Patent ID: 7411104
Filing Date: 2008-08-12
Classification: C08F

Abstract:
1. A method for producing high reactive polybutene having 300˜5000 of number average molecular weight (Mn) from (a) isobutene, (b) C4 hydrocarbon compounds derived from cracking of naphtha, and containing more than 10 weight % of isobutene, or (c) C4 hydrocarbon compounds derived from a refining process of crude oil or from catalytic cracking of heavy gas oil, and containing more than 10 weight % of isobutene, wherein a polymerization reaction of the isobutene is carried out in the presence of a catalyst system comprising secondary alkylether, tertiary alcohol, and boron trifluoride, the amount of boron trifluoride is 0.05˜1.0 weight part per 100 weight part of isobutene, the mole ratio of a co-catalyst including secondary alkylether and tertiary alcohol:boron trifluoride is 1.0˜2.0:1, and the mole ratio of secondary alkylether:tertiary alcohol is 0.5˜1.2:1.