Process for producing tricyanoethylated pentaerythritol
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United States of America Patent
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Feb 9, 1999
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N/A
app pub date -
Jul 10, 1997
filing date -
Apr 15, 1996
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Abstract
An imporved process for producing tricyanoethylated pentaerythritol by selectively cyanoethylating only three hydroxy groups of pentaerythritol in a high yield such as 90 to 95%, involves reacting one mole of pentaerythritol with three mole of acrylonitrile by Micheal Addition Reaction in an alkaline aqueous solution in coexistence with an extraction solvent. The tricyanoethylated pentaerythritol has a high purity and is useful for production of a high dielectric polymer.
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