Abstract: A method and device for producing a tear line on a planar workpiece by material removal by means of a pulsed laser, wherein machining cycles are preceded by a method step for generating and storing a reference signal curve which is formed by reference signals, causing the pulse amplitude of the laser pulses, via removal locations along the contour of the tear line. The achievement of a respective predetermined percentage of the reference signal or of an absolute distance from the reference signal by a measurement signal is used as the space-resolved deactivation criterion for each removal location, which measurement signal is obtained from a transmitted part of the pulse amplitude at the respective removal location.

Abstract: A method and device for producing a tear line on a planar workpiece by material removal by means of a pulsed laser, wherein machining cycles are preceded by a method step for generating and storing a reference signal curve which is formed by reference signals, causing the pulse amplitude of the laser pulses, via removal locations along the contour of the tear line. The achievement of a respective predetermined percentage of the reference signal or of an absolute distance from the reference signal by a measurement signal is used as the space-resolved deactivation criterion for each removal location, which measurement signal is obtained from a transmitted part of the pulse amplitude at the respective removal location.

Abstract: This invention relates to a leather that contains scent-containing microcapsules in its cross section, wherein the walls of the microcapsules comprise reaction products of guanidine compounds and polyisocyanates.

Abstract: The invention relates to a novel method for producing a metal/ceramic substrate, which is characterized by applying at least one metal area to at least one top surface of a ceramic layer. At least one metal area is applied to at least one surface side of a ceramic layer, wherein the ceramic layer is heated in a thermal process step in an area not covered by the metal area along a separating or break-off line.

Abstract: Disclosed is a method for separating optical fibers by means of CO2 laser radiation, appllicable with various types and sizes of fibers with or without cladding as well as with fiber bunches and fiber components. According to the inventive method, separation is performed by means of a special impulse regime adapted to each material, whereby minuscule volumes of material are removed along a line in a sawing-like process until complete separation has been achieved.

Abstract: This invention relates to a leather that contains scent-containing microcapsules in its cross section, wherein the walls of the microcapsules comprise reaction products of guanidine compounds and polyisocyanates.

Abstract: The invention relates to microcapsules for which the walls comprise reaction products of polyisocyanates, guanidine compounds, and optionally amines, wherein the polyisocyanates have an isocyanurate content of at least 30% by weight, based on polyisocyanate, and the walls comprise on average less than 9% by weight, based on the total weight of the microcapsule.

Abstract: The invention relates to microcapsules for which the walls comprise reaction products of polyisocyanates with guanidine compounds and amines.

Abstract: This invention relates to a leather that contains scent-containing microcapsules in its cross section, wherein the walls of the microcapsules comprise reaction products of guanidine compounds and polyisocyanates.

Abstract: The invention relates to microcapsules for which the walls comprise reaction products of polyisocyanates, guanidine compounds, and optionally amines, wherein the polyisocyanates have an isocyanurate content of at least 30% by weight, based on polyisocyanate, and the walls comprise on average less than 9% by weight, based on the total weight of the microcapsule.

Abstract: The invention relates to microcapsules for which the walls comprise reaction products of polyisocyanates with guanidine compounds and amines.

Abstract: The invention relates to microcapsules having walls obtained by polyaddition of polyisocyanates and polyamines in an aqueous emulsion comprising protein hydrolysate emulsifier.

Abstract: Novel microcapsules are characterized in that the walls thereof consist of reaction products of crosslinking agents with iminooxadiazinedione isocyanates or the walls thereof contain such reaction products. A process for the production of such microcapsules has also been found, as have carbonless copying papers containing such microcapsules.

Abstract: In the process for the preparation of microcapsule dispersions by an interface polyaddition process in which an oil-in-water emulsion is prepared from an oily phase, which comprises the substance to be encapsulated and a lipophilic substance capable of polyaddition, and on aqueous phase, and the reaction partner required for the polyaddition is then added to the aqueous phase, capsules with smaller particle sizes are obtained, with a saving in emulsifying energy, if an oil-soluble emulsifier is added to the oily phase before the emulsification.

Abstract: Novel microcapsules are characterized in that their walls are made of reaction products of guanidine compounds and polyisocyanates or contain such reaction products. Dispersions containing such microcapsules can be prepared by replacing the amines, amino alcohols or hydrazine compounds in processes known per se for preparing microcapsule dispersions from polyisocyanates and amines, amino alcohols or hydrazine compounds by guanidine compounds. The present invention also relates to no-carbon copy papers containing dyestuff precursors in microcapsules whose walls are made of reaction products of guanidine compounds and polyisocyanates or contain such reaction products.

Abstract: Particularly advantageous and environmentally compatible recording material comprises, in microencapsulated form, at least one 3,1-benzoxazine color donor dissolved in a solvent, and is characterized in that the solvent consists of one or more natural oils and/or one or more esters of fatty acids on which natural oils are based, or comprises such oils and/or esters.

Abstract: Microcapsules can be prepared in an energy-saving manner by using a polyisocyanate which consists exclusively or partially of reaction products of isocyanates having a functionality of 2 or more with polyethylene oxide alcohols.

Abstract: The present invention relates to a new zeolite material having a composition (molar ratios of the oxides) corresponding to the formula:M.sub.2/n O.Al.sub.2 O.sub.3.(20-150) SiO.sub.2(M represents n-valent cation) to a process for the production thereof using hexamethylene imine and to the use of the zeolite material as a catalyst in the conversion of methanol and/or dimethyl ether to hydrocarbons.