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Electroactive polymer and material based on this polymer Invention relates to the electric engineering, and it can be widely used during manufacturing of the converters of external action of physical fields to electric signal. The invention describes electroactive polymer designed for application onto metal or semiconductor containing copolymer structure of non-uniformly distributed fragments of diarylfluorene and/or diarylanthrone interconnected via molecular chain of poly(arylene ether ketone)s or poly(arylene ether sulphone)s, as per the following formulae: |
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Biodegradable material and method of producing biodegradable material Method relates to biodegradable material production. Biodegradable material, which is a chemical bond-crosslinked product, formed by a multivalent compound A, which includes 3 or more functional groups X, selected from a group consisting of a hydroxyl group, a thiol group and an amino group, and a multivalent compound B, which includes 3 or more functional groups Y, selected from a group consisting of a carboxyl group, an isocyanate group and a thioisocyanate group, where the chemical cross links are formed via condensation reaction of said functional group(s) X and said functional group(s) Y, where the value (y+z)/(x+z) ranges from 1.2 to 4.0, if MA≥MB, and the value (x+z)/(y+z) ranges from 1.2 to 4.0, if MA<MB, where x denotes the number of functional groups X not involved in the condensation reaction with said functional groups Y, y denotes the number of functional groups Y not involved in the condensation reaction with said functional groups X, z denotes the number of said cross links, MA denotes the weight-average molecular weight of said multivalent compound A and MB denotes the weight-average molecular weight of said multivalent compound B. The invention also discloses a vessel embolisation material, an anti-adhesive material, a wound-dressing material, a blood-staunching material and a material which prevents involuntary urination. |
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Method for obtaining polyhydroxycarboxylic acid Invention relates to method for obtaining polylactic acid and device for said method realisation. Method includes the following stages: realisation of polymerisation with ring opening with application of catalyst and either catalyst deactivator compound or additive, blocking terminal groups, to obtain non-purified polylactic acid with molecular weight higher than 10000 g/mol. After that method includes stage for purification of non-purified polylactic acid by removal and separation of low-boiling compounds, including lactide and admixtures, from non-purified polylactic acid, by removal of volatile low-boiling compounds in form of gas-phase flow. Further, follows stage of purification of lactide from stage of removal of volatile components, and removal of admixtures from gas-phase flow of evaporated low-boiling compounds by condensation of evaporated gas-phase flow with obtaining condensed flow and further crystallisation from melt of condensed flow. Lactide is purified, and admixtures, which include catalyst residue and compound, which contains at least one hydroxyl group, are removed so that purified lactide is polymerised by its resupply into ring opening polymerisation. |
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Phosphated polyester plastics and thereof containing coating compositions Invention relates to liquid coating compositions, intended, for instance, for application on all types of containers such as containers for food and drinks, on sheets, as well as to coated products. Composition contains resinous binding agent and not more than 10 wt % of phosphate polyester. Phosphated polyester (polyester) provides higher adhesion of coating to container base. Compositions can be composed as, in fact, free of bisphenol A ("BPA") and bisphenol A diglycidyl ether ("BPADE"). Coated product contains base and coating, based on said coating liquid composition. |
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Intermittent reactor and its application for polymerisation of lactons Claimed invention relates to production of multifilament finer or polymer drops composed of polylacton obtained by polymerisation of L-lactide, D-lactide, D,L-lactide, meso-lactide, glycolidea, ε-caprolactone, carnonate tri-methylene or mixes thereof. Polymerisation is carried out in intermittent reactor provided with at least one mixer and driven piston to extract reaction product via at least one spinneret. Said process comprises the steps that follow. a) Preparation of reaction mix containing L-lactide, D-lactide, D,L-lactide, meso-lactide, glycolidea, ε-caprolactone, carnonate tri-methylene or mixes thereof, catalyst and, optionally, molecular mass regulator and other additives. b) Loading of said dry or fused mix into reactor. Thereafter reactor working volume is closed tightly by the piston. c) Polymerisation is performed in reactor heated to temperature higher than monomer fusion point at mixing. Note here that mixing elements can up and lower to different height irrespective of the piston. d) Reaction product is extracted from the reactor by extruding the polylacton melt through at least one spinneret to get monofilament fibre or polymer drops. |
