The present invention relates to a breathable film having a basis weight from 1 to 15 g/m2 comprising at least one thermoplastic polymer and a surface-treated filler material comprising calcium carbonate. The surface-treated filler material has a specific particle size distribution and a specific surface-treatment layer. The present invention further relates to a process for producing the breathable film, the use of a surface-treated filler material comprising calcium carbonate as a filler in a breathable film, an article comprising the breathable film and uses of the breathable film.
The present invention relates to a filled polymer composition comprising polyethylene, polypropylene and an ultrafine calcium carbonate-containing filler material surface-treated with a surface-treatment agent, which has a total amount of carbon atoms from C4 to C34 and comprises at least one carboxyl group and/or a derivative thereof. The present invention further relates to a process for producing said filled polymer composition, the use of the surface-treated calcium carbonate-containing filler material for improving the mechanical properties of a polymer composition comprising polyethylene and polypropylene, as well as an article comprising the inventive filled polymer composition.
The present invention relates to a method for performing a condensation reaction by heterogeneous catalysis using a surface-reacted calcium carbonate catalyst and the use of a dry surface-reacted calcium carbonate as a catalyst. The condensation reaction involves reacting a first substrate comprising a C=O double bond and a second substrate comprising an activated hydrogen to obtain a reaction mixture comprising one or more condensation products and one or more condensation byproducts.
C07C 45/74 - Préparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés par des réactions ne créant pas de groupe C=O par isomérisationPréparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés par des réactions ne créant pas de groupe C=O par modification de la taille du squelette carboné par augmentation du nombre d'atomes de carbone par réaction de composés comportant des groupes C=O sur eux-mêmes ou avec d'autres composés comportant des groupes C=O combinée avec une déshydratation
C07C 47/21 - Composés non saturés comportant des groupes —CHO liés à des atomes de carbone acycliques avec uniquement des liaisons doubles carbone-carbone comme insaturation
C07C 49/796 - Cétones comportant un groupe cétone lié à un cycle aromatique à six chaînons avec insaturation autre que celle d'un cycle aromatique polycycliques
C07C 253/30 - Préparation de nitriles d'acides carboxyliques par des réactions n'impliquant pas la formation de groupes cyano
C07C 255/34 - Nitriles d'acides carboxyliques ayant des groupes cyano liés à des atomes de carbone acycliques ayant des groupes cyano liés à des atomes de carbone acycliques d'un squelette carboné contenant au moins un cycle aromatique à six chaînons avec des groupes cyano reliés au cycle aromatique à six chaînons ou au système cyclique condensé contenant ce cycle, par l'intermédiaire de chaînes carbonées non saturées
4.
A MOISTURE-CURING ONE-COMPONENT POLYMER COMPOSITION COMPRISING A NATURAL GROUND CALCIUM CARBONATE (GCC)
The present invention relates to a moisture-curing one-component polymer composition comprising a polymer material and a natural ground calcium carbonate (GCC), a cured product obtained by curing the moisture-curing one-component polymer composition, a process for preparing such a moisture-curing one-component polymer composition as well as a process for preparing such a cured product and the use of a natural ground calcium carbonate (GCC) for decreasing the processing time for preparing such a moisture-curing one-component polymer composition and/or increasing the elongation at break of such a cured product.
The present invention relates to the use of a porous filler for reducing the gas permeability of an elastomer composition, as well as to a process for producing the elastomer composition comprising the porous filler and the elastomer composition itself. The porous filler is selected from surface-reacted calcium carbonate, precipitated hydromagnesite and mixtures thereof. The addition of the porous filler to the elastomer composition allows for reducing the gas permeability of the elastomer composition while retaining or improving the mechanical properties of the elastomer composition.
The present invention relates to a drilling fluid comprising an alkaline earth metal mineral carrier having an intra-particle intruded specific pore volume of at least 0.8 cm3/g, a process for producing a drilling fluid and the use of a loaded mineral carrier having an intra-particle intruded specific pore volume of at least 0.8 cm3/g for the delivery of a surfactant to a drilling fluid.
The present invention refers to a method for the production of granules comprising surface-reacted calcium carbonate, granules comprising a surface-reacted calcium carbonate having a bulk density ranging from 0.25 to 0.70 g/mL, preferably from 0.28 to 0.65 g/mL, more preferably from 0.30 to 0.60 g/mL, and most preferably from 0.35 to 0.60 g/mL and the use of the granules n a nutraceuticalproduct, agricultural product, veterinary product, cosmetic product, preferably in a dry cosmetic and/or dry skin care composition, home product, food product, packaging product or personal care product, preferably in an oral care composition, or as excipient in a pharmaceutical product.
The present invention refers to a surface treated filler material product comprising a) at least one calcium carbonate-containing filler material and b) a treatment layer on the surface of the at least one calcium carbonate-containing filler material comprising i. maleic anhydride grafted polyethylene and/or maleic anhydride grafted polypropylene and ii. at least one hydrophobizing agent. Furthermore, a process for preparing the inventive surface treated filler material product is disclosed, as well as a polymer composition comprising at least one polymeric resin and the inventive surface treated filler material product. Additionally, a fiber and/or filament and/or film and/or thread and/or sheet and/or pipe and/or profile and/or mold and/or, injection molded compound and/or blow molded compound comprising the inventive surface treated filler material product is disclosed as well as the use of the inventive surface treated mineral filler product in a polymer composition, for improving the mechanical and/or rheological properties of the polymer composition.
C08K 9/04 - Ingrédients traités par des substances organiques
C08K 9/08 - Ingrédients agglomérés par traitement avec un liant
C08L 51/06 - Compositions contenant des polymères greffés dans lesquels le composant greffé est obtenu par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carboneCompositions contenant des dérivés de tels polymères greffés sur des homopolymères ou des copolymères d'hydrocarbures aliphatiques ne contenant qu'une seule liaison double carbone-carbone
9.
PROCESS FOR WATER BASED MINERAL MATERIAL SLURRY SURFACE WHITENING
The process relates to mineral material slurries used in concrete, sealants, paper, paint or plastic applications, wherein the surface of the wet mineral matter slurry displays an increased whitening.
C09C 3/10 - Traitement par des composés organiques macromoléculaires
D21H 17/00 - Matériaux non fibreux ajoutés à la pâte caractérisés par leur constitutionMatériaux d'imprégnation du papier caractérisés par leur constitution
G01N 21/25 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes
10.
