Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1976-03-11
1978-04-25
Garvin, Patrick P.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
526140, 526142, C08F 464
Patent
active
040861856
ABSTRACT:
A method for activating a catalyst for propylene polymerization before polymerization is proposed. According to this method, a catalyst which has stability at the time of use and reduces the ratio of amorphous polymer at the time of polymerization is obtained. Said method comprises causing a catalyst dispersion prepared by mixing a specified .delta.-type titanium trichloride composition and an alkylaluminum trichloride in an inert solvent and maintained at a temperature of 10.degree. to 50.degree. C, to absorb a small amount of propylene in an amount of 0.5 to 5 times by weight that of said .delta.-type titanium trichloride.
REFERENCES:
patent: 3029231 (1962-04-01), van Amerongen
patent: 3062801 (1962-11-01), Hoeg et al.
patent: 3067183 (1962-12-01), Hagemeyer et al.
patent: 3530107 (1970-09-01), Yoshioka et al.
patent: 3582987 (1971-06-01), Natta et al.
patent: 3639375 (1972-02-01), Staiger et al.
patent: 3701763 (1972-10-01), Wada et al.
patent: 3793295 (1974-02-01), Luciani et al.
patent: 3937691 (1976-02-01), Staiger et al.
patent: 3951858 (1976-04-01), Schick et al.
Shirai Isoo
Suzuki Takeshi
Takahashi Tsutomu
Chisso Corporation
Garvin Patrick P.
Philpitt Fred
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