公开(公告)号：US11655428B2

公开(公告)日：2023-05-23

申请号：US17044846

申请日：2019-04-16

申请人： MITSUI CHEMICALS, INC.

发明人： Akio Hayakawa ,  Akihiro Udagawa ,  Noriko Kai ,  Yuji Tokunaga

IPC分类号： C10M107/04 ,  C10M143/02 ,  C10N40/25 ,  C10N30/02 ,  C10N40/26

CPC分类号： C10M107/04 ,  C10M143/02 ,  C10M2205/022 ,  C10M2205/0225 ,  C10N2030/02 ,  C10N2040/252 ,  C10N2040/255 ,  C10N2040/26

摘要： A lubricating oil composition includes an ethylene/α-olefin copolymer (A) having 70 to 90 mole % of structural units derived from ethylene and an intrinsic viscosity [η] of 0.3 to 1.0 dl/g.

公开(公告)号：US11873462B2

公开(公告)日：2024-01-16

申请号：US17636823

申请日：2020-08-26

申请人： MITSUI CHEMICALS, INC.

发明人： Akio Hayakawa ,  Shuhei Yamamoto ,  Akihiro Udagawa ,  Masahiro Yamashita ,  Yusuke Saito

IPC分类号： C10M169/04 ,  C10M101/00 ,  C10M143/08 ,  C10N20/02

CPC分类号： C10M169/041 ,  C10M101/00 ,  C10M143/08 ,  C10M2203/003 ,  C10M2203/1006 ,  C10M2205/028 ,  C10N2020/02

摘要： 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.