Title:
【発明の名称】選択的水素化ポリマーから得られる分散剤および分散剤粘度指数向上剤
Document Type and Number:
Japanese Patent JPH11506391
Kind Code:
A
Abstract:
The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated and functionalized. The dispersant substances include compositions including a copolymer of a ring substituted styrene and a conjugated diene. The polymers are selectively hydrogenated to produce polymers which have highly controlled residual amounts of aromatic unsaturation, permitting highly selective functionalization. Also provided are lubricant fluids, such as mineral and synthetic oils, which have been modified in their dispersancy and/or viscometric properties by means of the dispersant substances of the invention. Also provided are methods of modifying the dispersancy and/or viscometric properties of lubricating fluids such as mineral and synthetic lubricating oils. The dispersant substances may also include a carrier fluid to provide dispersant concentrates.
Inventors:
Brandes, Ellen Bernice
Loveless, Frederick Charles
Loveless, Frederick Charles
Application Number:
JP50044897A
Publication Date:
June 08, 1999
Filing Date:
March 26, 1996
Export Citation:
Assignee:
Mobile Oil Corporation
International Classes:
C07C15/40; C08F8/00; C08F8/04; C08F8/08; C08F236/04; C08F236/10; C08F297/02; C09K23/52; C10L1/16; C10L1/195; C10L1/196; C10L1/198; C10L1/20; C10L1/236; C10L1/238; C10L1/24; C10L10/00; C10L10/18; C10M143/12; C10M147/02; C10M149/02; C10M149/06; C10M149/10; C10L1/18; C10L1/22; C10N30/02; C10N30/04; (IPC1-7): B01F17/52; C10L1/16; C10M143/12; C10M147/02; C10M149/02
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)