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US 2022/0017655 A1Published application
Process for the production of isoolefin polymers using a tertiary ether
AssigneeArlanxeo Singapore Pte. Ltd.
InventorDavid Thompson
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Abstract
The invention relates to an efficient process for the preparation of isoolefin polymers such as polyisobutene or butyl rubber by polymerization of isobutene and optionally further monomers in the presence of an initiator system comprising at least one boron or aluminium compound and at least one tertiary alkyl ether.
Claims20
A process for the preparation of isoolefin polymers, the process comprising the step of:
- a) providing a reaction medium comprising an organic diluent, at least one monomer being an isoolefin and an initiator system comprising
- at least one boron or aluminium compound and
- at least one tertiary ether
- and
- b) polymerizing the at least one monomer within the reaction medium in the presence of the initiator system to form a product medium comprising the isoolefin polymer, the organic diluent and optionally residual monomer(s).
2 more elements
Dependencies are inferred from the claim text.