Patent · US Active

Process for the production of isoolefin polymers with improved initiator system preparation

US11578157B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Arlanxeo Deutschland GmbH · DE

Inventors

Hanns-Ingolf Paul · Leverkusen, DE
Rolf Feller · Mettmann, DE
Udo Wiesner · Bornheim, DE
Carsten Kreuder · Sarnia, CA
Adam Gronowski · Sarnia, CA
Ricarda Leiberich · Langen, DE
Joachim C. Ritter · Wilmington, US

Key dates

Filing date	Jul 6, 2018
Grant date	Feb 14, 2023
Priority date	—
Expiry date	Apr 6, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2400/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

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 prepared by continuously contacting at least one boron or aluminium compound and at least one initiator.

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