Title:
1-ALKENE/ALPHA, OMEGA-DIENE COPOLYMER HAVING HIGH VISCOSITY INDEX
Document Type and Number:
Japanese Patent JPH1095813
Kind Code:
A
Abstract:
To provide a 1-alkene/α,ω-diene copolymer having a high viscosity inder and usable as a viscosity improver for lubricants and engine oils.
A copolymer comprising 99.0 to 99.99wt.% 2-20C 1-alkene and 0.01 to 1.0wt.% 5-20C α,ω-diene having isolated double bonds, and having a viscosity index (VI) of at least 160. The copolymer can be produced by the polymn. in gas phase, suspension phase, solution phase or liquid monomer. The solution polymn. and liquid monomer polymn. are particularly pref. The polymn. is usually conducted at -50 to 300°C under 0.5 to 3,000 bars. The copolymer is pref. produced in the presence of a catalyst compsn. contg. a metallocene complex salt and a metallocenium ion-forming compd. as the active components.
Inventors:
ROESCH JOACHIM (DE)
MACH HELMUT (DE)
GRUBER FREDDY (DE)
MACH HELMUT (DE)
GRUBER FREDDY (DE)
Application Number:
JP16049597A
Publication Date:
April 14, 1998
Filing Date:
June 03, 1997
Export Citation:
Assignee:
BASF AG
International Classes:
C10M143/00; C07C2/30; C08F4/642; C08F4/645; C08F4/6592; C08F210/00; C08F210/14; C10M143/14; C08F4/659; C08F236/20; C10N30/02; C10N40/25; (IPC1-7): C08F210/00; C08F4/642; C10M143/00
Attorney, Agent or Firm:
Tajiro Taiji (1 person outside)
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