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Present invention relates to a method of producing packaging made of polyethylene terephthalate (PET). Described is a method of producing an article made of PET from biological material, which includes processing a PET polymer made from biological material into an article made of PET from biological material, selected from a preform or packaging made of PET from biological material, where the PET polymer made from biological material contains at least one PET component, selected from monoethylene glycol (MEG), terephthalic acid (TA) and combinations thereof, obtained from at least one material containing biological substances, selected from timber industry wastes, agricultural wastes and combinations thereof. |
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Polymers capable of recovery and reversible thermal gel-formation Claimed invention relates to biodegradable and bioabsorbable block-copolymers in form of solid powder or wax-like powder. Described is composition of block-copolymer of AB, ABA or BAB type for introduction of medication, with said block-copolymer containing: at least first block-copolymer component of AB, ABA or BAB type, containing first hydrophobic A-block and first hydrophilic B-block, with first hydrophobic A-block representing biodegradable polyester, containing at least 60% of caprolacton and at least one second polyester-forming monomer, with said first hydrophilic B-block having first average molecular weight and containing polyethylene glycol; at least second block-copolymer component of AB, ABA or BAB type, containing second hydrophobic A-block and second hydrophilic B-block, with said second hydrophobic A-block containing biodegradable polyester, and second hydrophilic B-block having second average molecular weight and containing polyethylene glycol, with second average molecular weight being different from first average molecular weight; and total weight average molecular weight of block-copolymer composition constitutes from 1500 to 10000 Dalton, total content of A-block in composition constitutes approximately from 60 to 85% by weigh, and total content of B-block in composition constitutes approximately from 15 to 40% by weight, with total weight average molecular weight of B-block in composition constituting from 300 to 2000 Dalton, and said block-copolymer composition is solid at room temperature, is capable of reversible thermal gel-formation with obtaining in form of water polymer solution and is capable of converting into water polymer solution in less than thirty minutes with mixing without application of additives or heating above 60°C. Also claimed is method of introduction to warm-blooded animal of at least one medication in form with controlled release, including (1) provision of composition of block-copolymer of AB, ABA or BAB type mentioned above, (2) obtaining water polymer solution of said solid composition by combination of copolymer with water without impact of temperature above 60°C; and (3) introduction of said water polymer solution to said warm-blooded animal. Described is method of obtaining composition described above. |
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Solvent-free bio-based emulsion Invention relates to a method of producing toner particles based on bio-based amorphous polyester resin. The method includes bringing at least one bio-based amorphous polyester resin into contact with an optional crystalline polymer and an optional plasticiser in an extruder to obtain a polymer mixture; neutralising the polymer mixture in the extruder with a neutralising agent; bringing the polymer mixture in the extruder into contact with a surfactant; stirring the molten polymer mixture in the extruder; bringing the molten mixture into contact with deionised water in the extruder to obtain an oil-in-water emulsion containing latex; extracting the latex from the extruder; adding an optional crystalline polymer, an optional dye and optional paraffin to the latex to form a second mixture; aggregating the mixture to form particles; adjusting the pH of the mixture within the range of about 3 to about 10 to stop growth of particles; coalescing the particles at pH of about 5 to about 8 to obtain toner particles; extracting the toner particles. |
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Composition and methods of toner production Invention relates to toner. Toner contains oxidised bio-based polymer of amorphous polyether bio-based resin in combination with bio-based acid, crystalline polyether polymer and one or several ingredients, selected from the group, including dyes, paraffins and their combinations. Oxidised bio-based polymer has acidity index from approximately 2 mg KOH/g of polymer to approximately 200 mg of KOH/g of polymer. Amorphous polyether bio-based resin and bio-based acid are obtained from natural biological substance of vegetable origin or vegetable oils. Said amorphous polyether bio-based resin has ratio of carbon and oxygen content from approximately 2 to approximately 15. Toner consists of core of said amorphous polyether bio-based resin and said crystalline polyether polymer, and envelope of said amorphous polyether bio-based resin. Bio-based acid is selected from the group, including citric acid, citric acid anhydride and combinations, which is contained in amount from approximately 0.1 wt % to approximately 20 wt % of amorphous resin. Amorphous polyether bio-based resin is obtained from dimer diol, D-isocorbide, naphthalenedicarboxylate and dicarboxylic acid. |
