Barrier for mineral oil

FIELD: chemistry.

SUBSTANCE: invention relates to the use of a liquid composition as a barrier layer for packaging materials. The liquid composition comprises at least one terephthalate ionomer and at least one calcium carbonate containing a filler. Terephthalate ionomer contains anionic substituents selected from the sulfonate groups having an acid number of at least 1 mg KOH/g of ionomer.

EFFECT: improved properties.

9 cl, 5 tbl, 1 dwg, 5 ex

 



 

Same patents:
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

FIELD: textile fabrics, paper.

SUBSTANCE: aqueous solutions are related to toluylene optical bleaches and may be used in production of chalk overlay paper of high whiteness. Aqueous solutions contain at least one optical bleach, polyvinyl alcohol, having extent of hydrolysis over 75% and Brookfield viscosity of 2-40 mPa·s, and water. This composition may be used for paper coating. It may be applied on paper after its moulding to produce chalk overlay paper.

EFFECT: provision of stability in storage of aqueous solutions of toluylene optical bleaches and simplified method for production of chalk overlay paper.

9 cl, 3 tbl, 3 ex

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

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

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

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

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

The invention relates to a method of making a composition used in the paper industry for the application of surface coatings on paper

The invention relates to compositions of decorative coatings paper for Wallpaper and can be used in the manufacture of Wallpaper

FIELD: chemistry.

SUBSTANCE: present invention relates to formaldehyde-free coating compositions. The coatings are used to endow fibrous panels and acoustic panels, such as ceiling tiles, with sag resistance. The composition includes a polyacid copolymer having at least two carboxyl groups, anhydride groups or salts thereof, a compound having a hydroxyl group, a phosphorus-containing catalyst and calcium aluminosilicate powder.

EFFECT: sag resistance, rigidity and strength of the formaldehyde-free coating.

8 cl, 1 dwg, 5 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: clamed invention relates to method of obtaining polyuretdione resin with carboxyl functional groups for application in powder covering compositions, which includes stages: (a) carrying out reaction of at least one isokyanite NCO functional uretdione with at least one alcohol in ratio of free NCO groups to hydroxyl groups in the range from 0.5:1 to 0.5:3, and (b) carrying out reaction of resulting hydroxyl-functional polyuretdione with di- and/or polyfunctional acid(acids) and/or their anhydride(anhydrides), resulting polyuretdine resin with carboxyl functional groups has carboxyl number in the range from 20 to 300 mg KOH/g, where carboxyl number is determined according to DIN EN ISO 2114. Also described are: obtained by claimed method polyuretdione resin with carboxyl functional groups, powder covering composition, which contains such resin, method of applying covering on substrate, as well as substrate covered with powder covering composition.

EFFECT: creation of method of obtaining polyuretdione resin, which ensures large density of transverse bonds in application as hardener in powder covering compositions, as well as desirable technological properties of powder coverings, such as low temperatures of hardening, thin films and high elasticity in combination with perfect stability of covering layers to atmospheric impact.

10 cl, 4 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: epoxy polyester paint composition contains the following (wt %): epoxy diane resin with epoxide equivalent weight of 1550-4000 g/eq 18.0-40.0, polyester resin based on a product of polycondensation of ethylene glycol with a saturated dibasic acid 5-15, methanol-esterified melamine-formaldehyde resin 3-5, pigments 6-14, nanofiller 5-10, texturing agent 0.1-0.3, orthophosphoric acid 0.5-0.8, dispersant 0.3-0.7, organic solvents- the balance.

EFFECT: invention reduces the drying temperature, increases hardness, bending strength, return shock and improves protective properties.

2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: branched amorphous macro-polyols are obtained by reacting at least one carbonic acid component and at least one alcohol component consisting of 10-25 mol % alcohol with at least three functional groups, and 75-90 mol % additional alcohol containing linear and/or branched aliphatic and/or cycloaliphatic and/or aromatic diols and/or polyols, in the presence of a cross-linking agent selected from a group comprising polyisocyanate and/or melamine resin and/or derivative thereof. The polyester is characterised by molecular weight of 2500-4500 g/mol, hydroxyl number of 0-200 mg KOH/g and acid number of 0-10 mg KOH/g. Described is a method of coating metal bands and coated metal bands obtained using said method.

EFFECT: sufficient flexibility of coating of metal bands combined with sufficient reactivity of cross linkage.

12 cl, 8 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to aqueous polyacrylate dispersions for coating. The dispersion contains a hydrophobic polymerisation product with hydroxyl functional groups, a hydrophilic polymerisation product with hydroxyl functional groups and contains, as a solvent, cosolvents consisting of at least one hydrophobic, water-immiscible hydrocarbon whose initial boiling point (according to ASTM D86-05) ranges from 170°C to 250°C and final boiling point (according to ASTM D86-05) ranges from 200°C to 280°C.

EFFECT: invention is suitable for producing aqueous two-component polyurethane lacquer with considerably larger thickness of the bubble-free layer.

