Epoxy Resin, Method For Producing Same And Epoxy Resin Composition Thereof
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United States of America Patent
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Issued Date -
Jan 10, 2008
app pub date -
Jun 16, 2005
filing date -
Jun 17, 2004
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Abandoned
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Abstract
Epoxy resin represented by general formula (I), wherein n is an integer of 0 or more, A.sub.1 and A.sub.2 are residue of divalent phenol, and A.sub.1 and A.sub.2 can be same or can be different and both R.sub.1 and R.sub.2 are H or which is synthesized from divalent phenol and epihalohydrine, and satisfies numerical formula (1), 0.3.ltoreq.X/Y.ltoreq.2.0 formula (1) wherein, X; epoxy equivalent (g/eq) Y; phenolic hydroxyl group equivalent (g/eq) further, amount of hydrolytic halogen is 0.05 wt. % or less.
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