Poly (phenylene ethers) and their preparation

US4743661A · kind A · utility

Assignee

• BASF SE

Inventors

• Konrad Mitulla · Ludwigshafen, DE
• Juergen Hambrecht · Heidelberg, DE
• Helmut Tesch · Bad Dürkheim, DE
• Burghard Schmitt · Worms, DE
• Hansjoachim Maeder · Battenberg, DE

Key dates

• Filing date: Aug 5, 1986
• Grant date: May 10, 1988
• Expiry date: Aug 5, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/485
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

High molecular weight polyphenylene ethers are prepared from monohydric phenols by a conventional polycondensation, by a method in which the resulting polymers are reacted with an epoxide of the general formula (I) ##STR1## where R.sup.1 and R.sup.2 can be identical or different and are each alkyl, cycloalkyl, aryl, aryloxy, alkoxy or carboxyalkyl, each of which may contain a further epoxide group, or C.sub.3 -C.sub.20 -alkyl-substituted amino, or R.sup.1 is hydrogen and R.sup.2 is one of the above groups, or R.sup.1 and R.sup.2 form part of a cycloalkyl ring.