Abstract: The present invention relates to a pigment and a coating composition comprising such a pigment, wherein it is contemplated that a coating composition containing such pigment is capable of inhibiting corrosion of a substrate to which it is applied. In one embodiment, the pigment comprises a filler having calcium borate, calcium molybdate, and calcium phosphate deposited on the surface of the filler. In an exemplary embodiment, the filler is calcium carbonate.

Abstract: A basecoat including a pigment blend of a coarse ground calcium carbonate and a hyperplaty clay having an average aspect ratio of at least about 40:1.

Abstract: Kaolin clay pigments which contain a minor amount of gypsum provide improved properties of brightness, opacity and bulking to coated sheets.

Abstract: The present invention relates to the use of nanoparticles for the preparation of water-based dispersion adhesives, and especially the use of finely divided barium sulfate therein. The nanoparticles can be used with or without chemical modification. Adhesives of this kind feature improved properties, examples being improved cohesion in conjunction with comparable adhesion and higher heat resistance. Preference is given to dispersion adhesives based on polyacrylate, polyurethane, and epoxy resin.

Abstract: The present invention relates to a pigment and a coating composition comprising such a pigment, wherein it is contemplated that a coating composition containing such pigment is capable of inhibiting corrosion of a substrate to which it is applied. In one embodiment, the pigment comprises a filler having calcium borate, calcium molybdate, and calcium phosphate deposited on the surface of the filler. In an exemplary embodiment, the filler is calcium carbonate.

Abstract: Multifunctional surface-modified cellulose-containing fibers, especially for producing paper and cardboard packagings, are provided with numerous specific advantages regarding production and the product. The invention particularly relates to cellulose compounds and microcomposites in which solid materials, liquids, and dispersed or amorphous additives, for example, are coated onto the surface of the cellulose, and methods for the production of said compounds.

Abstract: A method for producing concrete or mortar based on an exclusively vegetal aggregate, a mineral binding agent, and mixing water is described. Instead of the vegetal aggregate being premineralized in a separate step of the operation, 4 to 14 kg of a non-hydratizable, finely ground mineralizator is added for each cubic meter of vegetable aggregate when the concrete or mortar is being mixed. Raw calcium carbonate is a preferred mineralizator.

Abstract: Disclosed herein are dry aggregated calcium carbonates, comprising calcium carbonate and at least one inorganic binder, wherein the dry aggregated calcium carbonate has a median aggregate particle size (D50) of at least 5 ?m. Also disclosed are compositions comprising such dry aggregated calcium carbonates. Products, such as paints, and methods of making products containing such aggregated calcium carbonate are further disclosed.

Abstract: The invention relates to the use of polyacrylic acids which contain organic terminal groups containing sulphur, comprising at least two carbon atoms, having an average molecular weight Mw of 5 000-30 000 g/mol and which are at least partially neutralized by a base which is selected from the group of alkali hydroxides and ammonia as auxiliary agents for wet grinding of calcium carbonate. The invention also relates to fine particle aqueous suspensions of calcium carbonate which are produced by wet grinding of calcium carbonate in the presence of said polyacrylic acids.

Abstract: The invention relates to a process for regulating the porosity and printing properties of paper, in particular uncoated wood-containing paper such as SC-paper, wherein a sufficient quantity of colloidal PCC having a BET surface area of 10-100 m2/g is used as a filler in the paper to achieve a desired porosity of the paper; as well as paper containing colloidal PCC as filler, and a pigment mixture suitable for paper manufacture and containing colloidal PCC.

Abstract: In various embodiments, a pigment composition is provided comprising a base particle and a dispersing agent, the dispersing agent comprising a salt and/or ester of: (i) an amine, alcohol, and/or alkanol amine and (ii) a polyprotic acid, wherein the mole ratio of the amine, alcohol, and/or alkanol amine to the polyprotic acid is greater than 3:1. In various embodiments, the pigments have improved stability, hiding power, tint strength, and/or gloss.

Abstract: The invention relates to a washable paint comprising about 2.5 to 10 weight percent of a high molecular weight polyethylene glycol having a molecular weight between 2,000 and 20,000, a water swellable clay in the amount of 0.5 to 1.5 weight percent; and a high molecular weight cellulosic thickener in the amount of about 1.0 to 2.5 weight percent, wherein the high molecular weight cellulosic thickener has a viscosity between 500 and 15,000 cps tested as a 2% by weight solution in water at 25° C. using a Brookfield DV-II+ viscometer with a number 21 spindle and a speed of 2 rpm, and wherein the paint has a viscosity of between 5,000 and 50,000 cps tested on a Brookfield DV-II+ viscometer with a number 6 spindle at 10 rpm and 52° C.

