Title:
【発明の名称】粘度指数向上剤
Document Type and Number:
Japanese Patent JP2950963
Kind Code:
B2
Abstract:
Degraded molecular weight copolymers of ethylene alpha-olefin are provided. The ethylene alpha-olefin copolymers, before degradation, are characterized by having a narrow molecular weight distribution and are comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains. The degraded copolymers are useful as viscosity index improvers for oils.
Inventors:
DEIBITSUTO IENRUN CHUN
MAAKU JOZEFU SUTORUGURINSUKI
MAAKU JOZEFU SUTORUGURINSUKI
Application Number:
JP26655590A
Publication Date:
September 20, 1999
Filing Date:
October 05, 1990
Export Citation:
Assignee:
EKUSON CHEM PATENTSU INC
International Classes:
C08F8/50; C08L53/00; C10L1/16; C10L1/18; C10L1/195; C10L1/198; C10L1/236; C10L1/238; C10L1/24; C10L10/08; C10M143/02; C10M145/02; C10M149/06; C10M151/02; C10M159/12; B29C48/82; C08L23/16; C10N20/04; C10N30/02; C10N70/00; (IPC1-7): C08F8/50; C10L1/18; C10M143/02
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)