Magnesium chloride supported high mileage catalyst for olefin polymerization. VIII. Decay and transformation of active sites
β Scribed by Chien, James C. W. ;Kuo, Chi-I
- Publisher
- John Wiley and Sons
- Year
- 1985
- Weight
- 815 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0360-6376
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A systematic study has been made on the functions of external Lewis base (Be, methyl-p-toluate, MPT) and internal Lewis base (Bi, ethyl benzoate, EB) for the CW-catalyst system MgCl,/EB/PC/AlEt,/TiCl,-AlEt,/MF'T (PC, p-cresol). Bi is a nonstereoselective modifier. It increases the active site concen
## Abstract The reactions between AlEt~3~ and the modifiers, promoters, and coactivators of a typical magnesiumβchlorideβsupported, highβactivity propylene polymerization catalyst were studied. Infrared, MS analysis of the gas evolved, and GCβMS of the hydrolysis products for the reaction between A