Abstract: Ice paint for painting ice surfaces. The ice paint comprises rutile TiO2, precipitated calcium carbonate manufactured to a particle size of 0.8 microns, and water. The rutile TiO2 is combined with the precipitated calcium carbonate in a ratio of at least 1 part rutile TiO2 to 6.5 parts precipitated calcium carbonate.

Abstract: Silica-calcium carbonate composition particles having the characteristics of both synthetic silica and calcium carbonate are described along with paper having the particles internally filled therein and a method for making the particles. In the carbonation reaction, which typically involves a step of forming calcium carbonate, while agitating a calcium hydroxide slurry, a mixed gas of carbon dioxide and air is introduced thereinto and synthetic silica, such as colloidal silica or the like, is added before the carbonation rate arrives at 95% but after commencement of the carbonation reaction, followed by further introduction of the mixed gas to continue the carbonation reaction and completion of the carbonation reaction at the time when the pH of the slurry reaches 7, thereby providing the composite particles.

Abstract: The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble calcium salt, a weak acid, a chelating agent, a weak acid capable of chelating calcium ion, or a mixture thereof. The acid-stabilizer is present in an amount sufficient to provide an aqueous calcium carbonate slurry having an increased calcium ion concentration and an acidic pH. In a typical acid-stabilized calcium carbonate slurry of the invention, the acid-stabilizer is present in an amount sufficient to provide a calcium ion concentration of about 1 millimolar to about 5 molar, preferably from about 1 to about 120 millimolar.

Abstract: Inorganic pigments, having deposited on the pigment surface at least one alkenyl- or alkyl-substituted succinic anhydride and at least one organic polyol, possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic compositions containing said surface-treated pigments.

Abstract: Inorganic pigments treated with at least one amide of a fatty acid and an aliphatic amine possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic compositions containing said surface-treated pigments.

Abstract: The invention relates to the use of a slightly anionic and water-soluble copolymer, as a dispersing agent and/or an agent for assisting the grinding of pigments and/or mineral fillers in aqueous suspension giving on the one hand a low Zeta potential to the aqueous suspensions of the said fillers and/or pigments and on the other hand affording an electro-steric stabilisation of the said suspensions. The invention also relates to the said aqueous suspensions of mineral pigments and/or fillers and their uses in the fields of paper, such as the manufacture or coating of paper, and drilling muds used for petroleum prospecting or extraction. The invention also relates to the use of the said dispersing agents and/or agent for assisting the grinding in the field of paints and plastic materials such as thermoplastic or thermosetting resins.

Abstract: Inorganic pigments treated with one or more of the ?,?-dialkyl substituted linear or branched carboxylic acids and the salts thereof possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic compositions containing said surface-treated pigments.

Abstract: A number of stable mixtures are disclosed containing specific combinations and levels of extender pigments and thickeners. These stable mixtures may be employed, inter alia, as a mixture in a method of making paints using prepaints or as a conventional component in a coating, such as a paint, or other end-use where opacifying pigments are employed.

Abstract: Cationically modified white pigments (W) in particulate form, essentially consisting of a particulate inorganic white pigment (M) of a particle size in the range of 0,1 to 40 ?m and an applied water soluble, cationic, crosslinked polymer (PA) containing quaternary ammonium groups in salt form, obtainable by reaction of epichlorohydrin or of epichlorohydrin derivatives or precursors with amines, under conditions leading to at least partial crosslinking, optionally in combination with an anionic optical brightener (B) and where the molar ratio of (B) to (PA) is such that the number of cationic charges of the total polymer (PA) is higher than the number of anionic charges of the total anionic optical brightener (B), are surprisingly useful as cationic white pigments in various fields of technique, especially in papermaking.

