Patent ID: 6936683

Claim:
A process for the preparation of polymers of the formula (I) in which Ar is Ar 1 or Ar 2 and Ar 1 is an aromatic ring system having 4 to 20 carbon atoms, which is optionally monosubstituted or polysubstituted by C 1 -C 20 -alkyl, C 1 -C 20 -alkoxy, C 3 -C 20 -branched alkyl, phenyl or benzyl radicals and which further optionally contains up to 4 heteroatoms selected from the group consisting of oxygen, sulfur and nitrogen in the aromatic ring system, is a radical of the formula in which Y are identical or different and are CH or N; Aryl is an aryl group having 4 to 14 carbon atoms; R a and R b are identical or different and are a straight-chain or branched or cyclic alkyl or alkoxy group having 1 to 20 carbon atoms, in which one or more non-adjacent CH 2 groups is optionally replaced by —O—, —S—, —CO—, —COO—, —O—CO—, —NR 1 —, —(NR 2 R 3 ) + —A − or —CONR 4 — and in which one or more H atoms is optionally replaced by F, or are CN, F, Cl or an aryl group having 4 to 14 carbon atoms, which is optionally substituted by one or more non-aromatic radicals R a ; R 1 , R 2 , R 3 and R 4 are identical or different and are aliphatic or aromatic hydrocarbon radicals having 1 to 20 carbon atoms or are alternatively H; A − is a singly charged anion or an equivalent thereof; q is 0, 1 or 2; p is 1, 2, 3, 4 or 5; A 1 and A 2 are identical or different and are hydrogen or a C 1 - to C 20 -carbon-containing group; and n is from 5 to 50,000; which comprises the steps of a) reacting at least one monomer of the formula (II) in which X is a leaving group, and R 5 is unbranched alkyl having 1 to 20 carbon atoms, branched alkyl having 3 to 20 carbon atoms, cyclic alkyl or C 1 -C 4 -alkyl-substituted cyclic alkyl, which is optionally substituted or unsubstituted and/or contain heteroatoms, such as O, N and Si, P represents para in respect of the two methylene radicals —CH(A 1 )— and —CH(A 2 )— on both sides of the radical Ar, in which Ar, A 1 and A 2 are defined above, which is dissolved in an alcohol as a solvent, with a base, to give the compound of the formula (III) in which Ar, A 1 , A 2 , R 5 and n are as defined above, b) warming of the compound of the formula (III) with formation of a polymeric compound of the formula (I), which comprises employing a secondary or tertiary alcohol having at least 4 carbon atoms as the alcohol in step a).