Title:
【発明の名称】メタクリレート系流動点降下剤類及び組成物
Document Type and Number:
Japanese Patent JPH078990
Kind Code:
B2
Abstract:
A pour point depressant for lubricating oils comprises a poly(methacrylate) polymer having the repeating unit (I), wherein R is an alkyl group having an average chain length in the polymer of 12.6 to 13.50, and n is an integer indicating the number of repeating units, the value of n being sufficient to provide a molecular weight of 10,000 to 300,000 for the polymer, the pour point depressant having the capacity to reduce the stable pour point to -35 DEG C, while being compatible with other additives such as viscosity index improvers and detergents.
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Inventors:
Wilburn Bruce E
Heilman William J.
Heilman William J.
Application Number:
JP50729188A
Publication Date:
February 01, 1995
Filing Date:
August 18, 1988
Export Citation:
Assignee:
Penzoil Products Company
International Classes:
C10M145/14; C10M157/00; C10M167/00; C10N20/04; C10N30/02; C10N40/25; (IPC1-7): C10M145/14; C10M157/00
Domestic Patent References:
| JPS4742806A | ||||
| JPS62141096A | 1987-06-24 | |||
| JPS4823164A | ||||
| JPS60110790A | 1985-06-17 | |||
| JPS4733016A |
Foreign References:
| US3869396A | 1975-03-04 | |||
| EP0140274A2 | 1985-05-08 |
Attorney, Agent or Firm:
Nishikawa Shigeaki