Nonaborate compositions and their preparation
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United States of America Patent
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Jul 19, 2005
Grant Date -
Jun 12, 2003
app pub date -
Jan 18, 2001
filing date -
Jan 21, 2000
priority date (Note) -
Expired
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Abstract
A family of borate compounds containing an isolated (finite) nonaborate anion with the structural formula [B9O12(OH)6]3-;. Preferred amine nonaborate compounds have a resolved oxide formula of A2O.3B2O3.2H2O, where A is the monovalent cation of an amine salt, such as guanidinium and imidazolium. Also provided is a method for preparing these compounds by crystallization from an aqueous solution under mild conditions without the formation of significant amounts of by-products. These compounds have potential application as precursors for the production of advanced boron nitride ceramic materials, and as flame retardants, corrosion inhibitors, and biocides.
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