Abstract: Described is a production process for the preparation of an organic titanium derivative useful for the preparation of yellow inks for digital printing on ceramics, comprising the following steps: (i) mixing an organic and/or inorganic compound of titanium (IV) and a 1,3-diol of formula: wherein R1, R2, R3 and R4 are independently selected from H and a linear or branched C1-C6 alkyl radical, in the presence of at least an organic solvent immiscible with water and subsequent removal of reaction by-products; (ii) adding water to the reaction mixture in a H2O:Ti?2 molar ratio and subsequent removal of unreacted water and reaction by-products; (iii) maturing the reaction mixture at a temperature of 180-200° C. for 16-50 hours. Also described are the titanium derivative obtainable by means of the above-reported process, an ink that contains the derivative and a method of digital printing on ceramics that uses said ink.

Abstract: Described is a production process for the preparation of an organic titanium derivative useful for the preparation of yellow inks for digital printing on ceramics, comprising the following steps: (i) mixing an organic and/or inorganic compound of titanium (IV) and a 1,3-diol of formula: wherein R1, R2, R3 and R4 are independently selected from H and a linear or branched C1-C6 alkyl radical, in the presence of at least an organic solvent immiscible with water and subsequent removal of reaction by-products; (ii) adding water to the reaction mixture in a H2O:Ti?2 molar ratio and subsequent removal of unreacted water and reaction by-products; (iii) maturing the reaction mixture at a temperature of 180-200° C. for 16-50 hours. Also described are the titanium derivative obtainable by means of the above-reported process, an ink that contains the derivative and a method of digital printing on ceramics that uses said ink.

Abstract: The present invention relates to an ink set containing chromophoric metals for digital printing on ceramic materials additive-treated with silica and titanium dioxide, a process for decorating ceramic materials by digital printing using said ink set and decorated ceramic articles obtainable by said process.

Abstract: The invention relates to a new process for colouring ceramic materials by using aqueous solutions of chromophore ions. In particular, certain types of silica are added to the ceramic mixes which are to be coloured, after which aqueous or organic solutions comprising inorganic salts of Fe(II) and/or Fe (III), or organic derivatives of Fe (II) and/or Fe (III) are applied to the surface of the said additive-containing ceramic mixes.

Abstract: The present invention relates to an ink set containing chromophoric metals for digital printing on ceramic materials additive-treated with silica and titanium dioxide, a process for decorating ceramic materials by digital printing using said ink set and decorated ceramic articles obtainable by said process.

Abstract: The invention relates to a new process for coloring ceramic materials by using aqueous solutions of chromophore ions. In particular, certain types of silica are added to the ceramic mixes which are to be colored, after which aqueous or organic solutions comprising inorganic salts of Fe (II) and/or Fe (III), or organic derivatives of Fe (II) and/or Fe (III) are applied to the surface of the said additive-containing ceramic mixes.

Abstract: The present invention relates to new liquid coloring compositions to be applied before firing to obtain, after firing, the white coloration of ceramic manufactured articles, or the decoloration of colored ceramic manufactured articles. The present invention also relates to new processes for coloring or decoloring using said liquid coloring compositions as well as to colored or decolored ceramic objects, obtainable with the new processes.

Abstract: The invention relates to a new process for colouring ceramic materials by using aqueous solutions of chromophore ions. In particular, certain types of silica are added to the ceramic mixes which are to be coloured, after which aqueous or organic solutions comprising inorganic salts of Fe (II) and/or Fe (III), or organic derivatives of Fe (II) and/or Fe (III) are applied to the surface of the said additive-containing ceramic mixes.

Abstract: Process for colouring with pink/orange shades on surface and to a variable depth manufactured items obtained from a ceramic mass added with zinc oxide in an amount of 5% to 20% by weight, or with zinc silicate, said process uses a composition being in form of an aqueous or hydroalcoholic solution comprising Cr organic derivatives or inorganic salts alone or in combination with Fe organic derivatives or inorganic salts and/or Zn organic derivatives or inorganic salts, which is applied by controlled absorption onto the surface of the ceramic body before its firing in an oven according to a standard ceramic cycle.

