Fracturing method using polyboronic compound
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United States of America Patent
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Jan 3, 2017
Grant Date -
Aug 29, 2013
app pub date -
Jan 8, 2013
filing date -
Oct 21, 2008
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Abstract
Polyboronic compounds useful as delayed crosslinking agents may be produced by using a polyamine as base scaffold and incorporating boron via reaction with intermediate borates which may be formed in the condensation reaction between boric acid and a diol. A di-aldehyde, such as glyoxal, may be introduced following caustic treatment of the reaction mixture of polyaminoboronate to form the polyboronic compound.
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