Coatings with pigments (D21H19/36)

Cover composition, method of coating cover, coated substrate, packaging material and packaging for liquid // 2627404
FIELD: chemistry.SUBSTANCE: surfactant is a water-soluble non-ionic ethoxylated alcohol of the formula RO(CH2CH2O)xH, wherein R is iso-C13H27 and x is 8 or R is iso-C10 and x is 5 or 7. The solids content in the composition is from 4 to 20 wt %. A method for applying a gas impermeable layer to a substrate using a coating composition and a coated substrate having at least one gas impermeable layer obtained by applying a coating composition to the substrate is also described. In addition, the present invention relates to a packaging material comprising a coated cardboard on which a coating composition is applied and a liquid package containing such a packaging material.EFFECT: ensuring the stability of the coating applied by the irrigation at a value of dynamic surface tension up to 50 mN M and ensuring faultless operation at very low flow rates, high quality protection combined with an acceptable small number of point defects.14 cl, 8 dwg, 1 tbl
Paper-base for decorative coating material // 2623260
FIELD: textile, paper.SUBSTANCE: paper-base has a surface coating on the original paper, which contains an alkaline earth metal salt. The coating contains, at least, 5 wt % of a polymeric binder. Also, the coating contains an inorganic pigment having a specific surface area of 100-400 cm2/g measured by the BET method.EFFECT: invention provides a paper-base having a good ability to be subjected to printing by the ink jet printing method.13 cl, 1 tbl, 6 ex

Ultra-smooth sheet material for overprinting, suitable for recycling, and method of its manufacturing // 2538581
FIELD: printing.SUBSTANCE: invention relates to a method of manufacturing a smooth or ultra-smooth sheet material for overprinting. It comprises the following steps: manufacturing a multilayer structure consisting of a lower layer of plastic film, an intermediate anti-adhesive layer, and also an outer layer for overprinting, gluing one side of the substrate or the upper side of the layer for overprinting, placement of the substrate on the layer for overprinting with their laminating followed by removal of the plastic film from the layer for overprinting, and this layer for overprinting forms on the sheet of smooth or ultra-smooth side.EFFECT: invention provides creation of an ultra-smooth sheet material suitable for overprinting and suitable for complete recycling, when possible.25 cl, 6 dwg, 8 ex

ethod of improvement opacity // 2527219
FIELD: textiles, paper.SUBSTANCE: invention can be used in the manufacture of paper, varnishes and paints. The method of preparing the aqueous suspension of particulate calcium carbonate comprises providing an aqueous suspension of particulate calcium carbonate comprising at least one dispersing agent, and providing at least one alkali metal carbonate and/or alkali metal acid carbonate, where the alkali metal ion is selected from potassium and/or sodium. The solid matter content in the said suspension is 65-80 wt % relative to the total weight of the aqueous suspension. The said aqueous suspension of particulate calcium carbonate is diluted with water. Before and/or during and/or after dilution with water, the said aqueous suspension of particulate calcium carbonate is brought into contact with the said at least one alkali metal carbonate and/or alkali metal acid carbonate. At that the suspension of dispersed calcium carbonate after the stage of contacting has the pH value from 7.5 to 12.EFFECT: invention enables to increase the light scattering coefficient S and opacity of the coatings obtained from the suspension of calcium carbonate.16 cl, 2 ex

Cardboard with low bulk density // 2490387
FIELD: textiles, paper.SUBSTANCE: cardboard comprises solid cardboard substrate of bleached sulphate pulp (BSP) and a coating applied to the cardboard substrate to form a coated structure. The said coated structure has a surface density, thickness of the sheet and the Parker surface smoothness. The Parker surface smoothness is at most about 3 microns, and the surface density is at most about Y2 or Y3 or Y4 pound/3000 foot2, where Y2, Y3 and Y4 are functions of the said thickness (X) of the sheet in points which are calculated using the equation: Y2=3.71+13.14X-0.1602X2 or Y3=3.63+12.85X-0.1566X2, or Y4=3.50+12.41X-0.1513X2.EFFECT: invention provides a coated cardboard with increased smoothness with the required parameters of thickness and the surface density to ensure high-quality printing.13 cl, 10 dwg, 1 tbl, 6 ex
Pigment composition // 2461595
FIELD: chemistry.SUBSTANCE: water-based pigment composition contains polyalkylene glycol, having average molecular weight Mw from approximately 5000 to approximately 75000, and inorganic pigment particles containing colloidal particles based on silicon oxide or silicate or aggregates thereof. The amount of polyalkylene glycol ranges from 50 to 100 wt % with respect to the total amount of organic material in the composition, and the weight ratio of said colloidal particles to the organic material ranges from 1:3 to 30:1.EFFECT: invention also relates to a method of producing said composition, use thereof to coat paper or cardboard, a method of obtaining coated paper or cardboard.25 cl, 2 tbl, 4 ex