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Present invention relates to polyesters. Polyester AB is described, it containes fragments derived from di- or polyfunctional organic acid compounds A, and fragments derived from di- or polyfunctional organic hydroxy compounds B, where compounds A include a fraction of a substance a1 in amount of a11 to a12 for at least one acid compound A1 and a fraction of a substance a2 in amount of a21 to a22 for at least one acid compound A2, and where compounds B include a fraction of a substance b1 in amount of b11 to b12 for at least one hydroxy functional compound B1 and a fraction of a substance b2 in amount of b21 to b22 for at least one hydroxy functional compound B2, where at least one of each of the fragments of compounds A1, A2, B1 and B2 is present, and at least two compounds corresponding to A2, or at least two compounds corresponding to B2 are present, where the acid compounds A1 and A2 and the hydroxy functional compounds B1 and B2 are defined as follows: group A1 of acid compounds includes organic diacic compounds having two acid groups per molecule, and organic polyacid compounds having three or more acid groups per molecule, which are selected from a group which includes isophthalic acid, trimellitic anhydride, hexahydrophthalic anhydride, cyclohexane-1,4-dicarboxylic acid and tetrahydrophthalic acid, and group A2 of acid compounds includes organic diacid compounds having two acid groups per molecule, and organic polyacid compounds having three or more acid groups per molecule, which are selected from a group which includes adipic acid, dimeric fatty acids and sebacic acid, where the acid groups are carboxyl groups -COOH, and where two adjacent acid groups, i.e. acid groups which are linked by carbon atoms directly bonded to each other, can be partially or completely substituted with a corresponding acid anhydride group, and group B1 of hydroxy functional compounds includes organic dihydroxy compounds having two hydroxyl groups per molecule, and organic polyhydroxy compounds having three or more hydroxyl groups per molecule, which are selected from a group which includes trimethylol propane, 1,2-bishydroxymethylcylcohexane and 1,2-dihydroxypropane, and group B2 of hydroxy functional compounds includes organic dihydroxy compounds having two hydroxyl groups per molecule, and organic polyhydroxy compounds having three or more hydroxyl groups per molecule, which are selected from a group which includes 1,4-butanediol, 1,6-hexanediol, 2,2'-dihydroxydiethyl ether and 1,2-bis(2-hydroxypropoxy)propane. Method of using said polyester to produce a coating.is also described. |
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Method of obtaining polyarylates Claimed invention relates to method of obtaining polyarylates. Described is method of obtaining polyarylates by emulsion polycondensation, which includes preparation of organic-water-salt-alkali (THF-H2O-NaCl) solution of bis-phenol, cooling said solution to (10±4)°C, and introduction of melt of chloroanhydrite of aromatic dicarboxylic acid into it with intensive mixing, precipitation, washing and drying of target product, characterised by the fact that polyarylate-matrix is supplied at the stage of bis-phenol solution preparation simultaneously with bis-phenol in amount from 0.75 to 1.3 wt. p. per 1 wt. p. of bis-phenol, with neutralisation stage and precipitation being performed simultaneously by supply of acid (neutralising agent) and water (precipitating agent) into reaction medium. |
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Aromatic polyethersulphone ketones Claimed invention relates to aromatic polyethersulphone ketones. Described are aromatic polyethersulphone ketones of gotmula: , where n = 1-20; z = 2-100; R = , . |
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Aromatic polyethersulphone ketones Claimed invention relates to aromatic polyethersulphone ketones. Described are aromatic polyethersulphone ketones of gotmula: , where n = 1-20; z = 2-100; R =,. |
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Aromatic polyethersulphone ketones Claimed invention relates to aromatic polyethersulphone ketones of construction and film purpose. Described are aromatic polyethersulphone ketones of formula , where n=1-20; z=2-100; |
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Method for producing foam composite element Invention relates to a method for producing a foam composite element, comprising the steps of providing a cover layer, the applying of a bonding agent and the applying of a foam material layer comprising polyurethane and/or polyisocyanurate to the bonding agent. The bonding agent is selected from at least one compound selected from the group comprising polyetherpolyol (B.1), polyurea dispersion (B.3) and polyesterpolyol (B.4), wherein polyetherpolyol (B.1) is selected fro a group consisting of polyoxypropylene polyol, polyoxypropylene-polyoxyethilene polyol and polyether carbonate polyol. The invention also relates to the foam composite elements obtained by means of the method according to the invention. |
