Epoxy resin, epoxy resin composition thereof and cured product thereof
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United States of America Patent
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Feb 19, 2008
Grant Date -
Sep 9, 2004
app pub date -
Jan 13, 2004
filing date -
Jun 27, 2001
priority date (Note) -
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Abstract
An epoxy resin represented by general formula (2), ##STR00001## wherein R.sub.1-R.sub.4 indicate a hydrocarbon group of carbon number 1-6, n is 0 or integer of 1 or more and X is a bond or the following general formula ##STR00002## wherein R.sub.5-R.sub.6 indicate a hydrogen atom or hydrocarbon group of carbon number 1-6, obtained by reacting an aromatic compound represented by general formula (1) and epihalohydrine, ##STR00003## wherein R.sub.1-R.sub.4 and X are as identified herein, having molecular weight distribution comprising, content of n=0 component in the epoxy resin represented by general formula (2) is 60% or less and epoxy equivalent is 250 g/eq or over.
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