8 cl, 2 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: composition for fixing wrapping articles contains A) 1-60 wt % of at lest one resin of α,β-unsaturated polyether based on at least one unsaturated mono-, di- or tricarboxylic acid and/or substance containing molecules with mono-, di- or tricarboxylic acid groups, at least one polyol, B) 0.1-80 wt % of at least one inorganic and/or an organic-inorganic hybrid component, having functional groups for reaction with components A) and C), where said hybrid components are polymers or colloidal solutions based on silicon, titanium or zirconium and oxygen atoms, which contain hydroxyl and/or alkoxy groups and/or hydroxyalkyloxy groups and/or organic fragments, which have epoxy and/or isocyanate and/or unsaturated groups, C) 2-80 wt % of at least one monomer and/or oligomeric unsaturated component, which is styrene, vinyl toluene, hexanediol dimethacrylate, butanediol dimethacrylate and/or (meth)acrylates of products of a polyaddition reaction of ethylene oxide with trimethylolpropane capable of reaction with components A and B, and D) 0-15 wt % conventional additives, where wt % is calculated relative the total weight of the composition.

EFFECT: excellent heat conductivity properties and high level of electrical insulation along with excellent adhesion and thermal stability.

6 cl, 1 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: composition contains the following in wt %: 5-80 polyester A copolymer obtained as a result of condensation with itaconic acid; 5-80 (meth)acrylate homopolymer and/or copolymer B consisting of more than 50 wt % monomers of formula I where R1 denotes hydrogen or methyl and R2 denotes an alkyl residue, an aliphatic or aromatic residue with 1-5 carbon atoms and 10-80 graft copolymer from type A polymer and type B polymer (polymer AB). Polyester A has a straight or branched structure with OH number from 5 to 150 mg KOH/g, and acid number less than 10 mg KOH/g, and number-average molecular weight 700-25000 g/mol. Content of itaconic links in the polyester copolymer per total content of polycarboxylic acids ranges from 0.1 mol % to 20 mol %.

EFFECT: invention enables to obtain well compatible polymer structures which do not contain styrene or derivatives thereof, based on a polyester graft polymethacrylate copolymer.

17 cl, 3 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: composition contains a radiation-curable olibomer, having glass transition temperature Tg and/or melting point Tm lower than 30°C. The radiation-curable oligomer is obtained through reactionof one or more carboxyl functional polyesters with one or more monoepoxides modified with a (meth)acrylic compound, and/or one or more polyepoxides and one or more α, β-unsaturated carboxylic acids.

EFFECT: obtaining coating compositions, having good chemical resistance, solvent resistance, scratch resistance and surface hardness coupled with improved flexibility, adhesion and scratching during flexure and fast deformation, improved corrosion resistance and improved heat resistance and good electrical insulation properties.

12 cl, 2 tbl, 29 ex

FIELD: chemistry.

SUBSTANCE: invention relates to processing plastics, specifically to a polyester composition for protective coating metal surfaces. A polyester composition is described, containing the following in wt %: polyethyleneterephthalate - 10.0-92.5, dimethylphthalate and/or diethylphthalate - 4.5-87.0, copolymer of ethylene with vinyl acetate - 1.5-12.0, hydroquinone - 0.1-0.8, heat stabiliser - 0.2-2.5 and talc or basalt as filler - 0.5-12.5.

EFFECT: proposed polyester composition provides 1,5 times increase in strength and 1,5-2 times increase in adhesion strength to steel at 20°C.

2 cl, 14 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: thermoplastic for marking automobile roads and aerodromes contains polyester resin with melting point of 70-85°C and acid number 35-40 mg KOH/g, obtained based on phthalic anhydride and glycerin in amount of 20-30 wt %, rutile titanium dioxide in amount of 3-10 wt %, white quartz sand 21-37 wt %, glass microspheres in amount of 4-24 wt %, Laprol 3003 - polyether with molecular weight of 3000 based on propylene and ethylene oxides in amount of 1-10 wt % and 10-30 wt % crushed marble.

EFFECT: thermoplastic is characterised by high wear resistance, does not cause skidding, dries fast when deposited on the road surface, has good adhesion to the road surface and can be used in different climatic regions under the temperature of -40°C - +40°C.

2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: claimed is raw material mixture for obtaining packing material, which contains paper wastes, natural zeolite, starch and water.

EFFECT: invention makes it possible to obtain packing paper, which has good moisture-regulating properties, and reduce cost of its production.

FIELD: food industry.

SUBSTANCE: inventions group relates to grain products. The first subject of the invention is a grain product including grain kernels that are at least partly polished and coated with a coating layer. The said coating layer includes a protein matrix with fibrous food ingredients particles dispersed in the matrix. The fibrous food ingredient contains powdery cereal offal. The coating layer contains 3 wt % - 10 wt % of the food fibrous ingredient in terms of dry weight of grain kernels with coating. Additionally, the invention envisages a method for production of a dry grain product enriched with food fibres, involving coating of grain kernels, at least partly polished, with fibrous food ingredients particles and water dispersion containing protein with subsequent drying of coated grain kernels. The third subject of the invention is a fluid-permeable film material pouch containing the grain product.

EFFECT: food fibres are well retained on the grain product surface even after cooking in an excessive water quantity.

12 cl, 1 tbl, 3 ex

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