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Method of producing polyester polyols containing ether groups and ester groups Present invention relates to a method of producing polyester polyols using a hybrid catalyst, comprising a double metal cyanide complex-based catalyst and a cocatalyst. Described is a method for synthesis of polyester polyols containing ether and ester groups by copolymerisation of at least one alkylene oxide with at least one cyclic compound of general formula , where X is selected from a group comprising C=O and CR1R2, where R1 and R2 each represent H and where Y is selected from a group comprising -(CR3R4)m and a group, where D is and E is a bond, where m is an integer from 0 to 5 and where R3 and R4 are independently selected from a group comprising hydrogen, methylene and alkyl, and where r and s are each equal to 0, t is 2, and where R9, R10 are independently selected from a group comprising hydrogen and alkyl, in the presence of at least one initiator and at least one hybrid catalyst, where said hybrid catalyst comprises at least one double metal cyanide complex-based catalyst (DMC catalyst) and at least one cocatalyst, and said cocatalyst is selected from a group comprising titanium alkoxides, and where the DMC catalyst is present in amount of 5-2000 ppm, while the cocatalyst is present in amount of 1-1000 ppm, each relative to the total weight of the end product. |
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Aromatic polyester sulphone ketones Invention refers to high-molecular compounds, namely to aromatic polyester sulphone ketones of formula |
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Method of modifying surface of polyethylene terephthalate powder Method of modifying the surface of polyethylene terephthalate powder is realised by treating polyethylene terephthalate with a fluorine-containing modifier while heating in a solvent medium. Polyethylene terephthalate powder is treated with a polyfluorinated alcohol selected from 1,1,3-trihydroperfluoropropanol-1, 1,1,5-trihydroperfluoropentanol-1, 1,1,7-trihydroperfluoroheptanol-1 and 1,1,9-trihydroperfluorononanol-1, in amount of 5 pts.wt per 100 pts.wt polyethylene terephthalate, at 50°C in a medium of n-heptane for 3 hours with ultrasonic frequency of 40 kHz. The size distribution of polyethylene terephthalate particles is as follows, wt %: fine fraction with diameter of 50-80 mcm - 90, conglomerates with size of 100-150 mcm - 7, coarse particles in the form of flakes with size of 200-300 mcm - 3. |
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Device and method for production of partially crystallised polymer Proposed method comprises preparing crystallisable polymer melt. This process includes the steps that follow. Processed, mainly, amorphous initial polymer pellets are introduced in crystallisation reactor (1) to be partially crystallised at heating without smelting. Then, produced partially crystallised polymer is discharged from said reactor (1). Note here that at least a portion of said polymer is discharged and fed to said reactor (1) for reverse mixing for reduction in susceptibility of sticking. This process differs from know processes in that discharged, partially crystallised polymer is combined and mixed with initial polymer before reverse mixing in reactor (1). Then, said mix is fed in said reactor (1). Note here that said reactor (1) is communicated with transfer section including carrier (3) and inclined slope (5) for discharge of at least a portion of partially crystallised polymer for reverse mixing in said reactor (1). Invention covers also the device for process implementation. |
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Present invention relates to ester compositions which include molten-phase derived polyethylene terephthalate. Described is an ester composition for packaging, which includes: molten phase-derived polyethylene terephthalate, with fragments of terephthalic acid and a monomer which contains two or more condensed aromatic rings, in amount of about 0.5 mol % to 2.5 mol % with respect to the total amount of dicarboxylic acid residues in the molten phase-derived polyethylene terephthalate, making up 100 mol %; and titanium alkoxide, where the titanium alkoxide is present in amount of 30-100 ppm of titanium atoms with respect to the total weight of the ester composition, where the polyester composition is in the form of transparent granules which do not contain TiO2, antimony or germanium, and where the polyester composition contains molten phase-derived polyethylene terephthalate, with inherent viscosity (I.V.) of at least 0.75 dl/g. Also described is a polyester composition for packaging, which includes: molten phase-derived polyethylene terephthalate, with fragments of 2,6-naphthalene dicarboxylic acid, in amount of about 0.5 mol % to 2.5 mol % with respect to the total amount of dicarboxylic acid residues in the molten phase-derived polyethylene terephthalate, making up 100 mol %; and titanium alkoxide, which is present in amount of 5-60 ppm of titanium atoms with respect to the total weight of the polyester composition, where the polyester composition is in the form of transparent granules which do not contain TiO2, antimony or germanium, and where the polyester composition contains molten phase-derived polyethylene terephthalate, with inherent viscosity (I.V.) of at least 0.75 dl/g. Described is a method of producing a molten phase-derived polyethylene terephthalate composition, which includes: