent unit from 4-methyl-1-pentene in a range of 60 to 99 mol % and a constituent unit from an α-olefin having 2 to 20 carbon atoms (excluding 4-methyl-1-pentene) in a range of 1 to 40 mol % (provided that 4-methyl-1-pentene and the α-olefin is 100 mol %); (A-2) intrinsic viscosity [η] measured in decalin at 135° C. is in a range of 0.01 to 5.0 dl/g; (A-3) a melting point (Tm) is in a range of 110 to 150° C. as determined by DSC; and the base oil (B) has (B-1) kinematic viscosity at 100° C. is in a range of 1 to 50 mm2/s.

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Patent Owner(s)

Patent OwnerAddress
MITSUI CHEMICALS INCTOKYO 104-0028

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayakawa, Akio Narashino, JP 17 607
Saito, Yusuke Ichihara, JP 120 337
Udagawa, Akihiro Chiba, JP 5 22
Yamamoto, Shuhei Ichihara, JP 213 896
Yamashita, Masahiro Chiba, JP 91 846

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