Abstract: The invention relates to a process for connecting glass substrates which allows glass substrates to be aligned in a site-specific manner and to subsequently be connected to one another, and to the site-specifically aligned and interconnected glass substrates. Generally, the process relates to connecting glass substrates to one another, optionally also without site-specific alignment. The interconnected glass substrates obtainable by processes according to the invention are characterized by a firm bond with one another, which is preferably formed by solidified glass solder that is in form-fitting engagement with the glass substrates. Therein, recesses, which are preformed in the glass substrate, with glass solder are used for aligning and optionally for connecting the glass substrates.

Abstract: The invention provides a process for producing plastic parts, each of which has at least one glass insert which is connected to the plastic part along a connecting region, and the glass insert is free of plastic in the region encompassed by the connecting region and forms a glass window. The connecting region of the glass insert is preferably circumferentially closed. The glass window can have through-holes or preferably recesses extending only over a portion of the thickness of the glass window and having microstructures.

Abstract: Use of a laser-activatable component in a composition and/or use of a composition that includes the laser-activatable component, during laser transfer printing, characterized in that the laser-activatable component is activated by laser irradiation during use in such a way that the viscosity and/or the elasticity and/or the tack of the composition increase(s) due to an increase in temperature of the composition, wherein the laser-activatable component is a polymer made up of the groups comprising polyethylene glycol, polyvinylpyrrolidone, polyvinyl acetate, polyvinyl alcohol, polyacrylate, polyester, or copolymers of these polymers or blends.

Abstract: The invention relates to a method for producing reaction vessels from glass and to the glass reaction vessels obtainable by this method. The method comprises the following steps: 1. irradiating the surface of a first glass sheet by means of a laser beam of a wavelength for which the first glass sheet is permeable, 2. etching the first glass sheet to form recesses that extend over the complete thickness of the first glass sheet, and 3. connecting a second sheet with a surface of the first glass plate.

Abstract: A method of production of glass reaction vessels includes irradiating a laser beam of a wavelength for which a first glass plate is transparent onto the surface of the first glass plate. The first hiss plate is etched. Etching of the first glass plate is terminated when the recesses extend, over only a portion of the thickness of the first glass plate and therefore the recesses have a bottom formed in the first glass plate as a single piece.

Abstract: A process for the production of a glass-plastic connection which is form-fitting, and to a form-fitting composite between glass and plastic which is obtainable by the process. The process and the glass-plastic composite are characterized in that a glass, which in particular is planar, neither during the process nor in the glass-plastic composite is subjected to a mechanical load which could lead to cracks, e.g. microcracks. Accordingly, in the composite, the glass is connected to a plastic in a stress-free manner The composite of glass with plastic is especially gas-proof and/or liquid-proof.

Abstract: The invention relates to a process for connecting glass substrates which allows glass substrates to be aligned in a site-specific manner and to subsequently be connected to one another, and to the site-specifically aligned and interconnected glass substrates. Generally, the process relates to connecting glass substrates to one another, optionally also without site-specific alignment. The interconnected glass substrates obtainable by processes according to the invention are characterized by a firm bond with one another, which is preferably formed by solidified glass solder that is in form-fitting engagement with the glass substrates. Therein, recesses, which are preformed in the glass substrate, with glass solder are used for aligning and optionally for connecting the glass substrates.

Abstract: An optical component, in particular a passive component, for optical waveguiding, includes: optical waveguides formed in a carrier substrate as a waveguide pattern. The optical waveguides are formed in the carrier substrate by recesses by cutting out the optical waveguide. In an embodiment, the optical waveguide is connected to the carrier substrate by web-shaped supporting structures.

Abstract: Use of a laser-activatable component in a composition and/or use of a composition that includes the laser-activatable component, during laser transfer printing, characterized in that the laser-activatable component is activated by laser irradiation during use in such a way that the viscosity and/or the elasticity and/or the tack of the composition increase(s) due to an increase in temperature of the composition, wherein the laser-activatable component is a polymer made up of the groups comprising polyethylene glycol, polyvinylpyrrolidone, polyvinyl acetate, polyvinyl alcohol, polyacrylate, polyester, or copolymers of these polymers or blends.

Abstract: An optical component, in particular a passive component, for optical waveguiding, includes: optical waveguides formed in a carrier substrate as a waveguide pattern. The optical waveguides are formed in the carrier substrate by recesses by cutting out the optical waveguide. In an embodiment, the optical waveguide is connected to the carrier substrate by web-shaped supporting structures.

Abstract: A method and device for laser machining a substrate, involves deflecting the laser radiation using a galvanometer scanner and an electro-optical deflector. The laser radiation thus deflected multiple times is then directed at a machining position on the substrate. By superposing an additional beam deflection by the electro-optical deflector onto the advance movement in the machining direction, which deflector is operated with steady oscillation excitation for this purpose, the resultant beam deflection follows a circular revolving path. In the process, the series of pulses of a pulsed radiation source is restricted to individual or a plurality of machining positions on the substrate, and forms for example a cutting front so as to thus quickly and reliably produce a kerf having the desired width.

