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:
May. 20, 1997
Filed:
Mar. 27, 1995
Nicola Zandona, Waterloo, BE;
Solvay (Soci et e Anonyme), Brussels, BE;
Abstract
Catalytic solid for the (co)polymerisation of at least one olefin, comprising a coprecipitate of magnesium and of at least one transition metal, obtained by means of a process comprising the preparation of a mixture of a magnesium compound, such as the chloride or a magnesium alcoholate, and of a compound denoted by one of the formulae MY.sub.x (O--R').sub.t-x and M'O.sub.y (O--R').sub.s-2y and the treatment of the resulting mixture with a complex of formula M'(A)Al.sub.2 (X',X').sub.8 where X' and X' denote halogens, M and M' transition metals of groups IVB and VB, M' a transition metal of group IVB, A an aromatic hydrocarbon, Y a halogen or a group (O--R''), and R', R' and R'' an alkyl, aryl or cycloalkyl group.