Patent · US Active

Process for preparing high-reactivity isobutene homo- or copolymers

US10975180B2 · kind B2 · utility

0Cited by

3References

13Claims

0Family size

Assignee

BASF SE

Inventors

Rosa Corberan Roc · Ludwigshafen, DE
Klaus Muehlbach · Havelsee, DE
Thomas Wettling · Schifferstadt, DE
Sergei V. Kostjuk · Minsk, BY
Irina Vasilenko · Minsk, BY
Dmitryi Shiman · Minsk, BY

Key dates

Filing date	Feb 13, 2017
Grant date	Apr 13, 2021
Priority date	—
Expiry date	Jan 7, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2500/01
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol %, which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or an alkylaluminum halide-donor complex effective as a polymerization catalyst, wherein the aluminum trihalide or alkylaluminum halide is treated with at least one inorganic hydrate.

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