SUBSTANCE: invention relates to compounds of formula (I) and formula (II), where R1 and R2, independently from each other, are selected from aliphatic hydrocarbons, containing from 1 carbon atom to 30 carbon atoms, provided that at least one of R1 and R2 is selected from aliphatic hydrocarbons containing at least 8 carbon atoms, and A is a halogen as a hydrophobicity-providing agent, such as adhesive for making paper.
EFFECT: invention discloses chemical compounds.
9 cl, 2 tbl, 6 ex
SUBSTANCE: method involves the addition of an aqueous emulsion, comprising a reactive sizing agent and an insolubilising agent, either separately or in a blended form to aqueous pulp slurry and forming the slurry into cardboard or paperboard. The reactive sizing agent comprises at least 30 wt % of a linear saturated fatty acid anhydride C14-22. The insolubilising agent selected from the group consisting of alum (aluminium sulphate) and polyaluminumchloride (PAC).
EFFECT: invention makes it possible to increase the paperboard resistance to hot hydrogen peroxide solution and lactic acid.
10 cl, 9 tbl, 6 ex
FIELD: textiles, paper.
SUBSTANCE: invention relates to the pulp and paper industry. The method comprises application of water-resistance emulsion, manufacturing of perform of corrugated cardboard, flexographic printing for application of crease lines and printing and application of the water-resistance emulsion. The water-resistance emulsion is fed into the printing plate of the flexographic machine and transferred uniformly on the plane and ends of the perform coming into this form before flexographic printing, and the water-resistance emulsion is used as water emulsion of paraffin having a particle size up to 1 micron with the paraffin content of 50 -90%.
EFFECT: invention enables to simplify the method of applying the water-resistance coating and to improve the uniformity of the applied water-resistance layer.
SUBSTANCE: invention relates to emulsion for paper gluing, which includes gluing agent based on maleated vegetable oil, representing maleated triglyceride, in which at least 50 wt % of the total content of fatty acids in triglycerides are monounsaturated. Invention also relates to paper-gluing agent, including maleated vegetable oil, in which at least 50 wt % of the total content of fatty acids in triglycerides are monounsaturated, and alkenyl succinic anhydride, and/or fatty acid anhydride, and/or anhydride of fatty acid and acetic acid, and/or anhydride of fatty acid and rosin acid. It also relates to method of obtaining paper-gluing emulsion, including emulsification of gluing agent based on maleated vegetable oil, which represents maleated triglyceride, in which at least 50 wt % of the total content of fatty acids in triglycerides are monounsaturated, in water phase by means of emulsifier and/or by means of intensive mixing; or mixing maleated vegetable oil, which represents maleated triglyceride, in which at least 50 wt % of the total content of fatty acids in triglycerides are monounsaturated, with alkenylsuccinic anhydride and/or fatty acid anhydride.
EFFECT: invention makes it possible to increase gluing efficiency.
26 cl, 17 ex, 7 tbl, 6 dwg
FIELD: textiles, paper.
SUBSTANCE: invention relates to pulp and paper industry and relates to a method and system of use of starches with a low content of fatty acids in the sizing composition for paper, to inhibit the precipitation of multivalent salts of fatty acids. The method of inhibiting the precipitation of multivalent saturated fatty acids on the equipment and/or devices for sizing of paper consists in using the composition for sizing the paper surface, containing elevated levels of starch solids for sizing the surface, and the source of polyvalent cations, such as drying salt of multivalent metal, by including (wholly or partially) one or more starches with low content of fatty acids for sizing the surface in the composition for sizing the paper surface.
EFFECT: invention provides a sized paper having improved properties.
24 cl, 4 dwg
FIELD: textiles, paper.
SUBSTANCE: group of inventions discloses the size press compositions and methods of production of sized paper products including linerboard. The size press compositions comprise at least one non-reactive cationic surface sizing agent, at least one reactive sizing agent, at least one reinforcing resin, at least one binder, and water. At least one non-reactive cationic surface sizing agent may be a polymer in the form of dispersion, emulsion or latex, with positive zeta-potential at a pH lower than about 6. At least one reactive sizing agent can be a dispersion, emulsion or latex, including alkyl ketene dimer or alkyl succinic acid anhydride. At least one reinforcing resin may be a polyamidoamine-epichlorohydrin resin, or poly(dimethyldiallylammonium chloride). In the method of preparation of the paper composition the size press composition is applied to paper or cardboard, and the composition comprises its components in the predetermined ratio of ingredients.
EFFECT: reduction of impact of reactive sizing agents on the friction coefficient of the finished paper or paperboard.
