Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2006-10-17
2006-10-17
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C264S176100, C264S219000, C359S107000, C359S642000, C528S198000, C528S199000
Reexamination Certificate
active
07122614
ABSTRACT:
The present invention provides an aromatic polycarbonate resin product for producing optical disc substrates of high reliability at high molding yield.The aromatic polycarbonate resin for optical disc substrates is produced by adding 0.015 to 0.05 parts by mass of a C14–C30fatty acid monoglyceride to 100 parts by mass of an aromatic polycarbonate resin, adding water having an electric conductivity, as measured at 25° C., of 1 μS/cm or less to the resin, the water content of the resin being controlled to 0.05 to 0.3 mass %, melt-extruding the water-added resin, cooling, and cutting to form pellets, the resin having a viscosity average molecular weight (Mv) of 10,000 to 20,000.
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Boykin Terressa
Idemitsu Kosan Co., ltd.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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