Ziegler-Natta catalysts for ethylene and propylene polymerizations supported on the products of thermal desolvation of the adducts of magnesium chloride with methyl and ethyl alcohols

✍ Scribed by D.N. Taveira Magalhães; O. Do Coutto Filho; F.M.B. Coutinho

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 306 KB
• Volume: 27
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(91)90085-3

✦ Synopsis

MgCl 2 adducts with alcohols and ethers can be converted to more active supports through the elimination of the alcohol molecules from the adducts by thermal desolvation. Catalysts supported on the products of thermal desolvation of the MgCI: adducts with methyl and ethyl alcohols have been prepared. The supports were characterized by elemental analysis, X-ray diffraction and N2-BET surface area. The supports were used in the synthesis of Ziegler-Natta catalysts through single and double treatments with TiC14 and then evaluated in ethylene and propylene polymerizations.

MATC-I-2:

This catalyst was prepared as MATC-I-I.

After removal of the supernatant, the solid was suspended again in 100 ml of TiCl 4 and heated to reflux for 2 hr, and then the catalyst was worked up as MATC-I-1.