15 cl, 7 tbl, 7 ex
SUBSTANCE: invention relates to recording sheets used in printing processes. The recording sheet comprises a substrate of the web of cellulosic fibres and the sizing composition. The sizing composition comprises a binder and a divalent metal salt. The said salt in a concentration of at least 51% of the total concentration and not less than 2500 parts per million is located at a distance within 25% of the total substrate thickness from at least one surface of the said substrate. At that the recording sheet has Qtotal as a measure of the amount of the sizing agent in the transition from the outer edges towards the middle of the sheet in cross-section of less than 0.5. Also a method of production of the recording sheet is described.
EFFECT: said substrate and the sizing agent interact with formation of the I-shaped structure of the recording sheet which provides an optical density of black printing of at least 1,15.
20 cl, 15 dwg, 2 tbl, 10 ex
FIELD: textiles, paper.
SUBSTANCE: invention relates to compositions for coating of printing paper, at that the said compositions comprise microfibrillated cellulose (MFC) and one or more polysaccharide hydrocolloids, and the application of the said compositions. In addition, the invention relates to the coated paper comprising a first layer of polysaccharide hydrocolloid(s) and a second layer of MFC, and the use of the said paper.
EFFECT: reduction of garnetting or fuzzing of paper.
20 cl, 13 dwg
SUBSTANCE: binder for making paper and cardboard contains carbamide, formaldehyde, melamine, cationic starch, glycerine, sodium silicate and a surfactant which contains fatty alkylamidopropylbetaine, with the following ratio of components, wt %: carbamide 29-36; formaldehyde 35-42; melamine 11-12; cationic starch 3-5; glycerine 2-4; sodium silicate 1-12; surfactant 3-6.
EFFECT: invention enables to obtain binder for making paper and cardboard, which meets requirements for mechanical strength, water-resistance and toxicity, with high stability of aqueous dispersions.
2 cl, 2 tbl
FIELD: textiles, paper.
SUBSTANCE: method of production of paper pulp for making filled kinds of paper with use of calcium carbonate as the filler comprises preparing suspensions of milled cellulose and calcium carbonate, adding to them of the predetermined amounts of the modifying agent in the form of nano powders of oxide or hydroxide of aluminium or their mixtures, mixing the dispersions to obtain a fibrous mass, and adding to it of the gluing component and the auxiliary agent to obtain the paper pulp. As a gluing component the alkylketene dimer is used, and as an auxiliary agent the cationic starch is used in amounts of 0.3-0.4, and 0.5-0.7%, based on dry substance in the paper pulp.
EFFECT: increased degree of retention of the filler.
1 tbl, 5 ex
SUBSTANCE: invention includes (a) at least one optical bleaching agent of formula (1) , wherein R1 denotes hydrogen or SO3M, R2 denotes hydrogen or SO3M, R3 denotes hydrogen or CH2CO2M, R4 denotes CH2CO2M, CH(CO2M)CH2CO2M or CH(CO2M)CH2CH2CO2M, where M denotes hydrogen, a cation of an alkali metal, ammonia, mono-methyl-di-C2-C3-hydroxyalkylammonium, dimethyl-mono-C2-C3- hydroxyalkylammonium, ammonium, which is mono-, di- or trisubstituted with a C2-C3 hydroxyalkyl radical, or a mixture of said compounds, (b) a magnesium salt or (c) binder, which is selected from a group consisting of natural starch, enzyme-modified starch, and chemically modified starch, wherein there are 0.1-15 parts of component (b) for one part of component (a). The invention also relates to a method of bleaching paper using said composition.
EFFECT: composition is a more efficient means of achieving high paper whiteness.
9 cl, 4 ex, 3 tbl
FIELD: textile, paper.
SUBSTANCE: invention relates to a water dispersion (its version) of a cellulose-active gluing substance (its version), a method to produce the water dispersion (its version), application of the water dispersion and a method of paper making. The water dispersion of the cellulose-active gluing substance contains an acid anhydride, an anion polyelectrolyte and a nitrogen-containing organic compound, which is an amine or a corresponding quaternary ammonia compound, having the molecular weight of less than 180 or having one or several hydroxyl groups. The method to produce the water dispersion of the cellulose-active gluing substance and its version includes dispersion of the acid anhydride in the water phase in presence of the anion polyelectrolyte and the nitrogen-containing organic compound, which is the amine or the corresponding quaternary ammonia compound, having the molecular weight of less than 180 or having one or several hydroxyl groups. The above specified water dispersions of the cellulose-active gluing substance may be used for sizing in mass or for surface sizing in paper making. The method of paper making includes addition of the above-specified water dispersions of the cellulose-active gluing substance to the water suspension of cellulose with subsequent dehydration of the produced suspension on a net of a paper-making machine or by application of these dispersions onto a surface of a cellulose sheet.
