Process for preparing highly stereoregular polymers or copolymer

Details Process for preparing highly stereoregular polymers or copolymer Process for preparing highly stereoregular polymers or copolymer

1976-02-10

1978-04-18

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 252429C, 526125, 526127, 526128, 526351, C08F 402, C08F 1006

Patent

active

040852768

ABSTRACT:
Highly stereoregular polymers or copolymers of .alpha.-olefins containing at least 3 carbon atoms are prepared in high yields by polymerizing or copolymerizing the .alpha.-olefins in the presence of a catalyst composed of (a) an improved solid transition metal catalyst component prepared by reacting (1) a magnesium-containing reaction product derived from a member of the group consisting of (i) a magnesium halide, (ii) an active hydrogen-containing compound, (iii) an organic acid ester and (iv) a silicon or tin compound containing at least one halogen atom or hydrocarbon group bonded directly to silicon or tin with (2) a titanium compound, and (b) an organometallic compound of a metal selected from aluminum, magnesium and zinc.

REFERENCES:
patent: 3642746 (1972-02-01), Kashiwa et al.
patent: 3718636 (1973-02-01), Stevens et al.

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