Abstract: Composition whereby ceramic manufactured articles are colored in shades from pink to violet, such composition includes of a monovalent gold thiolate water solution or mixture of water with a water soluble organic solvent according to the following formulas Au—S—R—X and Au—S—R—H, where R stands for a linear or branched bivalent radical of aliphatic or aromatic or cycloaliphatic or heterocyclic type optionally with substituents, such as for example aminic, amidic, hydroxylic, carboxylic, hydrocarbylic or carbonylic groups or CONH—, in the chain; X stands for a monovalent group selected out of —COOH, SO2OH, —OH, —CONH2, —NH2; O—P(O)(OH)2, in which H atoms may be replaced by alkyl groups and wherein acid group may be salified with amines or alkaline or alkaline earth metals and basic groups may optionally be salified with organic acids

Abstract: Composition whereby ceramic manufactured articles, obtained by molding pressing a ceramic mixture added with 1% to 10% TiO2 by wt., are colored in shades from yellow ocher to sienna, said composition being an aqueous or hydroalcoholic solution including tungsten and chromium inorganic compounds or organic derivatives, which is applied by controlled absorption to the surface of the ceramic material before firing.

Abstract: Composition whereby ceramic manufactured articles, obtained by moulding a conventional ceramic mixture without added TiO2., are colored from yellow to orange, said composition consisting of an aqueous solution of inorganic compounds or organic complexes of titanium and chromium combined with antimony or tungsten or mixtures thereof, in quantities corresponding to 2 to 6% by wt. Ti, 3 to 12% Sb (or 4 to 14% tungsten) and 0.2 to 2.5% chromium.

Abstract: Composition for coloring ceramic articles obtained from ceramic mass containing TiO.sub.2 as such, in shades ranging from yellow to orange, consisting of an aqueous or hydroalcoholic solution to be applied to the surface to colored before final firing and containing soluble compounds of chromium/antimony or of chromium/zinc or chromium/zirconium or chromium/manganese mixtures.

Abstract: Composition whereby ceramic manufactured articles, obtained by molding pressing a ceramic mixture added with 1% to 10% TiO.sub.2 by wt., are colored in shades from yellow ocher to sienna, said composition being an aqueous or hydroalcoholic solution including tungsten and chromium inorganic compounds or organic derivatives, which is applied by controlled absorption to the surface of the ceramic material before firing.

Abstract: Novel piperidine-triazine compounds of the formula (Ia) and (Ib) suitable for use as light stabilisers, heat stabilisers and oxidation stabilisers for organic materials. The meanings of R.sub.1, R.sub.2, R.sub.3, G.sub.1, G.sub.2, L.sub.1, L.sub.2, m and n are defined in the text.

Abstract: Compounds possessing both a hindered amine moiety, such as a derivative of 2,2,6,6-tetramethylpiperidine, and a hydroxylamine moiety where the N-hydroxy group is not attached to a nitrogen atom in a piperidine ring are valuable stabilizers for protecting polymer compositions against the deleterious effects of actinic light and from the adverse effects of high temperature polymer processing environments.

Abstract: Compounds possessing both a hindered amine moiety, such as a derivative of 2,2,6,6-tetramethylpiperidine, and a hydroxylamine moiety where the N-hydroxy group is not attached to a nitrogen atom in a piperidine ring are valuable stabilizers for protecting polymer compositions against the deleterious effects of actinic light and from the adverse effects of high temperature polymer processing environments.

Abstract: Compounds possessing both a hindered amine moiety, such as a derivative of 2,2,6,6-tetramethylpiperidine, and a hydroxylamine moiety where the N-hydroxy group is not attached to a nitrogen atom in a piperidine ring are valuable stabilizers for protecting polymer compositions against the deleterious effects of actinic light and from the adverse effects of high temperature polymer processing environments.

Abstract: Novel process for the preparation of 2,2,6,6-tetramethyl-4-piperidyloxy-1,3,5-triazines, based on the reaction of cyanuric chloride with C.sub.1 -C.sub.4 alkanols or with sodium or potassium C.sub.1 -C.sub.4 alkoxides and subsequent reaction with 2,2,6,6-tetramethyl-4-piperidinols in the presence of a transesterification catalyst.The various reactions can be carried out in the same reactor, without isolation of the intermediates.

Abstract: Compounds possessing both a hindered amine moiety, such as a derivative of 2,2,6,6-tetramethylpiperidine, and a hydroxylamine moiety where the N-hydroxy group is not attached to a nitrogen atom in a piperidine ring are valuable stabilizers for protecting polymer compositions against the deleterious effects of actinic light and from the adverse effects of high temperature polymer processing environments.