Method of obtaining compounded foam polyurethane |
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IPC classes for russian patent Method of obtaining compounded foam polyurethane (RU 2355713):
 Method for production of foam polystyrene granules, process line for method realisation and stabilisation unit used in this line / 2351470
Present invention is related to devices and methods intended for production of foam polystyrene in the form of granules. Method is described for production of foam polystyrene granules, which includes supply of foaming polystyrene granulated material into chamber of foaming device provided with blade mechanism, production of foam polystyrene granules by means of granulated material foaming in steam-air medium, temperature reduction and drying of granules directly after foaming in process of continuous mixing, pneumatic transportation of granules to stabilisation unit, aeration of granules in it in movable air medium, and the method differs by the fact that initial raw materials used is granulated material of self-extinguishing foaming polystyrene, which is powdered with antistatic substance prior to foaming, after foaming steam supply to chamber of foaming device is isolated, and granules are dried in it with simultaneous mixing by blade mechanism, with further cooling in intermediate reservoir, and in stabilisation unit granules are aerated in turbulent medium of heated air at the temperature that is not higher than temperature of hot plastic deformation of granules. Process line is also described as well as stabilisation unit for production of foam polystyrene granules.
Polyurathane or polyisocyanurate foams, foamed by hydrofluorocarbons and carbon dioxide / 2342405
Present invention pertains to the method of obtaining hard polyurethane or polyisocyanurate foams which can be used for making refrigerating machines. The method involves reaction of: (a) organic diisocyanate and/or polyisocyanate with (b) activated aromatic amine polyol, with ratio of equivalents of groups (a) to groups with active hydrogen (b) ranging from 0.9 to 3.0, in the presence of, (c) more carbon dioxide and water, and (d) C3-C5 fluorocarbon. The invention aims at designing a method of producing hard urethane foams, with good physical properties, including a low k-factor, using environmentally acceptable foaming agents. This given task is solved by that, HFC (hydrofluorocarbon) is used as the foaming agent, combined with water and supplementary carbon dioxide.
Method of obtaining porous plastic materials from unsaturated polyester resins / 2341541
Porous plastic materials from unsaturated polyester resins are obtained by their foaming with carbon dioxide, released during interaction of sodium carbonate with acid, in presence of zinc stearate, aerosyl, hardener- cyclohexanone peroxide and accelerant - cobalt napthenate, in which into mixture of initial reagents, which does not contain water, solution is introduced as acid component of gas-forming agent acetic acid in water-free diethylformamide.
Method of obtaining porous plastic materials from unsaturated polyester resins / 2341541
Porous plastic materials from unsaturated polyester resins are obtained by their foaming with carbon dioxide, released during interaction of sodium carbonate with acid, in presence of zinc stearate, aerosyl, hardener- cyclohexanone peroxide and accelerant - cobalt napthenate, in which into mixture of initial reagents, which does not contain water, solution is introduced as acid component of gas-forming agent acetic acid in water-free diethylformamide.
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.
 Low-loss foam composition with and low-loss foam-layered cable / 2334768
Invention refers to foam composition for cables and to telecommunications cable containing foam composition. Foam composition of density 85 kg/m3 to 120 kg/m3 is produced by heating up the olefin polymer, mainly, with foaming initiator added to molten state. Molten mixture is extruded under pressure through draw plate using foaming agent containing atmospheric gas, e.g. carbon dioxide, nitrogen or air, and additional foam-blowing agent of boiling point within -65°C to +50°C, selected from hydrofluorocarbons, hydrochlorofluorocarbons or perfluoro compounds. As olefin polymer mixture contains high density polyethylene, average density polyethylene, low density polyethylene, linear low density polyethylene, polypropylene or their combinations. Cable is produced by extruding foam composition to signal-carrying conductor and coating signal-carring conductor embedded in foam material with suitable conducting screen.
 Ventilated closures for containers / 2332199
Closure device contains a pair of flexibly connected the first and the second elements jointly forming the channel for the liquid medium. At this the mentioned first element is connected to the base, arranged for its fixation to the container. At this the base and/or the first element includes at least two sections made of foam ventilating material that provide the possibility of gas passage and prevent the passage of a large amount of liquid. At this material of one section has a higher pressure of water penetration then the material of the other section. The mentioned group of inventions also refers to the closure device for processing and discharge of the liquid, as well as for the unit for the drink discharge, foam ventilating material and the container with such material.
