Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1991-10-09
1993-03-09
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502119, 502122, 502127, 526124, 526125, C08F 4649, C08F 4654
Patent
active
051927292
ABSTRACT:
A highly active Ziegler-Natta catalyst for polymerizing HDPE and LLDPE at low temperature and pressure may be prepared by reacting a magnesium compound and a halogen compound with an electron donor compound to dissolve, reacting the resulting solution with a titanium compound to obtain the homogeneous solution and then adding a small quantity of surfactant to the homogeneous solution. Ethylene polymers and copolymers were prepared by activating the resulting catalyst to obtain the granular polymer having density of from 0.92 to 0.98 g/cm.sup.3 and in which the particle size distribution was narrow.
REFERENCES:
patent: 4124532 (1978-11-01), Giannini et al.
patent: 4591577 (1986-05-01), Sato et al.
The Condensed Chemical Dictionary, Fifth Edition (1956), POB by Reinhold Publishing Corp.
Kim Il
Woo Seong I.
Garvin Patrick P.
Korea Advanced Institute of Science and Technology
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