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Title:
光ディスク基板用芳香族ポリカーボネート樹脂組成物の製造方法
Document Type and Number:
Japanese Patent JP3992508
Kind Code:
B2
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-C30 fatty acid monoglyceride to 100 parts by mass of an aromatic polycarbonate resin, adding water having an electric conductivity, as measured at 25 DEG C, of 1 mu S/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.

Inventors:
長佐 宗廣
Application Number:
JP2002039757A
Publication Date:
October 17, 2007
Filing Date:
February 18, 2002
Export Citation:
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Assignee:
出光興産株式会社
International Classes:
C08J3/12; C08G64/14; C08K5/103; C08L69/00; G11B7/253; G11B11/105
Domestic Patent References:
JP2000268404A
JP2001279082A
JP11342510A
JP10298301A
JP10292050A
Attorney, Agent or Firm:
大谷 保