Abstract:
The invention relates to novel polythiophene-polyanion complexes which are soluble or dispersible in nonpolar organic solvents, and to the use thereof.
Abstract:
The invention relates to novel polythiophene-polyanion complexes which are soluble or dispersible in nonpolar organic solvents, and to the use thereof.
Abstract:
Process for preparing specific oxidants which in mixtures with precursors for preparing conductive polymers display a long processing time during the polymerization; oxidants obtainable by this process; mixtures comprising such specific (retarding) oxidants and the use of said oxidants for preparing solid electrolyte capacitors and conductive layers.
Abstract:
The present invention provides a new process for separating zirconium and hafnium compounds, in particular to remove traces of zirconium compounds from hafnium compounds, using fractional crystallisation, as well as hafnium compounds obtainable in accordance with this process.
Abstract:
The invention relates to a novel process for the production of linear organic thiophene-phenylene oligomers represented by the following general formula (I), The process involves reacting (e.g., by means of a Suzuki coupling reaction) a compound represented by the following general formula (II), with a formula represented by the following general formula (III), The reaction may be conducted optionally in the presence of catalysts, optionally in a solution and/or optionally at elevated temperature. The linear organic thiophene-phenylene oligomers of the present invention may be used to form semi-conductive coatings.
Abstract:
A process for the preparation of dispersions or solutions comprising polythiophene+An− ion complexes in anhydrous or low-water-content organic solvents, characterized in that at least one water-miscible organic solvent or a water-miscible solvent mixture is added to an aqueous dispersion or solution comprising optionally substituted polythiophenes, all or some of the water is removed, and the resultant dispersion or solution is, if desired, diluted with organic solvents.
Abstract:
The invention relates to asymmetrical linear organic oligomers represented by the following formula (I), X—R1—[—Ar—]n—R2 (I) in which n is from 4 to 10, Ar is for example an optionally substituted 2,5-thienylene group, R1 is for example a C10-C20 alkylene group, R2 is for example a C1-C12 alkyl group, and X is for example a vinyl group or an alkoxysilyl group. Also described is a process for the production of such organic oligomers, and semiconductors in electronic modules that include such organic oligomers.
Abstract:
A thermoplastic polyurethane urea prepared by reacting a reaction mixture of a) one or more polyisocyanates, with b) one or more compounds having on average at least 1.8 Zerewitinoff-active hydrogen atoms and a molecular weight of between 400 and 10,000, and c) water, wherein the water is introduced into the reaction mixture with the aid of an effective quantity of one or more emulsifiers. The reaction mixture may additionally contain d) further conventional auxiliary substances and additives.
Abstract:
An aqueous dispersion used for producing a conductive film is provided. The dispersion contains a complex of poly(3,4-dialkoxythiophene) and a polyanion, and is produced by polymerizing 3,4-dialkoxythiophene in an aqueous solvent in the presence of the polyanion by using peroxodisulfuric acid as an oxidizing agent or by using an oxidizing agent and an acid that is employed so as to lower pH of the reaction mixture.
Abstract:
The present invention provides a method for the production of an aqueous dispersion containing an electroconductive polymer component which enables electroconductive thin films which are outstanding in their transparency and electroconductivity to be formed, together with the aqueous dispersion obtained by said method. This method includes a stage in which a 3,4-dialkoxythiophene is polymerized in an aqueous solvent using an oxidizing agent in the presence of a polyanion and, in this stage, said oxidizing agent is added by the dropwise addition of a solution or dispersion containing said oxidizing agent to the reaction solution or, alternatively, in the polymerization stage, the alkali metal ion concentration in the reaction liquid is maintained at no more than 400 ppm.