Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-09-11
2007-09-11
Sellers, Robert (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C257S793000, C523S466000, C525S481000
Reexamination Certificate
active
11000905
ABSTRACT:
A method for producing an epoxy resin composition for semiconductor encapsulation, which does not cause void generation and the like and is excellent in reliability. A method for producing an epoxy resin composition for semiconductor encapsulation, which contains the following components (A) to (C): (A) an epoxy resin, (B) a phenol resin, and (C) a hardening accelerator, which comprises mixing the whole or a part of the components excluding the component (A) among the components containing the components (A) to (C) in advance under a reduced pressure of from 1.333 to 66.65 kPa and under a heating condition of from 100 to 230° C., and then mixing the component (A) and remaining components with the resulting mixture.
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Akizuki Shinya
Eto Takuya
Ikemura Kazuhiro
Ishizaka Tsuyoshi
Okada Takeshi
Nitto Denko Corporation
Sellers Robert
Sughrue Mion Pllc.
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