Patent · US Active

Cycloolefin copolymers, a process for their preparation and the use thereof and catalysts

US8236910B2 · kind B2 · utility

2Cited by

6References

16Claims

0Family size

Assignee

Topas Advanced Polymers GmbH · DE

Inventors

Dieter Ruchatz · Hasselroth, DE
Anne-Meike Schauwienold · Hamburg, DE
Peter Jörg · Neu-Isenburg, DE

Key dates

Filing date	Mar 19, 2008
Grant date	Aug 7, 2012
Priority date	—
Expiry date	Sep 10, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F4/6592
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Cycloolefin copolymers which are distinguished by the presence of racemic diads of repeating polycyclic units and additionally by racemic triads of repeating polycyclic units are described. These copolymers can be prepared by copolymerization of polycyclic olefins with linear olefins in the presence of metallocene catalysts which have no Cs symmetry in relation to the centroid-M-centroid plane. The novel copolymers can be used for the production of shaped articles, in particular of films.

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