ethod of substrate processing // 2436882
FIELD: paper industry.SUBSTANCE: paper product comprises a substrate selected from paper or cardboard, and a coating on the substrate with voids in it. The coating on the substrate comprises a water soluble polymer. The water-soluble polymer is selected from a group consisting of starch, waxy corn starch, protein, polyvinyl alcohol, casein, gelatin, soybean protein, and alginates. The coating additionally comprises a crosslinking agent. The paper product is substantially free of an elastomeric material. A method of processing a substrate for the paper product comprises coating an aqueous solution of the polymer on the film substrate, fixation of an aqueous solution of the polymer by contacting of the aqueous solution of the polymer with a heated surface up to formation of voids in the film. The phase of fixation comprises at least a partial drying of aqueous polymer solution.EFFECT: obtained paper product is characterised with improved smoothness with no increase in density and has excellent printability.27 cl, 3 ex, 1 tbl, 17 dwg
Paper base to make materials for formation of decorative coating // 2422574
FIELD: textile, paper.SUBSTANCE: paper base is designed to form a decorative material of a coating. It represents a non-processed paper containing a white pigment and/or fillers and is coated with a covering solution, containing at least one water-soluble modified starch with special distribution of molecules according to molecular weight. Also a decorative paper or decorative material is proposed to form coatings with application of the above-specified paper-base.EFFECT: improved quality of a finished product due to increased inner strength of fixation with high non-transparency and other mechanical properties, improved stability of paper size stability and increased average size of its pores.7 cl, 2 tbl, 6 ex
Wallpapers with bactericide properties // 2417281
FIELD: construction.SUBSTANCE: wallpapers have a base and a face and a reverse sides. A coating that contains an antibacterial agent is applied onto the face side of the base. The coating antibacterial agent is represented by silver nanoparticles. The coating is produced by mixing of a varnish and a carbon porous carrier with silver nanoparticles in specified amount. Silver nanoparticles size is 2-50 nm. The carbon porous carrier has specific density of 0.03-0.1 g/cm3, specific surface of 50-200 m2/g and pore size of 5-50 nm. The varnish is a water-based acrylic varnish or an alkyd varnish. The wallpaper base is made of paper or cloth. The face surface of wallpapers is made of paper, cloth, fabric fibres or polyvinyl chloride. The carbon porous carrier with silver nanoparticles is in powder form. Glue is applied onto the reserves side of wallpapers.EFFECT: higher quality of wallpapers and simplified technology of their manufacturing.14 cl

Improved method for production of paper and cardboard production // 2401900
FIELD: textile, paper.SUBSTANCE: method includes formation of composition, containing water, raw starch and powder optical refining agent. Boiling of composition. Application of finished composition, at least on one surface of paper or cardboard base in coating press. Then base is dried. In another version of method composition is boiled at the temperature up to 299°F inclusive.EFFECT: improved brightness of paper and cardboard.7 cl, 4 dwg, 8 tbl, 1 ex

