Patent · US Expired

Cycloolefin polymers

US5856414A · kind A · utility

4Cited by

5References

6Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Wilfried Hatke · Hofheim, DE
Frank Osan · Kelkheim, DE

Key dates

Filing date	Sep 17, 1997
Grant date	Jan 5, 1999
Priority date	—
Expiry date	Sep 17, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S526/943
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a cycloolefin polymer having a solution viscosity >0.25 dl/g and containing polymerized units of at least one cycloolefin and, if desired, polymerized units of one or more acyclic olefins, wherein the cycloolefin polymer has at one or both ends an olefinically unsaturated group having at least 3 carbon atoms.

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