The method of receiving polyhexamethylene
(57) Abstract:Purpose: polihexanide as black polymer pigment for black Glubokoye enamels. The inventive method of obtaining polyhexamethylene based on polycondensation of tetranitride pyromellitic acid with p-phenylenediamine and salts of cobalt at a molar ratio of components tetranitro pyromellitic acid : p-phenylenediamine: salt of cobalt = 1: 2: 0,5, respectively, in two-stage introduction of the components into a reaction equal shares, in the environment of phenol at 160-180oC in an atmosphere of inert gas under stirring until the termination of allocation of ammonia. The coatings obtained using the new pigment, have high optical characteristics. table 1. The invention relates to the field of technical chemistry section of polymeric materials, and more specifically to a method for producing cobalt containing crosslinked polyhexamethylene.The invention can most effectively be used as a black polymeric pigment for black Glubokoye enamels class True absorbers with high heat, heat and corrosion resistance. The resulting coatings can byteline apparatus, in optical devices, where necessary black, not giving a glare to the details.Famous black globorotalia enamel, in which the pigment is used carbon black (1,2)
Polymer black pigments are not described in literature.A method of obtaining polyhexamethylene policemanila different tetranitride and diamines at elevated temperatures in a stream of inert gas (3). The color of these polymers varies from yellow to brown, and therefore they cannot be used as black pigments.The closest to the essence of the proposed method is a method of obtaining polyhexamethylene by polycondensation of tetranitride pyromellitic acid with p-phenylenediamine in the phenol in acidic medium at 120-180oC in an atmosphere of inert gas (4).However, the use of a polymer obtained by the method prototype, as the pigment is not possible to obtain enamel with the required optical properties: absorption and emission of solar radiation more than 0.9, and the coefficients of diffuse and specular reflection less than 2.5.The present invention was to obtain a polymeric material which radiation solar radiation, exceeding 0.9 and coefficients of diffuse and specular reflection less than 2.5.It turned out that the proposed method of producing crosslinked cobalt containing polyhexamethylene allows you to get structured polymer pigment with a highly developed chain pairing of the formula:
< / BR>and fine structure (particle size of 30-60 μm). These properties determine the possibility of obtaining black Glubokoye enamels class "True sinks with high coefficients of absorption of solar radiation, diffuse and specular reflection.The method of obtaining the proposed polyhexamethylene is that the polycondensation of tetranitride pyromellitic acid, p-phenylenediamine and cobalt salts (chloride, acetate, acetylacetonate), taken in a molar ratio of 1:2: 0.5, it is carried out under vigorous stirring in phenol at 160-180oC. in an inert atmosphere at a two-stage introduction of the components in the reaction: initially charged to the reactor phenol and half of the reacting substances (concentration of 0.15 to 0.25 mol /l) and carry out the reaction until the termination of allocation of ammonia, then add the second half of the reacting substances and continue the reaction until the termination of excretion of ammonia.oC and maintained at this temperature until the termination of excretion of ammonia. Then the reaction mixture is make more of 8.25 g of chloride, 16 g of p-phenylenediamine, 13 g of tetranitride pyromellitic acid and continuing the reaction until the termination or sharp slowdown excretion of ammonia. Upon completion of the reaction, precipitated precipitated polymer is filtered off, washed with alcohol, extracted with alcohol in the apparatus of Soxlet within 24 hours, dried in vacuum over sulphuric acid. The weight of the polymer 50g Examples 2, 3 and 4 see table.Using the proposed method allows to get the black polymeric pigment for thermo-, heat - and corrosion-resistant black Glubokoye enamels. Coatings based on it have high optical performance: absorption of solar radiation and the emissivity in the same area of 0.96-0.99 are equivocal when the ratio of the coefficients close to unity. The coefficients of diffuse and specular reflection 2-2,2. The method of receiving polyhexamethylene by polycondensation of the gas, characterized in that the reaction is additionally injected salt of cobalt at a molar ratio of tetranitride pyromellitic acid, p-phenylenediamine and salts of cobalt, which is 1:2:0,5 respectively, and the process is conducted under stirring until the termination of allocation of ammonia in two-stage mode, when the initial reactant concentrations equal to 0.1 to 0.15 m/L.
FIELD: organic chemistry, chemical technology, polymers.
