Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1982-02-17
1983-10-25
Garvin, Patrick
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502129, 502133, 526123, 526124, C08F 464
Patent
active
044118210
ABSTRACT:
Improved 1-olefin polymerization catalyst system, and process employing same, comprising a reaction product of alumina and an organometallic compound of the formula (RCH.sub.2).sub.4 M wherein M is Ti, Zr or Hf and R is a group which is such that there is no hydrogen atom attached to an atom which is in the .beta.-position to M, the improvement characterized in that the preformed catalyst system is controlled in its mode of action and is protected from impurities by mixing with it an oxide, hydroxide, or carbonate of magnesium, calcium, strontium, or barium.
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E. I. Du Pont de Nemours and Company
Garvin Patrick
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