EFFECT: improved stability of the gluing water dispersion and efficiency of sizing, energy and capital cost saving.
41 cl, 13 tbl, 7 ex
FIELD: paper industry.
SUBSTANCE: cellulose mass produced from lignocellulose material, method for boiling of lignocellulose material and method of its softening may be used in pulp and paper industry to produce paper, cardboard, fibre board and similar industrial products. Cellulose mass is produced from lignocellulose material exposed to mixing in aqueous solution of tetraalkylammonium salt under action of microwave radiation. Method for boiling of lignocellulose material and method of its softening repeat above-mentioned method for production of cellulose mass. Treated lignocellulose material is preferably hard or soft wood.
EFFECT: production of new cellulose material, reduced consumption of energy and improvement of environment.
18 cl, 11 ex
FIELD: textile fabrics, paper.
SUBSTANCE: composition concern pulp and paper industry and is intended for cellulose-bearing materials surface treatment. The first composition includes modified carbamide - formaldehyde oligomer and in the capacity of modifier is sodium salt of carboxymethyl cellulose. The second composition contains mentioned above components and melamine. The third composition contains components of the first composition and cationic starch.
EFFECT: improving of composition and strength properties of cellulose-bearing materials.
3 cl, 3 tbl, 12 ex
SUBSTANCE: invention proposes use of strobilurines as fungicidal agents designed to be applied in the form of dispersions in industrial process water and in the form of pulp both used in paper industry. Application areas include preservation of wet sheet, protection against mildew, in particular protection of paper products, or other areas wherein fungicidal or mildew-controlling agents are required. Water systems, which can be treated with strobilurines include papermaking machine systems, fibrous intermediate and paper systems, cooling towers, and heat-exchangers.
EFFECT: increased availability, reduced toxicity, and avoided involvement of volatile and inflammable organic solvents.
38 cl, 2 tbl, 4 ex
FIELD: medicine, pharmaceutics.
SUBSTANCE: invention relates to novel compounds of formula I, possessing ability of binding with delta-opioid receptors. In formula R1 is selected from the group, consisting of i) phenyl, optionally substituted with one-two substituents, independently selected from the group, consisting of C1-4alkyl, C1-4alcoxy, C1-4alkylthio, hydroxyl, di(C1-4alkyl), aminocarbonyl, chlorine and fluorine, in such a way that only one di(C1-4alkyl)aminocarbonyl is present; ii) naphthyl; iii) pyridinyl, optionally substituted with one substituent, selected from the group, consisting of C1-4alkyl, C1-4alcoxy, C1-4alkylthio, hydroxy, fluorine, chlorine and cyano; iv) pyrimidin-5-yl; v) furanyl; vi) thienyl; vii) 5-oxo-4,5-dihydro-[1,2,4]oxodiazol-3-yl; and viii) di(C1-2alkyl)aminocarbonyl; Y represents ethyl, vinyl or bond; or Y represents O, when R1 represents optionally substituted phenyl, where substituent represents C1-4alcoxy; R2 represents phenyl, optionally substituted with one-two substituents, independently selected from the group, consisting of C1-4alkyl, C1-4alcoxy, fluorine, chlorine and cyano, trifluoromethoxy and hydroxy; or R2 represents phenyl, substituted with one aminocarbonyl, di(C1-4alkyl)aminocarbonyl, C1-4alcoxycarbonyl or carboxysubstituent; R3 is selected from the group, consisting of i) 3-aminocyclohexyl; ii) 4-aminocyclohexyl; iii) piperidin-3-yl; iv) piperidin-4-yl; v) pyrrolodin-2-yl-methyl, in which pyrrolodin-2-yl is optionally substituted by 3-rd or 4-th position with one or two fluorine-substituents; vi) azetidin-3-yl; vii) 2-(N-methylamino)ethyl; viii) 3-hydroxy-2-aminopropyl; ix) piperidin-3-yl-methyl; x) 1-azabicyclo[2.2.2]octan-3-yl; and xi) 8-azabicyclo[3.2.1]octan-3-yl; or R3 together with Ra and nitrogen atom, which they both are bound to, form piperazinyl, optionally substituted with 4-C1-4alkyl; Ra represents hydrogen, 2-(N-methylamino)ethyl or C1-2alkyl, optionally substituted with azetidin-3-yl.
EFFECT: compounds can be used in treatment of pain in the range from medium to strong, caused by diseases or conditions, such as osteoarthritis, migraine, burn, fibromyalgia, cystitis, rhenite, neuropathic pain, idiopathic neuralgia, toothache, etc.
21 cl, 4 tbl, 26 ex