Method of producing rare earth salt of dialkyl phosphate or...

Details Method of producing rare earth salt of dialkyl phosphate or... Method of producing rare earth salt of dialkyl phosphate or...

2011-03-15

2011-03-15

Gonzalez, Porfirio Nazario (Department: 1621)

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

Organic compounds

Rare earth containing

C556S024000

Reexamination Certificate

active

07906631

ABSTRACT:
There is provided a method of producing a rare earth salt of a dialkyl phosphate or a rare earth salt of dioleyl phosphate of a high purity useful as a polymerization catalyst of a conjugated diene compound by directly reacting a rare earth oxide or a rare earth hydroxide with a dialkyl phosphate or dioleyl phosphate of a high purity. In the invention, the rare earth oxide or rare earth hydroxide is reacted with the dialkyl phosphate or dioleyl phosphate of a high purity in a non-polar solvent in the presence of at least one compound selected from a halogenated hydroacid, phosphorous acid and a rare earth halide made from the same element as in an objective product as a catalyst.

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