Processes of synthesizing multi-functional phosphorus-containing epoxy curing agent
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United States of America Patent
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Sep 2, 2014
Grant Date -
May 24, 2012
app pub date -
May 7, 2011
filing date -
Nov 19, 2010
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Abstract
A series of curing agents are provided. The curing agents are multi-functional and phosphorus-containing. The curing agents have excellent processability to be used as an epoxy resin curing agent. The curing agents can be cured to obtain a phosphorus-containing epoxy thermoset with flame retardancy characteristic. The epoxy thermosets are very fit for circuit board substrate having high glass transition temperature; semiconductor packaging material; and related materials.
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