PROCESS FOR WATER BASED MINERAL MATERIAL SLURRY SURFACE WHITENING
The process relates to mineral material slurries used in concrete, sealants, paper, paint or plastic applications, wherein the surface of the wet mineral matter slurry displays an increased whitening.
C09C 3/10 - Traitement par des composés organiques macromoléculaires
D21H 17/00 - Matériaux non fibreux ajoutés à la pâte caractérisés par leur constitutionMatériaux d'imprégnation du papier caractérisés par leur constitution
G01N 21/25 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes
11.
MINERAL COMPOSITION, ESPECIALLY FOR USE IN PAPER FILLERS AND PAPER OR PLASTIC COATINGS
A mineral composition comprising mineral particles, said mineral particles, when in a densely compacted bed form, having a volume defined median pore diameter from 0.01 to 0.04 micrometre, and having an intruded total specific void volume of 0.1-0.3 cm3/g. A specific advantage of this composition is that it as a component in a coating, allows the passage of ink solvent into the base paper while retaining the ink molecules on the surface.
C09C 1/02 - Composés du magnésium ou des métaux alcalino-terreux
C09C 3/04 - Traitement physique, p. ex. broyage, traitement par des vibrations ultrasoniques
D21H 17/00 - Matériaux non fibreux ajoutés à la pâte caractérisés par leur constitutionMatériaux d'imprégnation du papier caractérisés par leur constitution
12.
SOIL CONDITIONERS AND FERTILISERS HAVING DYNAMIC DISINTEGRATION, METHOD FOR MANUFACTURING SAME, AND USES THEREOF IN AGRICULTURE
The invention relates to a particularly basic inorganic soil conditioner containing an inorganic carbonate as the base thereof, characterised in that it comprises at least one "dynamic disintegration" agent capable of causing a breakdown, considerable fragmentation, dispersion, and considerable "dispersion" within the granule, i.e. a force inside and/or on the surface of the granule that tends to cause the granule to break down or "explode" when said granule contacts the soil, and specifically contacts the water or moisture of the soil, and in that said carbonate is preferably natural or precipitated calcium carbonate.
C05D 3/02 - Engrais calciques à partir de pierre à chaux, carbonate de calcium, hydrate de calcium, de chaux éteinte, oxyde de calcium, composés calciques résiduaires
C05G 3/00 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais
13.
METHOD FOR PREPARING AQUEOUS SUSPENSIONS OF MINERAL MATERIALS USING AMINES IN COMBINATION WITH VINYL CARBOXYLIC POLYMERS
The invention relates to the preparation of an aqueous suspension of mineral material by means of dispersion and/or grinding in the presence of at least one amine and one vinyl carboxylic polymer, in which the amine makes it possible to reduce the amount of polymer. The invention also relates to the use of the suspension obtained.
The present invention concerns a calcium carbonate containing material having increased bulk density at equal or improved flowability, and a method of producing such a material. The inventive process comprises the step of contacting a calcium carbonate containing mineral powder with a solution or emulsion or dispersion of a binder.
The present invention relates to a process for the preparation of precipitated calcium carbonate comprising the steps of a) providing and calcining calcium carbonate comprising material; b) slaking the reaction product obtained from step a) with an aqueous ammonium chloride solution; c) separating insoluble components from the calcium chloride solution obtained from step b); d) carbonating the calcium chloride solution obtained from step c); e) separating the precipitated calcium carbonate obtained from step d); the precipitated calcium carbonate obtained by this process, as well as uses thereof.
C09C 1/02 - Composés du magnésium ou des métaux alcalino-terreux
16.
PROCESS FOR THE PREPARATION OF CEMENT, MORTARS, CONCRETE COMPOSITIONS CONTAINING A CALCIUM CARBONATE - BASED FILLER (PRE) -TREATED WITH A SUPERPLASTICIZER, COMPOSITIONS AND CEMENT PRODUCTS OBTAINED AND THEIR APPLICATIONS
The invention concerns a PROCESS for the preparation of cement / mortar / concrete (for simplicity: "cement") compositions or systems, (hereafter "cement" compositions or systems for simplicity), of a general known type, in which the filler(s) is/are comprising or consist of "calcium carbonate - based filler(s)", comprising at least one step where the said filler(s) is / are treated with an efficient treating amount of at least one treating agent consisting of or comprising superplastifier(s). The main purpose of this invention is to build a process aimed at providing improved, "High performance", FLUID, cement or mortars or concrete systems or compositions having an improved compacity, an improved flowability, and globally speaking a definitely improved "workability", and "regularity" of the properties of the final systems. The present invention also concerns a filler for "cement" compositions, characterized in that if consists of, or comprises, a calcium- carbonate-based filler or blends of same, pre-treated with an "efficient amount" of at least one superplastifier.
C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
17.
MICRONIZED CACO3 SLURRY INJECTION SYSTEM FOR THE REMINERALIZATION OF DESALINATED AND FRESH WATER
The present invention concerns a process for treating water and the use of calcium carbonate in such a process. In particular, the present invention is directed to a process for remineralization of water comprising the steps of providing feed water, and injecting gaseous carbon dioxide and a slurry into the feed water, wherein the slurry comprises micronized calcium carbonate.
C02F 1/68 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par addition de substances spécifiées, pour améliorer l'eau potable, p. ex. par addition d'oligo-éléments
18.
PROCESS FOR THE PREPARATION OF SURFACE-TREATED CALCIUM CARBONATE MATERIAL AND USE OF SAME IN THE CONTROL OF ORGANIC MATERIAL IN AN AQUEOUS MEDIUM
The present invention relates to a process for the production of a surface-treated calcium carbonate, the use of this surface-treated calcium carbonate in a process for the control of organic material in an aqueous medium, as well as to a composite of surface-treated calcium carbonate and organic material, such as a composite of surface-treated calcium carbonate and to the use of such a composite.
C09C 1/02 - Composés du magnésium ou des métaux alcalino-terreux
C02F 1/68 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par addition de substances spécifiées, pour améliorer l'eau potable, p. ex. par addition d'oligo-éléments
The present invention concerns a print medium for inkjet printing and a method of producing such a print medium. In particular, the present invention is directed to a print medium comprising a base layer having a first side and a reverse side, an absorptive layer being in contact with the first side of the base layer, and a topcoat being in contact with the absorptive layer.
