Crystalline phases of Alf.sub.k (OH).sub.3-k and HAlF.sub.4

U.S. Patent Number: 5393509

Abstract: New crystalline phases of the fluoroaluminum compound AlF.sub.k (OH).sub.3-k and processes for their preparation and conversion to conventional phases, as well as isolation of solid HAlF.sub.4 are disclosed.

Inventors: Corbin; David R. (West Chester, PA), Herron; Norman (Newark, DE), Thorn; David L. (West Chester, PA)

Assignee: E. I. Du Pont de Nemours and Company (Wilmington, DE)

Application Number: 08/126,276

Issued: 1995-02-28

Expired: 2007-02-28

Classes: 423/465 ; 423/462; 423/472; 423/495; 423/629; 502/231

Field of search: 423/462,472,495,629,465 502/231,502

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