Heterogeneous lewis acid-type catalysts
AssigneeExxon Chemical Patents Inc.
InventorsFrank Joung-Yei Chen, Herve Cheradame, Jon Edmond Stanat, Gerard Rissoan
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Abstract
A solid state insoluble salt catalyst system for the carbocationic polymerization of olefin monomer in the presence of a polar or non-polar reaction medium, which comprises (a) solid state catalyst component comprising at least one salt of a strong acid and a carbocationically active transition metal selected from Groups III A, IV A, V A and VI A of the Periodic Table of Elements, wherein said salt is insoluble in the reaction medium; and (b) cocatalyst component effective for promoting the carbocationic polymerization.
Claims11
A solid state heterogeneous insoluble salt carbocationic polymerization and hydrocarbon conversion catalyst, which comprises:
- (a) at least one solid state insoluble salt selected from the group consisting of the salts of a strong acid and a Group III A, Group IV A, Group VA or Group VI A transition metal selected from the group consisting of yttrium, lanthanum, zirconium, hafnium, niobium, tantalum, molybdenum and tungsten;
- and
- (b) a cocatalyst selected from the group consisting of water, lower alkanols, alkyl halides, inorganic acids, carboxylic acids, sulfonic acids and mixtures thereof.
A solid state insoluble salt catalyst system for the carbocationic polymerization of olefin monomer in the presence of a polar or non-polar liquid reaction medium, which comprises
- (a) solid state catalyst component comprising at least one salt of a strong acid and a transition metal selected from the group consisting of yttrium lanthanum, zirconium, hafnium, niobium, tantalum, molybdenum and tungsten, wherein said salt is insoluble in the liquid reaction medium;
- and
- (b) cocatalyst component effective for promoting the carbocationic polymerization, selected from the group consisting of water, lower alkanols, alkyl halides, carboxylic acids, inorganic acids, sulfonic acids and mixtures thereof.
Dependencies are inferred from the claim text.