Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1977-03-14
1978-10-31
Garvin, Patrick
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
526137, 526142, C08F 464
Patent
active
041233875
ABSTRACT:
A solid catalyst for olefin polymerization which is obtained by the catalytic treatment of a titanium trichloride composition with a mixture of a halogenated hydrocarbon and an ether, the composition being produced by subjecting a solid reduction product, which is obtained by reduction of titanium tetrachloride with an organo-aluminum compound, to heat treatment or to catalytic treatment with a specific organo-aluminum compound, aluminum halide, an ether and the like. In the polymerization of an olefin, combined catalyst systems of this solid catalyst and organo-aluminum compounds as activators can be used for efficient production of olefin polymers having a high crystallinity.
REFERENCES:
patent: 3131171 (1964-04-01), Calfee
patent: 3354139 (1967-11-01), Vandenberg
patent: 3530107 (1970-09-01), Yoshidra et al.
patent: 3701763 (1972-10-01), Wada et al.
patent: 3769233 (1973-10-01), Hermans et al.
patent: 3984350 (1976-10-01), Karayannis et al.
Fukui Yoshiharu
Matsumura Kazuhiro
Ohkawa Masahisa
Sasaki Toshio
Shiga Akinobu
Garvin Patrick
Sumitomo Chemical Company Limited
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