Thermoplastic resin covering composition for particles designed for forming styrofoam containers / 2328510
Invention relates to the thermoplastic resin particles designed for forming the Styrofoam containers. The foaming thermoplastic resin particles are described, consisting of polymer obtained from the vinyl aromatic monomers, and bearing on their surface the covering composition at approximately 0.005 to 2.0 mass percent at particle mass. At that, the said covering composition includes the components selected from the group consisting of 1) liquid part and 2) solid part; and the said liquid part contains: a) from approximately 0.01 to 0.8 mass percents at a particles mass of polyethylene glycol with the apparent molecular weight from approximately 200 to 800; the said solid part contains the components selected from the group consisting of b) from approximately 0.01 to 1.0 mass percent at a mass of the polyolefin wax particles; c) from approximately 0.01 to 0.6 mass percent at a mass of the particles of the metal-containing salt of the higher fatty acids; d) from approximately 0.01 to 0.8 mass percents at a particles mass of polyethylene glycol with the apparent molecular weight from approximately 900 to 10000; and e) from approximately 0.01 to 0.1 mass percent at a mass of the fatty bisamide particles; and their combinations. Also, the styrofoam container and the formed article produced from the said foaming particles, are described. The covering composition for the said particles and the method for improvement the leakage resistance in the styrofoam container, are described.
Thermoplastic resin covering composition for particles designed for forming styrofoam containers / 2328510
Invention relates to the thermoplastic resin particles designed for forming the Styrofoam containers. The foaming thermoplastic resin particles are described, consisting of polymer obtained from the vinyl aromatic monomers, and bearing on their surface the covering composition at approximately 0.005 to 2.0 mass percent at particle mass. At that, the said covering composition includes the components selected from the group consisting of 1) liquid part and 2) solid part; and the said liquid part contains: a) from approximately 0.01 to 0.8 mass percents at a particles mass of polyethylene glycol with the apparent molecular weight from approximately 200 to 800; the said solid part contains the components selected from the group consisting of b) from approximately 0.01 to 1.0 mass percent at a mass of the polyolefin wax particles; c) from approximately 0.01 to 0.6 mass percent at a mass of the particles of the metal-containing salt of the higher fatty acids; d) from approximately 0.01 to 0.8 mass percents at a particles mass of polyethylene glycol with the apparent molecular weight from approximately 900 to 10000; and e) from approximately 0.01 to 0.1 mass percent at a mass of the fatty bisamide particles; and their combinations. Also, the styrofoam container and the formed article produced from the said foaming particles, are described. The covering composition for the said particles and the method for improvement the leakage resistance in the styrofoam container, are described.
Thermoplastic resin covering composition for particles designed for forming styrofoam containers / 2328510
Invention relates to the thermoplastic resin particles designed for forming the Styrofoam containers. The foaming thermoplastic resin particles are described, consisting of polymer obtained from the vinyl aromatic monomers, and bearing on their surface the covering composition at approximately 0.005 to 2.0 mass percent at particle mass. At that, the said covering composition includes the components selected from the group consisting of 1) liquid part and 2) solid part; and the said liquid part contains: a) from approximately 0.01 to 0.8 mass percents at a particles mass of polyethylene glycol with the apparent molecular weight from approximately 200 to 800; the said solid part contains the components selected from the group consisting of b) from approximately 0.01 to 1.0 mass percent at a mass of the polyolefin wax particles; c) from approximately 0.01 to 0.6 mass percent at a mass of the particles of the metal-containing salt of the higher fatty acids; d) from approximately 0.01 to 0.8 mass percents at a particles mass of polyethylene glycol with the apparent molecular weight from approximately 900 to 10000; and e) from approximately 0.01 to 0.1 mass percent at a mass of the fatty bisamide particles; and their combinations. Also, the styrofoam container and the formed article produced from the said foaming particles, are described. The covering composition for the said particles and the method for improvement the leakage resistance in the styrofoam container, are described.
Polyurethane resin, obtained from poly hydroxilated resins, method of obtaining it and its application / 2331655
Invention pertains to polyurethane resin, which is a product of a reaction between at least one diisocyanate and components, containing functional groups, which have capacity to react with isocyanates, with the following composition: (a) first group, which is formed by one or more polyester-polyols based on ethers, each of which has average molecular mass ranging from 400 to 12000 g/mol, (b) second group, formed by one or more poly hydroxilated resins, chosen from a defined group of resins, (c) optional third group, formed by one or more polyols, each of which has average molecular mass, equal to or less than 800 g/mol, which are also chosen from a defined group of polyols, and (d) at least one amine and a reaction chain-stopping agent. The ratio of equivalent masses of diisocyanate and components, containing functional groups, with capacity to react with isocyanates, is chosen such that, naturally all isocyanate groups of diisocyanate are present as a product of the reaction with one of the above mentioned functional groups, with capacity to react with isocyanates. The invention also relates to the method of obtaining the above mentioned polyurethane resin, to polyurethane resin obtained through such methods, to coating for plastic substrates, containing the proposed resin, as a polyolefin binding substance, to use of such a polyurethane resin as a film forming substance in printing ink for printing on plastic substrates, as well as to the method of obtaining a laminate, which has a layer obtained when printing an image, including stages (a)-(d), with use of coating from polyurethane resin, and to a laminate, obtained using such a method.