Abstract: The invention relates to a process for producing a coated paper web, According to the process, a paper web is formed from a fibrous raw material in a paper machine, the paper web is coated with a pigment-containing coating mix, and the coated paper web is calendered. According to the invention, the paper web is coated with a coating composition that contains as the mineral pigment mainly a mixture of gypsum and calcium carbonate, the amount of gypsum being at minimum 10% by weight of the total amount of gypsum and calcium carbonate. With mixtures of calcium carbonate and gypsum, such as mixtures of PCC and gypsum and mixtures of PCC, ground carbonate and gypsum, there are obtained simultaneously a sufficient gloss and smoothness as well as a brightness and opacity better than with PCC-kaolin pastes.

Abstract: A method of attaching one or more organic groups onto a particle is described which involves reacting at least one radical with at least one particle wherein the radical is generated from the interaction of at least one transition metal compound with at least one organo-halide compound in the presence of one or more particles capable of radical capture. Variations of this method are also described.

Abstract: Coating composition comprising mineral pigment, for creating a matt or silk coated paper with decreased ink scuff tendency. The coating composition also comprises organic particles, which particles in an amount of 0.5-9.5 weight-% calculated on said mineral pigment, exhibit a particle size of more than 2 &mgr;m and at the most 50 &mgr;m. The invention also relates to a paper which is coated with said coating composition.

Abstract: The invention concerns the use of hydrosoluble homopolymers and/or copolymers of acrylic/or methacrylic acid with one or more acrylic, vinyl or allyl monomers as an aid to the grinding of mineral particles in aqueous suspension, providing them by their use particular optical properties.

Abstract: In a process for preparing a white pigment mixture suitable for coating paper wherein a cationically bulked kaolin clay pigment is dispersed in water in the presence of an anionic dispersant and mixed with a calcium carbonate pigment, the improvement which comprises using an epichlorohydrin amine complex to bulk said kaolin, and employing as the dispersant the combination of at least 0.2% based on the dry weight of said cationically bulked kaolin of a condensed naphthalene sulfonate complex having a molecular weight of 2000 to 10,000 and a sodium polyacrylate salt having a molecular weight of 2000 to 5000, said dispersant being free from lignosulfonate.

Abstract: In a process for preparing a white pigment mixture suitable for coating paper wherein a cationically bulked kaolin clay pigment is dispersed in water in the presence of an anionic dispersant and mixed with a calcium carbonate pigment, the improvement which comprises using an epichlorohydrin amine complex to bulk said kaolin, and employing as the dispersant the combination of at least 0.2% based on the dry weight of said cationically bulked kaolin of a condensed naphthalene sulfonate complex having a molecular weight of 2000 to 10,000 and a sodium polyacrylate salt having a molecular weight of 2000 to 5000, said dispersant being free from lignosulfonate.

Abstract: The invention relates to a method for treating a mineral filler by means of a polydialkylsiloxane and a fatty acid, the hydrophobic fillers thus obtained, and the application thereof in polymers for the manufacture of films and notably “breathable” films.

Abstract: Coating composition comprising mineral pigment, for creating a matt or silk coated paper with decreased ink scuff tendency. The coating composition also comprises organic particles, which particles in an amount of 0.5-9.5 weight-% calculated on said mineral pigment, exhibit a particle size of more than 2 &mgr;m and at the most 50 &mgr;m. The invention also relates to a paper which is coated with said coating composition.

Abstract: A dispersant slurry for making spandex, based on phosphated block poly(alkylsiloxane)-poly(alkyleneether) alcohol or aromatic- or alkylaromatic-terminated phosphated poly(alkyleneether) alcohol dispersants, is provided.

Abstract: The present invention concerns a process for preparing calcium carbonate pigment from calcium oxide and/or calcium hydroxide and carbon dioxide in the presence of water. According to the invention, the starting materials are reacted in fluid state containing at least 20 parts of volume of gas for each part by volume of suspension formed by water and solid substances, and the amount of water is essentially equivalent to the amount which is evaporated during the reaction together with the amount left in a calcium carbonate product which behaves like a powder. By means of the present invention, PCC in powder form can be prepared without the product first having to be separated from a slurry.

Abstract: The present invention is a fly ash filler or filler blend having a particle size distribution with at least three modes that when combined with asphalt produces asphalt composites such as roofing shingles with improved mechanical properties at a lower cost than asphalt shingles produced using conventional calcium carbonate fillers. The present invention also includes a method for producing an asphalt composite, comprising the steps of combining asphalt with a fly ash filler or a filler blend having a particle size distribution with at least three modes and producing an asphalt composite with the resulting filled asphalt. The present invention further includes a method of determining what fly ashes can be used as fillers for asphalt composites such as roofing shingles.

