Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1994-06-28
1998-04-28
Wood, Elizabeth D.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502102, 502108, 502109, 502112, 502115, 502116, 502118, B01J 3100
Patent
active
057444145
ABSTRACT:
The present invention relates to a process for the preparation of a solid catalytic component of a catalyst of Ziegler-Natta type, comprising contacting (i) at least one compound (A) of a transition metal (TM) with (ii) a solid product (B) comprising a magnesium compound and having a reducing power for the transition metal (TM), in the presence of (iii) at least one olefin under conditions such that the olefin at least partially polymerizes during the contacting. The solid catalytic component is particularly useful for producing ethylene (co-)polymers in a gas phase process and for improving the statistical distribution of the comonomer in the copolymer structure.
REFERENCES:
patent: 4123386 (1978-10-01), Avaro et al.
patent: 4302567 (1981-11-01), Bahadir et al.
patent: 4387201 (1983-06-01), Bahadir et al.
patent: 4442225 (1984-04-01), Takitani et al.
BP Chemicals Limited
Wood Elizabeth D.
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