Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1993-02-22
1994-09-20
Pal, Asok
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502119, 502120, 502131, 526114, 526116, 526127, 526133, 526137, 526139, 526140, 526141, 526142, B01J 3100
Patent
active
053489250
ABSTRACT:
A solid component of catalyst, active in the polymerization of propylene and other .alpha.-olefins in stereoregular polymers, is obtained:
(i) by treating a non-activated silica support in particles with a tin tetrahalide, to at least partially block the hydroxylic groups of the silica and to obtain a blocked silica;
(ii) by impregnating the blocked silica with magnesium dialkyl or magnesium alkyl halide to make the magnesium compound react with the tin compound and with possible residual hydroxylic groups of the silica and to obtain a support;
(iii) by halogenating the support by contact with a halogenating agent selected from the halides of tin, antimonium or silicon to obtain a halogenated support;
(iv) by titanating the halogenated support with an excess of a titanium tetrahalide to obtain a titanated support;
(v) by putting the titanated support in contact with a Lewis base, to obtain a solid component of catalyst.
REFERENCES:
patent: 4252670 (1981-02-01), Caunt et al.
patent: 4301029 (1981-11-01), Caunt et al.
patent: 4471066 (1984-09-01), Sakurai et al.
patent: 5006620 (1991-04-01), Zolk et al.
Labianco Antonio
Luciani Luciano
Milani Federico
ECP Enichem Polimeri S.R.L.
Pal Asok
LandOfFree
Catalyst for the polymerization of olefins does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst for the polymerization of olefins, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst for the polymerization of olefins will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2429854