AMINIC HARDENERS WITH IMPROVED CHEMICAL RESISTANCE
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United States of America Patent
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Issued Date -
Jan 28, 2016
app pub date -
Mar 10, 2014
filing date -
May 16, 2013
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Abstract
A hardener composition comprising: a) an epoxy-amine adduct of i) a novolac epoxy resin; and ii) a first amine and b) a modifier wherein the hardener has a viscosity in the range of from 50 to 20,000 mPa·s and wherein a cured epoxy thermoset comprising the hardener exhibits no more than 1% weight loss or gain after immersion in concentrated mineral acid for 7 days at a temperature in the range of from 25° C. to 130° C., is disclosed. The hardener composition can be used with an epoxy resin to form a curable composition.
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