B41M 5/50 - Feuilles d'enregistrement caractérisées par les revêtements utilisés pour améliorer la réceptivité aux encres, aux colorants ou aux pigments, p. ex. pour jet d'encre ou pour l'enregistrement par transfert thermique de colorants
D21H 19/82 - Papier comprenant plusieurs couches superposées
20.
USE OF 2-AMINOETHANOL AS ADDITIVE IN AQUEOUS SUSPENSIONS OF CALCIUM CARBONATE COMPRISING MATERIALS
Use of 2-aminoethanol as an additive in an aqueous suspension, containing from 25 to 62 vol. % of at least one calcium carbonate-comprising material, wherein the use provides improved stability with regard to the conductivity of the suspension.
The invention relates to a process for producing a coated paper useful for later flexographic printing without intermediary drying, wherein at least one coat layer is applied to an uncoated paper. The invention provides that at least one coat layer used is a coating material comprising pigments and fillers which at least partly contains particles whose specific surface area is not less than 20 m2/g, so that the coated paper achieves a coat layer having a droplet area of not more than 30 cm2 and the coat layer achieves a pore structure having a pore volume of all pores between not less than 0.1 to 0.5 cm3/g and a monomodal, bimodal or multimodal pore size distribution with a pore diameter of 0.01 to 10 μm, wherein the droplet area is determined using a penetration droplet test and the pore volume is determined using conventional mercury porosimetry.
The present invention relates to a process for preparing a surface treated mineral filler product, and to its preferred use in the field of plastic applications, and in particular polypropylene (PP)-or polyethylene (PE)-based breathable or extrusion coating film applications.
The present invention relates to the technical field of treated mineral filler products. The invention further relates to a process for preparing such treated mineral filler products, and to its preferred use in the field of plastic applications, and in particular polypropylene (PP)-or polyethylene (PE)-based breathable or extrusion coating film applications.
The present invention relates to a process for manufacturing high solids aqueous suspensions of mineral materials comprising the steps of providing at least one mineral material, preparing an aqueous suspension comprising the at least one mineral material, grinding the resulting aqueous suspension, centrifuging the ground aqueous suspension, and concentrating the centrifuged product of step d) by flash cooling; the high solids aqueous suspension of mineral materials obtained by this process, as well as the use thereof.
C09C 3/04 - Traitement physique, p. ex. broyage, traitement par des vibrations ultrasoniques
D21H 17/00 - Matériaux non fibreux ajoutés à la pâte caractérisés par leur constitutionMatériaux d'imprégnation du papier caractérisés par leur constitution
A process for the production of composite materials comprising nano-fibrillar cellulose gels, by providing cellulose fibres and at least one filler and/or pigment, combining the cellulose fibres and the at least one filler and/or pigment, fibrillating the cellulose fibres in the presence of the at least one filler and/or pigment until a gel is formed, subsequently providing at least one further filler and/or pigment and combining the gel with the at least one further filler and/or pigment.
A process for manufacturing structured material by providing cellulose fibres and at least one filler and/or pigment, combining the cellulose fibres and the at least one filler and/or pigment, fibrillating the cellulose fibres in the presence of the at least one filler and/or pigment until a gel is formed, subsequently providing additional non-fibrillated fibres, and combining the gel with the additional non-fibrillated fibres.
The present invention relates to a system and a method for the concentration of slurry, especially mineral containing slurry. The invention provides a system comprising an electrophoresis unit and a separation unit, where the separation unit comprises a recipient, preferably of half cylindrical form, with adjusted flanks for separating the solid material or cake from the rotating anodes and a sliding carriage suitable for closing the recipient and stripping resting solid material from the flanks into the recipient before the solid material or cake is pressed out of the recipient by a piston.
C02F 1/469 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par des procédés électrochimiques par séparation électrochimique, p. ex. par électro-osmose, électrodialyse, électrophorèse
B01D 57/02 - Séparation, autre que la séparation de solides, non entièrement couverte par un seul groupe ou sous-classe, p. ex. par électrophorèse
C02F 11/12 - Traitement des boues d'égoutDispositifs à cet effet par déshydratation, séchage ou épaississement
The present invention relates to a composition, comprising (i) a polypropylene having a melt flow index MFI(230°C, 2.16 kg) of less than 2.0 g/10 min, a flexural modulus of from 1200 to 2400 MPa, a density of from 0.895 to 0.910 g/cm3, (ii) a high-density polyethylene, and (iii) an inorganic filler.
The present invention refers to a process to modify at least part of the surface of at least one mineral material, and to the use, as an additive in an aqueous suspension of mineral materials having a pH between 5 and 10, of at least one agent, wherein the additive allows for the formation of a low volume, high solids content filter or centrifuge cake on dewatering the suspension.
PROCESS TO PRESERVE AQUEOUS PREPARATIONS OF MINERAL MATERIALS, PRESERVED AQUEOUS PREPARATIONS OF MINERAL MATERIALS AND USE OF PRESERVATIVE COMPOUNDS IN AQUEOUS PREPARATIONS OF MINERAL MATERIALS
The present invention refers to a process for preserving an aqueous preparation of mineral material like e.g. calcium carbonate preparations, and to the use of a composition as a preservative in an aqueous preparation of mineral materials.
A01N 55/02 - Biocides, produits repoussant ou attirant les animaux nuisibles ou régulateurs de croissance des végétaux, contenant des composés organiques comportant des éléments autres que le carbone, l'hydrogène, les halogènes, l'oxygène, l'azote et le soufre contenant des atomes de métal
The present invention relates to the use of surface modified calcium carbonate as a filler in adhesives, sealants, and/or caulks, wherein the surface modified calcium carbonate is a mineral pigment product formed in situ by the double and/or multiple reaction between a calcium carbonate and the reaction product or products of the said carbonate with gaseous CO2 formed in situ and/or coming from an external supply, and the reaction product or products of the said carbonate with one or more moderately strong to strong H3O+ ion donors, and at least one aluminium silicate and/or at least one synthetic silica and/or at least one calcium silicate and/or at least one silicate of a monovalent salt and/or at least one aluminium hydroxide and/or at least one sodium and/or potassium aluminate. It further relates to method of producing adhesives, sealants, and/or caulks comprising surface modified calcium carbonate, as well as to the adhesives, sealants, and/or caulks obtained by this process.