SUBSTANCE: invention relates to polymers comprising pyrrole fragments in the main chain that can be used in making thermostable fibers, films, adhesion materials and other articles for electronic and semiconductive industry, and to a method for their preparing. Polypyrrole polymer comprises an elementary link of the following structure: wherein Ar means ; ; M means bridge groups: -O-; -CH2-. Method for preparing polypyrrole polymer involves firstly carrying out the polyheterocyclization reaction of aromatic diketoxime and diethynyl arene that are taken in the equimole ratios. Reaction is carried out at temperature 120°C for 3 h in dimethylsulfoxide/KOH medium. Before precipitation of polymer tetrabutyl ammonium bromide is added to the reaction mixture in the ratio diketoxime : tetrabutyl ammonium bromide = 1:0.1 mole and methylene chloride in the ratio diketoxime : methylene chloride = 1;10 mole. Reduced viscosity value of prepared polymers is 0.35-0.5 dl/g. Invention allows creating new polymers possessing valuable properties complex and soluble in organic solvents.
EFFECT: improved preparing method, valuable properties of polymers.
3 cl, 4 ex
FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for synthesis of copolymers of pyridine or methyl-substituted pyridine with vinyl epoxy-compounds. Method involves heating pyridine or methyl-substituted pyridine at 50-145°C for 2-7 h with vinyl epoxy-compound in the mole ratio of reagents from 1:1 to 10:1. Also, invention relates to coupled copolymers of pyridines synthesized by above indicated method of the general formula: wherein R1 means hydrogen atom (H), 2-, 3-, 4-CH3; R2 means -CH2O(CH2)2OCH=CH2, or R2 means -CH2OCH2CH=CH2. Synthesized polymers possess electric conducting and paramagnetic properties. The parent compounds are easily available.
EFFECT: improved method of synthesis.
4 cl, 12 ex
FIELD: polymer materials.
SUBSTANCE: invention relates to a method of producing polymer material from polymers or composition containing polymers being mixtures of fusible ethers of oligotriazine with 4-18 rings having linear and branched structures. Invention further relates to polymer material and application thereof, to products in the form of finished articles, and to a method of fabrication thereof. Method of preparing polymer material comprises condensation of aminotriazine ethers having following structure: , where R1 represents R4-O-CHR3-NH- or [R4-O-CHR3]2N-; R2 represents -NH2, -NH-CHR3-OR4, -N[CHR3-O-R4]2, -CH3, -C3H7, -C6H5, -OH, phthalimido, or succinimido; and R3 is H or C1-C-7-alkyl, to form polymer in the form of fusible oligotriazine ethers having following structure: . Polymer material may contain up to 75 wt % of fillers and/or reinforcing fibers, ethylene copolymers, maleic anhydride copolymers, modified maleic anhydride copolymers, polymethacrylates, polyamides, polyesters and/or polyurethanes, and up to 2 wt % stabilizers, UV absorbers and/or supplementary agents. Method of producing products in the form of profiled pieces, sheets, swelled material sheets, tubes, laminates, parts, strands, or fibers consists in melting polymer material and further processing thereof by conventional manners suitable for thermoplastic polymers: calendaring, jet molding, extrusion, and the like.
EFFECT: enabled production of polymer material soluble in polar solvents such as C1-C10-alcohols, dimethylformamide, or dimethylsulfoxide and manufacturing of products with good mechanical characteristics.
26 cl, 11 ex
SUBSTANCE: invention refers to method of producing heat-resistant heterocyclic polymers to be used as binding agents for heat-resistant black-reinforced, glass-reinforced and organoplastics, as a base for glues, sealants, caulking compounds, paint films. Aromatic bis-o-cyanamine reacts with 4,4'-(m-phenylendioxy)diphthalonitrile at temperature 160±2°C. 4,4'-(m-phenylendioxy)diphthalonitrile is introduced by cycles. Bis-o-cyanamine is 1,3-bis(3-cyano-4-aminophenoxy)benzene, or 3,3'-dicyano-4,4'-diaminodiphenylmethane, or 3,3'-dicyano-4,4'-diaminodiphenyloxide.
EFFECT: invention allows developing economical method of producing heat-resistant heterocyclic polymers, reducing possibility of collateral reactions, improving physical-mechanical properties of polymers.
