Phosphine oxide hydroxyaryl mixtures with novolac resins for co-curing epoxy resins
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United States of America Patent
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May 3, 2005
Grant Date -
Aug 7, 2003
app pub date -
Dec 12, 2002
filing date -
Feb 15, 2001
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Expired
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Abstract
A mixture of hydroxyarylphosphine oxides comprising (a) a mono(hydroxyaryl)phosphine oxide, (b) a bis(hydroxyaryl)phosphine oxide, (c) a tris((hydroxyaryl)phosphine oxide, and, optionally (d) a tri- aryl, alkyl, or aralkyl-substituted phosphine oxide combined with a phenolic co-crosslinking composition is useful as a polyhtdroxy mixture for co-crosslinking an epoxy resin which also imparts flame resistance.
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