Title:
VISCOSITY MODIFIER FOR LUBRICATING OIL AND LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2001/085880
Kind Code:
A1
Abstract:
A lubricating oil composition which is excellent not only in low-temperature properties, oxidative stability, lubricity at high temperatures, and energy saving but in low-temperature handleability; and a viscosity modifier for lubricating oils which is used in the lubricating oil composition. The viscosity modifier is characterized by comprising a copolymer of (i) ethylene, (ii) an a-olefin having three or more carbon atoms, and (iii) a higher a-olefin in which the number of carbon atoms is 4 to 20 and is larger by at least one than that of the a-olefin having three or more carbon atoms, the copolymer being an ethylene/a-olefin copolymer (B) having the following properties (1) and (2): (1) the content of units derived from ethylene (i) is 40 to 80 wt.%, the content of units derived from the a-olefin having three or more carbon atoms (ii) is 15 to 59 wt.%, and the content of units derived from the higher a-olefin having 4 to 20 carbon atoms (iii) is 0.1 to 25 wt.% (the sum is 100 wt.%) and (2) the weight-average molecular weight (Mw) determined by GPC is 80,000 to 400,000 in terms of polystyrene.
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| JP7423765 | Olefin polymer |
| WO/2022/229310 | METAL COMPLEX CATALYST FOR THE POLYMERIZATION OF OLEFINS |
| WO/2001/094428 | MULTIMODAL POLYETHYLENE OBTAINED WITH MULTILAYER CHROMIUM CATALYST |
Inventors:
OKADA KEIJI (JP)
KANESHIGE RYOUSUKE (JP)
KANESHIGE RYOUSUKE (JP)
Application Number:
PCT/JP2001/003894
Publication Date:
November 15, 2001
Filing Date:
May 10, 2001
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
LUBRIZOL CORP (US)
OKADA KEIJI (JP)
KANESHIGE RYOUSUKE (JP)
LUBRIZOL CORP (US)
OKADA KEIJI (JP)
KANESHIGE RYOUSUKE (JP)
International Classes:
C08F210/16; C10M143/00; C10M157/00; C08F4/659; (IPC1-7): C10M143/00
Foreign References:
| US3697429A | 1972-10-10 | |||
| JP2000198892A | 2000-07-18 | |||
| JP2000191857A | 2000-07-11 | |||
| JP2000191855A | 2000-07-11 | |||
| JPH08301934A | 1996-11-19 | |||
| EP0129414A2 | 1984-12-27 |
Other References:
See also references of EP 1300458A4
Attorney, Agent or Firm:
Suzuki, Shunichiro (13-6 Nishigotanda 7-chome Shinagawa-ku, Tokyo, JP)
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