Patent · US Expired

Cycloolefin polymers

US5623039A · kind A · utility

6Cited by

4References

5Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

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

Key dates

Filing date	Jul 11, 1995
Grant date	Apr 22, 1997
Priority date	—
Expiry date	Jul 11, 2015

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.