preparing a mixture of monomers containing ethylene glycol, at least one acid selected from terephthalic acid, and a monomer with two or more condensed aromatic rings, where the monomer with two or more condensed aromatic rings is present in amount of about 0.5-2.5 mol %, with respect to the total amount of dicarboxylic acid residues in the mixture, making up 100 mol %; esterifying the mixture of monomers in the absence of a catalyst to obtain a mixture of oligomers at temperature of 245°C and pressure of up to 40 psig; and reacting the mixture of oligomers in the presence of titanium alkoxide and in the absence of TiO2 to obtain molten phase-derived polyethylene terephthalate, where the obtained molten phase-derived polyethylene terephthalate has inherent viscosity (I.V.) achieved in a molten phase of at least 0.76 dl/g; and then moulding granules of molten phase-derived polyethylene terephthalate to obtain transparent granules; where the molten phase-derived polyethylene terephthalate does not contain germanium or antimony and where titanium alkoxide is present in amount of 30-100 ppm of titanium atoms with respect to the total weight of the obtained polyester composition. |
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Claimed invention relates to highly molecular compounds, namely to aromatic polyethers of a constructional and film purpose. Aromatic polyethers of formula: where R= n=2-20; z=2-50, are described. |
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Aromatic polyester sulphoketones Invention relates to aromatic polyester sulphoketones. Described are aromatic polyester sulphoketones of formula , where n=1-20; m=2-100; |
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Method of obtaining polyesterpolyols with terminal secondary hydroxyl groups Invention relates to method of obtaining polyesterpolyols with terminal secondary hydroxyl groups, including stage of interaction of polyester, containing terminal carboxyl groups of polyester with epoxide of general formula (1), in which R1 stands for alkyl or aryl residue, and interaction is carried out in presence of catalyst with at least one nitrogen atom in molecule, where polyester containing terminal carboxyl groups, which possesses acid number from ≥ 25 to ≤ 400 mg KOH/g and hydroxyl number ≤ 5 mg KOH/g, is obtained with application of from ≥ 1.03 to ≤ 1.90 mol of carboxyl groups or equivalents of carboxyl groups of acid component per mole of alcohol hydroxyl groups. |
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Method for modifying polyethylene terephthalate filament surface Invention refers to modifying polyethylene terephthalate (PETP) filament with functional additives for increasing thermal, photo-, wear- and hydrolytic stability. A method for modifying the polyethylene terephthalate filament suture involves processing polyethylene terephthalate with a modifier when heated in the solvent medium. The polyethylene terephthalate filament is processed at 40°C in the n-hexane medium for 1 h, and the modifier is 1,1,5-trihydroperfluoropentanol-1. |
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Semi-crystalline quickly resorbable polymer composition Invention relates to copolyether composition for manufacturing products for medical purposes, as well as to such product. Copolyether composition represents product of reaction of polycondensation polyester and at least one lactone. Polycondensation polyesther represents product of reaction of diglycolic acid and/or its derivative with diethyleneglycol and ethyleneglycol. Molar ratio of diethyleneglycol to ethyleneglycol is in the range from approximately 2:1 to 4:1. Copolyether composition contains from approximately 30 to 50 wt % of polycondensation polyether counted per the total copolyether weight and possesses degree of crystallinity in the range from approximately 10 to 50%. |
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Method of obtaining mixture of lactide derivatives Invention relates to method of obtaining mixture of compounds, which have formulas , and/or , with molar ratio of formula Ia and Ib compounds from 1:2 to 2:1, where R represents linear or branched aliphatic alkyl radical, containing from 1 to 6 carbon atoms, in which stereoisomerically pure compound of formula Ia, Ib or Ic or mixture of two or three compounds is mainly or completely converted with catalyst or mixture of at least two catalysts. |
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Mixtures containing oligomeric or polymeric compounds, production and use thereof Invention relates to construction materials. A mixture suitable for use as an additive for construction materials comprises: (A) at least one hydraulic binding agent or a latent hydraulic binding agent; (B) at least one copolymer obtained by converting: (α1) at least one ethylenically unsaturated comonomer with at least one functional group selected from COOH- groups, sulphonic acid groups, nitrile groups, hydroxylalkyl groups and amino groups; with (β) at least one oligomeric or polymeric compound obtained by converting: (a) at least one ethylenically unsaturated dicarboxylic acid or polycarboxylic acid or an anhydride or ester thereof; with (b) at least one at least trifunctional alcohol; and (c) at least one compound of general formula I : wherein R1 is selected from an alkyl with 1-4 carbon atoms; A is identical or different and is selected from alkylenes with 2-6 carbon atoms, n is a number from 4 to 40. Also disclosed is a mineral construction material, use of the mixture or mineral construction material for erecting buildings. Also disclosed is an oligomeric or polymeric compound, a method for production thereof, use and a copolymer. |
