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US 5,451,647 AGranted
Living carbocationic polymerization process
AssigneesExxon Chemical Patents Inc., University of Massachusetts Lowell
InventorsRudolf Faust, Hsien-Chang Wang, Miklos Gyor
Life of this patent
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Abstract
An olefin polymerization process is provided wherein an olefin chargestock is contacted with an organic compound polymerization initiator, a Lewis acid coinitiator and a pyridine compound such as 2,6-di-tert-butylpyridine to produce homopolymers, copolymers or block copolymers having a narrow molecular weight distribution.
Claims13
A process for polymerizing an olefin which comprises the step of contacting an olefin chargestock with
- (A) an organic compound selected from the group consisting of an alcohol, an ether, an ester, an organic halide and mixtures thereof;
- (B) TiCl.sub.4 ;
- and
- (C) a pyridine compound selected from the group consisting of 2,6-di-tert-butylpyridine, a substituted 2,6-di-tert-butylpyridine, and mixtures thereof;
- at polymerization conditions in a polymerization zone, to produce a polymer.
2 more elements
A process for polymerizing an olefin which comprises the step of contacting an olefin chargestock with:
- (A) an organic halide;
- (B) VCL.sub.4 ;
- and
- (C) a pyridine compound selected from the group consisting of 2,6-di-tert-butylpyridine, a substituted 2,6-di-tert-butylpyridine;
- and mixtures thereof at polymerization conditions in a polymerization zone, to produce a polymer.
2 more elements
Dependencies are inferred from the claim text.