Flame retardant epoxy resin modified with phosphorus and silicon
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United States of America Patent
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Mar 18, 2003
Grant Date -
N/A
app pub date -
Dec 31, 2001
filing date -
Oct 29, 2001
priority date (Note) -
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Abstract
Disclosed is an epoxy resin modified with phosphorus and silicon having an synergistically improved flame retardant property, prepared by reacting an epoxy resin with phosphorus and silicon. The contents of phosphorus and silicon in the epoxy resin are 2.0 wt % to 3.2 wt % and 0.5 wt % to 2.2 wt %, respectively. The epoxy resin according to the present invention will be applicable to the preparation of electrical circuit boards.
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