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Method of producing polymers using 1,6-hexanediol containing less than 500 ppm of aldehyde Disclosed is a method of producing a polymer, which includes reacting 1,6-hexanediol with dicarboxylic acids or diisocyanates in the presence of at least one catalyst, wherein the 1,6-hexanediol used is 1,6-hexanediol which, after production thereof by hydrogenation, is subjected to distillation at least once, where the molar ratio of oxygen to 1,6-hexanediol is less than 1:100, and which, during the distillation process, contains ≤5 ppm of catalytically active components and less than 500 ppm of aldehyde. |
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Claimed invention relates to polyether composite materials. Described is polymer composition, used as construction material, based on polybutyleneterephthalate-polytetramethyleneoxide block-copolymer with the following content: polybutyleneterephthalate 70 wt % and polytetramethyleneoxide 30 wt % with addition of thermostabiliser in ratio from 1 to 7% of the polymer matrix weight, characterised by the fact that as polymer matrix used is polybutyleneterephthalate-polytetramethyleneoxide block-copolymer and as organo-modified clay - organic clay of Gerpegezh CBD field, modified by quaternary ammonium salt. |
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Toner, method of producing toner and image forming method Invention relates to toner and a method for production thereof, as well as an image forming method. The toner contains polymer binder having an ester bond, a dye substance and a parting additive. The toner contains base particles, each base particle containing polymer binder and a parting additive. The parting additive includes a first C30-C50 alkyl monoester compound and a second C30-C50 alkyl monoester compound. The number of carbon atoms in the first C30-C50 alkyl monoester compound is different from the number of carbon atoms in the second C30-C50 alkyl monoester compound. The amount of the first C30-C50 alkyl monoester compound is the highest, and the amount of the second C30-C50 alkyl monoester compound is the second-highest or is the same as the amount of the first C30-C50 alkyl monoester compound. The amount of the first C30-C50 alkyl monoester compound is 44 wt % or higher, but less than 50 wt % with respect to the parting additive. The amount of the second C30-C50 alkyl monoester compound is 10 wt % or higher, but less than 50 wt % with respect to the parting additive. |
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Aromatic polyethersulfone ketones Aromatic polyethersulfone ketones of formula , where n=1-20; z=2-100; ; ; ; , are described. |
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Method of producing polyester binder for paint materials Present invention relates to a method of producing polyester binder for paint materials. Described is a method of producing polyester binder for paint materials, which includes polyesterification of polyatomic alcohols with cycloaliphatic anhydrides and phthalic anhydride, wherein the method comprises, before polyesterification, melting without mixing to temperature of 90-130°C polyatomic alcohols selected from 1,6-hexanediol and/or neopentyl glycol and/or trimethylol propane and/or butylethyl propanediol; loading the phthalic anhydride and cycloaliphatic anhydrides, selected from hexahydrophthalic anhydride and/or tetrahydrophthalic anhydride and/or 3- or 4-methyltetrahydrophthalic anhydride and or isomethyltetrahydrophthalic anhydride and/or endomethylene tetrahydrophthalic anhydride and further adding isophthalic acid; heating the reaction mass to 220-260°C and holding until achieving acid number of the base of 3-15 mg KOH/g; cooling the mass to 120-160°C and loading adipic acid; heating the mass to 220-250°C and holding until dynamic viscosity of 65% of the solution of the base reaches 1500-5000 mPa·s. |
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Present invention relates to block-copolyesters. Described are aromatic block-copolyesters of formula where n=1-20; m=20-50; z=2-50. |
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Claimed invention relates to aromatic polyethers. Described are the aromatic polyethers of formula where |
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Claimed invention relates to aromatic polyethers. Described are the aromatic polyethers of formula where n=2-20; z=2-100; |
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Halogen-containing polyarylene ether ketones Described are polyarylene ether ketones of formula |