The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH)2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH)2, based upon moles of Ca(OH)2 prior to or during carbonation; forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.5 to 5 % by dry weight of the precipitated calcium carbonate seeds, wherein the precipitated calcium carbonate seeds have a D50 that is less than the D50 of the precipitated calcium carbonate product and the precipitated calcium carbonate seeds have an aragonitic polymorph content greater than or equal to the precipitated calcium carbonate product.
FROTH FLOTATION PROCESS FOR THE SEPARATION OF SILICATES AND ALKALINE EARTH METAL CARBONATES USING A COLLECTOR COMPRISING AT LEAST ONE HYDROPHOBICALLY MODIFIED POLYALKYLENEIMINE
The invention refers to a process to separate silicates and alkaline earth metal carbonates implementing at least one hydrophobically modified polyalkyleneimine, wherein: i)the polyalkyleneimine is hydrophobically modified by replacement of all or part of the hydrogens of their primary and/or secondary amino groups by functional group R, where R comprises a linear or branched or cyclic alkyl and/or aryl group and contains 1 to 32 carbon atoms; ii)prior to modification, the polyalkyleneimine has at least 3 alkyleneimine repeat units and a molecular weight of between 140 and 100 000 g/mol; iii)modification of the polyalkyleneimine results in an increase in the atomic C amount, relative to the unmodified polyalkyleneimine, of between and 80 %. The invention additionally refers to a silicate-containingproduct and an alkaline 1 earth metal carbonate-containing product obtained by the process of the invention, and to their uses.
Use of at least one polyethylenimineas an additive in an aqueous suspension, containing from 25 to 62 vol. % of at least one calcium carbonate-comprising material, wherein the use provides improved stability with regard to the conductivity of the suspension.
Coating composition providing gloss and opacity on application, having a pigment volume concentration of from 5 % up to the critical pigment volume concentration and characterised in that comprises at least one ground natural calcium carbonate having a volume median diameter of between 0.05 and 0.3 μm, and at least one pigment having a refractive index of greater than or equal to 2.5.
Use of 2-((1-methylpropyl)amino)ethanol as an additive in an aqueous suspension, containing from 25 to 62 vol. % of at least one calcium carbonate-comprising material, wherein the use provides improved stability with regard to the conductivity of the suspension.
The invention relates to the use, during a step of dry grinding a mineral material, of formulations containing glycerol and/or polyglycerols, as an agent to improve the self-dispersing properties of said mineral material in an aqueous composition. The immediate viscosity of the final composition is thus reduced and kept stable over time. Furthermore, the amount of foam formed during the step of dispersal in the water is reduced.
This invention discloses a process for stabilising an aqueous mineral preparation comprising a step of adding at least one aldehyde-containing and/or aldehyde-releasing and/or phenolic and/or isothiazoline biocide to said aqueous mineral preparation.
A01N 31/08 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, contenant des composés organiques de l'oxygène ou du soufre l'atome d'oxygène ou de soufre étant lié directement à un système cyclique aromatique
A01N 33/08 - AminesComposés d'ammonium quaternaire contenant de l'oxygène ou du soufre
A01N 35/02 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, contenant des composés organiques comportant un atome de carbone possédant deux liaisons à des hétéro-atomes, avec au plus une liaison à un halogène, p. ex. un radical aldéhyde contenant des groupes aldéhyde ou cétone, ou leurs thio-analogues, liés aliphatiquementLeurs dérivés, p. ex. acétals
A01N 35/04 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, contenant des composés organiques comportant un atome de carbone possédant deux liaisons à des hétéro-atomes, avec au plus une liaison à un halogène, p. ex. un radical aldéhyde contenant des groupes aldéhyde ou cétone, ou leurs thio-analogues, liés directement à un système cyclique aromatique, p. ex. acétophénoneLeurs dérivés, p. ex. acétals
A01N 43/80 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, contenant des composés hétérocycliques comportant des cycles avec des atomes d'azote et des atomes d'oxygène ou de soufre, comme hétéro-atomes du cycle des cycles à cinq chaînons avec un atome d'azote et soit un atome d'oxygène, soit un atome de soufre, en positions 1,2
A01P 1/00 - DésinfectantsComposés antimicrobiens ou leurs mélanges
The present invention relates to a method for classifying mineral material, using a classification-assisting additive that contains glycerol and/or at least one polyglycerol and allows air classification effectiveness to be increased or uses less specific classification energy than additive-free air classification, while obtaining a classified mineral material that is compatible with use in an aqueous medium. The invention also relates to the use of the resulting product in paints, plastics, food and feed, pharmaceutical formulations, paper mass and paper coatings.
B02C 23/06 - Emploi d'additifs pour aider la désagrégation
B03B 1/04 - Traitement pour faciliter la séparation, en altérant les propriétés physiques du matériau à traiter par additifs
40.
USE OF AMPHIPHILIC POLYMERS AS AGENTS THAT IMPROVE THE THERMAL STABILITY AND THE UV RESISTANCE OF CHLORINATED AND FILLED THERMOPLASTIC MATERIALS, PROCESS FOR MANUFACTURING SAID MATERIALS
The present invention consists of the use, in a chlorinated and filled thermoplastic composition containing at least one chlorinated thermoplastic resin and at least one mineral filler, as an agent that improves the thermal stability and the UV resistance of said composition, of a linear amphiphilic copolymer characterized in that: it consists of at least one hydrophilic monomer and of at least one hydrophobic monomer, it has a weight-average molecular weight between 5000 g/mol and 20 000 g/mol and a polydispersity index of less than or equal to 3, and preferably a weight-average molecular weight between 10 000 g/mol and 15 000 g/mol and a polydispersity index of less than or equal to 2.5. It also relates to a process for manufacturing a chlorinated and filled thermoplastic composition using said copolymer, and also to the composition obtained directly by said process.
C08L 27/04 - Compositions contenant des homopolymères ou des copolymères de composés possédant un ou plusieurs radicaux aliphatiques non saturés, chacun ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un halogèneCompositions contenant des dérivés de tels polymères non modifiées par un post-traitement chimique contenant des atomes de chlore
C08L 33/00 - Compositions contenant des homopolymères ou des copolymères de composés possédant un ou plusieurs radicaux aliphatiques non saturés, chacun ne contenant qu'une seule liaison double carbone-carbone et un seul étant terminé par un seul radical carboxyle, ou ses sels, anhydrides, esters, amides, imides ou nitrilesCompositions contenant des dérivés de tels polymères
The present invention relates to a composition for beta-nucleation of polypropylene, comprising: (a) a particulate mineral solid support, comprising a compound of a IUPAC Group 2 metal, and (b)on the surface of the particulate solid support (b1) a salt of a dicarboxylic acid, wherein the dicarboxylic acid has from 7 to 10 carbon atoms, and (b2)a dispersing and/or grinding agent.