1 tbl, 4 ex
SUBSTANCE: method is described for producing electrocatalytic composition based on polypyrrole, involving polymerisation of pyrrole in the presence of platinised soot and surface-active additive, wherein the process is carried out under the effect of a radical initiator in an organic solvent at temperature of approximately 0°C, where the radical initiator is dicyclohexylperoxy dicarbonate, the surface-active additive is a product from reacting tertiary amine (CH3)2NR (R - aliphatic residue C12-14) and propylene oxide in ethyl cellosolve, containing an ionic component - quaternary ammonium base (CH3)2RN+R1(OH)-, where R1- propylene oxide oligomers and a nonionic component - propylene oligomers, and the organic solvent is ethyl cellosolve. After mixing, the components the mixture undergo vacuum treatment at 10-2 mm Hg, and during the initiation process, the system is exposed to an acoustic field with frequency 20 to 22 kHz. Polymerisation process of pyrrole is carried out until obtaining an electrocatalytic composition system which is soluble in organic solvents. In this process electrocatalytic composition is obtained, with the following ratio of said components, wt %: pyrrole 15 to 17; platinised soot 6 to 8; surface-active additive 8-10; dicyclohexylperoxy dicarbonate 5-7; ethyl cellosolve - the rest.
EFFECT: design of an efficient method of producing electrocatalytic composition based on polypyrrole.
2 cl, 2 ex
SUBSTANCE: present invention relates to a method of producing tetrazole-containing copolymers, having physiological and catalytic activity, as well as high power capacity. Said copolymers can be used to prepare prodrugs, chemical current sources, catalyst systems, as well as energy-intensive binding components of gas-generating systems and special-purpose blasting powder. Method of producing tetrazole-containing copolymers involves mixing hydroxyl-containing high-molecular compounds in dimethyl formamide with acrylonitrile and a catalytic amount of sodium hydroxide, heating the reaction mixture to temperature 50-60°C, adding a suspension of sodium azide and ammonium chloride in dimethyl formamide and then carrying out the reaction at temperature 100-110°C.
EFFECT: obtaining novel copolymers based on hydroxyl-containing high-molecular compounds, having valuable physical and chemical properties and high energy intensity with low sensitivity to mechanical and thermal loads.
2 cl, 1 tbl, 3 ex
SUBSTANCE: prepreg contains the following (wt %): adhesive epoxy composition (30-60) and carbonaceous filler (40-70) treated with epoxy finishing agent based on bundles having not more than 2 twists per metre, linear density of 100-72000 tex and consisting of elementary fibres with strength of 3000-4500 MPa.
EFFECT: prepreg has high tensile, compression and shearing strength and high impact resistance of the article made from said prepreg.
3 cl, 2 tbl, 4 ex
SUBSTANCE: invention relates to the field of production of a liquid thermosetting oligomer on the basis of 2,2-bis(4-cyanatiphenyl)propane modified with a polysulfide rubber used as a filling or impregnation compound, and also a polymer base of a binder for structural glass-fibre plastics of electrotechnical purpose. A liquid oligomer is proposed based on dicyanogen ether of diphenyl propane produced by thermal oligomerisation of 2,2-bic(4-cyanatophenyl)propane (70-90 wt parts) in the presence of a modifying additive - a polysulfide rubber of thiocol II-NT (10-30 wt parts).
EFFECT: higher pot life and phase resistance of oligomer down to negative temperatures for increased reliability of polymer electric insulation.
1 cl, 1 tbl, 5 ex
SUBSTANCE: method consists of two steps, where at the first step, starting bisphenol A reacts with a cyanuric halide (cyanuric chloride or cyanuric bromide) to form a bisphenol A monocyanate prepolymer, and at the second step, the bisphenol A monocyanate prepolymer reacts with a cyan halide (cyan chloride or cyan bromide) to obtain the desired bisphenol A cicyanate prepolymer.
EFFECT: disclosed method enables partial replacement of the hazardous and poisonous cyan halide with much less hazardous cyanuric halide and also avoid the use at the second step of high temperatures and metal-containing polymerisation catalysts which cut the storage life of the bisphenol A cicyanate prepolymer.
SUBSTANCE: invention relates to production of binder for polymer composite materials, used to make structures based on carbon fibre filler with operating temperature of 200-400°C, and can be used in aircraft, aerospace, motor car and ship-building and other industries. The polymer binder for composite materials consists of, pts.wt: tetranitrile of aromatic tetracarboxylic acid 100, polyester imide thermoplastic 2-10, amine curing agent 2-6. Also disclosed is a prepreg containing the disclosed polymer binder and fibre filler, with the following ratio of components, wt %: polymer binder 30.0-40.0, fibre filler 60.0-70.0. The fibre filler used is glass fibre or carbon fibre filler.
EFFECT: making high-strength articles at high temperature.
3 cl, 3 tbl
FIELD: chemistry of polymers, leather industry, chemical technology.
