Title:
【発明の名称】改良されたポリブテン製造法
Document Type and Number:
Japanese Patent JP3020969
Kind Code:
B2
Abstract:
Polybutene is prepared from a mixed C4 hydrocarbon feedstream using an organo-aluminum/HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polybutene product having a very narrow molecular weight distribution is obtained over the Mn range of 700 to 3,000. Dispersants derived from this polybutene exhibit substantially improved performance in lubricating oil compositions.
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Inventors:
Frank Jouen Yeah Chen
Application Number:
JP30227589A
Publication Date:
March 15, 2000
Filing Date:
November 22, 1989
Export Citation:
Assignee:
Exxon Chemical Patents Incorporated
International Classes:
C07B61/00; C07C2/30; C07C11/02; B01J31/14; C08F4/42; C08F4/54; C08F10/00; C08F10/08; C08F110/08; (IPC1-7): C08F4/14; C08F4/52; C08F10/08
Domestic Patent References:
| JP63213505A |
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)