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:
Jan. 16, 2001
Filed:
Jul. 02, 1998
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
C,-C,-Alk-1-enes are polymerized by means of a Ziegler-Natta catalyst system in a reactor cascade comprising at least two reactors, a homo- or copolymer of C,-C,-alk-1-enes being prepared in a reactor R,, upstream of which one or more further reactors may be connected, the reaction mixture being discharged from R,and transferred to a subsequent reactor R,and the polymerization in R,and in the reactors which may be connected to R,being carried out in the presence of a liquid or dissolved regulator for regulating the catalyst activity, by a process in which the regulator is added to the reaction mixture after discharge from R,and before entry into R,, and an apparatus for polymerizing C,-C,-alk-1-enes by means of the novel process is described.