Abstract: A method of attaching one or more organic groups onto a particle is described which involves reacting at least one radical with at least one particle wherein the radical is generated from the interaction of at least one transition metal compound with at least one organo-halide compound in the presence of one or more particles capable of radical capture. Variations of this method are also described.

Abstract: A physical and chemical mixture of aggregative material, chemical products, mineral fillers and/or special pigments in dispersion, with metallic effect, designed to be added to aqueous-phase paint products having a monochromatic-flocculate or multichromatic-flocculate base (known among decorative paint products by the trade name of aqueous-phase Multicolor, Antiche Terre Fiorentine and/or the like), or aqueous-phase paint products without flocculate components (known among decorative paint products by the trade name of Arteacqua glazings and/or the like) in order to obtain a newly devised single-color and multicolor mural-coating decorative paint product both, with and without metallized effect, which can be applied using a spatula, paintbrush, glove and/or roller or the like, and a process for the production thereof.

Abstract: A black colorant for ink-jet printing ink, has an average particle diameter of 0.001 to 0.15 &mgr;m, and comprises: extender pigments as core particles; a gluing agent-coating layer formed on at least a part or the surface of said core particles; and a black pigment coat uniformly formed on at least a part of said gluing agent-coating layer. The black colorant for ink-jet printing ink exhibits not only a high blackness and an excellent tinting strength, but also excellent dispersibility and light resistance in spite of fine particles.

Abstract: A paper having an improved print quality comprises a paper substrate having a surface with a surface roughness of less than 6 microns and a surface gloss of 5-80% which surface has been coated with a light-weight, low solids content, top coat. The top coat may comprise (i) a rheology modifier/binder component and at least one pigment or (ii) at least one binder coated pigment. The top coat provides a significant improvement to the delta gloss of the so-treated paper.

Abstract: A physical and chemical mixture of aggregative material, chemical products, mineral fillers and/or special pigments in dispersion, with metallic effect, designed to be added to aqueous-phase paint products having a monochromatic-flocculate or multichromatic-flocculate base (known among decorative paint products by the trade name of aqueous-phase Multicolor, Antiche Terre Fiorentine and/or the like), or aqueous-phase paint products without flocculate components (known among decorative paint products by the trade name of Arteacqua glazings and/or the like) in order to obtain a newly devised single-colour and multicolour mural-coating decorative paint product both, with and without metallized effect, which can be applied using a spatula, paintbrush, glove and/or roller or the like, and a process for the production thereof.

Abstract: A colorant for ink-jet printing ink of the present invention, has an average particle diameter of 0.001 to 0.15 &mgr;m, and comprises: extender pigments as core particles; a gluing agent coating layer formed on at least a part of surface of said core particle; and an organic pigment coat uniformly formed on at least a part of said gluing agent coating layer. The colorant for ink-jet printing ink exhibits not only a high tinting strength and a clear hue, but also excellent dispersibility and light resistance in spite of fine particles.

Abstract: A method of making a composite pigment of precipitated calcium carbonate (PCC) and a silicon compound, in which the resulting composite pigment is endowed with an excellent combination of optical and mechanical properties. Among other things, a PCC/silicate composite pigment made according to this invention imparts increased bulk, light scattering power, porosity and printing properties to paper. The composite pigment material made according to this invention also is very competitive from the standpoint of its production cost. The method for making the composite pigment includes the step of introducing a soluble silicate compound into an aqueous medium containing a precipitate of calcium carbonate formed by carbonation of lime milk, and at a time when the calcium carbonate precipitation reaction has progressed to near completion.

Abstract: A method of producing a rheologically stable concentrated aqueous suspension of a particulate alkaline earth metal carbonate which method comprises the following steps: (a) preparing a dilute aqueous suspension of the carbonate having a solids content of not more than 40% by weight; (b) dewatering the dilute aqueous suspension to form a carbonate suspension having a solids content in the range of from 45% to 65% by weight; (c) optionally mixing with the dewatered suspension formed in step (b) a dispersing agent for the carbonate to form a fluid suspension; (d) further dewatering the fluid suspension formed in step (b) by thermal evaporation under reduced pressure to raise the solids content of the suspension by a further differential amount of at least 5% by weight; and (e) after at least some of the dewatering in step (c) treating the suspension by a mechanical working process in which at least 1 kW.hr per tonne of carbonate on a dry weight basis is dissipated to refluidise the suspension.

