Epoxy resin composition with cycloaliphatic epoxy-functional sil

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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523427, 525481, 525484, 525488, 525525, C08K 0308, C08L 6300

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active

058639705

ABSTRACT:
A composition useful as a die-attach adhesive, polymer bump or encapsulant comprises from about 5-100% by weight of a base resin and from zero to 95% by weight of a particulate filler such as silver, wherein the base resin contains (a) from 10-95 parts by weight of a cycloaliphatic epoxy-functional siloxane, (b) from about 5-90 parts by weight of a non-silicon-containing polyepoxy resin, .COPYRGT. from about 0.1-3 parts by weight of an iodonium salt, (d) from zero to about 3 parts by weight of a copper compound and, optionally, a silane adhesion promotor and/or an elastomeric toughener.

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