Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1978-09-05
1983-08-23
Smith, Edward J.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252429C, 526119, C08F 464, C08F 1000
Patent
active
044003013
ABSTRACT:
A solid compound of a transition metal is ground in the presence of aluminium chloride, titanium tetrachloride and at least one organo-Lewis Base compound. The transition metal compound is typically titanium trichloride. The Lewis Base compound is an organo-phosphorus compound, preferably one which also contains nitrogen, such as 2-dimethylamino-1,3-dimethyl-1,3,2-diazaphospholidine-2-oxide or an organo-sulphur compound such as diphenyl sulphone. The solid compound of the transition metal may include aluminium chloride and if the amount of this aluminium chloride is at least 50% molar, there is no need to make a separate addition of aluminium chloride to the mixture which is ground. The ground product can be used as a component of an olefine polymerization catalyst.
REFERENCES:
patent: 3494873 (1970-02-01), Vohwinkel et al.
patent: 4111834 (1978-09-01), Caunt et al.
patent: 4136243 (1979-01-01), Appleyard et al.
Candlin John P.
Caunt Anthony D.
Williams Ian G.
Imperial Chemical Industries plc
Smith Edward J.
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