Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1975-01-20
1976-11-02
Poer, J.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
B01J 3102
Patent
active
039896412
ABSTRACT:
An olefine polymerization catalyst comprises (1) a solid transition metal compound, (2) an organo-compound of a non-transition metal compound, (3) a tetra-alkyl diamine and (4) a phosphine oxide derivative, wherein one of the compounds (3) and (4) has been milled with the transition metal compound. The catalyst system may optionally include a polyene. The catalyst combines good polymerization activity with a low yield of soluble polymer.
REFERENCES:
patent: 3554993 (1971-01-01), Moberly et al.
patent: 3580899 (1971-05-01), Massoubre
patent: 3639375 (1972-02-01), Staiger et al.
Imperial Chemical Industries Limited
Poer J.
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