Basf Aktiengesellschaft

Petr Simak

Herbert Naarmann

Gernot Kohler

Klaus Penzien

Johannes Schlag

Karl Herrle

Franz Haaf

Guenter Hatzmann

Klaus Bronstert

Walter Heckmann

Volker Muench

Volker Ladenberger

Friedrich Hovemann

Highly electrically conductive copolymers of pyrroles and other heterocyclic compounds having a conjugated .pi.-electron system, which possess good mechanical properties coupled with a well-balanced spectrum of properties, are prepared by anodic polymerization of the pyrroles and other heterocyclic compounds and/or their dimers or oligomers in a polar solvent in the presence of a suitable conductive salt.

Electrically conductive pyrrole copolymers and their preparation

Finely divided electrically conductive pyrrole polymers are prepared by a process in which the pyrroles, in solution and in the presence of a conductive salt, are treated with an oxygen-containing oxidizing agent. The finely divided conductive pyrrole polymers can be used for the production of moldings.

Preparation of finely divided electrically conductive pyrrole polymers

Air-stable, electrically conductive systems having conductivities greater than 1.times.10.sup.-3 .OMEGA..sup.-1 cm.sup.-1 are prepared by reacting a metal cation of an element of sub-group VII, VIII or I of the periodic table with a 1,9-substituted phenalene of the general formula (I) ##STR1## where X is O, NH, S, Se or Te and Y is OH, NH.sub.2 or SH, to give a metal chelate, and oxidizing this metal chelate by means of an organic electron acceptor. The electrically conductive systems can be used in the electrical industry for the production of solar cells and for converting and fixing radiation, for producing electric and magnetic switches and electrochemical stores, and for the antistatic treatment of plastics.

Preparation of electrically conductive systems from substituted

Electrically conductive polymeric systems having electrical conductivities greater than 10.sup.-4 S/cm are prepared by a method wherein a polyarylene compound which contains one or more chain members of the formula ##STR1## where n is greater than 1, preferably from 5 to 50, R is a nitrile, acid amide, carboxyl or ester group, R.sup.1 and R.sup.2 are each hydrogen or a nitrile, acid amide, carboxyl or ester group, with the proviso that in each case one of the radicals R.sup.1 and R.sup.2 is hydrogen and the other is a nitrile, acid amide, carboxyl or ester group, and Y is an aromatic radical, preferably phenylene, is doped, in the absence of moisture and oxygen, with from 0.03 to 0.9 mole percent of an electron-attracting or electron-donating complexing agent. The resulting electrically conductive polymeric systems are useful in the electrical industry for the production of solar cells, for converting and fixing electromagnetic radiation and for the production of electrical and magnetic switches and electrical storage devices, and can be used for the antistatic treatment of plastics.

Preparation of electrically conductive polyarylene compounds having

A process for the preparation of stable electrically conductive polymers, having conductivities greater than 10.sup.-2 S/cm, wherein a polyacetylene is reacted with from 1 to 100, preferably from 10 to 33, % by weight of tosylmethyl isocyanide and from 0.1 to 70, preferably from 5 to 35, % by weight of an alkali metal or its amide, or of a Lewis acid. The polymers obtained can be used in electrical engineering for the production of solar cells, for the conversion and fixing of radiation and for the production of electrical and magnetic switches and electrical storage devices, and can also be used for the antistatic treatment of plastics.

Preparation of electrically conductive polymers

Stable electrically conductive polymers having conductivities greater than 10.sup.-2 S/cm are prepared by heating p-doped polyacetylenes, in the absence of oxygen and moisture, for from 0.1 to 3 hours, preferably from 0.5 to 1.0 hour, at from 500.degree. to 1,100.degree. C., preferably from 550.degree. to 850.degree. C. The electrically conductive polymers obtained can be used in the electrical industry for the production of solar cells, for the utilization and fixing of radiation, for the production of electrical and magnetic switches and stores, and for the antistatic treatment of plastics.

Preparation of stable electrically conductive polymers

Mineral lubricating oil compositions which contain a predominant proportion of a mineral lubricating oil together with a pour point depressant based on alkyl acrylate or alkyl methacrylate polymers and a viscosity index (VI) improver comprising a special selectively hydrogenated copolymer of styrene and a conjugated diene. The VI improver employed is a selectively hydrogenated, random butadiene-styrene copolymer containing from 35 to 45% by weight of styrene and possessing a particular structure and distribution of the monomers. The compositions exhibit high stability to shear and may therefore in particular be used for lubricating I.C. engines or gearboxes.

Lubricating oil compositions containing alkyl acrylate or methacrylate

Mixtures based on vinyl chloride polymers and small amounts of a copolymer of an ester of acrylic acid or methacrylic acid. The said copolymer contains acrylic acid ester or methacrylic acid ester units, units which contain a lactone ring structure, and, optionally, units of other copolymerizable monomers. The mixtures exhibit improved processability and may in particular be used for the manufacture of films, sheets and the like.

Thermoplastic vinyl chloride polymer compositions with improved

Mixtures based on vinyl chloride polymers and small amounts of copolymer of an ester of acrylic acid or methacrylic acid, which mixtures have been obtained by polymerization of vinyl chloride in the presence of the above copolymer. The said copolymer contains acrylic acid ester or methacrylic acid ester units, units which contain a lactone ring structure, and, optionally, units of other copolymerizable monomers. The mixtures exhibit improved processability and may in particular be used for the manufacture of films, sheets and the like.

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Ludwigshafen, Germany

Petr Simak