B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 35/10 (2006.01) B01J 27/135 (2006.01) B01J 27/138 (2006.01) B01J 35/02 (2006.01) C01F 5/30 (2006.01) C08F 4/02 (2006.01) C08F 10/00 (2006.01)
Patent
CA 2056791
The invention concerns porous particles of MgCl2, which appear under the microscope in the form of more or less regular polyhedrons, with six or eight plane surfaces. Sets of two symmetrically opposed plane surfaces are more or less parallel, and two elongated large plane surfaces, forming the top and bottom of the polyhedron are such that, in each, first of all, the greatest diagonal (D) is greater than the smallest distance (d) separating two opposite sides, and secondly, that these elongated plane surfaces are surrounded more or less perpendicularly by the other more or less rectangular sides forming the sides of the said polyhedron, the length of the smallest side (e) of each of the more or less rectangular sides being less than the smallest distance (d) separating the two opposite sides of the elongated large sides. These particles impregnated with transition metal compound are used as a catalytic compound in the polymerization of olefins.
L'invention concerne des particules poreuses de MgCl2 se présentant, au microscope, sous la forme de polyèdres sensiblement réguliers à six ou huit faces, dont les faces deux à deux symétriquement opposées sont sensiblement parallèles et dont deux grandes faces allongées formant la face du dessus et la face du dessous du polyèdre, sont, d'une part, telles que, dans chacune, la plus grande diagonale (D) soit supérieure à la plus petite distance (d) séparant deux côtés opposés, et sont, d'une part, entourées sensiblement perpendiculairement par les autres faces sensiblement rectangulaires formant les cotés dudit polyèdre, la longueur du plus petit côté (e) de chacune desdites faces sensiblement rectangulaires étant inférieure à la plus petite distance (d) séparant les deux côtés opposés des grandes faces allongées. Ces particules imprégnées de composé de métal de transition servent de composante catalytique dans la polymérisation des oléfines.
Brun Claude
Duranel Laurent
Soto Thierry
Spitz Roger
Atochem
Robic
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