The present invention relates to a process for preparing hydromagnesite in an aqueous environment. The invention further relates to such hydromagnesite having a specific platy-like morphology in combination with a specific average particle size and to their use as minerals, fillers and pigments in the paper, paint, rubber and plastics industries and to the use as flame-retardant.
A concrete mix useful for producing concrete products having anti-efflorescence properties and a method for making such concrete products are provided. The concrete mix includes a hydraulic cement binder, aggregates and as an additive an ultrafine particulate material including carrier particles being surface treated with an efflorescence control agent. The method for making concrete includes a first step of mixing the hydraulic cement binder, aggregates, water and the ultrafine particulate material, a second step of pouring the mixture so obtained into a form, and a third step of curing the mixture.
The present invention relates to an aqueous slurry comprising natural ground calcium carbonate which has a percentage P5 by weight of particles having a diameter of less than 5.0 μm of from 98.5 % to 90 %, a percentage P2 by weight of particles having a diameter of less than 2.0 μm of from 96 % to 80%, wherein the ratio of P2/P5 is from 0.98 to 0.85, and wherein the slurry has a solids content of more than 78 wt%.
Use of 2-amino-2-methyl-l-propanol (AMP) as an additive in an aqueous suspension, containing from 25 to 62 vol. % of at least one calcium carbonate-comprising material and having a pH of between 8.5 and 11, to increase the suspension pH by at least 0.3 pH units, the AMP being added to said suspension in an amount of from 500 to 15000 mg per litre of the aqueous phase of the suspension, wherein the suspension conductivity change is maintained to within 100 μS/cm/pH unit.
The present invention relates to a process for preparing an aqueous suspension of dispersed calcium carbonate, wherein the resulting coating of said suspension provides opaque properties or has a specific light scattering coefficient S. The invention further relates to compositions of such suspensions of dispersed calcium carbonate and to its use in the field of paper coatings and paper mass fillings as well as paints and plastic coatings.
The invention relates to a specific fluid for energy conversion, characterized in that it includes water, a high-diffusion mineral powder, generally calcium carbonate, an antifreeze agent and/or a dye, a surfactant and an antifoaming agent, the powder having a mass concentration of between 1 and 3 % and a median particle size of between 0.8 and 10 μm.
The present invention relates to the field of processing thermoplastic polymers, particularly the present invention relates to a process for manufacturing compacted material suitable for the use in thermoplastic polymers without a compounding step, comprising the steps of a) providing at least one primary powder material; b) providing at least one molten surface treatment polymer; c) simultaneously or subsequently feeding the at least one primary powder material and the at least one molten surface treatment polymer into the high speed mixer unit of a cylindrical treatment chamber; d) mixing the at least one primary powder material and the at least one molten surface treatment polymer in the high speed mixer, e) transferring the mixed material obtained from step d) to a cooling unit, as well as the compacted material obtained by this process and its use in thermoplastic polymers.
The present application relates to a process for preparing a surface-reacted calcium carbonate in an aqueous environment. The process according to the present invention aims at avoiding the mandatory implementation of medium-strong to strong acids. Another aspect of the present invention is directed to an aqueous suspension of surface-reacted calcium carbonate which is obtainable by the inventive process.
The present invention relates to an economic process for preparing surface-reacted calcium carbonate. The present invention further relates to a surface-reacted calcium carbonate having an increased specific BET surface area, and the use of a process for adjusting the specific BET surface area.
A method for manufacturing fine mineral powders using systems that include one or more air classifiers, dust separators like cyclones and/or filters, at least one ventilator and instruments connecting tubes or pipes for the transport of air. The relative humidity of air in the air classifier is kept in a range between 15% to 35%.
B02C 23/00 - Procédés auxiliaires, dispositifs auxiliaires ou accessoires spécialement adaptés au broyage ou à la désagrégation non prévus dans les groupes ou non adaptés spécialement aux appareillages couverts par un seul des groupes
52.
PARTICULATE MATERIAL FOR CONTROLLED RELEASE OF ACTIVE INGREDIENTS
The invention relates to a particulate material for controlled release of active ingredients, the particulate material comprising a combination of one or more active ingredients, excluding nicotine, and an inorganic mineral filler, wherein the active ingredient is reversibly absorbed into and/or adsorbed onto the inorganic mineral filler, and wherein the BET specific surface area of the inorganic mineral filler is above 15 m2/g, the BET specific surface area measured in accordance with ISO 9277. The invention is particularly advantageous for controlled release of active ingredients.
The present invention relates to a process for the production of nano-fibrillar cellulose gels by providing cellulose fibres and at least one filler and/or pigment; combining the cellulose fibres and the at least one filler and/or pigment; and fibrillating the cellulose fibres in the presence of the at least one filler and/or pigment until a gel is formed, as well as the nano-fibrillar cellulose gel obtained by this process and uses thereof.
D21C 9/00 - Post-traitement de la pâte de cellulose, p. ex. de la pâte de bois, ou des linters de coton
D01F 2/02 - Filaments, ou similaires, artificiels, à un seul composant, formés de cellulose ou de dérivés de la celluloseLeur fabrication obtenus à partir de solutions de cellulose dans des acides, des bases ou des sels
C08J 5/00 - Fabrication d'objets ou de matériaux façonnés contenant des substances macromoléculaires
54.
PROCESS FOR THE PRODUCTION OF NANO-FIBRILLAR CELLULOSE SUSPENSIONS
The present invention relates to a process for the production of suspensions of nano- fibrillar cellulose by providing cellulose fibres and at least one filler and/or pigment; combining the cellulose fibres and the at least one filler and/or pigment; and fibrillating the cellulose fibres in the presence of at least one filler and/or pigment, as well as the suspensions of nano-fibrillar cellulose obtained by this process and their uses.