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Biodegradable polymers and methods of their obtaining Claimed invention relates to biodegradable polymers and especially to biodegradable polymers, based on polyacrylic and polyaspartic acids. In addition, the claimed invention relates to methods of obtaining the said biodegradable polymers and their application as, for instance, a protective covering or a packing material. In particular, the claimed invention relates to methods of obtaining the biodegradable polymers, which includes a) preparation of an acid mixture of polyaacrylic and/or polyaspartic acid, sodium ions, one or more oligosaccharides or their derivatives and water, where the obtained mixture has pH 5 or lower; b) supporting the mentioned acid mixture temperature in the interval from 80°C to 130°C until a homogenous suspension is formed; and c) addition of polyvinyl alcohol (PVA) and one or more polycarboxylic acids or their derivatives to the mixture from stage (b) with the support of temperature in the interval from 80°C to 130°C until the biodegradable polymer is formed. |
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Method of obtaining aliphatic polyester, possessing increased molecular weight Method of obtaining an aliphatic polyester, possessing an increased molecular weight, includes stages (i) of a quantitative introduction of diisocyanate in a polyester-based prepolymer, which has a number-average molecular weight of 5000 or higher and contains terminal hydroxyl groups, and in which at least one acidic component is represented by a succinic acid compound in a melted condition at a temperature not lower than its fusion temperature, where the quantity of disiocyanate is equivalent to the value between one tenth and double quantity of the hydroxyl groups in the prepolymer based on the aliphatic polyester, (ii) a quantitative and continuous introduction of the prepolymer based on the aliphatic polyester, containing diisocyanate, obtained at stage (i), in a mixing vessel, its unloading from the mixing vessel at mixing and its supply into a reservoir for a reaction of combination and (iii) realisation of the interaction of the prepolymer based on the aliphatic polyester with diisocyanate in the reservoir for the reaction of combination. |
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Chamber module for glycolide and lactide synthesis reactor Invention relates to chemistry and can be used for industrial synthesis of glycolide and lactide monomers used as raw material for producing biodegradable polymers of different composition. The chamber module for a glycolide and lactide synthesis reactor includes a chamber module housing with a jacket which provides working temperature of up to 350°C, nozzles for providing a vacuum and blowing working volumes with an inert gas, a mixer and a cone-shaped bottom which is provided with a jacket, a mixing device and an outlet pipe for the bottom residue. The mixer of the chamber module has a double-support design, wherein the upper support is a rolling bearing and the lower support is a sliding bearing. |
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Bromated and epoxidated flame retardants Invention relates to bromated and epoxidated organic compounds which are flame retardants for polymers, such as polystyrene. Disclosed is a bromated and epoxidated organic compound having molecular weight of at least 1500, wherein bromine atoms are directly bonded to aliphatic carbon atoms, wherein the bromated and epoxidated organic compound is a bromated and epoxidated homopolymer of butadiene or a bromated and epoxidated ester of polyol and one or more fatty acids, and has bromine content of at least 35 wt %, and at least one oxirane group per molecule, and where the bromated and epoxidated organic compound has a 5% weight loss temperature of at least 180°C. Also disclosed are versions of the method of producing a bromated and epoxidated organic compound and an organic polymer composition. |
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Polyester polyols from terephthalic acid and oligoalkylene oxides Invention relates to a polyester polyol, a method for production thereof and to use thereof to produce rigid foam materials from polyurethanes/polyisocyanurates. The polyester polyol with concentration of ether groups between 9.0 mol/kg polyester polyol and 16 mol/kg polyester polyol is obtained from a mixture containing: A) terephthalic acid (A), B) oligoethylene glycol of formula H-(OCH2CH2)n-OH with an average number of oxyethylene groups n between 3.0 and 9.0, and C) at least one aliphatic dicarboxylic acid selected from a group consisting of succinic acid, glutaric acid, adipic acid, sebacic acid, suberic acid, azelaic acid, decane dicarboxylic acid, dodecane dicarboxylic acid and omega-hydroxycaproic acid. |
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Polyester polyols from isophthalic acid and/or terephthalic acid and oligoalkylene oxides Invention relates to a method of producing polyester polyol with concentration of ether groups between 9.0 mol/kg polyester polyol and 22 mol/kg polyester polyol, use of the polyester polyol obtained using said method, a method of producing PUR- or PUR/PIR foam plastic based on polyester polyol, as well as use of said PUR- or PUR/PIR foam plastic. The method of producing polyester polyol includes (i) at the first step (A) isophthalic acid, optionally in form of an alkyl ether with 1-4 carbon atoms in the alkyl, and/or terephthalic acid, optionally in form of an alkyl ether with 1-4 carbon atoms in the alkyl, reacts with (B) an oligoethylene glycol of formula H-(OCH2CH2)n-OH with an average number of oxyethylene groups n between 3.0 and 9.0 in the presence of at least one catalyst selected from a group consisting of tin (II) salts, bismuth (II) salts and titanium tetraalkoxylates, at temperature between 160°C and 240°C and pressure between 1 and 1013 mbar for 7 to 100 hours, and (ii) at the second step, the reaction mixture obtained at step (i) reacts with (C) phthalic acid and/or phthalic acid anhydride. |