Abstract: A method and device for reading out X-ray image information stored in a storage phosphor layer with a stimulating light beam includes deflecting the stimulating light beam to alternately move it in a first direction and in a second direction, opposite to the first direction, across the storage phosphor layer. During the movements of the stimulating light beam in the first direction and the second direction, detection emission light emitted by the storage phosphor layer and converting them into corresponding first and second detector signals, respectively. The first and second detector signals are compared with each other. The first and/or second detector signals, which were obtained during the movements of the stimulating light beam across the storage phosphor layer in the first direction and second direction, respectively, are corrected dependent on the results of the comparison.

Abstract: A method and device for reading out X-ray image information stored in a storage phosphor layer with a stimulating light beam includes deflecting the stimulating light beam to alternately move it in a first direction and in a second direction, opposite to the first direction, across the storage phosphor layer. During movements of the stimulating light beam in the first and second directions emission light emitted by the storage phosphor layer is detected and converted into corresponding first and second detector signals, respectively. The first and/or second detector signals are corrected with regard to influences from the stimulating light beam being alternately moved in the first direction and in the second direction across the storage phosphor layer.

Abstract: The invention relates to a process for the epoxidation of an olefin comprising (a) reacting the olefin with hydrogen peroxide in the presence of methanol as solvent in at least two reaction stages to obtain a mixture (M-a) comprising olefin oxide, unreacted olefin, methanol and water, wherein between at least two reaction stages, olefin oxide is separated by distillation; (b) separating unreacted olefin from the mixture (M-a) by distillation to obtain a mixture (M-bi) comprising at least 80 wt.-% of olefin and a mixture (M-bii) comprising methanol, water and at least 7 wt.-% of olefin oxide; (c) separating olefin oxide from the mixture (M-bii) in at least one distillation stage to obtain a mixture (M-ci) comprising at least 99 wt.-% of olefin oxide and a mixture (M-cii) comprising water and at least 55 wt.-% of methanol; (d) separating methanol from the mixture (M-cii) in at least one distillation stage to obtain a mixture (M-di) comprising at least 85 wt.-% of methanol and up to 10 wt.

Abstract: The present invention relates to a continuous process for the preparation of an olefin oxide wherein an olefin is reacted with a hydroperoxidein the presence of a catalyst, and wherein the reaction which is carried out in at least three reactors operated in parallel is controlled by specifically adjusting the catalyst loads in the reactors.

Abstract: The present invention relates to a continuous process for the preparation of an olefin oxide wherein an olefin is reacted with a hydroperoxidein the presence of a catalyst, and wherein the reaction which is carried out in at least three reactors operated in parallel is controlled by specifically adjusting the catalyst loads in the reactors.

Abstract: The present invention provides a process for the epoxidation of propene which comprises reacting propene with hydrogen peroxide in the presence of methanol as solvent and a titanium zeolite catalyst, the process further comprising separating propylene oxide from the reaction mixture to obtain a mixture comprising methanol, water, at least one carboxylic acid and at least one carbonyl compound, wherein the at least one carboxylic acid is at least partially neutralized, said process optionally comprising a hydrogenation stage.

Abstract: A method of separating propylene oxide from a mixture (M) comprising propylene oxide and methanol, said method comprising: (i) introducing said mixture (M) into an extractive distillation column; (ii) additionally introducing an extracting solvent into said extractive distillation column; (iii) distilling propylene oxide overhead from said extractive distillation column as top stream; (iv) withdrawing a bottoms stream from said extractive distillation column; (v) compressing the top stream obtained overhead in (iii) by means of at least one compressor to give a compressed vapor.

Abstract: The invention relates to a process for the epoxidation of an olefin comprising (a) reacting the olefin with hydrogen peroxide in the presence of methanol as solvent in at least two reaction stages to obtain a mixture (M-a) comprising olefin oxide, unreacted olefin, methanol and water, wherein between at least two reaction stages, olefin oxide is separated by distillation; (b) separating unreacted olefin from the mixture (M-a) by distillation to obtain a mixture (M-bi) comprising at least 80 wt.-% of olefin and a mixture (M-bii) comprising methanol, water and at least 7 wt.-% of olefin oxide; (c) separating olefin oxide from the mixture (M-bii) in at least one distillation stage to obtain a mixture (M-ci) comprising at least 99 wt.-% of olefin oxide and a mixture (M-cii) comprising water and at least 55 wt.-% of methanol; (d) separating methanol from the mixture (M-cii) in at least one distillation stage to obtain a mixture (M-di) comprising at least 85 wt.-% of methanol and up to 10 wt.

Abstract: The present invention provides a process for the epoxidation of propene which comprises reacting propene with hydrogen peroxide in the presence of methanol as solvent and a titanium zeolite catalyst, the process further comprising separating propylene oxide from the reaction mixture to obtain a mixture comprising methanol, water, at least one carboxylic acid and at least one carbonyl compound, wherein the at least one carboxylic acid is at least partially neutralized, said process optionally comprising a hydrogenation stage.