The method of obtaining models moulds |
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IPC classes for russian patent The method of obtaining models moulds (RU 2073028):
The method for obtaining solutions of linear polyurethanes / 2050373
The invention relates to the field of synthesis of polyurethanes in solution of organic solvents and intended for artificial skin, finishing materials during chemical cleaning, as the polymer layers of semi-permeable gas diffusion materials (membranes), coatings on fabrics in the manufacture of composite materials for various purposes, as a binder in the manufacture of printing inks, sealants, insulating materials in construction, electronics, electrical engineering and t
 Catalytic system suitable for the manufacture of polyurethane coating composition for producing polyurethane coating, the method of obtaining / 2024553
The invention relates to the field of synthesis of polyurethane curable coatings using catalysts and can be used in paint industry
 The method of extrusion of composite structures with variable thickness / 2043925
The invention relates to manufacturing techniques by pressing structural products made of composite material of variable thickness and can be used in shipbuilding, aircraft and other industries of national economy
 Injection mold for thermoplastic / 2015903
The invention relates to the processing of thermoplastics by injection molding
Method of obtaining chemically stable press-moulds and instruments / 2543871
Claimed invention relates to method of obtaining press-moulds, two-component hardening composition, applied in said method, and to application of said hardening composition for manufacturing seamless press-moulds and instruments. Technical result is achieved by method of obtaining instrument or press-mould, which includes application of seamless modelling paste, containing polymer system (a) and hardening system (b) on substrate with formation of continuous film of hardening substance, hardening of seamless modelling paste at temperature 20-60°C to realise complete reaction, mechanical processing of hardened seamless modelling paste with obtaining instrument or press-mould. Polymer system (a) contains epoxy resin (a1), which has average quantity of epoxy functional groups ≥3, selected from polyfunctional glycidylamines, and hardening system (b), containing amine compound (b1), which has average quantity of amine functional groups ≥4, selected from polyalkylenepolyamines.
Self-crossing dispersion for dressing glass-fiber on the basis of polyurethane, polyurethane-polyurea or polyurea, a method of its production and a sizing compound for the glass-fiber on its basis / 2252942
The invention is pertaining to the field of the self-crossing dispersion for dressing of glass-fiber on the basis of polyurethane, polyurethane-polyurea or polyurea used for dressing glass-fiber. The invention is also dealt with a method of production of the indicated dispersion and with a sizing compound for glass-fiber. The indicated dispersion contains the blocked isocyanate groups bound with the polymer and in addition the reaction-capable hydroxyl or amino groups bound with the polymer. The dispersion is stable at storing up to 50 °C and is self-crossing at the temperature of 90°C up to 280°C. The dispersion represents a reaction product - a) at least one polyolic component; b) at least one di-, tri- and / or a polyisocyanate component, c) at least one hydrophilic nonionic or a (potentially) ionic component; d) at least one component, which is distinct from a)- or b)-, having molecular mass - 32-500 and at least one isocyanate-reaction capable group; and e) at least one monofunctional blocking component. The offered dispersions are suitable for use in the capacity of coatings for mineral emulsion carriers, textile and leather, lacquers and polishes for wood, and also may be applied as paint primers, bases, joint fillers or finishing coatings.
 Method of producing rigid filled polyurethane foam / 2257393
Rigid filled polyurethane foams are prepared by reaction of hydroxyl-containing component A, polyisocyanate component B with 29-33% of NCO groups, and liquid glass as inorganic filler (C) possessing modulus 4 and density 1.3-1.5 g/cm3 in amount 50-150 wt parts per 100 wt parts of sum of A and B components, reaction being carried out in presence of special additives. According to invention, liquid glass is potassium liquid glass and A, B, and C components are mixed simultaneously using counter-jet technique in mixing head of three-component of priming machine under pressure 15-22 MPa. Thus obtained polyurethane foams are inflammable and show compaction strength up to 0.73 MPa at 10% deformation, heat conductivity 0.025 W/m K at 25°C, heat resistance up to 265°C, and moisture absorbance about 0.02 kg/m2. The foams can be employed in manufacture of heat-insulation materials for needs of construction and refrigeration engineering as well as in mechanical engineering.
