Abstract: A glass-ceramic having at least two crystal phases, wherein at least one crystal phase has a positive temperature dependence of the resonance frequency ?f, at least one crystal phase has a negative temperature dependence of the resonance frequency ?f and the glass-ceramic has a resulting temperature dependence of the resonance frequency ?f of 0 ppm/K with a maximum deviation of +/?20 ppm/K, is described. Furthermore, a process for producing such a glass-ceramic and the use of the glass-ceramic are described.

Abstract: A glass-ceramic having at least two crystal phases, wherein at least one crystal phase has a positive temperature dependence of the resonance frequency ?f, at least one crystal phase has a negative temperature dependence of the resonance frequency ?f and the glass-ceramic has a resulting temperature dependence of the resonance frequency ?f of 0 ppm/K with a maximum deviation of +/?20 ppm/K, is described. Furthermore, a process for producing such a glass-ceramic and the use of the glass-ceramic are described.

Abstract: A glass-ceramic which is particularly suitable as dielectric for use in the high-frequency range, in particular as dielectric resonator, as electronic frequency filter element or as antenna element is disclosed. The glass-ceramic has at least the following constituents (in mol % on an oxide basis): 5-50% of SiO2, 0-20% of Al2O3, 0-25% of B2O3, 0-25% of BaO, 10-60% of TiO2, 5-35% of Re2O3, where Ba can be partly replaced by Sr, Ca, Mg, where Re is a lanthanide or yttrium and where Ti can be partly replaced by Zr, Hf, Y, Nb, V, Ta.

Abstract: In order to provide a decorative coating (9) which exhibits improved temperature resistance and strength on glass and glass-ceramic and which also has no strength-reducing effect on the substrate (3), or at least no longer has any substantially strength-reducing effect on the substrate, the invention envisions a process for producing glass or glass-ceramic articles having a decorative layer in which at least one decorative pigment (13) is mixed with a sol-gel binder (11), and the pigment mixed with the sol-gel binder is cured on the glass or glass-ceramic substrate of the article by annealing, to form a decorative layer having a porous ceramiclike structure.

Abstract: A process for the production of a glass-ceramic comprises the following steps: a) providing a mixture comprising at least SiO2, Al2O3, BaO and TiO2, b) melting the mixture in order to produce a glass phase, c) cooling the glass phase, and d) ceramicizing the glass phase. In the process, the glass phase is heated over the course of at most 5 minutes, preferably over the course of at most 3 minutes, to a temperature in the region of the crystallization temperature of Ba1-xZ1xTi1-yZ2yO3, whereby Z1 is an element selected from the group consisting of Sr, Ca, Ce, Pb, La and Sm, whereby Z2 is an element selected from the group consisting of Zr, Hf, Nb, V, Y, Sc and Ta, and whereby x and y are each independently of one another 0?x,y?0.5, preferably 0?x,y?0.1, but substantially below the crystallization temperature of Ba[Al2Si2O8].

Abstract: The present invention relates to UV-curable polyurethane dispersions, to a process for preparing them, and to their use.

Abstract: The present invention relates to a process for the preparation of phenolsulfonic acid-aldehyde condensates and the use thereof as drying agents, in particular in the spray drying of aqueous polymer dispersions.

Abstract: A process for the production of a glass-ceramic comprises the following steps: a) providing a mixture comprising at least SiO2, Al2O3, BaO and TiO2, b) melting the mixture in order to produce a glass phase, c) cooling the glass phase, and d) ceramicizing the glass phase. In the process, the glass phase is heated over the course of at most 5 minutes, preferably over the course of at most 3 minutes, to a temperature in the region of the crystallization temperature of Ba1-xZ1xTi1-yZ2yO3, whereby Z1 is an element selected from the group consisting of Sr, Ca, Ce, Pb, La and Sm, whereby Z2 is an element selected from the group consisting of Zr, Hf, Nb, V, Y, Sc and Ta, and whereby x and y are each independently of one another 0?x,y?0.5, preferably 0?x,y?0.1, but substantially below the crystallization temperature of Ba[Al2Si2O8].

Abstract: The invention relates to reaction products of 2-propylheptanol with 1-halo-2,3-epoxypropanes and 1-hydroxy-2,3-epoxypropane (glycidol), to methods for their production, and to their use as cosurfactants, cleaning surfactants or thickeners.