Universal chalk overlay paper for printing // 2377353
FIELD: fabrics, paper.SUBSTANCE: invention is related to glossy chalk overlay universal paper for printing, which may be used in wide range of office equipment for printing, including jet and electrophotographic printing, to method of chalk overlay paper making. Chalk overlay paper contains paper web and pigment composition applied onto at least one surface of web. Specified composition of pigment coat comprises the first pigment with specific surface BET in the range from approximately 50 to 750 m2/g; the second pigment with specific surface BET in the range of approximately from 5 to 49 m2/g; and polymer binder. Besides specified chalk overlay paper has glossiness of coat equal to or more than approximately 30% at the angle of 75° and length of absorption Bristow less than approximately 180 mm.EFFECT: paper has superb properties of ink absorption, toner fixation and provides for obtaining the imprint of high quality.10 cl, 3 dwg, 15 tbl, 8 ex
ethod for production of coated paper // 2346098
FIELD: textile fabrics, paper.SUBSTANCE: method is related to production of coated paper or cardboard. Method includes application of pigment composition as coating on at least one side of paper or cardboard web. Specified pigment composition is water dispersion, which includes optionally aggregated colloidal particles of silicon dioxide or aluminium silicate as pigment particles, which are prepared from alkali metal silicate by ion exchange or pH reduction and having surface area of approximately from 30 m2/g to approximately 450 m2/g. Coating contains also at least one cationic component selected from group that consists of water-soluble aluminium salts and cationic polymers with molecular weight from approximately 2,000 to approximately 1,000,000 and charge density from approximately 0.2 mEq/g to approximately 12 mEq/g, in which at least approximately 0.4 g of pigment particles from pigment composition is applied on m2 of coated side of paper or cardboard web. Invention is also related to paper or cardboard produced by this method. It is also related to composition of above mentioned pigment in the form of water dispersion, which includes less than approximately 3 wt % of organic binders and to method of above mentioned pigment composition production, in which mixing is done to produce water dispersion in order to avoid gel formation and deposition.EFFECT: improvement of printing and strength properties of coating, and also lower scuffing of paper.26 cl, 5 tbl, 4 ex

Decorative paper, containing electrically charged fibres // 2337836
FIELD: textiles, paper.SUBSTANCE: wear proof particles are treated with adhesion promoter based on silane or sylon and then deposited on paper, impregnated with resin, thereby obtaining coating. Fibre is electrically charged and put onto the coating. Drying is then carried out. The device for implementing the given method has a equipment for depositing wear proof particles on paper, equipment for charging fibre and putting the charged fibre onto the paper. The latter consists of a roller with depressions, made with provision for rotating, and a brush mounted near the roller for cleaning the depressions. The device also has apparatus for electrically charging the roller and/or the brush and the roller, which is made with provision for rotation and passing paper sheets under the roller with depressions. Paper, made using this technique, has a wear proof coating and electrically charged fibres on the wear proof coating. The charged fibres used can be made from polyester and/or cotton, and/or cotton linter.EFFECT: obtaining wear proof paper with improved properties.14 cl, 3 dwg
Thermal transfer paper for printing with sublimation ink // 2335405
FIELD: technological processes.SUBSTANCE: this paper for printing consists of base and coating applied on it, which contains binding agent and filler. At that components are contained with preset proportion. As binding agent coating contains substance selected from the group that includes starch, carboxymethylcellulose, polyvinyl alcohol, gelatine and their mixtures. As filler coating contains substance selected from the group that includes calcium sulfoaluminate, fine-grained starch, talc, silica gels and their mixture. Mass of coating on paper base amounts to 10-25 g/m2. Possibility occurs to use thermal transfer paper in production of different items with firmly printed colour images, both with application of jet printing method and typography printing methods.EFFECT: provision of high rate of ink drying and images printed with them on paper in the complete range of ink densities.4 cl, 3 tbl, 3 ex
ethod for manufacture of ink-jet printing paper with pigment coat and ink-jet printing paper with pigment coat // 2306375
FIELD: production of ink-jet printing paper with special pigment coat applied thereto.SUBSTANCE: method involves manufacturing paper-base; applying onto one side of paper-base ink-perceptive coat consisting of pigment, binder and cationic fixative; applying onto opposite side of paper-base curling-preventive coat; refining both surfaces of paper; using mixture of amorphous silicon dioxide and calcium or kaolin carbonate as ink perceptive pigment for coat, said mixture having specific outer surface less than 20 m2/g in the ratio of (75-45):(25-55); using polyvinyl alcohol as binder in an amount of 20-25% by weight of pigment; using polydiallyl dimethylammonium chloride as cationic fixative.EFFECT: improved printing characteristics and increased paper surface strength.3 cl, 1 tbl, 7 ex
ethod of manufacturing ink-jet printing paper with glossy coating and ink-jet printing paper with glossy coating // 2304651
FIELD: pulp-and-paper industry.SUBSTANCE: coating composition consisting of ink-compatible pigment, binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which coating is ennobled by means of supercalendering. As pigment, mixture of amorphous silicon dioxide with calcium carbonate or kaolin with outer specific surface 60-85 m2/g at ratio (25-50):(75-50). Binder is a mixture of polyvinyl alcohol with latex selected from class of styreneacrylic copolymers at ratio (20-25%):(7-18%) based on the weight of pigment. Cationic fixative is poly(diallyldimethylammonium chloride), which is directly incorporated into coating composition in amount 5-10%.EFFECT: enabled image quality and paper surface strength control.3 cl, 1 tbl, 13 ex