 Resin based on ramified hydroxyl-functional polyester and utilization thereof in aqueous crosslinking compositions / 2265620
Invention relates to polyester-based resins and utilization thereof in two-component compositions and water-based coating compositions and provides a resin based on ramified hydroxyl-functional polyester with average hydroxyl functionality >2, hydroxyl number 25-300 mg KOH/g and average number molecular mass 500-3000, which resin contains poly(alkylene oxide) groups and optionally sulfonate groups. Resin is characterized by that it contains reaction product of (i) carboxylic acid mixture containing 50-80 mol % m- and/or p-aromatic and/or cycloaliphatic monocarboxylic acid containing more than 6 carbon atoms and, optionally, acid containing three or more functional groups; and (ii) alcohol mixture including aliphatic diol containing at least 4 carbon atoms, C1-C4-alkoxypolyalkyleneoxyde glycol and/or C1-C4-alkoxypolyalkyleneoxyde-1,3-diol with average number molecular mass 500-3000 and, optionally, polyatomic alcohol containing 3 or more functional groups. Resin is further characterized by carboxylic number ≤20 mg KOH/g (less than 0.357 mequ COOH groups per 1 g polymer) and, optionally, sulfonate number ≤4 mg KOH/g (less than 0.070 mequ sulfonate groups per 1 g polymer), wherein acid groups are at least partly neutralized. Resin is used as a base for preparing aqueous dispersion, aqueous cross-linkable binding composition, and aqueous coating composition.
Method of production of fireproof polyurethane foam / 2268899
Proposed method includes interaction of composition containing polyether polyol, polyisocyanate, expanded graphite, amine activator-stabilizer, foaming agent (water or freon) and modifying agent: multi-atom alcohols and melamine cyanurate. Prior to interaction of polyether polyol with polyisocyanate, polyether polyol is mixed with amine activator, stabilizer, modifying agent and foaming agent; then expanded graphite and melamine cyanurate are added at ratio of 1-2 : 1 in the amount of 15-30 mass-% of total amount of components. Said composition contains additionally phosphate antipyren trichloroethyl phosphate. Proposed method enhances fire-retarding quality of polyurethane foam at retained physico-chemical characteristics (apparent density 45 kg/m3, breaking stress at compression of 330 kPa, heat conductivity coefficient 0.025 W/m2 and heat absorption of 1.0% per 24 h) characterizing heat- and sound-insulating properties.
 Ionomer thermoplastic polyurethane / 2272817
Invention relates to ionomer thermoplastic polyurethane, method for preparation thereof, use of indicated ionomer thermoplastic polyurethane to prepare aqueous dispersions thereof, as well as to a method for preparing aqueous dispersions of ionomer thermoplastic polyurethanes. Ionomer thermoplastic polyurethane is prepared via continuous reaction of (i) 4-50% if diisocyanate; (ii) 35-95% of bifunctional polyatomic alcohol selected from group comprising (a) polycaprolactone with mean molecular mass between 500 and 15000 and general formula I:
 Fire-resistant polyurethane foam production process / 2296777
Invention relates to production of polyurethane foam used in vehicles, construction, and other fields where heat- and acoustic-insulation materials are required. Process comprises following operations: mixing polyetherpolyol with amine activator, polyatomic alcohol, and foaming agent; adding preliminarily prepared mixture of expanded graphite, melamine cyanurate, and gypsum in amount 5 to 50 % by weight based on the total amount of components; and adding polyisocyanate. Expanded graphite is mixed with melamine cyanurate at ratio (1-2):1 and in summary amount corresponding to 15-30 % by weight on the total amount of components. Foaming agent utilized is water or Freon. Composition may further contain trichloroethyl phosphate as fire-retardant additive.
 Stabilized water dispersions of curing agent / 2324707
Scope of invention covers stabilized water dispersions of curing agent suitable for coating preparation. Dispersion dispersed in water contains the following components: A1) at least one organic polyisocyanate with isocyanate groups connected in aliphatic, cycloaliphatic, araliphatic and/or aromatic manner, A2) ionic or potentially ionic and/or non-ionic substance, A3) blocking agent, B) stabilizer containing a) at least one amine with structural element of common formula (I)
Method of production of fire resistant filled polyurethane / 2336283
Invention relates to method of production of fire-resistant foampolyurethane basing on composition, which includes polyetherpolyol, polyisocyanate, extended graphite, amine activator, frothing agent - water or Freon, melamine cyanurate and glycerin, polyethrpolyol in interaction with polyisocyanate is preliminary mixed with amine activator, glycerin, frothing agent and mixture, composed of extended graphite, melamine cyanurate and phosphogypsum as modifying agent, with ratio (1-2):(1-2):1 respectively, phosphogypsum being introduced in amount from 30 to 50 wt % from total amount of components. Foanpolyurethane, produced by means of claimed method, has high fire-resistance, preserving heat-insulating and soundproof properties, higher strength indices, and is more economically profitable, as contains as part of its composition cheaper mineral filler, namely phosphogypsum, which is waste product of phosphoric acid and phosphate fertilizers production. Such foampolyurethane can be applied in transport, construction and other branches of industry, where heat- insulating and sound-proof materials are required.
