Catalysts for the polymerization of olefins

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants

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252428, 252430, 252431R, 252431C, 252431N, 252431P, 526139, 526141, 526142, 526145, 526125, C08F 464, C08F 468

Patent

active

041742990

ABSTRACT:
New catalysts for the polymerization and copolymerization of olefins are described. The catalysts are prepared from new components which are complexes of the metals Mg, Mn and/or Ca with the transition metals Ti, V and/or Zr, plus an electron-donor compound.

REFERENCES:
patent: 3647772 (1972-03-01), Kashiwa
patent: 3694421 (1972-09-01), Vetter
patent: 3859231 (1975-01-01), Kochhar et al.
Lapporte et al., J. Org. Chem., 28 (Jul. 1963), pp. 1947-1948.

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