Patent · US Active

Boron trifluoride-catalyst complex and process for preparing high-reactivity isobutene homopolymers

US8853336B2 · kind B2 · utility

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16Claims

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Assignee

BASF SE

Inventors

Thomas Wettling · Schifferstadt, DE
Stefan Hirsch · Neustadt, DE
Markus Brym · Schifferstadt, DE
Markus Weis · Ludwigshafen, DE

Key dates

Filing date	Feb 15, 2013
Grant date	Oct 7, 2014
Priority date	—
Expiry date	Feb 15, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F110/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A catalyst complex composed of boron trifluoride and a cocatalyst mixture of 10 to 90% by weight of a monohydric primary C1- to C20-alcohol and 90 to 10% by weight of a monohydric secondary C3- to C20-alcohol, where the molar ratio of boron trifluoride to the sum of all alcohols is 2:1 to 1:10. This catalyst complex is used in the preparation of high-reactivity isobutene homopolymers having a number-average molecular weight of 300 to 50 000, using, as the feedstock, a C4 hydrocarbon mixture comprising at least 20% by weight of isobutene and a total of at least 10% by weight of other C4 olefins.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.