Process for polymerizing propylene

Details Process for polymerizing propylene Process for polymerizing propylene

1979-01-22

1981-03-24

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, 526119, 526139, 526140, 526141, 526142, 526158, 526159, 526351, C08F 466, C08F 1006

Patent

active

042581613

ABSTRACT:
Propylene is polymerized in the presence of a catalytic system of the type which comprises a solid titanium trichloride-based complex serving as a catalyst, said complex having an atomic ratio of aluminum to titanium in the range of below 0.15:1 and containing a complexing agent, and an organic aluminium compound of the general formula, AlR.sub.n.sup.1 Cl.sub.3-n wherein R.sup.1 represents an n-propyl group or an n-hexyl group and n is a value of 1.95-2.10. The catalytic system may further comprise an electron-donor compound as a third catalytic component.

REFERENCES:
patent: 2971950 (1961-02-01), Natta et al.
patent: 3197452 (1965-07-01), Natta et al.
patent: 4060593 (1977-11-01), Kazuo et al.
patent: 4123387 (1978-10-01), Shiga et al.
patent: 4127504 (1978-11-01), Ueno et al.
patent: 4127505 (1978-11-01), Ueno et al.
patent: 4136243 (1979-01-01), Appleyard et al.
patent: 4151112 (1979-04-01), Wristers

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