Processes for producing hydrocarbon/phenol resin and producing epoxy resin
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United States of America Patent
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Jun 13, 2006
Grant Date -
N/A
app pub date -
Apr 28, 2000
filing date -
Apr 30, 1999
priority date (Note) -
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Abstract
A process for efficiently producing hydrocarbon/phenol resin having a satisfactory hue through reaction of phenol with an unsaturated cyclic hydrocarbon having two or more carbon--carbon double bonds in the presence of an acid catalyst, which comprises (1) a step in which the molar fraction of ether type reaction products to all the reaction products is regulated to at least 0.1 and (2) a step in which the ether type reaction products yielded by the progress of the reaction is substantially eliminated. The hydrocarbon/phenol resin thus obtained is reacted with an epihalohydrin in the presence of a base catalyst to obtain an epoxy resin having an excellent hue.
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