Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1997-02-04
1999-01-26
Sellers, Robert E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523427, 525481, 525484, 525488, 525525, C08K 0308, C08L 6300
Patent
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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Ghoshal Ramkrishna
Mukerji Prosanto
Motorola Inc.
Polyset Company, Inc.
Sellers Robert E.
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