HIGH-QUALITY BISPHENOL A AND PROCESS FOR PRODUCING THE SAME

The present invention is a high-quality bisphenol A wherein the content of sodium is not more than 80 ppb and the content of each element of the group A consisting of iron, nickel, chromium, manganese, lead, and molybdenum is not more than 50 ppb, or a high-quality bisphenol A containing an organic...

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Bibliographic Details
Main Authors NAKAMURA, HIDEAKI, INOMATA, MASAMITSU, MIURA, TOSHIZUMI
Format Patent
LanguageEnglish
French
German
Published 07.04.2004
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The present invention is a high-quality bisphenol A wherein the content of sodium is not more than 80 ppb and the content of each element of the group A consisting of iron, nickel, chromium, manganese, lead, and molybdenum is not more than 50 ppb, or a high-quality bisphenol A containing an organic compound such as 9,9'-dimethylxanthene, 2-(4-hydroxyphenyl)-2,4,4-trimethylchroman, 2,2,4-trimethylchromene, etc., in an amount of lower than a specific amount, and a preparation process of these high-quality bisphenol A. When an aromatic polycarbonate is prepared using the high-quality bisphenol of the invention, an aromatic polycarbonate which is not colored at the preparation thereof and molding the polycarbonate.
Bibliography:Application Number: EP20000978064