Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1980-10-17
1981-12-15
Levin, Stanford M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
260 336PQ, 526351, 526902, 526905, 526907, C08F 466, C08F 464
Patent
active
043060471
ABSTRACT:
A TiCl.sub.3 olefin polymerization catalyst component is prepared by reducing TiCl.sub.4 with an aluminum trihydrocarbyl compound in a molar ratio of Ti:Al of 2.7:1 to 4.0:1 in the presence of diisoamyl ether and a hydrocarbon solvent by gradually adding TiCl.sub.4 to the aluminum trihydrocarbyl compound and at least a substantial proportion of the diisoamyl ether at a temperature of from 15.degree. to 50.degree. C. during a period of from 0.7 to 2.5 hours to produce a precipitate of TiCl.sub.3, and thereafter converting the precipitate into active TiCl.sub.3 by heating at a temperature of from 80.degree. to 110.degree. C. during at least 30 minutes. The active TiCl.sub.3, when combined with a conventional organoaluminum cocatalyst, provides a stereospecific catalyst for the polymerization of alpha monoolefins having high activity, good morphology and good stereospecificity.
REFERENCES:
patent: 3769233 (1973-10-01), Hermans et al.
patent: 3784481 (1974-01-01), Lassau et al.
patent: 3864278 (1975-02-01), La Heis et al.
patent: 4007133 (1977-02-01), Rust et al.
patent: 4060593 (1977-11-01), Kazuo et al.
patent: 4110248 (1978-08-01), Sandis et al.
patent: 4115532 (1978-09-01), Yamaguchi et al.
patent: 4115533 (1978-09-01), Yamaguchi et al.
patent: 4195069 (1980-03-01), Kortbeek et al.
patent: 4210738 (1980-07-01), Hermans et al.
Kortbeek Andras G. T. G.
van der Linden-Lemmers Wilhelmina J. M.
Baer Martin S.
Levin Stanford M.
Shell Oil Company
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