Abstract: A semi-transparent coating material for coating glass or glass ceramics includes at least one sol-gel hybrid-polymer coating system having a hybrid-polymer or inorganic sol-gel-based matrix, and nanoparticles and nanoscale pigments and/or dyes are added to the hybrid-polymer or inorganic sol-gel-based matrix.

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 coating solution made from a mixture of at least one silane and at least one polysiloxane which can be hardened on a substrate by hydrolysis and condensation to give a coating on the substrate, wherein the at least one silane is of general formula RxSi(OR?)4-x and the at least one polysiloxane is of general formula [R2SiO]y or R3Si—(O—SiR2)Y—O—SiR3, where R independently=alkyl, aryl, arylalkyl, alkylaryl or H, Rprime independently=H, methyl, ethyl, n- or i-propyl, n-, iso-, sec.- or tert.-butyl, x=0 or 1 (for the first silane), x=0, 1, 2, 3 or 4 (for each further silane) and y=a whole number of at least 2, wherein the coating solution includes at least one alkali or earth alkali oxide or hydroxide.

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 coating solution made from a mixture of at least one silane and at least one polysiloxane which can be hardened on a substrate by hydrolysis and condensation to give a coating on the substrate, wherein the at least one silane is of general formula PxSi(OR?)4?x and the at least one polysiloxane is of general formula [R2SiO]y or R3Si—(O—SiR2)Y—O—SiR3, where R independently=alkyl, aryl, arylalkyl, alkylaryl or H, Rprime independently=H, methyl, ethyl, n- or i-propyl, n-, iso-, sec.- or tert.-butyl, x=0 or 1 (for the first silane), x=0, 1 , 2, 3 or 4 (for each further silane) and y=a whole number of at least 2, wherein the coating solution includes at least one alkali or earth alkali oxide or hydroxide.

Abstract: A enamel-free paste for use especially in ovens at temperatures of up to about 420° C. The paste contains a matrix based upon a silicon (Si) polymer that can be obtained by the hydrolysis and condensation of at least one silane of general formula RxSi(OR?)4-x with at least one polysiloxane of general formula [R2SiO]y, or R3Si—(O—SiR2)y—O—SiR3. The radicals R can independently be alkyl, aryl,arylalkyl, alkylaryl or H; the radicals R? can independently be H, methyl,ethyl, n- or i-propyl, n-, iso-, sec- or tert-butyl; x represents 0 or 1 (for the first silane); x represents 0, 1, 2, 3, or 4 (for each subsequent silane); and y represents a whole number, which is at least 2 and can be approximately infinite. The paste additionally includes a high-boiling organic solvent with a boiling point of 100° C. or above, and a pigment as the solvent, but does not include alcohol with a boiling point of below 100° C.

Abstract: Processes and compositions for printing substrates. A printing paste containing a matrix-forming precondensate containing polyorganosiloxanes obtained by a sol-gel process and at least one coloring, luminescent, conductive and/or catalytically active filler is applied imagewise to the substrate and is densified by heat treatment at a temperature below the glass transition temperature of the matrix being formed. The processes and printing pastes are suitable, for example, for the production of conductor tracks and decorative patterns.

Abstract: Process for producing substrates with a layer comprising an inorganic gel, glass, glass-ceramic or ceramic material, in which a coating composition comprising nanosize particles and water soluble organic flexibilizers is applied to the substrate and heat treated. Crack-free and transparent thick films can be obtained by means of the process. The coated substrates are particularly suitable for optical, optoelectronic, electronic, micromechanical or dirt-repellent components.

Abstract: The wet film thickness during spraying of the coating composition onto the substrate is preferably adjusted such that it is greater by a factor of at least 8 than the target dry film thickness.

Abstract: A description is given of coated inorganic pigments comprising an organic pigment which has a coating, prepared by the sol-gel process from glass-forming components and densified to form a xerogel or glass, having a layer thickness of at least 0.8 .mu.m. These pigments are prepared by spray drying a sol-pigment dispersion, followed if desired by thermal densification of the xerogel layer to form a glass layer. The coated pigments are suitable for producing enamels and moldings.