Abstract: A manufactured granular substrate composition suitable for use as a carrier for active chemical agents. The composition includes one or more mineral components having a bulk density greater than about 70 pounds per cubic foot. The composition also contains about one or more light weight additives and one or more water soluble binders. The resulting manufactured granular substrate has a bulk density of less than about 55 pounds per cubic foot with a size guide number of about 75 to about 300.

Abstract: Aggregated mineral pigments (such as kaolin clay pigments) having a high surface area and useful in coating and filling compositions for ink jet printing media are manufactured by dry grinding an unground mineral composition starting material and then optionally acid treating the ground material.

Abstract: The invention relates to a solid pigment composition comprising a) at least one pigment, b) at least one compound selected from the group consisting of b0) a phenol-styrene-polyglycol ether or an ionically modified phenol-styrene-polyglycol ether, b1) a condensation product prepared from b1A) sulphonated aromatics b1B) aldehydes and/or ketones and b1C) optionally one or more compounds selected from the group of unsulphonated aromatics, urea and urea derivatives, and b2) phosphoric acid, phosphonic acid and derivatives thereof, and c) at least one organic thickener.

Abstract: Organic and inorganic composite pigments having an average particle diameter of 0.01 to 10.0 &mgr;m composed of a white inorganic particle, an organosilane compound obtained from alkoxysilanes, or polysiloxanes coating on the white inorganic particle, and an organic pigment coat formed on said coating. An ultraviolet light-absorbing agent is present in any portion from the surface of the white inorganic particle to surface of the organic pigment coat. These composite pigments have reduced amounts of organic pigments desorbed from their surface and exhibit excellent light resistance due to their ultraviolet absorbing property.

Abstract: A black colorant for ink-jet printing ink, has an average particle diameter of 0.001 to 0.

Abstract: The present invention relates to a product, a process for its preparation and the use of such in plastic film production. More specifically, the present invention relates to an antiblock talc, a process for the preparation of such and its use as an additive in the production of polyolefin film. Polyolefin films produced according to the process of the present invention are useful in a broad range of packaging and film covering applications.

Abstract: A pigment dispersion suitable for use in the manufacture of pigmented coating compositions is provided. The pigment dispersion comprises a) pigment, b) carrier, and c) an acrylic/polyether comb-branched copolymer dispersant wherein the polyether portion of the copolymer is free of any acidic groups. A method of making a present dispersion is also provided. The method comprises mixing together, in any combination: a) pigment, b) carrier, and c) an acrylic/polyether comb-branched copolymer dispersant wherein the polyether portion of the copolymer is free of any acidic groups. A pigmented coating composition is also provided comprising a pigment dispersion made in accordance with present invention.

Abstract: The invention relates to a process for producing a coated paper web. According to the process, a paper web is formed from a fibrous raw material in a paper machine, the paper web is coated with a pigment-containing coating mix, and the coated paper web is calendered. According to the invention, the paper web is coated with a coating composition that contains as the mineral pigment mainly a mixture of gypsum and calcium carbonate, the amount of gypsum being at minimum 10% by weight of the total amount of gypsum and calcium carbonate. With mixtures of calcium carbonate and gypsum, such as mixtures of PCC and gypsum and mixtures of PCC, ground carbonate and gypsum, there are obtained simultaneously a sufficient gloss and smoothness as well as a brightness and opacity better than with PCC-kaolin pastes.

Abstract: Organic and inorganic composite pigments have an average particle diameter of 0.01 to 10.

Abstract: There is disclosed a method for the preparation of a precipitated calcium carbonate (PCC) for use as a pigment in paper coating compositions, the method comprising the steps of (a) carbonating an aqueous lime-containing medium to produce an aqueous suspension of a PCC predominantly in a selected crystal form, (b) at least partially dewatering the PCC-containing suspension; and (c) subjecting the PCC-containing suspension to comminution by high shear attrition grinding with an attrition grinding medium. Steps (b) and (c) may be applied in either order, ie. (b) followed by (c) or alternatively (c) followed by (b). The dewatering step (b) is preferably carried out using a pressure filter device operating at a pressure of at least 5 MPa, preferably at least 10 MPa. A pH reduction step may be applied after steps (b) and (c). Also disclosed are pigments produced by the method and pigment and paper coating compositions including such pigments.