Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1996-11-04
2000-05-16
Wu, David W.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502117, 502125, 502127, 502159, 526201, 526203, B01J 3100
Patent
active
060637250
ABSTRACT:
An olefin polymerization catalyst system comprising an organic transition metal compound and a support, wherein an organic transition metal compound is soluble in an inert organic solvent and a support which is insoluble in the inert organic solvent, and the support comprises an organic high molecular weight compound which contains a specific carbonyl-containing group. The catalyst system can polymerize an olefin in a high activity, provides polymer with high stereoregularity, prevents adhesion or fouling of the polymer generated in the course of polymerization or an organic aluminum oxy compound on the inner wall of the reactor, leads to high bulk density of the polymer and very reduced level of fisheye and/or gel generation on the processed item, can maintain high productivity, can manufacture high quality product, and thus provides extremely high contribution in industry.
REFERENCES:
patent: 5057475 (1991-10-01), Canich
patent: 5362824 (1994-11-01), Furtek et al.
patent: 5587439 (1996-12-01), DiMaio
Bochkin et al, Polymer Science USSR, "Polymerization of Ethylene Under the Influence of Ti/Mg Catalysts Immobilized on Polymer Carriers", vol. 29, No. 7, 1987, pp. 1485-1491, XP000020420.
Chemical Abstracts, vol. 92, No. 2, 1980, Columbus, OH, Abstract No. 7200y, Costache: "Polymerizing and Copolymerizing Olefins", p. 19, col. 1, XP00204809 *Abstract*.
Polymer Science USSR, vol. 22, 1980, Oxford, pp. 372-382, XP002024808, Kabanov: "Gel Immobilized Complexed Metal Catalysts for the Polymerization of Ethylene".
Asanuma Tadashi
Ishii Yukio
Sunaga Tadahiro
Mitsui Chemicals Inc.
Rabago Roberto
Wu David W.
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