Polyurethane composition / 2280048
Invention relates to compositions of molded polyurethane elastomers showing high physico-mechanical characteristics and providing high cyclic stability of products at alternate loadings within a wide operation temperature range. Invention may be used in rubber industry to manufacture cast tires and rolls for monorail vehicles. Composition according to invention contains polyoxytetramethylene glycol, mixture of 2,4-tolylenediisocyanate and 1,6-hexamethylenediisocyanate at molar ratio (0.8-0.9):0.1, and 3,3'-dichloro-4,4'-diaminodiphenylmethane in the form of solution in polyoxytetramethylene glycol at molar ratio (0.67-0.7):(0.29-0.30) as liquid hardener.
Priming composition comprising aromatic polyurethane polyol, method for applying cover, method for car finishing / 2278138
Invention relates to aromatic polyurethane polyols used as components of priming compositions. Invention describes the priming composition comprising aromatic polyurethane polyol including product of reaction: (a) at least one diol component among number of α,β-diols, α,γ-diols and their mixtures; (b) at least one triisocyanate; (c) at least one diisocyanate wherein at least one isocyanate is aromatic one, and molecular mass or aromatic polyurethane polyol is 3000 Da, not above, and a cross-linking agent also. Prepared aromatic polyurethane polyol shows viscosity value by Brookfield at the level 8260 centipoises, OH-number 192.6 KOH/g and the dispersity (Mn/Mw) at the level 3.0. Priming compositions prepared by using indicated aromatic polyurethane polyol are useful in finishing large means of transportation, for example, trains, trucks, buses and airplanes, in particular, in vehicle body works. Also, invention relates methods for applying priming compositions on support comprising applying indicated compositions, and to a method for finishing car in repairs comprising applying the indicated priming composition.
 Polyisocyanate crosslinking composition and its preparation / 2233851
The invention relates to the production of a mixture of polyfunctional isocyanates and use it as an isocyanate component and simultaneously cross-linking agent when receiving both hard and flexible foams
 Method of producing elastic polyurethane foam products / 2024555
The invention relates to polyurethane chemistry and relates to a method of producing elastic polyurethane foam product of more than 0.15 m3used in the furniture industry, vehicles, toys and t
Mixture for obtaining flexible polyurethane foam / 2326132
Invention pertains to the mixture for obtaining flexible polyurethane foam and can be used as mastic for hydro and thermal insulation of foundations, buildings, pipelines, as well as for filling cavities in building structures. The mixture contains defined ratios of the following components: a hydroxyl containing oligomer-copolymer of butadiene and piperylene with molecular mass of 2100 and containing 0.92% hydroxyl groups; isocyanate component - polymethylene polyphenyl isocyanate with 29-31% content of isocyanate groups; catalysts: dibutyl tin dilaurate and N,N,N- triethylamine; water; glycerine; polydimethyl siloxane and polydimethyl siloxane modified by a polyester in the form of foam stabilisers and extra bitumen. Use of bitumen considerably lowers moisture absorption of the material and increases viscosity of the foam systems. This also enables the material to retain the density attained during foaming. Use of defined foam stabilisers in the mixture enables formation of more fine cells, with high stability and attainment of low density of the polyurethane foam.
 The method of obtaining modifier / 2237680
The invention relates to the field of rocket technology and concerns a method for obtaining a modifier, which is the basis for unsaturated polyester compounds
 Composition for producing elastic polyurethane foam / 2152960
The invention relates to compositions intended for the production of flexible polyurethane foams used for the manufacture of cushioning underlayer coatings arenas, circus arenas, sports mats
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
 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.
