Powder coating with non-crystalline and crystalline epoxy resins and curing agent
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United States of America Patent
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Sep 9, 2003
Grant Date -
Feb 14, 2002
app pub date -
Aug 13, 2001
filing date -
May 7, 1999
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Expired
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Abstract
Provided are low temperature curing thermosetting epoxy powder coating compositions comprising at least one non-crystalline epoxy resin, at least one crystalline epoxy resin, a curing agent, and a cure catalyst. Coatings made from such powder compositions exhibit a substantial reduction in bubble entrapment, enough to prevent a visible haze from forming in the coating, when cured at low temperatures demanded by brass substrates.
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