POLYCARBONATE RESIN AND PREPARATION THEREOF

POLYCARBONATE RESIN AND PREPARATION THEREOF

PROBLEM TO BE SOLVED: To provide a polycarbonate resin which has a good hue, allows little generation of corrosive gas and is suitable for a wide range of usage such as food usage, optical usage, silicon wafers, electrical/electronic equipment containers, etc., and a preparation process thereof. SOL...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MANABE AKIYOSHI, HORIE TATSUMI, NAKANO SHIGEKAZU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a polycarbonate resin which has a good hue, allows little generation of corrosive gas and is suitable for a wide range of usage such as food usage, optical usage, silicon wafers, electrical/electronic equipment containers, etc., and a preparation process thereof. SOLUTION: In a preparation process of a polycarbonate resin using phosgene as a starting material, phosgene having a carbon tetrachloride content of 100 ppm or smaller and a chlorine molecule content of 1,000 ppb or smaller, is used. Further, a polycarbonate resin prepared using phosgene as a starting material contains 10 ppm or less carbon tetrachloride and 100 ppb or less volatile chlorine.