 One-component systems for covering / 2353628
Invention relates to water one-component systems for covering, which are used in glue compositions, in sealants, lacquers and size. Said systems contain (I) at least one polyurethane (A), which contains chemically bound hydrophilic groups, and, in which groups containing active by Tzerevitinov hydrogen atoms are present in amount from 0 to 0.53 mmole/g in terms of relative content of non-voletile dispersion components, (II) at least one blocked polyisocyanate (B), which does not contain hydrophilic groups, and (III) water, weight component ratio between components A and B being chosen in such way that content of blocked isocyanate constitutes from 0.01 to 1.0 mole per 100 g of hard resin. Also described are method of obtaining said systems, their application in sizes for glass fibre, method of obtaining from them covering on carriers, as well as carriers with applied on them preparations for covering, containing systems for covering of composition described above.
Fluoro-hydrocarbon compositions / 2395539
Present invention relates to compositions for foaming foam plastic used in insulation materials at low temperatures. The said composition ontains 1,1,1,3,3-pentafluorobutane (HFC - 365mfc) and 1,1,1,3,3-pentafluoropropane (HFC-245fa) with mass ratio HFC-365mfc/HFC-245fa between 65:35 and 73:27.The invention also relates to a premix for producing foamed polyurethane or modified foamed polyurethane which contains such a foaming composition, at least one polyol and a catalyst for reaction of isocyanates and polyols. The invention also describes a method of producing foamed polyurethane or modified foamed polyurethane using the disclosed foaming composition, as well as heat insulation material which contains foamed polyurethane or modified foamed polyurethane made using the said method. When prepared systems are used completely, the foaming composition does not have an ignition point, which provides safe production of (modified) foamed polyurethane.
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(57) Abstract: The inventive load melt simple polyetherpolyols with the included pre-iodine metal in a quantity of 0.05-0.2 wt.% polyetherpolyols, dried, add 2.4 toluylenediisocyanate, then in the resulting prepolymer is injected 3,3'-dichloro-4,4'-diphenylmethanediisocyanate, place the reaction mixture into the mold, thermoablative and cool. Get the model of molds with optimal physical and mechanical properties. 6 other, 3 tables. The invention is used in foundries for the manufacture of models, moulds. A method of obtaining models of molds by the interaction oxopropanenitrile, diisocyanate and 3,3'-dichloro-4,4'-diaminodiphenyl methane (1). Material obtained in a known manner, has a low hardness and strength. Closest to the invention is a method of obtaining models of molds through the interaction of simple polyetherpolyols, 2,4-toluylene diisocyanate and 3,3'-dichloro-4,4'-diaminodiphenyl methane (2). The material obtained in a known manner, has insufficient hardness and tensile strength and low ductility, characterization and thermostat. In the reactor at 80oWith loads of melted polyester, create a vacuum, include a stirrer, heated polyester to 95-105oWith and dried it within a specified time, depending on the content of hydroxyl groups in the polyester. After drying when the heating and vacuum, but running the mixer load estimated amount of 2,4-toluylene diisocyanate, are the synthesis of the prepolymer when 88.95oWith over 60.90 min, depending on the activity of polyester. Upon completion of the synthesis of the prepolymer repeat the disable operation of the electric heating and vacuum, while the mixer load pre-molten 3,3'-dichloro-4,4'-diaminodiphenylmethane and are joining chains of molecules at the same temperature as the synthesis of the prepolymer within 5.7 min, then turn off the stirrer, heating and vacuum and poured into the prepared polyurethane into the prepared molds. Filled with polyurethane molds are placed in an oven for heat treatment of polyurethane when 100.120oWith over 8.22 PM This method of obtaining polyurethane (3) does not require a step of synthesis, the boundary between the synthesis of the prepolymer and curing the condition, the process ends with the receipt of the finished elastomer. After the positions on the basis of polyurethane, which would have higher strength and hardness combined with high elongation. To achieve the above objectives, in a known polyurethane composition which comprises a polyester, 2,4-toluylenediisocyanate (product M) and 3,3'-dichloro-4,4'-diaminodiphenylmethane (Diameter-X) are optionally administered under the metal, the content of all of these ingredients should be in the following ratios, wt. Product T 11-13Diameter X 8-10 Iodine metal 0,05-0,2 Polyester Else The technology of synthesis of polyurethane with iodine metal includes the components are loaded into the reactor, drying, synthesis of the prepolymer, the stitching, the fill composition in the mold, heat treatment. Iodine metal should be introduced into the reactor together with the pre-molten polyester at a temperature of 75-80oWith, before drying polyester and synthesis of the prepolymer. To obtain a composition with the desired properties and establish the optimal limits additives iodine metal was prepared 6 mixtures of ingredients, each containing,by weight. 