D21B 1/16 - Désintégration par meules ou disques en présence d'agents chimiques
D21C 9/00 - Post-traitement de la pâte de cellulose, p. ex. de la pâte de bois, ou des linters de coton
D21D 1/00 - Méthodes de raffinage à pile ou de raffinage modernePiles du type Hollander
D21H 11/00 - Pâte ou papier comprenant des fibres de cellulose ou de lignocellulose uniquement d'origine naturelle
D21H 11/18 - Fibres hautement hydratées, gonflées ou aptes à être fibrillées
55.
PROCESS TO PREPARE SELF-BINDING PIGMENT PARTICLES IMPLEMENTING ACRYLIC COMB COPOLYMERS WITH HYDROPHOBIC GROUPS AS COUPLING AGENTS, SELF BINDING PIGMENT PARTICLES AND USES THEREOF
The present invention relates to a process to prepare self-binding pigment particles comprising at least one step a) of grinding one or more binders and one or more mineral materials in an aqueous environment to obtain a suspension, characterised in that, prior to and/or during step a), a copolymer is added in the form of an aqueous solution, said copolymer resulting from the polymerisation of: 2.1) at least one anionic monomer that is an alkene; 2.2) at least one oxyalkylated monomer that is an alkene, wherein the oxyalkyl group has a terminal hydrophobic alkyl, aryl, alkyl aryl or aryl alkyl group having 10 to 32 carbon atoms; 2.3) optionally, at least one other monomer that is an acrylic ester, a preferred acrylic ester being ethyl acrylate, and/or an unsaturated amide, a preferred unsaturated amide being acrylamide, as well as to the products obtained by this process, and uses of these products.
The present invention relates to a method for separating mineral impurities from calcium carbonate-containing rocks by comminuting the calcium carbonate-containing rocks to a particle size in the range of from 1 mm to 250 mm, separating the calcium carbonate particles by means of a dual energy X-ray transmission sorting device.
The invention relates to a process for manufacturing aqueous mineral material suspensions or dried mineral materials using at least one lithium ion neutralised water-soluble organic polymer, the ground mineral materials obtained by this process, the use of the mineral materials in paper, paints and plastics, as well as the use of the lithium ion neutralised water-soluble organic polymer in the manufacturing process as a dispersing and/or grinding enhancer.
C09C 1/02 - Composés du magnésium ou des métaux alcalino-terreux
C09C 3/04 - Traitement physique, p. ex. broyage, traitement par des vibrations ultrasoniques
D21H 17/00 - Matériaux non fibreux ajoutés à la pâte caractérisés par leur constitutionMatériaux d'imprégnation du papier caractérisés par leur constitution
The invention relates to a process for manufacturing calcium carbonate materials having a particle surface with improved adsorption properties of dispersant, using at least one lithium ion-containing compound, the calcium carbonate material obtained by this process, the use of the calcium carbonate materials in paper, paints and plastics, as well as the use of the lithium ion-containing compounds in the manufacturing process.
C09C 1/02 - Composés du magnésium ou des métaux alcalino-terreux
C09C 3/04 - Traitement physique, p. ex. broyage, traitement par des vibrations ultrasoniques
D21H 17/00 - Matériaux non fibreux ajoutés à la pâte caractérisés par leur constitutionMatériaux d'imprégnation du papier caractérisés par leur constitution
The present invention relates to carriers for the controlled release of active agents, comprising surface reacted natural or synthetic calcium carbonate, one or more active agents, wherein said one or more active agent is associated with said surface- reacted calcium carbonate, and wherein said surface-reacted natural or synthetic calcium carbonate is a reaction product of natural or synthetic calcium carbonate with carbon dioxide and one or more acids, wherein the carbon dioxide is formed in situ by the acid treatment and/or is supplied from an external source. It further relates to the preparation of loaded carriers, as well as their use in different applications.
The present invention relates to mixtures of two distinct porous, stable aggregates and rather coarse PCCs (precipitated) calcium carbonate pigments (such as a composition comprising a blend or mix of one of the two Grade B or Grade C PCCs, in combination with a second, specific S-PCC (S = scalenohedral type PCC) pigment in a ratio appropriately selected between 90/10 and 10/90 percent by dry weight, namely 80/20 and 20/80, with a coarser, third component, which may be a pigment and/or a filler such as natural calcium (ground) carbonate or (most preferably) a PCC (precipitated calcium carbonate), depending on the granulometry of the two fine PCCs the third, coarser component, may be omitted. The main criteria for selecting the said "coarser" pigment is that it should feature a granulometry which does no affect noticeably, when in admixture with the blend PCC Grade B (or PCC Grade C) with S-PCC the finest part of the granulometry data of the blend, and in particular that it should not contribute anything significant to the amount of particles < 0.2 μm, preferably nothing < 0.3 μm, more preferably nothing < 0.5 μm and most preferably nothing < 1 μm.
D21H 17/67 - Composés insolubles dans l'eau, p. ex. charges ou pigments
D21H 19/38 - Couches contenant des pigments caractérisées par les pigments
B41M 5/50 - Feuilles d'enregistrement caractérisées par les revêtements utilisés pour améliorer la réceptivité aux encres, aux colorants ou aux pigments, p. ex. pour jet d'encre ou pour l'enregistrement par transfert thermique de colorants
The present invention relates to a process for stabilizing aqueous preparations of minerals by adding reuterin to the aqueous preparations, to the use of reuterin for the stabilization of such aqueous mineral preparations, and the aqueous mineral preparations containing reuterin.
The present invention relates to treated mineral filler products comprising a) at least one mineral filler, b) a treatment layer located on the surface of said mineral filler(s), said treatment layer comprising at least one saturated C8 to C24 aliphatic carboxylic acid; and at least one di and/or trivalent cation salt of one or more saturated C8 to C24 aliphatic carboxylic acid, wherein the weight ratio of all of said aliphatic carboxylic acid salt(s) : all of said aliphatic carboxylic acid(s) is from 51 :49 to 75:25; and said treatment layer is present in an amount of at least 2.5 mg/m2 of said mineral filler. Furthermore the present invention relates to processes to prepare such treated mineral filler products, and to their uses, notably in plastic applications, and especially in polypropylene (PP)- or polyethylene (PE)-based breathable or extrusion coating film applications.