ethod of manufacturing ink-jet printing paper with glossy coating and ink-jet printing paper with glossy coating // 2304650
FIELD: pulp-and-paper industry.SUBSTANCE: coating composition consisting of ink-compatible pigment, water-soluble binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which glossy surface is formed. Coating composition is supplemented by wettability controlling agent based on polydimethylsiloxane resins in amounts 0.4 to 1.6% of the weight of pigment. Water-soluble binder is a mixture of polyvinyl alcohol with polyvinylpyrrolidone at ratio (90-50):(10-50) in amount 40-60% and styreneacrylic latex in amount 15-20% of the weight of pigment. When forming glossy surface, polyethylene oxide-based plasticizer is used in amount 7-15% of the weight of pigment followed by supercalendering at pressure in roll contact zone 20-25°C and temperature 50-90°C.EFFECT: improved manufacturability of process.5 cl, 1 tbl, 54 ex

Paper with coat, featuring silkiness by touch // 2294998
FIELD: paper coated with composition for coating various kinds of paper, for offset printing of paper used for manufacture of books, magazines, annual reports, or packaging paper.SUBSTANCE: composition comprises pigments and binder. Composition pigments are formed as microballs having sizes below 10 micrometers, preferably about 7 micrometers. Paper coated with such composition is silky by touch and has at least one surface coated with such composition, preferably both of its surfaces. This paper may be tracing paper.EFFECT: improved quality of paper owing to preventing sliding thereof during separation of sheets in stacks, delamination of coating during printing process and, accordingly, elimination of paper dusting and formation of impure imprints.7 cl, 2 dwg, 2 tbl, 13 ex
ethod of production of the pigment for manufacture of the cardboard and paper // 2283393
FIELD: pulp and paper industry; methods of production of the pigment for manufacture of the cardboard and paper.SUBSTANCE: the invention is pertaining to the method of production of the pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. Calcium carbonate is treated with aluminum sulfate in the aqueous medium. The treatment is conducted at aluminum sulfate consumption of 25-105 % to the mass of absolutely dry calcium carbonate at the temperature of 80-85°С during 90-180 minutes with production of the suspension containing 25-35 % dry substances in it. At that they use the aqueous medium containing the binding chosen from the group, which includes starch and polyvinyl alcohol in the amount of 0.5-3.0 mass % from the mass of the absolutely dry pigment, and-or the water soluble colorant in the amount of 0.1-0.5 mass % from the mass of the absolutely dry pigment. The suspension is additionally dried and grinded. The technical result of the invention is the improved quality of the pigment as well as expansion of its field of application.EFFECT: the invention ensures the improved quality of the pigment as well as expansion of its field of application.2 tbl
ethod of production of the pigment for manufacture of the cardboard and paper // 2283392
FIELD: pulp and paper industry; methods of production of the pigment for manufacture of the cardboard and paper.SUBSTANCE: the invention is pertaining to the method of production of the pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. Calcium hydroxide suspension is treated with aluminum sulfate solution in the aqueous medium at stirring. The treatment is conducted in the aqueous medium containing the binding in the dissolved state. The binding is chosen from the group, which includes starch and polyvinyl alcohol in the amount of 0.5-5.0 mass % from the mass of the absolutely dry pigment, and-or the colorant in the amount of 0.1-0.5 mass % from the mass of the absolutely dry pigment. The technical result of the invention is the improved quality of the pigment and expansion of its field of application.EFFECT: the invention ensures the improved quality of the pigment and expansion of the field of its application.2 tbl
ethod of production of the composite pigment for manufacture of the cardboard and paper // 2283391
