Reacting epoxy resin with p-containing dihydric phenol or naphthol
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United States of America Patent
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Nov 11, 2003
Grant Date -
Mar 21, 2002
app pub date -
Sep 10, 2001
filing date -
Jun 19, 1998
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Abstract
A method for imparting flame retardance to an epoxy resin comprises reacting an epoxy resin with a phosphorus-containing dihydric phenol or naphthol derived from the reaction of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (i.e., DOPO) with a benzoquinone or naphthoquinone.
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