2,4-toluylene diisocyanate (product T on TW-38-95-90) 10-14 3,3'-dichloro-4,4'-diaminodiphenyl in each track sequentially 0,25; 0,05; 0,1; 0,2; 0,5 wt. as well as polyester brand P6 (TU-103-37-70),which additional up to 100% of the part in each song (PL.1). Each composition was synthesized separately in a laboratory reactor with electric heating and thermostat. Included the reactor, it was heated to 75.80oWith melted polyester in an aluminum container on the hot plate and loaded into the reactor, immediately fell asleep iodine metal, closed the hatch reactor included a stirrer and heated, heated up to 95.105oWith and dryer for one hour. After drying off heating and vacuum, while the stirrer was loaded to the desired amount of product C, the newly created vacuum and led the synthesis of the prepolymer during 60.90 min at a temperature of 80.90oC. Upon completion of the synthesis of the prepolymer was reduced temperature at 5.6oWith just turning off the vacuum and when the stirrer was loaded to the desired amount of molten Diameter-X, the newly created vacuum, were joining chains of molecules at 75. 80oWith over 5.6 minutes then turned off the mixer, vacuum and poured the resulting polymer in a previously prepared mold samples. After heat treatment at 100oC for 8 h treatment the way, the method of obtaining the proposed polyurethane is similar to method (3), but it is necessary to establish at what point of the synthesis is the most convenient to introduce the iodine metal. Therefore, the entire synthesis process is divided into 3 stages and iodine metal was introduced at various stages: together with the molten polyester, before drying (callout 1-I stage); together with product T, before the synthesis of the prepolymer (2nd stage); together with Diameter-X, before joining (3rd stage). The remaining parameters of the synthesis temperature, duration, residual pressure, and heat treatment did not change. The quality of samples of the polymer with the introduction of iodine metal was evaluated visually, before mechanical testing. The results of the visual evaluation are shown in table 2. As can be seen from the data table. 2, the addition of iodine metal for 2 - and 3-stage synthesis not only has no effect, but even prevents the synthesis and the formation of the polymer, regardless of the number of the injected iodine. With the introduction of iodine on the 1st stage of the synthesis (together with polyester) is obtained polymer, hardness and colour intensity of which depends on the quantity of the injected iodine (see table.3); (p="ptx2"> As can be seen from the data table.3, the values of physico-mechanical characteristics of compositions of N greater than 1.5 times the base composition (without the addition of iodine metal), and the highest values of strength, hardness and relative elongation of the compositions of N 2, 3, 4. The maximum physical-mechanical features of composition No. 3 with an average value of the ingredients and with the addition of 0.1 wt. iodine metal. The addition of iodine metal less than 0.05 wt. (composition No. 1) and more than 0.2 wt. (N 5) provides smaller values of physico-mechanical properties, in comparison with compositions of N 2, 3, 4, so it doesn't make sense. Hence, the boundary values of the additive iodine metal is its content in the range of 0.05.0.2 wt. From dannyh table.3 it also follows that the boundary values of 2,4'-diisocyanate is its content in the range 11-13 wt. 3,3'-dichloro-4,4'-diaminodiphenylmethane 8-10 wt. the remainder to 100 wt.%. is polyester. An important role in the formation of a polymer with high mechanical characteristics is a method of introducing iodine metal in the composition. The positive effect of supplementation of iodine is achieved only when its introduction before cm formulations with the addition of iodine metal before drying and synthesis of the prepolymer in the range of 0.05.0.2 wt. have a higher strength characteristics, in combination with high hardness and elongation. Polyurethane with higher strength, hardness and ductility increases wear resistance pattern tooling. Solid model equipment can be successfully applied to automatic moulding lines with high specific pressure, while the snap-polyurethane base composition (table.1) or the metal when using such automatic lines worn 10 times faster. The method of obtaining models of molds by downloading a simple polyetherpolyols in the form of a melt, drying it, add 2,4-toluylenediisocyanate, introducing into the resulting prepolymer 3,3'-dichloro-4,4'-diaminodiphenylmethane, followed by pouring the reaction mass into the mold, heat treatment and cooling, characterized in that the melt is simple polyetherpolyols pre-enter of 0.05 to 0.2% iodine metal based on the weight of simple polyetherpolyols.
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