Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1995-04-07
2000-09-19
Wu, David W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526114, 526116, 526119, 5261242, 5261251, 5261257, 526357, C08F 218
Patent
active
061213934
ABSTRACT:
A process for polymerizing an alpha-olefin using either a catalyst formed by contacting a highly active solid titanium catalyst component, an organo-metallic compound of a metal of Group 1 to 3 of the periodic table, an organic halogen compound or a transition metal compound, and an organosilicon compound or a sterically hindered amine in an inert medium in the absence of an alpha olefin, or a catalyst prepared by preliminarily polymerizing an alpha olefin in the presence of a catalyst comprising the above four catalyst components, provided that the last one is an optional component. This process achieves the industrially advantage that the catalysts are highly active, and give a polymer having excellent stereoregularity.
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Translation of Mitsui (907).
Kashiwa Norio
Kimura Tomohiko
Kioka Mamoru
Sotoyama Toshiki
Tomura Mitsuo
Choi Ling-Siu
Mitsui Chemicals
Wu David W.
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