SUBSTANCE: invention relates to a method for preparing polymeric products that are used in processes for dressing leather or fur, in treatment and disinfection of natural and sewage waters. Method for preparing polymeric products involves the hydroxymethylation reaction of polyhexamethylene guanidine chloride with formaldehyde and arylation reaction of prepared product with aromatic compound comprising o-amino- or o-hydroxy-groups. The hydroxymethylation reaction is carried out in the presence of acetic acid or formic acid up to formation of trimethylol derivative of polyhexamethylene guanidine chloride. In some cases the arylation product is subjected for complex formation with transient metal salt or azo-coupling reaction with diazonium salt taken among group including sulfanilic acid, naphthionic acid, j-naphthyls, p-nitroaniline, 2,6-dichloro-4-nitroaniline. Invention provides simplifying, accelerating and enhancing the effectiveness of process in dressing leathers with derivatives of polyhexamethylene guanidine showing tanning effect, staining properties, flocculating capacity and high antibacterial activity.
EFFECT: improved preparing method.
3 cl, 1 tbl, 9 ex
FIELD: nonferrous metallurgy industry; aircraft industry; other industries; production of the heat-resistant alloys on the basis of the nickel.
SUBSTANCE: the invention is pertaining to the dispergated coloring agents intended for the ink-jet recording. The invention describes the dispergated coloring agent containing the coloring agent and the pseudo-finely-dispergated particles of the polarizable polymer having the dimension less, than the particles of the coloring agent. In the dispergated coloring agent the coloring agent itself and the particles of the polarizable polymer are attached to each other. At that the pseudo-finely-dispergated particles of the polarizable polymer contain the interpolymer consisting of the monomeric components containing, at least, one type of the hydrophobic monomer and, at least, one type of the hydrophilic monomer, where the hydrophobic monomer contains, at least, the monomer having the methyl group in α - position and the radically-polymerizable non-saturated double bond. The invention also describes the method of production of the indicated dispergated coloring agent and the water ink produced on its basis. The presented dispergated coloring agent has the high stability for a long time and practically in the absence of the surface-active substance or the dispergator. The ink produced on its basis has stability of blowout in the ink-jet printing method.
EFFECT: the invention ensures, that the ink produced on the basis of the presented dispergated coloring agent has the high stability of blowout in the ink-jet printing method.
20 cl, 14 dwg, 7 tbl, 15 ex
SUBSTANCE: present invention pertains to new photochromic monomers
Alk=CH3-C10H21 X=Cl, Br, I, F, NH2, CH2OH, CH2Cl, CH2Br, CHO, CO2H, method of obtaining them, photochromic polymers- polyazomethines, which are reversibly photocontrolled due to introduction into their structure, of dihetarylenthane class photochromic fragments.
EFFECT: obtaining new photochromic photocontrolled polymers for designing new information technologies.
8 cl, 25 dwg, 15 ex
SUBSTANCE: present invention relates to a method of marking materials with coded microparticles. Described is a method of marking materials with coded microparticles, characterised by that the coded microparticles used are obtained (i) through polymerisation of at least one water-soluble monoethylene unsaturated monomer in the presence of at least one ethylene unsaturated monomer containing at least two double bonds in a molecule, through reverse suspension polymerisation of water in oil, where the suspension agent used is doped nanoparticles, or (ii) emulsion polymerisation of water-insoluble monoethylene unsaturated monomers containing 0-10 wt %, in terms of the mixture of monomers, of at least one ethylene unsaturated monomer containing at least two double bonds in a molecule, where the emulsifying agent for stabilising the dispersion phase is in form of doped nanoparticles, or (iii) polymerisation of at least one ethylene unsaturated monomer and a copolymerisable dye containing an ethylene unsaturated double bond and, if needed, agglomeration of these particles, where during polymerisation in accordance with (i) and (ii), nanoparticles used are radioactively doped or doped with at least one dye and one compound from the group of rare-earth elements of the periodic table. Described also are materials containing coded microparticles for marking, obtained using the described method. The invention describes use of coded microparticles obtained using the described method.
EFFECT: novel method of marking materials.
14 cl, 1 tbl, 14 ex
SUBSTANCE: the invention relates to polymer colouring agents used in coating compositions to protect the image forming layer of the offset plates. Described are a new water-soluble polymer colouring agent with the absorption band ranging from about 300 nm to about 600 nm, and a coating composition for a thermographic offset plate which comprises: (a) the said polymer colouring agent with the absorption band ranging from about 300 nm to about 600 nm, and (b) organic microparticles which contain cross-linked copolymers of acrylate ot methylacrylate and styrole, 2-hydroxymethylacrylate, methacrylate, poly(oxyethylene)methacrylate or a linear or branched alkylmethacrylate; or inorganic nanoparticles containing silicone oxide or aluminium oxide. Described is the thermographic offset plate for reverse printing, containing (a) water receptive plate, (b) a layer positioned on the plate which forms the image in the near-infrared region, and (c) the coating layer which is positioned on the image-forming layer and contains the said coating composition.
