Process for isolating tetraphenylborates

Details Process for isolating tetraphenylborates Process for isolating tetraphenylborates

1996-08-29

1997-12-02

Killos, Paul J.

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

Organic compounds

C07C 502

Patent

active

056938675

ABSTRACT:
Tetraphenylborates are obtained in an industrially advantageous grade by spray drying an organic, aqueous or organic-aqueous extract of the tetraphenylborates obtainable in the tetraphenylborates synthesis. It is advantageous to treat the specified extract prior to spray drying with pH-controlling auxiliaries and adsorbents to remove byproducts or to limit their formation. The process gives tetraphenylborates in a homogeneous technical grade, i.e. in a narrow particle size distribution and in a particular particle shape, which improves the dispersibility in the medium to be used.

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