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Aromatic block-copolyetherketones Claimed invention relates to aromatic block-copolyetherketones. Described are aromatic block-copolyetherketones of formula: , where n=1-20; m=2-50; z=2-10 as construction and film materials. |
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Oligoester as coating composition component Described is an oligoester of general formula: , where R is a compound of formula n is an integer from 1 to 3, m is equal to 1 or 3, k is equal to 4 or 8, as a coating composition component. |
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Present invention relates to high-molecular weight compounds, particularly block copolyesters. Described are block copolyesters of formula where n=1-20; m=2-50; z=2-30. |
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Polyether polycarbonates of oligolactic acid Described are polyether polycarbonates of oligolactic acid of formula: where R=(CH2)2O-(CH2)2; (CH2)4; n=13-24; m=9-13. |
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Method of modifying surface of polyethylenterephalate film Invention relates to a method of modification of a polyetheleneterephalate (PET) film surface by functional additives and can be applied in the production of containers, packing, fibres and tribotechnical products. The method of modification of the polyetheleneterephalate film surface includes processing the surface with a modifier - 1,1,3- trihydroperfluoroepropanol-1 with heating in an ethanol medium, at a temperature of 40°C and frequency of ultrasound 40 kHz for 2 h. |
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Method of obtaining polyester polyols with small amount of dioxane wastes Claimed invention relates to obtaining and application of polyester polyols. described is method of obtaining polyester polyols, in which : at stage a) mixed are at least, one anhydride of carboxylic acid (A), selected from group, consisting of phthalic anhydride, trimellitic acid anhydride and pyrromellitic acid anhydride, and diethyleneglycol (B), and subjected to interaction, with molar ratio of components (B) to (A) being within the range from 1.5:1.0 to 0.7:1.0; total content of components (A) and (B) counted per the weight of all mixture components is within the range from 66 to 90 wt %, and at stage b) diethyleneglycol (B) is added to polyester polyol from stage a), with polyester polyol from stage a) has higher molecular weight than polyester polyol from stage b), polyester polyol from stage a) has molecular weight in the range 1400 and 430 g/mol and hydroxyl number in the range between 80 and 260 mg KOH/kg, polyester polyol from stage b) has molecular weight in the range 750 and 350 g/mol and hydroxyl number in the range between 150 and 320 mg KOH/kg, and at stage a) added is, at least, one other glycol (C) with 2-4 carbon atoms except diethyleneglycol and, at least, one aliphatic dicarboxylic acid (D) with 5-12 carbon atoms, and number of components (C) and (D) at stage a) is selected such that quantity of components (A), (B), (C) and (D) in mixture constitutes 100 wt %. Also described is method of obtaining foam polyurethane (PUR) or foam polyisocyanurate (PIR) styrofoams, including stages: a) interaction of polyester polyol, obtained by claimed method, with b) polyisocyanate-containing component, c) foaming agent, d) one or several catalysts, e) if necessary, with fire retardant and/or other auxiliary substances and additives. Described is application of foam polyurethanes (PUR) or foam polyisocyanurates (PIR), obtained by said method for obtaining metal-containing laminated composite materials. Described is metal-containing laminated composite element, including metal layer and layer, containing PUR- or PIR-styrofoam, obtained by method described above. |
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Method of producing catalyst for polymerisation of lactones or polycondensation of alpha-oxyacids Disclosed is a method of producing a catalyst by reacting tin metal with oxyacids, wherein catalyst synthesis is carried out in a melt or solution of oxyacids in the presence of oxidising agents at temperature of 20-240°C while stirring constantly. The oxidising agents used are air or molecular oxygen or hydrogen peroxide or organic hydroperoxides. The α-oxyacids used are compounds with ratio of hydroxyl to carboxyl groups in the range of 1(3):3(1). Condensation of oxyacids with removal of the released water can be carried out concurrently or consecutively with catalyst synthesis. |
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Method of producing catalyst includes treating antimony trioxide with a polyfluorinated alcohol selected from 1,1,3-trihydroperfluoropropanol-1, 1,1,5-trihydroperfluoropentanol-1, 1,1,7-trihydroperfluoroheptanol-1 and 1,1,9-trihydroperfluorononanol-1, in molar ratio of 1:6, respectively, at temperature of 180°C, ultrasonic frequency of 40 kHz for 6 hours. The method of producing oligo- and polyethylene terephthalates is carried out by polycondensation of terephthalic acid and ethylene glycol while heating in the presence of the obtained catalyst. |
Another patent 2550827.