Curable epoxy resin compositions with brominated triazine flame retardants
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United States of America Patent
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May 14, 2002
Grant Date -
N/A
app pub date -
Sep 10, 1999
filing date -
Sep 10, 1999
priority date (Note) -
Expired
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Abstract
A curable composition is formulated from an epoxy resin; a flame-retardant additive essentially free of phenolic groups and of epoxy groups; and a thermoplastic resin. The preferred epoxy resin is a mixture of an epoxy resin with less than 2 glycidyl ether groups per molecule and an epoxy resin that has greater than 2 glycidyl ether groups per molecule. The preferred flame-retardant additive is a brominated heterocyclic compound that preferable is triazine. The preferred thermoplastic resin is a poly(phenylene ether). The inventive curable compositions advantageously can be combined with reinforcement in the manufacture of circuit boards having excellent electrical properties, good solvent resistance, and good thermal expansion characteristics.
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