Patent · US Active

Preparation of isobutene homo- or copolymer derivatives

US9296841B2 · kind B2 · utility

1Cited by

8References

28Claims

0Family size

Assignee

BASF SE

Inventors

Hannah Maria König · Mannheim, DE
Klaus Mühlbach · Grünstadt, DE
Helmut Mach · Heidelberg, DE
Ulrich Eichenauer · Frankfurt, DE

Key dates

Filing date	Nov 28, 2011
Grant date	Mar 29, 2016
Priority date	—
Expiry date	May 9, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F210/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for preparing isobutene homo- or copolymer derivatives by (i) polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an iron halide-donor complex, an aluminum trihalide-donor complex, or an alkylaluminum halide-donor complex, (ii) reacting a resulting high-reactivity isobutene polymer with a compound which introduces a low molecular weight polar group or a substructure thereof, and (iii) in the case of reaction with a substructure, further reacting to complete the formation of the low molecular weight polar group. The homo- or copolymer derivatives include a radical of a hydrophobic polyisobutene polymer having a number-average molecular weight of 110 to 250,000 and low molecular weight polar groups including amino functions, nitro groups, hydroxyl groups, mercaptan groups, carboxylic acid or carboxylic acid derivative functions, sulfonic acid or sulfonic acid derivative functions, aldehyde functions and/or silyl groups.

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