Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1979-10-12
1982-02-09
Smith, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526142, 526351, 526908, 526909, 526348, C08F 464, C08F 1006
Patent
active
043150900
ABSTRACT:
A titanium trichloride catalytic component obtained by separating it out of a solution consisting of titanium tetrachloride, an organic ether compound and an organo-aluminum compound dissolved in a solvent. The solvent is a mixture consisting of a saturated aliphatic hydrocarbon and/or an alicyclic hydrocarbon with 20 to 70% by volume of a concomitant aromatic hydrocarbon halide included therein. The organo-aluminum compound, the titanium tetrachloride and the organic ether compound is added to this mixed solvent at a solvent temperature not exceeding 55.degree. C. Following this, the solvent temperature is raised up to a value between 45.degree. and 150.degree. C. over a period of 10 minutes to 24 hours with an organic ether compound and/or titanium tetrachloride further added during this temperature raising process to obtain thereby a titanium trichloride catalytic component having average particle diameter between 10 and 1000.mu.. Then homo- or co-polymerization of .alpha.-olefin is carried out by using a catalyst system comprising this catalytic component and an organo-aluminum compound.
REFERENCES:
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patent: 4085064 (1978-04-01), Wristus
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.
Sunada Yoichi
Takahashi Yoshikazu
Takitani Masaru
Smith Edward J.
Toyo Stauffer Chemical Co., Ltd.
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