Catalytic components and catalysts for the polymerization of ole

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

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526142, C08F 464

Patent

active

041771605

ABSTRACT:
There are disclosed new catalysts for the stereospecific polymerization of alpha-olefins having the formula CH.sub.2 .dbd.CHR in which R is an alkyl radical containing from 1 to 4 carbon atoms and the starting components of which comprise (a) a halogenated organometallic Al compound and (b) reduction products of TiCl.sub.4 comprising TiCl.sub.3 in the crystalline beta form.

REFERENCES:
patent: 3669948 (1972-06-01), Konotsune et al.
patent: 3984350 (1976-10-01), Karayannis et al.
patent: 4007133 (1977-02-01), Rust et al.

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