Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1981-09-10
1983-05-03
Garvin, Patrick
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252441, 526125, 423498, C08F 464, C08F 402
Patent
active
043820190
ABSTRACT:
This invention relates to pretreating the support material for a polymerization catalyst comprising magnesium chloride with an active hydrogen compound such as an organic acid phosphate or a phenol in order to transform substantially elemental magnesium and other impurities. The impure magnesium chloride originates as a by-product from the manufacture of magnesium alkyls by the reaction of alkyl chlorides with elemental magnesium. Succeeding steps are activating the support material with an electron donor and treating the activated product with a titanium halide.
The invention also includes the novel catalytic component containing titanium halide, itself, the process for making that component, use of this catalytic system for polymerizing olefins such as propylene, and the purification step for magnesium chloride, itself.
REFERENCES:
patent: 3412174 (1968-11-01), Kroll
patent: 4085276 (1978-04-01), Toyota et al.
patent: 4149990 (1979-04-01), Giannini et al.
patent: 4186107 (1980-01-01), Wagner
patent: 4243552 (1981-01-01), Welch et al.
patent: 4312782 (1982-01-01), Mink et al.
Garvin Patrick
Stauffer Chemical Company
LandOfFree
Purified catalyst support does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Purified catalyst support, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purified catalyst support will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1208499