Patent · US Expired

Catalyst system for gas phase polymerization of conjugated dienes

US6576727B1 · kind B1 · utility

1Cited by

3References

10Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Michael Dauben · Neuss, DE
Jürgen Schneider · Kirchzarten, DE
Gerd Sylvester · Leverkusen, DE
Nobert Steinhauser · Monheim, DE

Key dates

Filing date	Jul 13, 2000
Grant date	Jun 10, 2003
Priority date	—
Expiry date	May 24, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F4/52
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a catalyst system for gas phase polymerization of conjugated dienes, consisting of a rare earth compound, an aluminum organic compound, a further Lewis acid, optionally a conjugated diene, an inert inorganic or organic support and a co-catalyst applied to an inorganic support, in order to improve the flowability of rubber thus produced.

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