FIELD: pulp and paper industry; methods of production of the composite pigment for manufacture of the cardboard and paper.SUBSTANCE: the invention is pertaining to the method of production of the composite pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. Calcium hydroxide is mixed with kaolin and added with aluminum sulfate in the aqueous medium at stirring. The aqueous medium contains the binding chosen from the group, which includes starch and polyvinyl alcohol in amount of 1.5-5.0 % from the mass of the absolutely dry pigment, and-or the water soluble colorant in amount of 0.1-0.5 % from the mass of the absolutely dry pigment. The technical result of the invention is the improvement of the composite pigment quality and expansion of its field of application.EFFECT: the invention ensures improvement of the composite pigment quality and expansion of the field of its application.2 tbl
ethod of production of the pigment for manufacture of the cardboard and paper // 2283390
FIELD: pulp and paper industry; methods of production of the pigment for manufacture of the cardboard and paper.SUBSTANCE: the invention is pertaining to the method of production of the pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. In the water at intense stirring feed powders of calcium hydrate and calcium carbonate at the ratio of the indicated components accordingly from 1.0:2.2 up to 1.0:12.9. The produced suspension is gradually added with aluminum sulfate at its ratio to the total mass of the calcium hydroxide and calcium carbonate from 1.0:0.85 up to 1.0:4.30. Then the temperature of the mixture is increased up to 8О-85°С and the produced reaction mixture is kept at stirring within 90-180 minutes with formation of the dispersion of the pigment with the share of the dry substances in it equal to 20-35 %. Then the dispersion is dried and grinded into the powder. The powder is dispersed in the water containing the given amount of the dissolved coolant and-or binding - starch or polyvinyl alcohol. The technical result of the invention production of the pigment with the new properties, that allow to expand the field of its application at manufacture of various types of the cardboard and the paper.EFFECT: the invention ensures production of the pigment with the new properties, expansion of the field of its application at manufacture of various types of the cardboard and the paper.2 tbl

ethod of preparing pigment for manufacturing paper and cardboard // 2274693
FIELD: paper-and-pulp industry.SUBSTANCE: invention relates to pigment, which can be used in manufacture of paper with filler, coated paper, and cardboard. Calcium hydroxide and calcium carbonate powders taken in proportion between 1.0:2.2 and 1.0:23.5 are added to vigorously stirred water, after which temperature of mixture is raised to 80-85°C and resulting reaction mixture is kept being stirred for 90-180 min to form dispersion of pigment containing 20-35% solids.EFFECT: improved quality of pigment at lower cost and extended application area.3 tbl

Paper for spray printing containing polyvinyl alcohol with amine functional groups // 2271412
FIELD: process of production of paper having a specific coating, applicable for spray printing.SUBSTANCE: a coating composed of polyvinyl alcohol with primary amine functional groups and mineral pigment is applied onto the paper surface.EFFECT: improved quality of paper for spray printing.21 cl, 13 dwg, 3 tbl, 11 ex
The method of impregnation of decorative paper // 2226578
The invention relates to a method for impregnating decorative paper, intended for the manufacture of highly wear-resistant laminated flooring materials, in which the decorative paper is first moistened and thereby impregnate amenomori, and thus regulate the content of the resin

The water composition sizing agent and method for producing paper // 2109099
The invention relates to aqueous compositions sizing agent and method for producing paper
Heat-sensitive composition to protect the paper from a fake // 2108422
The invention relates to thermosensitive recording materials, in particular paper and taking into account the major area of application is the production of business and securities can be attributed to the means of their protection against forgery
 
2551071.
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