Title:
【発明の名称】高分子粘度指数向上剤およびそれを含む油組成物
Document Type and Number:
Japanese Patent JP2791062
Kind Code:
B2
Abstract:
A triblock copolymer VI improver comprising two terminal hydrogenated polyisoprene blocks and a central polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units. Oil compositions comprising such triblock copolymer VI improvers exhibit a good balance between thickening efficiency and mechanical shear stability combined with relatively high HTHSR viscosities.
Inventors:
DANFUOOSU HARORUDO ORUSON
DEIRU RII HANDORIN
DEIRU RII HANDORIN
Application Number:
JP27286788A
Publication Date:
August 27, 1998
Filing Date:
October 28, 1988
Export Citation:
Assignee:
SHERU INTERN RISAACHI MAACHATSUPII BV
International Classes:
C08F297/02; C08F297/04; C10M143/12; C10M143/14; C10M159/12; C10N30/02; C10N60/02; (IPC1-7): C10M143/12; C10M159/12
Domestic Patent References:
| JP4937564B1 |
Attorney, Agent or Firm:
Yoshio Kawaguchi (2 outside)