Patent · US Expired

Method for polymerizing polar substituted cycloalkenes

US6891007B2 · kind B2 · utility

1Cited by

9References

2Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Karl-Heinz Aleksander Ostoja Starzewski · Bad Vilbel, DE
Karin Weiss · Bayreuth, DE
Martin Thüring · Merenschwand, CH

Key dates

Filing date	Mar 19, 2001
Grant date	May 10, 2005
Priority date	—
Expiry date	May 13, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F279/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This invention relates to a process for polymerizing polar substituted norbornenes and/or cycloalkenes, optionally, in the presence of another unsaturated compound. The method is characterized in that the polymerization is carried out in the presence of one or more tungsten carbine complexes.

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