Honeywell International Inc.

Riedel-de Haen Aktiengesellschaft

Bernd Kellermeier

Andreas Kanschik-Conradsen

Christian N Werner

Horst Schmand

Gunter Bartels

Susanne Hoyer

Hans-Jurgen Schmidt

Hans-Jürgen Schmidt

Wolfgang Gennburg

Conductive polymers and a method of forming conductive polymers. More particularly, a method of forming head-to-tail coupled regioregular poly-(3-substituted) thiophenes having improved charge carrier mobility and current modulation. Also, monomers having two different halogen leaving groups and which form regioregular poly-(3-substituted) thiophenes more efficiently and economically than other processes. Polythiophene polymers, films and articles are also provided.

Halogenated thiophene monomer for the preparation of regioregular polythiophenes

An improved process and catalyst system for the isomerization of halothiophenes. More particularly, an improved process for the isomerization of 2-halothiopehenes to 3-halothiophenes by reacting a 2-halothiophene with a catalyst and in the presence of a base. The addition of a base additive to the acidic zeolite catalyst allows the desired isomerization reaction to take place while suppressing side-reactions that result in the decomposition of thiophene rings. The catalyst lifetime is thus increased and the amount of catalyst needed for the reaction is reduced, lowering cost.

Process for isomerization of 2-halothiophene to 3-halothiophene

The present invention relates to a process for the preparation of compounds of the general formula I ##STR1## in which X and Y, independently of each other, represent hydrogen, fluorine, chlorine or bromine, but cannot simultaneously represent hydrogen, characterised in that compounds of the general formula II ##STR2## in which X and Y are defined as above, are reacted with aqueous ammonia under copper catalysis, and to intermediates for the preparation of compounds of the general formula I.

Process for the preparation of haloanthranilic acids

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Lindhorst, Germany

Bernd Kellermeier