EFFECT: reduction or elimination of background filling of the offset plates in the conditions of white light, elimination of the need to use separating paper when packaging offset plates.
7 cl, 10 dwg, 13 ex
FIELD: physics, optics.
SUBSTANCE: invention relates to visible light absorbers, particularly novel azo compound monomers, particularly suitable for use in materials for implantable ophthalmic lens materials. The ophthalmic device material includes an azo compound, a device forming acrylic monomer and a cross-linking agent. The ophthalmic device is made from the ophthalmic device material and is in the form of intraocular lenses, contact lenses, keratoprostheses and corneal inlays or rings.
EFFECT: azo compounds are suitable for use as monomers which absorb part of the visible light spectrum (about 380-495 nm).
17 cl, 6 dwg, 3 tbl
SUBSTANCE: invention relates to material for an ophthalmic device, comprising: a) a UV/visible light absorbent of Formula A or Formula B:
where R1=H, CH3, CH2CH3 or CH2OH; R2=C1-C4 alkyl or C1-C4 alkoxy; R3=H, CH3, CH3O, F, Cl, Br, I or CF3;
where X=C3-C4 alkenyl, C3-C4 alkyl, CH2CH2CH2SCH2CH2 or CH2CH2CH2SCH2CH2CH2; Y= is absent, if X=C3-C4 alkenyl, in another case Y=-O-C(=O)-C(R1)=CH2, -O-C(=O)NHCH2CH2OC(=O)-C(R1)=CH2 or -O-C(=O)NHC(CH3)2(C6H4)C(CH3)=CH2; R1=H, CH3, CH2CH3 or CH2OH; R2=C1-C4 alkyl; and R3=H, CH3, CH3O, F, Cl, Br, I or CF3; and b) a blue light chromophore; and c) polymer material which forms the device, where the UV/visible light absorbent is used in concentration not higher than 4.0% in the material, and demonstrates less than 10% light transmission at wavelength of 440 nm. The invention also relates to an implantable ophthalmic device.
EFFECT: obtaining materials for an ophthalmic device which enable to cut off blue and ultraviolet colour at low UV concentrations.
17 cl, 4 dwg, 2 tbl, 2 ex
SUBSTANCE: invention relates to azocompounds, corresponding to general formula, represented below, in which R1 represents C(O)C(CH3)=CH2;R2 represents H; R3 represents C1-C4alkyl or XOC(O)C(CH3)=CH2; X represents C1-C4alkyl. The invention also relates to material for ophthalmological device, which contains said azocompound, to ophthalmological device, made of said material, and intraocular lens, made of material that includes azocompound.
EFFECT: azocompounds, absorbing visible radiation, which are capable to copolymerisation with other compounds in materials for ophthalmological devices.
11 cl, 5 dwg, 5 tbl, 8 ex
FIELD: pulp and paper industry.
SUBSTANCE: invention relates to production of a dye with a starch component, which can be used in pulp and paper industry. Method of producing a dye with a starch component includes production of the starch component from a group of native starch or modified starch and its further reaction with an organic dye using mechanical mixing with the weight ratio of 1:1 or 1:2 respectively or adding 15-20 wt% of the dye to 5-10 % of the starch component suspension after correcting pH with subsequent spray drying. Dye is selected from any class of organic dyes.
EFFECT: obtained starch-containing dye has improved adhesion properties and improved consumer properties due to providing simultaneous colouring in a wide range of colors and surface glueing of the paper.
1 cl, 4 ex
SUBSTANCE: invention relates to quaterrylene and/or terrylene dyes covalently bonded with a polymer, intended for use in printing ink. Described is a method of increasing solubility and/or dispersibility quaterrylene and/or terrylene dye in liquid medium. Method involves covalent bonding of said dye and polymer, soluble in said liquid medium. Said polymer contains phenol resin, in which phenol fragments are substituted with C1-C10-alkyl. Invention also describes printing ink composition containing polar liquid medium, in which is dissolved or dispersed at least one said polymer-covalently bonded quaterrylene and/or terrylene dye, and obtained using composition marking or protective element.
EFFECT: invention provides higher solubility and/or dispersibility of quaterrylene and/or terrylene dyes in printing ink liquid medium and possibility of using said dyes for authenticating articles.
18 cl, 6 tbl, 2 ex