Patent · US Expired

Method for the suspension polymerization of conjugated dienes

US6350833B1 · kind B1 · utility

2Cited by

2References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Thomas Knauf · Dormagen, DE
Gerd Sylvester · Leverkusen, DE
Claudia Schmid · Leichlingen, DE
Akhtar Osman · Sarnia, CA

Key dates

Filing date	Apr 20, 2000
Grant date	Feb 26, 2002
Priority date	—
Expiry date	Apr 20, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F36/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This invention relates to a method for the suspension polymerization of conjugated dienes in hydrocarbon mixtures comprising a fraction by volume greater than 80% of C4 hydrocarbons wherein polymerization is conducted in the presence of a rare earth compound, of one or more aluminum compounds, and optionally of an additional Lewis acid. The invention further relates to the polymers which can be produced according to the present invention and to the use thereof for the production of moldings of all types, particularly tires and industrial rubber products, and for blending with polystyrene (HIPS).

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