12-12-2019 дата публикации
Номер: US20190375862A1
The various embodiments provide, a magnesium titanium polymerization procatalyst, and methods for making and using the same. 1. A process to prepare an olefin polymerization procatalyst comprising a Ti complex , said process comprising:{'sub': '2', 'claim-text': [{'sub': '5-12', 'i) a Mg compound chosen from butylethyl magnesium (BEM), dibutyl magnesium, and butyloctyl magnesium (BOM), a solvent chosen from Calkanes, or mixtures thereof,'}, 'ii) reactive organic chloride or HCl;, 'a) forming a delta form MgClspecies by combining'}and wherein the mole ratio of added Cl and Mg is from 2.1 to 2.3;{'sub': 2', 'x', '3−x', 'y', '3−y', 'x', '3−x', 'y', '3−y, 'sup': 1', '4', '5', '1', '4', '5, 'b) adding to said delta form MgClspecies prepared in step a), an aluminum alkyl halide of the formula RAlXfirst, a tetravalent titanium compound second, followed by an alkyl aluminum alkoxide of the formula RAlOR, wherein the Al/Ti molar ratio when measuring Al supplied from RAlXonly is from about 0.7 to about 1 and the Al/Ti molar ratio when measuring Al supplied from RAlORis from about 1 to about 2;'}and further whereinthe Mg/Ti molar ratio is from about 5 to about 10;x is 1 or 2;y is 1 or 2;{'sup': '1', 'sub': '1-8', 'each Ris independently chosen from Calkyl radicals;'}{'sup': 2', '3, 'sub': 3', '3', '4, 'the tetravalent titanium compound is chosen from TiRX, Ti(OR)X, TiX, and mixtures thereof;'}each X is independently chosen from the halogen radicals;{'sup': '2', 'sub': '1-8', 'each Ris independently chosen from Calkyl radicals and benzyl; and'}{'sup': 3', '4', '5, 'sub': '1- 8', 'each R, Rand Rare independently chosen from Calkyl radicals wherein no filtration or washing steps are performed during or after the formation of the catalyst.'}2. The process of claim 1 , wherein the reactive organic chloride is tertiary-butylchloride (tBuCl).3. The process of claim 1 , wherein step a) is performed at a temperature between about 20° C. and about 160° C.4. The process of claim 1 , ...
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