Ciba-geigy Corporation

Bayer Aktiengesellschaft

Basf Aktiengesellschaft

Other

Man Roland Druckmaschinen Ag

Dainippon Ink and Chemicals, Incorporated

Man Technologie Gmbh

Titmus Eurocon

Gerhard Kossmehl

Horst Schafer

Detlef Kabbeck-Kupijai

Jurgen Hocker

Alexander Wissemeier

Klaus Erhardt

Klaus Horchler Von Locquenghien

Wolfgang Weigelt

J&uuml;rgen Dressel

Jurgen Volkheimer

Walter Neumann

Norbert Klaus

Madjid Rezaii-Djafari

Frank Boerner

Matthias Niemitz

Friedrich Jonas

Hartmut Fuhrmann

Wolfgang Scheer

Bettina Lundt

Dietrich Quast

Georg Chatzitheodorou

Diureides and their use

The description relates to novel liquid-crystalline polyesters containing the following repeating units: A having the formula: ##STR1## and B having the formula ##STR2## The novel polyesters are of use e.g. as starting materials for production of fibres with improved mechanical properties. They can either be converted as such into fibres or can be added to conventional fibre-forming matrix polymers.

Stiff-chain polyesters and a method of preparing them

The invention relates to a hydrogel which is a copolymer of a polymerizable monomer mixture which contains

Hydrogels based on fluorine-containing and saccharide monomers

An offset litho or other surface printing press has a printing image carrier with image areas defined by water repelling and water-wettable properties. In order to make possible a reconfiguration of the image directly in the press the printing image carrier is in the form of an electrically conducting substrate, as for example nickel, M which is coated with a polymer to define such areas. The deposition of the polymer is controlled electrochemically with the plate cylinder acting as one electrode and the opposite electrode being in the form of a roller able to rotate in an electrolyte container. One of the two electrodes is in the form of matrix and is activated in a manner in conformity with a pattern of halftone dots corresponding to the desired image. Dependent on whether the polymer is hydrophobic or hydrophilic, the ink accepting areas or either the coated or non-coated parts of the substrate.

Method of producing a printing image carrier

Hydrophilic silicone rubber article, the surface of which is hydrophilized partly or completely by reaction (equilibration reaction) with organosiloxanes, the organosiloxanes being synthesized by the reaction of SiH-group-containing siloxanes with allyl compounds which contain protected OH groups. These articles are particularly useful as contact lenses and intraocular lenses.

Hydrophilic silicone rubber article and process for its preparation

The invention relates to a surface printing press with a printed image carrier having an image thereon corresponding to the matter to be printed on paper or the like. The image on the printed image carrier is in the form of hydrophilic and hydrophobic areas. In order to be able to modify the extents and positions of these areas on the press directly and thus reduce press idle times the printed image carrier is made of a material such as polymer whose said areas may be changed over dotwise between the said hydrophilic and hydrophobic conditions by electrical effects taking place in an electrochemical process with one electrode being formed by the plate cylinder and the counter-electrode being formed by a roller bearinged for rotation in an electrolyte container. One of the two electrodes is in the form of matrix and is operated so as to produce a pattern of dots.

Printing press

A modified silicone rubber with dimethylsiloxane and urethane units in the main chains, which are cross linked through methyl groups. This material is hydrophilic and suitable as a contact lens material.

Modified silicone rubber and its use as a material for optical lenses

The invention relates to fusible, electrically conductive N-arylpyridinium-TCNQ complexes of the formula ##STR1## in which m is zero or an integer from 0 to 2 and

Fusible, electrically conductive TCNQ complexes, methods for their

The invention relates to a process for the production of doped heterocyclic polymers, wherein sulphur-free heteroaromatic compounds are reacted with arsenic pentafluoride, optionally in the gas phase or in an inert organic solvent, at temperatures of from -20.degree. C. to +80.degree. C. (or the boiling point of the solvent), and to the doped heterocyclic polymers obtained according to this process, as well as to doped products of polymers according to the following formula ##STR1## wherein X=O or S, and

Oxidizing polymerization with AsF.sub.5

Process for the production of doped polymers containing heteroaromatic 5-membered rings in which polymers of aromatic 5-ring membered heterocyclic compounds or low molecular weight compounds containing heterocyclic 5-membered rings are reacted with nitronium or nitrosonium salts, optionally in inert organic solvents, at temperatures of from -20.degree. C. to +80.degree. C. or up to the boiling point of the solvents, and the doped polymers containing heteroaromatic 5-membered rings obtained by this process.

Oxidizing polymerization with NO.sup..sym. and NO.sub.2.sup..crclbar.

Reaction products of poly-(2,5-thiophendiyl) and arsenic pentafluoride. The black complexes are insoluble solids. Due to their high electric conductivity they can be used as conductors of electric currents. Suitable applications are, e.g., sheet-form conductors for heating systems or electrodes for electrical batteries.

Poly-(2,5-thiophendiyl)arsenic pentafluoride complexes

Process for rendering silicone rubber contact lenses hydrophilic by first reacting the silicone rubber with an oligomeric siloxane containing SiH groups in the presence of a catalyst and then subjecting the resulting equilibrated silicone rubber to a reaction with an aqueous base; or a silane addition reaction with a reactant containing C.dbd.C double bonds.

Growing community of inventors

Berlin, Germany

Gerhard Kossmehl