Abstract: An optical observation instrument according to the invention, in particular a surgical microscope or exoscope, comprises an optics unit with an objective arrangement and at least one electronic image recorder, wherein the optics unit has a first stereo channel with a first beam path and a second stereo channel with a second beam path for recording a stereo image of an object field with the at least one electronic image recorder and wherein the first and the second beam path extend through the objective arrangement.

Abstract: The present invention relates to a multi-layer product, the first layer being a UV-cured protective layer which contains SiO2 nanoparticles, and the second layer containing a thermoplastic substrate. In addition, the invention relates to the composition of the UV-curable first layer, a process for the production of the multi-layer products and products, such as e.g. glazing products, which contain the named multi-layer products.

Abstract: The present invention relates to a multi-layer product, the first layer being a UV-cured protective layer which contains SiO2 nanoparticles, and the second layer containing a thermoplastic substrate. In addition, the invention relates to the composition of the UV-curable first layer, a process for the production of the multi-layer products and products, such as e.g. glazing products, which contain the named multi-layer products.

Abstract: The present invention provides an antistatic agent of the formula (I) R—SO3NR?R?R??R?? ??(I) wherein R represents a perfluorinated cyclic or linear, branched or unbranched carbon chain having 1 to 30 carbon atoms, R? represents a cyclic or linear, branched or unbranched carbon chain having 1 to 30 carbon atoms, which is unsubstituted or substituted with halogen, hydroxy, cycloalkyl or alkyl, and R?, R??, R?? independently represent a cyclic or linear, branched or unbranched carbon chain having 1 to 30 carbon atoms, which is unsubstituted or substituted with halogen, hydroxy, cycloalkyl or alkyl, with the proviso that at least one of the radicals R?, R?, R?? and R?? must not represent ethyl. The antistatic agent of the present invention may be incorporated in plastic molding materials to provide antistatic properties thereto.

Abstract: An agent suitable for imparting antistatic properties to plastics is disclosed. The incorporation of small amounts of perfluoroalkylsulfonic acid salt in plastic resins, notably thermoplastic resins was found to be effective for this purpose.

Abstract: A flame retardant thermoplastic molding composition is disclosed. The composition contains an amorphous thermoplastic polymer, at least one flame retardant in the form of a fully or partially halogenated sulfonic acid salt and at least on alkaline earth metal sulfate and/or one oxide having an average particle size of up to 400 nm.

Abstract: The use of zwitterionic compounds as mold release agents in thermoplastics is disclosed. Molding compositions having good release properties, preferably compositions containing polycarbonate resins are thus disclosed.

Abstract: A method of using oligocarbonates having terminal groups containing iodine to prepare molded articles (e.g., toys and medical equipment) having high X-ray contrast is described. The oligocarbonates contain more thaan one diol unit, and have a weight average molecular weight (Mw) of less than 3000.