Use of an aluminum-based adsorbent including alkalines and...

Details Use of an aluminum-based adsorbent including alkalines and... Use of an aluminum-based adsorbent including alkalines and...

B - Operations, Transporting

01

J

252/116, 402/590

B01J 20/04 (2006.01) C07C 7/12 (2006.01) C08J 3/00 (2006.01)

Patent

CA 2007937

The invention relates to the use of an adsorbent for the purification of olefins and more specifically for the purification of the polyolefins obtained by a process of polymerization in the presence of coordination catalysts. This adsorbent, which has a remarkably weak ability to isomerize olefins, is characterized in that it comprises an alumina and at least one compound of an element selected from the group consisting of the alkalines and earth-alkalines, the concentration of this element being between 15 mmole and 100 mmole per 100 g of alumina.

L'invention concerne l'utilisation d'un adsorbant pour la purification d'oléfines et plus particulièrement pour la purification des polyoléfines obtenues par un procédé de polymérisation en présence de catalyseurs de coordination. Cet adsorbant qui présente un pouvoir isomérisant des oléfines remarquablement faible, est caractérisé en ce qu'il comprend une alumine et au moins un composé d'un élément choisi dans le groupe constitué par les alcalins et les alcalino-terreux, la concentration de cet élément étant comprise entre 15 mmole et 100 mmole par 100 g d'alumine.

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