Process for producing masked polyarylene ethers

US5998533A · kind A · utility

Assignee

• BASF SE

Inventors

• Martin Weber · Maikammer, DE
• Christian Fischer · Waldbronn, DE

Key dates

• Filing date: Dec 11, 1997
• Grant date: Dec 7, 1999
• Expiry date: Dec 11, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L81/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyarylene ethers having repeating units of the general formula I ##STR1## where t and q may each be an integer 0, 1, 2 or 3, PA1 T, Q and Z may each be a chemical bond or a group selected from --O--, --S--, --SO.sub.2 --, S.dbd.O, C.dbd.O, --N.dbd.N--, --R.sup.a C.dbd.CR.sup.b -- and --CR.sup.c R.sup.d --, with the proviso that at least one of the groups T, Q or Z is --SO.sub.2 -- or C--O and, if t and q are 0, Z is --SO.sub.2 -- or C.dbd.O, PA1 R.sup.a and R.sup.b are each hydrogen or C.sub.1 -C.sub.10 -alkyl, PA1 R.sup.c and R.sup.d are each hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkoxy or C.sub.6 -C.sub.18 -aryl, where the abovementioned groups may each be substituted by fluorine and/or chlorine, or, together with the carbon atom to which they are bonded, form a C.sub.4 -C.sub.7 -cycloalkyl group which may be substituted by one or more C.sub.1 -C.sub.6 -alkyl groups, and PA1 Ar and Ar.sup.1 are each C.sub.6 -C.sub.18 -aryl which may be unsubstituted or substituted by C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.18 -aryl, C.sub.1 -C.sub.10 -alkoxy or halogen, and terminal anhydride groups of the formula II ##STR2## (polyarylene ether A), are prepared by a process in…