Bayer Aktiengesellschaft

Bayer Antwerpen N.v.

Bayer Materialscience Ag

Michael Bödiger

Rainer Neumann

Michael Prein

Frieder Heydenreich

Rolf Lanze

Dirk Van Meirvenne

Franky Bruynseels

Steffen Kühling

René De Cleyn

The present application relates to a process for producing high-purity bis(4-hydroxyaryl)alkanes from adducts of bis(4-hydroxyaryl)alkanes and aromatic hydroxy compounds, which are obtained by acid-catalysed reaction of the aromatic hydroxy compounds with ketones.

Bis(4-hydroxyaryl)alkanes

The application relates to a process for producing high-purity bis(4-hydroxyaryl)alkanes from adducts of bis(4-hydroxyaryl)alkanes and aromatic hydroxy compounds, which are obtained by acid-catalysed reaction of the aromatic hydroxy compounds with ketones.

Bisphenol phenol adducts

Polycarbonate substrates, the preparation of which is based on 1,1-bis-(4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, and their use for producing shaped articles with particularly high purity and extremely high surface brilliance and also the shaped articles which can be produced from the polycarbonate substrate are described.

Polycarbonate substrates

Growing community of inventors

League City, TX, United States of America

Michael Bödiger