Process for making low crystallinity polyolefins

Details Process for making low crystallinity polyolefins Process for making low crystallinity polyolefins

1984-05-21

1985-09-10

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526348, 5263486, 526351, 502115, 423593, C08F 444, C01F 1100

Patent

active

045407568

ABSTRACT:
Disclosed is a solution polymerization process for obtaining high yields of high molecular weight, low crystallinity polymers of propylene and higher 1-olefins at low catalyst levels. The polymerization is carried out using a catalyst system containing a soluble transition metal component derived from magnesium carboxylate and a salt of titanium, zirconium or hafnium, and specified alkyl aluminum halide activators.

REFERENCES:
patent: 2956993 (1960-10-01), Nowlin et al.
patent: 3644318 (1972-02-01), Diedrich et al.
patent: 3933934 (1976-01-01), Bailly et al.
patent: 3951935 (1976-04-01), Engelmann
patent: 4133824 (1979-01-01), Malpass et al.
patent: 4168361 (1979-09-01), Oda et al.
patent: 4319010 (1982-03-01), van den Berg
patent: 4439537 (1984-03-01), Murai et al.
Abstract of Belgian Pat. No. 750,317.

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