Process to prepare a precipitated calcium carbonate (PCC) comprising the following steps: (i) providing CaO, which is optionally partially or fully slaked (hereafter "calcium source"); (ϋ) providing a CO2-comprising gas; (ϋi) contacting said calcium source of step (i) and said CO2-comprising gas of step (ii) in an aqueous environment in a reactor, in one or more steps; (iv) obtaining a PCC-comprising suspension; (v) optionally concentrating said PCC-comprising suspension of step (iv); (vi) optionally adding dispersing additives to the suspension of step (iv) and/or (v); (vii) optionally grinding the product of step iv, v or vi.
The object of the invention consists of a process for the manufacture of aqueous suspensions of calcium carbonate using an acrylic polymer with an average by weight molecular weight of between 8,000 g/mole and 15,000 g/mole and a molar content of less than 20% of polymeric chains of molecular weight less than 3,000 g/mole. It also concerns the aqueous suspensions obtained, possibly dried, and their uses in the paper, paint, plastics and mastics industry.
The present invention relates to the use of at least one nucleic acid comprising or consisting of: (i) CATCGATGAAGAACGCWGCRAAHTGCGATAMGTARTGYGAATTGCAGRATTCAGTGARTCATCGAAWYTTTGAACGCAYMTTGCRC (SEQ ID NO: 1), wherein: R represents A or G Y represents C or T M represents A or C W represents A or T H represents A or C or T (ii) a portion of SEQ ID NO: 1, provided said nucleic acid binds under stringent conditions to a nucleic acid comprising or consisting of the complementary sequence of SEQ ID NO: 1, or (iii) complementary sequences of (i) and (ii); for the detection of nucleic acids from one or more fungi in a sample.
C12Q 1/68 - Procédés de mesure ou de test faisant intervenir des enzymes, des acides nucléiques ou des micro-organismesCompositions à cet effetProcédés pour préparer ces compositions faisant intervenir des acides nucléiques
66.
ALKALINE EARTH CARBONATE CONTAINING MINERAL FOR SURFACE CLEANING
The present invention relates to a dry blasting process for the cleaning of solid surfaces as well as special abrasive pigments suitable therefor and a method for their production.
The present invention refers to a process for bacterial stabilizing aqueous preparations like e.g. calcium carbonate slurries and a composition which can be used for the biocidal treatment of such aqueous preparations.
A01N 35/02 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, contenant des composés organiques comportant un atome de carbone possédant deux liaisons à des hétéro-atomes, avec au plus une liaison à un halogène, p. ex. un radical aldéhyde contenant des groupes aldéhyde ou cétone, ou leurs thio-analogues, liés aliphatiquementLeurs dérivés, p. ex. acétals
A01N 37/04 - Acides carboxyliques saturés ou leurs thio-analoguesLeurs dérivés polybasiques
A01N 43/80 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, contenant des composés hétérocycliques comportant des cycles avec des atomes d'azote et des atomes d'oxygène ou de soufre, comme hétéro-atomes du cycle des cycles à cinq chaînons avec un atome d'azote et soit un atome d'oxygène, soit un atome de soufre, en positions 1,2
A01N 59/00 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, contenant des éléments ou des composés inorganiques
A01P 1/00 - DésinfectantsComposés antimicrobiens ou leurs mélanges
68.
METHOD FOR THE MANUFACTURE OF A COATING SLIP WITH USE OF AN ACRYLIC THICKENER COMPRISING A BRANCHED HYDROPHOBIC CHAIN, AND SLIP OBTAINED
The invention comprises a method for the manufacture of a paper-coating slip containing an inorganic material, with the use, as thickener for said slip, of a water-soluble polymer comprising at least one ethylenically unsaturated anionic monomer, and at least one ethylenically unsaturated oxyalkylated monomer terminated with a saturated or unsaturated, branched hydrophobic alkyl, alkylaryl, arylalkyl or aryl chain containing from 14 to 21 carbon atoms and having 2 branches containing at least 6 carbon atoms. Said polymer is introduced into the slip directly, or using a prior step of milling, dispersing or concentrating the inorganic material in water, possibly followed by a drying step. The water retention of said slip is thus improved, thereby contributing to better printability of the paper coated with said slip.
D21H 19/56 - Composés organiques macromoléculaires ou leurs oligomères obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
69.
SURFACE-REACTED PRECIPITATED CALCIUM CARBONATE, PROCESS TO MAKE SAME, AND USES THEREOF
The present invention relates to a process for the preparation of a pigment comprising a surface-reacted precipitated calcium carbonate (PCC), the process comprising the steps of a) providing at least one precipitated calcium carbonate (PCC)-comprising pigment; b) providing H3O+ ions; c) providing at least one anion being capable of forming water-insoluble calcium salts, said anion being solubilised in an aqueous medium; d) contacting said PCC-comprising pigment, with said H3O+ ions and with said solubilised anions in an aqueous medium to form a slurry of surface-reacted PCC-comprising pigment, wherein said surface-reacted PCC comprises an insoluble, at least partially crystalline calcium salt of said anion formed on the surface of the PCC; wherein excess solubilised calcium ions are provided during step d). The present invention further relates to a slurry of surface-reacted PCC comprising pigment obtained by this process, its use as well as the surface-reacted PCC contained in the slurry.
The present invention relates to surface-mineralized organic fibers comprising organic fibers having a length in the millimeter range, the surface of which is at least partially coated with finely divided alkaline earth carbonate nanoparticles by means of binders based on copolymers comprising as monomers one or more dicarboxylic acids and one or more monomers from the group of diamines, triamines, dialkanolamines or trialkanolamines and epichlorohydrin, a method for producing such surface-mineralized organic fibers, aqueous slurries thereof, their use in papermaking, in surface finishing of paper, plastic, cement and clay surfaces, in paints and varnishes and the use of the inventive binders for coating the organic fibers with nano alkaline earth carbonates.
D21H 17/67 - Composés insolubles dans l'eau, p. ex. charges ou pigments
D21H 17/69 - Composés insolubles dans l'eau, p. ex. charges ou pigments modifiés, p. ex. par association avec d'autres compositions préalablement à l'incorporation dans la pâte ou le papier
D21H 19/38 - Couches contenant des pigments caractérisées par les pigments
D21H 19/44 - Couches contenant des pigments caractérisées par les autres ingrédients, p. ex. par le liant ou l'agent dispersant
D21H 19/62 - Composés organiques macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone
The present invention relates to composites comprising inorganic micro pigments and/or fillers in the form of surface-phosphated microparticles, whose surface is at least partially coated with finely divided with alkaline earth carbonate nanoparticles by means of binders based on copolymers comprising as the monomers one or more dicarboxylic acids and one or more monomers from the group of diamines, triamines, dialkanolamines or trialkanolamines and epichlorohydrin, a method for producing such composites, aqueous slurries thereof and the use thereof in papermaking or in the field of production of paints and plastics as well as the use of the binders for the coating of microparticles with nano alkaline earth carbonate.
