Patent · US Expired

Polyisobutenyl ethers and thioethers

US6958382B2 · kind B2 · utility

5Cited by

4References

14Claims

0Family size

Assignee

BASF SE

Inventors

Arno Lange · Bad Dürkheim, DE
Helmut Mach · Heidelberg, DE
Darijo Mijolovic · Mannheim, DE
Hans Peter Rath · Havelsee, DE

Key dates

Filing date	Nov 3, 2003
Grant date	Oct 25, 2005
Priority date	—
Expiry date	Nov 3, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F8/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for preparing polyisobutenyl (thio)ethers by reacting a polyisobutene epoxide having at least one terminal epoxide group with itself, with other epoxides and/or with nucleophiles selected from among alcohols and thiols in the presence of a Lewis-acid compound as catalyst and/or a cationic photoinitiator with illumination is described. The side reaction of the rearrangement of the epoxide to the polyisobutenyl aldehyde is suppressed. In addition, a curable composition comprising a polyisobutene epoxide, an epoxide different therefrom and optionally a poly(thi)ol is also described.

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