Patent · US Expired

Highly crystalline propylene homopolymers

US7022795B1 · kind B1 · utility

8Cited by

3References

9Claims

0Family size

Assignee

Novolen Technology Holdings, C.V. · NL

Inventors

Stephan Huffer · Birkenfeld, DE
Joachim Rosch · Ludwigshafen, DE
Stefan Seelert · Bischofswerda, DE
Franz Langhauser · Bad Dürkheim, DE
Dieter Lilge · Schifferstadt, DE
Roland Hingmann · Ladenburg, DE
Gunther Schweier · Osthofen, DE

Key dates

Filing date	Mar 13, 1998
Grant date	Apr 4, 2006
Priority date	—
Expiry date	Mar 13, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F110/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Propylene homopolymers, wherein, in their separation according to tacticity by first dissolving the polymers in boiling xylene, then cooling the solution to 25° C. at a cooling rate of 10° C./h and then, with ascending temperature, separating the propylene homopolymers into fractions of different tacticity, either one or more of the conditions that

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