Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1995-11-28
1998-04-14
Gulakowski, Randy
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
525117, 525524, 528 97, 528 98, 528103, C08L 6300, C08G 5900
Patent
active
057391866
ABSTRACT:
The invention relates to an epoxy resin composition for semiconductor encapsulation comprising at least an epoxy resin, hardener, inorganic filler, and accelerator, wherein said epoxy resin is one which is composed of about 20 to about 90 parts by weight of 4,4'-bisphenol F type epoxy resin and about 10 to about 80 parts by weight of either a polyhydric phenolic type epoxy resin which has slightly polar hydrocarbon groups (Z) lying between the phenyl nuclei, or a biphenol type epoxy resin.
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Hayakawa Atsuhito
Murata Yasuyuki
Nakanishi Yoshinori
Tohriiwa Norio
Carmen Dennis V.
Gulakowski Randy
Shell Oil Company
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