Abstract: In order to provide a decorative coating (9) which exhibits improved temperature resistance and strength on glass and glass-ceramic and which also has no strength-reducing effect on the substrate (3), or at least no longer has any substantially strength-reducing effect on the substrate, the invention envisions a process for producing glass or glass-ceramic articles having a decorative layer in which at least one decorative pigment (13) is mixed with a sol-gel binder (11), and the pigment mixed with the sol-gel binder is cured on the glass or glass-ceramic substrate of the article by annealing, to form a decorative layer having a porous ceramiclike structure.

Abstract: Water soluble radiation curable products (A) obtainable by mixing mixing with or without reaction of at least one hyperbranched polyurethane (a) with at least one photoinitiator (b) or by synthesis of at least one hyperbranched polyurethane (a) in the presence of at least one photoinitiator (b), are used to produce aqueous inks for the ink jet process.

Abstract: A process for coloring a textile substrate comprises a textile substrate (a) being pretreated with an aqueous pretreatment liquor comprising (A) at least one resin selected from melamin derivatives, dimethyloldihydroxy-ethyleneurea (DMDHEU) and derivatives of DMDHEU, and (B) at least one thickener, and thereafter (b) being printed by the ink jet process.

Abstract: The present invention relates to a process for preparing aqueous active compound compositions of active compounds which are poorly soluble in water, in particular of active compounds for the protection of crops and materials. Moreover, the invention relates to the active compound compositions obtainable by the process and to their use for controlling harmful organisms in plants and in the protection of materials. The process comprises the following steps: a) provision of an aqueous suspension of solid active compound particles of at least one active compound having a solubility in water of not more than 5 g/l at 25° C.

Abstract: A process for applying dissolved or dispersed substances (A) from a formulation in a polar medium, preferably aqueous formulation, to substrates (B) using at least one auxiliary substance (C) by a formulation in a polar medium comprising dissolved or dispersed substance (A) and at least one auxiliary substance (C) being applied to substrate (B), wherein the pKa value of auxiliary substance (C) is higher than that of substrate (B) and of dissolved or dispersed substance (A) and wherein auxiliary substance (C) is selected from three-dimensional amphoteric core-shell polymers.

Abstract: An aqueous dispersion comprises a pigment (B) at least partially enveloped by at least one radiation-curable polyurethane (A), at least one radiation-curable polyurethane (A) being obtainable by reaction of (a) at least one di- or polyisocyanate comprising on average from 1 to 10 allophanate groups and on average from 1 to 10 C—C double bonds per molecule, with (b) at least one further diisocyanate and with (c) at least one compound having at least two isocyanate-reactive groups.

Abstract: The present invention relates to UV-curable polyurethane dispersions, to a process for preparing them, and to their use.

Abstract: The present invention relates to an aqueous dispersion comprises a pigment (B) at least partially enveloped by at least one radiation-curable polyurethane (A), at least one radiation-curable polyurethane (A) being obtainable by reaction of (a) at least one diisocyanate with (b) at least one compound having at least two isocyanate-reactive groups and (c) at least one compound of the general formula I where R1 and R2 are the same or different and are independently selected from hydrogen and C1-C10-alkyl, X1 is selected from oxygen and N—R3, A1 is selected from C1-C20-alkylene which is unsubstituted or singly or multiply substituted by C1-C4-alkyl, phenyl or O—C1-C4-alkyl, and in which one or more nonadjacent CH2 groups may be replaced by oxygen; X2 is selected from hydroxyl and NH—R3, R3 is in each occurrence the same or different and selected from hydrogen, C1-C10-alkyl and phenyl.

Abstract: Water soluble radiation curable products (A) obtainable by mixing with or without reaction of at least one hyperbranched polyurethane (a) with at least one compound having at least one ethylenic double bond per molecule (b) or by synthesis of at least one hyperbranched polyurethane (a) in the presence of at least one compound having at least one ethylenic double bond per molecule (b) are used to produce aqueous inks for the ink jet process.

Abstract: The invention relates to a photostructurable body, in particular glass or glass-ceramic, in which the glass is a multicomponent glass and/or the glass-ceramic is a multicomponent glass-ceramic, in each case having a positive change in refractive index ?n as a result of the action of light.

Abstract: Aqueous recording fluids comprising (a) at least one disperse dye, (b) at least two wetting agents.