Patent · US Expired

Method for producing homopolymers and copolymers of isobutene

US6852808B2 · kind B2 · utility

3Cited by

12References

19Claims

0Family size

Assignee

BASF SE

Inventors

Stephan Huffer · Birkenfeld, DE
Hans Peter Rath · Havelsee, DE
Gabriele Lang · Mannheim, DE
Jens Kremeskotter · Ludwigshafen, DE
Elmar Stockelmann · Bad Kötzting, DE

Key dates

Filing date	May 24, 2002
Grant date	Feb 8, 2005
Priority date	—
Expiry date	Jun 24, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S526/918
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Homo- and copolymers of isobutene are prepared by continuous cationic polymerization of isobutene or mixtures of isobutene with ethylenically unsaturated comonomers in the presence of an initiator system comprising:

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