C08K 9/08 - Ingrédients agglomérés par traitement avec un liant
C09C 3/00 - Traitement, en général, de substances inorganiques, autres que des charges fibreuses, pour améliorer leurs propriétés de pigmentation ou de charge
C09C 3/06 - Traitement par des composés inorganiques
D21H 19/38 - Couches contenant des pigments caractérisées par les pigments
D21H 19/44 - Couches contenant des pigments caractérisées par les autres ingrédients, p. ex. par le liant ou l'agent dispersant
72.
SURFACE-REACTED CALCIUM CARBONATE IN COMBINATION WITH HYDROPHOBIC ADSORBENT FOR WATER TREATMENT
The present invention relates to a process for reducing the amount of organic components in water, wherein a surface-reacted naturalcalcium carbonate and a hydrophobic adsorbent, selected from the group consisting of talc, hydrophobised calcium carbonate, hydrophobised bentonite, hydrophobised kaolinite, hydrophobised glass, or any mixture thereof, are brought into contact with the water to be purified, the surface-reacted natural calcium carbonate being the reaction product of a naturalcalcium carbonate with an acid and carbon dioxide, which is formed in situ by the acid treatment and/or supplied externally, and the surface-reacted natural calcium carbonate being prepared as an aqueous suspension having a pH of greater than 6.0, measured at 20°C.
The invention relates to a method for preparing self-binding pigment particles either dry or in an aqueous suspension or dispersion that comprises, in a particular step of the method, a reverse emulsion comprising a dispersion of water particles in an oily phase and at least one polymer including acrylamide with an acrylic monomer.
The present invention relates to a process of preparing precipitated calcium carbonate (PCC) in a low energy intensity reactor in such a manner that the amount of solids in the PCC product can be raised to 35% or more without performing a dewatering step. The process comprises performing in parallel and in two or more separate reaction vessel the steps of contacting calcium hydroxide with a gas comprising carbon dioxide to allow formation of calcium carbonate, and adding calcium oxide, lime or dry calcium hydroxide or a combination of any of the three to a part of the resulting mixture of calcium hydroxide and calcium carbonate. The invention further provides a specialized reactor system as well as the use of this reactor system in the manufacture of PCC.
The present invention relates to the domain of mineral filler treatment processes. The process for the preparation of a treated mineral filler product comprises the following steps: (a) treating at least one dry mineral filler with at least one Group II or Group III salt of a C8 to C24 aliphatic monocarboxylic acid to produce an intermediate mineral filler product; followed by (b) treating the intermediate mineral filler product of step (a) with at least one C8 to C24 aliphatic monocarboxylic acid to produce a treated mineral filler product. Applications in particular to prepare treated mineral filler products (such as Ca carbonate) to be used in plastic applications such as in polypropylene (PP) - or polyethylene (PE) - based breathable or extrusion coating film applications.
The present invention relates to the removal of endocrine disrupting compounds from an aqueous medium by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20 °C, to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids, the use of the surface-reacted natural calcium carbonate for the removal of endocrine disrupting compounds, as well as to a combination of a surface-reacted natural calcium carbonate and activated carbon for the removal of endocrine disrupting compounds.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
C09C 1/02 - Composés du magnésium ou des métaux alcalino-terreux
The present invention relates to a process for the purification of water by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20 °C, to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids and the use of the surface-reacted natural calcium carbonate for this process.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
C02F 103/28 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant du traitement de plantes ou de parties de celles-ci provenant de l'industrie du papier ou de la cellulose
C02F 103/32 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de l'industrie alimentaire, p. ex. eaux résiduaires de brasseries
The present invention relates to a process for the control of pitch in an aqueous medium by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20 °C, to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids, the use of the surface-reacted natural calcium carbonate for pitch control, as well as to a combination of a surface-reacted natural calcium carbonate and talc for pitch control, and the resulting composites.
The present invention relates to a process for the purification of water, wherein a surface-reacted natural calcium carbonate is brought into contact with the water to be purified, the surface-reacted natural calcium carbonate being the reaction product of a natural calcium carbonate with an acid and carbon dioxide, which is formed in situ by the acid treatment and/or supplied externally.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
C02F 103/28 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant du traitement de plantes ou de parties de celles-ci provenant de l'industrie du papier ou de la cellulose
C02F 103/32 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de l'industrie alimentaire, p. ex. eaux résiduaires de brasseries
80.
METHOD FOR DRY-GRINDING ONE OR MORE MINERAL MATERIALS CONSISTING OF AT LEAST ONE CALCIUM CARBONATE
The present invention relates to a method for dry-grinding one or more mineral materials that include at least one calcium carbonate, characterized in that said method comprises the following steps: a) crushing the mineral material or materials in at least one crushing unit until a crushed material with a d95 of less than 10 cm is obtained; b) possibly improving the crushed material according to step a); c) dry-grinding the crushed material according to step a) and/or b) in at least one grinding unit, (i) in the presence of at least one hydrophilic comb polymer containing at least one polyalkylene oxide function grafted onto at least one ethylenically unsaturated monomer, (ii) in such a way that the quantity of liquid in said grinding unit is less than 15% by dry weight of said crushed material in said grinding unit; d) possibly classifying the dry-ground material according to step c) with at least one classification unit; e) possibly repeating step(s) c) and/or d) on all or part of the dry-ground material resulting from step(s) c) and/or d); and characterized in that the material collected after step c) and/or d) and/or e) has a d50 (average diameter) of 0.5 to 500 microns.
The invention concerns a process for purification of calcium carbonate-comprising minerals comprising at least one flotation step, characterised in that this step implements at least one quaternary imidazoline methosulfate compound as collector agent.
The present invention relates to a method for processing crude bentonite, process bentonite obtainable by the method according to the present invention, use of this bentonite in papermaking and/or finishing, in particular, as a filler, coating pigment, retention agent or rheological additive, as a pitch control agent, for the control of sticky deposits in the paper machine or to mask and/or reduce the residual chemicals in pigments.
brevets
