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:
Nov. 16, 1976
Filed:
Aug. 21, 1975
Paul Schneider, Ludwigshafen, DT;
Hans Schick, Mannheim, DT;
Heinz Mueller-Tamm, Ludwigshafen, DT;
Peter Hennenberger, Ludwigshafen, DT;
BASF Aktiengesellschaft, Ludwigshafen (Rhine), DT;
Abstract
A process for the manufacture of a modified titanium-containing component of a catalyst for the polymerization of a .alpha.-monoolefins by the Ziegler-Natta method wherein (a) a compound containing titanium and (b) a compound containing phosphorus are ground dry in a vibratory ball mill. It is characteristic of the process that (1) a mill of relatively large useful volume is employed, (2) the mill is first charged with the compound (a) containing titanium, (3) while grinding the material at a low temperature, the compound (b) containing phosphorus is added gradually, thereafter (4) the material is gradually brought to a higher temperature, while continuing the grinding, and is kept at about this temperature for a prolonged period, then (5) a finely particulate 1-alkene polymer having a particular glass transition temperature and a particular intrinsic viscosity is added to the material and finally (6) the material is kept at a low temperature for a prolonged period, while continuing the grinding.