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FIELD: chemistry. SUBSTANCE: invention concerns method of obtaining compounded foam polyurethanes for operation as shock, heat and sound absorbing layers. Compounded foam polyurethanes are obtained by interaction of 100 weight parts of polyol component and 20 weight parts of polyisocyanate component, where polyol component is mixed preliminarily with 70-100 weight parts of rubber chips, and reaction mix is foamed and solidified at 160°C or higher to component destruction temperature. Butadiene and piperylene copolymer with 1200-3200 molecular weight and 0.8-1.1% content of hydroxylic groups is used as polyol component, and polymethylenepolyphenylisocyanate with 29-31% content of isocyanate groups is used as polyisocyanate component. EFFECT: simplified composition and technological process for mix processing in elastic foam material production, facilitated utilisation of rubber industry waste, particularly rubber chips, and higher compounding degree and tension at 40% compression of foam polyurethanes obtained by the claimed method. 2 ex, 3 tbl
The invention relates to a method for producing flexible foams, designed to work as a shock-absorbing, heat - and sound-insulating layer. Known composition for the manufacture of shock-absorbing polyurethane foams and method of reception by mixing polyetherpolyols with a molecular weight in the range 100-20000 at a temperature of 20-25°C With a catalyst, surface-active agent, the polymer increases the stickiness of the resin, foaming agent, and an aromatic polyisocyanate, followed by foaming in a mold at a temperature of 20-50°C. (U.S. Pat. RF 2291170, MKI 7 C08L 75/08, C08G 18/48, C08J 9/00, 10.01.2007). However, this method does not allow to produce filled with polyurethane foam. Known composition and method (U.S. Pat. RF 2152960, MKI 7 C08G 18/69, C08L 75/12, C08G 18/69, C08G 101/00, 20.07.2000) to obtain a flexible polyurethane foam by mixing the hydroxyl-containing oligomer, isocyanate component, a catalyst, water, prestabilization and glycerine of the following composition, wt. including:
The disadvantage of this method is the relatively high viscosity of the composition is that it is not possible to produce filled with polyurethane foam. Closest to the present invention is a method of producing elastic polyurethane foam by mixing polyol as one component, a polyisocyanate component, foaming substances, including liquid carbon dioxide, Katalizator, perhaps, auxiliary chemicals at a pressure sufficient to maintain the carbon dioxide in the liquid state, and the pressure decrease and the interaction of the mixture with an elastic penopoliuretana, in which the polyol as one component includes a polymer polyol comprising at least a simple polyetherpolyols, having an average nominal functionality of at least 2.5 and containing buried in it from 2 to 50 wt.% polymer particles based on the total weight of the polymer polyol, the amount of polymer particles does not exceed 50 microns (U.S. Pat. RF 2222552, MKI 7 C08J 9/12, C08G 18/48, C08G 18/46, 27.01.2004). The disadvantage of this method is the complexity of instrumentation associated with the use of liquid carbon dioxide, and the restriction on the use of polymer fillers with larger particle size, such as rubber crumb, which in turn yields a foam with a low unit rate compression. Thus, the known methods do not allow to obtain a polyurethane foam containing coarse polymeric fillers, which reduces their consumption and performance. In addition, known methods for producing foams require the use of foaming agents. Cause that impede the achievement of the desired technical result ol the use of known methods for producing polyurethane foams, is the high viscosity of the filled compositions, which is 25-300 PA·C. generally, the viscosity of the compositions for the preparation of polyurethane foams is 5-12 PA·S. In this regard, an important task is to develop a new way of getting filled with polyurethane foam, which would be recycled mixtures containing coarse polymeric fillers and allowed to refuse the use of foaming agents. The technical result of the proposed method is the possibility of recycling of rubber crumb getting filled with polyurethane foam with the desired combination of properties, including composition of waste rubber industry, and the refusal of expensive foaming agents. The technical result is achieved by conducting interaction polyol as one component with the polyisocyanate component, the polyol as one component used is a copolymer of butadiene and piperylene with a molecular mass of 1200-3200 and the content of hydroxyl groups of 0.8-1.1%, and as a polyisocyanate component polymethylenepolyphenylisocyanate with the content of isocyanate groups 29-31%, and polyol as one component pre-mixed with rubber crumb and the reaction mixture foamed and utverjdayut at a temperature of from 160°C to the temperature of decomposition of the components in the composition, in the following ratio, wt. including:
