The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2011
Filed:
Sep. 02, 2008
Jürgen Schwind, Bornheim, DE;
Horst Klassen, Erftstadt, DE;
Gerald Lutz, Köln, DE;
Robert Gelinas, Lake Charles, LA (US);
Klaus Berhalter, Bornheim, DE;
Ursula Krügers, Brühl, DE;
Jürgen Schwind, Bornheim, DE;
Horst Klassen, Erftstadt, DE;
Gerald Lutz, Köln, DE;
Robert Gelinas, Lake Charles, LA (US);
Klaus Berhalter, Bornheim, DE;
Ursula Krügers, Brühl, DE;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
Continuous feed of auxiliaries for the polymerization reaction of ethylene, propene, and other higher homologous olefins in the preparation of homo- and copolymers, avoiding production of inhomogeneities, such as lumps or chunks which are present because the condition of the auxiliaries is not suitable for precise metering, becomes possible when auxiliaries in paste or solid form, in particular antistatic auxiliaries, are subjected, prior to feed, to a heat treatment in the presence of a solvent at a temperature of from 20 to 80° C., and then recooled, and then fed to the polymerization reaction.