Diethers usable in the preparation of Ziegler-Natta catalysts

Details Diethers usable in the preparation of Ziegler-Natta catalysts Diethers usable in the preparation of Ziegler-Natta catalysts

1990-10-11

1992-03-10

Cintins, Marianne

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568609, 568611, 568641, 568648, 568662, 568670, 568672, C07C 43115, C07C 4318, C07C 4320

Patent

active

050951530

ABSTRACT:
Diethers of general formula: ##STR1## where R, R.sup.I, R.sup.II, R.sup.III, R.sup.IV and R.sup.V are the same or different and are H, C.sub.1-18 linear or branched alkyl, C.sub.5-18 cycloalkyl, C.sub.6.about. aryl, C.sub.7-18 alkylaryl or C.sub.7-18 arylalkyl radicals, provided that when R is alkyl, R.sup.I is other than H or alkyl and when R.sup.I is alkyl, R is other than H or alkyl; R.sup.VI and R.sup.VIII are the same or different and are C.sub.1-18 linear or branched alkyl, C.sub.5-18 cycloalkyl, C.sub.6-18 aryl, or C.sub.7-18 arylalkyl radicals; and two or more of R to R.sup.V may be bonded to form a cyclic structure having 5 to 18 carbon atoms.
The diethers are particularly useful in the preparation of Ziegler-Natta catalysts.

REFERENCES:
patent: 4374282 (1983-02-01), Maldonado et al.
Leboida et al., Chem. Abstracts, vol. 91, pp. 634, 1979.
Matsuzaki, K., et al., "Nuclear Magnetic Resonance Stuides on Poly(alkyl propenyl ether) and Model Compounds, 1, Conformational Analysis of Model Compounds", Macromolecules, vol. 14, pp. 1004-1008, 1981.
Whalon, Michael R., et al., "A Remarkable Consistency in Conformational Preference for a Series of 1,3-Disubstituted-2,2-Dimethylpropanes", Tetrahedron Letters, vol. 23, No. 50, pp. 5247-5250, 1982.
McAlees, Alan J., et al., "Complexes of Titanium Tetrachloride with Terdenate Tripod Ligands, Competition among Oxygen, Sulfur, and Nitrogen for Coordination Sites on Titanium", Inorganic Chemistry, vol. 15, pp. 1065-1074, 1976.

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