The invention consists in that when heated the reaction mixture to 160°C and above there is a substantial decrease in the viscosity of the mixture. In the reaction mixture intensive processes of desorption of the dissolved copolymer of butadiene and piperylene gas of low molecular weight impurities and the products formed during curing of the polyurethane foam that provides the foaming mixture. Formed cross-links during interaction polyol as one component with the polyisocyanate component is securely fixed to the porous structure of the material, providing filled with polyurethane foam, consisting of waste rubber industry, imenno rubber crumb. In the proposed method uses the following components. As gidroksilsodyerzhascimi component used rubber butadiene-piperylene low-molecular SKDP-N (TU 2294-076-05766741-97). The ratio of monomers to 50:50, molecular weight 1200-3200, the content of hydroxyl groups of 0.8-1.1%, with a dynamic viscosity at 20°C 7-14 PA·S. As the isocyanate component is used polymethylenepolyphenylisocyanate received by postironium condensation products of aniline and formaldehyde (TU 113-03-38-106-90), the content of isocyanate groups 29-31%, the content of 4,4'-diphenylmethanediisocyanate 50-60%. Can be used with other brands of polyisocyanates based on 4,4'-diphenylmethanediisocyanate. The filler - rubber crumb obtained by shredding used tires, sled cameras, rubber tread, tyre, vulcanized waste production (TU 38-00149438-48-92 "rubber crushed") with particle sizes of 0.5 to 2.0 mm Can be used and other crumb rubber obtained by grinding vulcanized rubber waste, in particular on THE 38-108015-87 "crushed rubber sports track or on THE 38-108035-97 "crushed rubber stamps RD, RDS, RJ". Rubber crumb take in the amount of 70-100 wt. hours at 100 wt. including polyol as one component that is optimal for the development of elastic materials containing g is bidisperse polymer fillers. The method of obtaining filled with polyurethane foam is as follows. In the mixer load polyol as one component and rubber crumb. The duration of mixing for 5-10 minutes. In the resulting suspension is injected polyisocyanate component and stirred until homogenization within 3-5 minutes. The mixture is then poured into the prepared pan and maintained at a temperature of 160°C for 60 minutes. The samples are tested according to GOST 409-77 "Plastic mesh and rubber sponge. The method of determining the apparent density", GOST 11721-78 "porous rubber. The method of determining uprugoopticheskii tensile property", GOST 27110-86 "rubber. The method of determining the elasticity to rebound on the device type Shoba," GOST 26605-93 "Polymer elastic porous materials. The definition according to the stress-strain behavior in compression and tension compression". The invention is illustrated by the following examples. Example 1. Prepare a mixture in accordance with table 1. The foaming and curing of the compositions is carried out at a temperature of 160°C for 60 minutes. Physico-mechanical properties of the resulting filled elastic foams are given in table 2. Example 2. Prepare a mixture of 1 (table 1), changing the temperature and duration of the foaming and curing of the composition. Physico-mechanical properties of the obtained foams Pref is found in table 3.
From the data of table 2 and 3 shows that the implementation of the proposed method is possible at temperatures of 160°C and above. When carrying out the process at temperatures below 160°C without special foaming agents derived monolithic materials. Penopoliuretany obtained in example 1, have a higher 3.9-4.8 times the degree of filling compared with the known method, are elastic porous materials with higher (1.8-2.1 times) voltage at 40% compression compared with the known method. The upper temperature limit obtain foams of the proposed method is limited by the temperature of destruction of the ingredients included in the composition of the mixture. In addition, using the proposed method allows to simplify the composition and techno is agicheskii the processing of the mixture in the manufacture of flexible foam, because of the prescription are excluded catalyst and a blowing agent, which reduces the requirements for a valid time intervals of mixing and molding a polyurethane composites by increasing the survivability of the prepared mixture. Thus, the above data confirm that the implementation of the use of the claimed invention, the following cumulative conditions: the method embodying the claimed invention in its implementation, allows to obtain porous materials based on full mixes; the claimed invention allows to obtain an elastic shock-absorbing, heat - and sound-insulating coating; for the claimed invention in the form as it is described in the independent clause following claims, confirmed the possibility of its implementation using the above described in the application or known before the priority date tools and methods; the tool embodying the claimed invention in its implementation, is able to achieve perceived by the applicant of the technical result. Therefore, the claimed invention meets the requirement of "industrial applicability" under the current law. The method of obtaining filled with polyurethane foam by reacting polyol as one component with a polyisocyanate comp is the component, characterized in that as a polyol as one component used is a copolymer of butadiene and piperylene with a molecular mass of 1200-3200 and the content of hydroxyl groups of 0.8-1.1%, and as a polyisocyanate component polymethylenepolyphenylisocyanate with the content of isocyanate groups 29-31%, and polyol as one component pre-mixed with rubber crumb and the reaction mixture foamed and utverjdayut at a temperature of from 160°C to the temperature of decomposition of the components that are included in the following ratio, parts by weight:
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