Title:
粘度指数向上剤濃縮物
Document Type and Number:
Japanese Patent JP6706191
Kind Code:
B2
Abstract:
A viscosity index improver containing, in diluent oil, one or more optionally functionalized linear block copolymers having at least one block derived from alkenyl arene covalently linked to at least one block derived from diene in an amount that is greater than the critical overlap concentration (c h * ), in mass%, for the linear block copolymers in the diluent oil; and ester base stock and/or at least one star (or radial) polymer, the star polymer being present in an amount such that the c/c h * value of the star polymer in the concentrate falls within the range of from 0.01 to about 1.6, wherein c is the concentration in mass% of star polymer in the concentrate and c h * is the critical overlap concentration in mass% for the star polymer in the diluent oil used to form the concentrate.
Inventors:
Raj Earl Taribagir
Stuart A Taylor
Stuart Briggs
Laurent Chambar
Stuart A Taylor
Stuart Briggs
Laurent Chambar
Application Number:
JP2016239543A
Publication Date:
June 03, 2020
Filing Date:
December 09, 2016
Export Citation:
Assignee:
Infineum International Limited
International Classes:
C10M143/12; C08L53/00; C10M143/00; C10M143/14; C10M145/10; C10M149/04; C10M149/06
Domestic Patent References:
| JP2013129835A | ||||
| JP2012532958A | ||||
| JP2001509183A | ||||
| JP2051552A | ||||
| JP2001501653A |
Attorney, Agent or Firm:
Takaki Nishijima
Disciple Maru Ken
Shinichiro Tanaka
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki
Satsuki Ichikawa
Hironobu Hattori
Kobayashi Machiko
Disciple Maru Ken
Shinichiro Tanaka
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki
Satsuki Ichikawa
Hironobu Hattori
Kobayashi Machiko