Method of producing biodegradable compositions containing starch derivatives based on polysaccharide ethers and esters |
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IPC classes for russian patent Method of producing biodegradable compositions containing starch derivatives based on polysaccharide ethers and esters (RU 2445326):
 Composite material and its production method to implement the required heat transfer coefficient / 2232786
The invention relates to the production of composite materials based on polymers, intended mainly for the production of wall heat exchangers, separating fluids, and working in an aggressive, malwarescanner and not aggressive environments under drip and film condensation of water vapor on teplovosprinimajushchie surfaces, and convective transfer of heat from hot fluid to the wall(s) and the wall(OK) to the cold heat transfer medium and can be used both in stationary heat and power plants, and in the engines of vehicles
 Water-dispersible powder polymer composition and a method of producing fluids with high viscosity / 2134702
 Glass-like polysaccharide abrasive product and method of its production / 2095370
The invention relates to a product comprising glass-like polysaccharides and method thereof
Antifriction polymer composition / 2445323
Composition contains low-pressure polyethylene and bis-[2-(2-oxo-3,5-di-tert-butylphenyl-amino)-4,6-di-tert-butyl-cyclohexa-3,5-dienon]Al(III) as an additive. The disclosed composition has low coefficient of friction and high heat resistance and hardness.
 Polyolefin compositions, articles made therefrom and preparation methods thereof / 2444546
Composition has density ranging from 0.950 g/cm3 to 0.970 g/cm3, I21 less than or equal to 8, I2 from 0.02 to 2 dg/min, molecular-weight distribution Mw/Mn from 15 to less than 20, and contains 45-80 wt % high-molecular weight component and 55-20 wt % low-molecular weight component. The high-molecular weight component contains an ethylene and C3-C20 α-olefin copolymer with density from 0.920 g/cm3 to 0.950 g/cm3, I21 from 0.05 to 1 dg/min and Mw/Mn from 2 to 8. The low-molecular weight component contains an ethylene homopolymer with density from 0.965 g/cm3 to 0.985 g/cm3, I2 from 600 to 2000 dg/min and Mw/Mn from 2 to 6.
 High-density polyethylene compositions, preparation methods thereof, articles made therefrom, and method of making said articles / 2444545
Invention relates to a high-density polyethylene composition, preparation method thereof, articles made therefrom and a method of making said articles. The composition contains at least a first component which is a high-molecular ethylene and alpha-olefin copolymer, and a second component which is a low-molecular ethylene polymer. The composition has flow melt index (I2) of at least 1, density in the range of 0.950-0.960 g/cm3 and g' equal to or greater than 1. The first component of the composition has density in the range of 0.915-0.940 g/cm3 and flow melt index (I21.6) in the range of 0.5-10 g/10 min. The second component has density in the range of 0.965-0.980 g/cm3 and flow melt index (I2) in the range of 50-1500 g/10 min. The method of preparing the composition comprises the following steps: feeding ethylene and one or more alpha-olefin comonomers into a first reactor; (co)polymerisation of ethylene in the presence of one or more alpha-olefin comonomers in a first reactor to obtain a first component which is a high-molecular ethylene and alpha-olefin copolymer; feeding a first component and an additional amount of ethylene into a second reactor; polymerisation of the additional amount of ethylene in the second reactor to obtain a second component which is a low-molecular ethylene polymer. Articles made from the disclosed high-density polyethylene composition can be made through compression moulding, injection moulding or high-pressure blow moulding. Closing devices such as bottle caps, made from said high-density polyethylene composition are characterised by high cracking resistance due to environmental action.
 Rubber mixture / 2437906
Rubber mixture contains the following in pts.wt: fluororubber SKF-26-100, calcined magnesia 5-6, calcium hydroxide 5-6, technical carbon T-900 20-22, barium sulphate 10-12, low-molecular weight polyethylene 1.0-1.1, dibutyl sebacate 1.0-1.1, diphenylol propane 1.6-1.7, octaethyl tetraamidophosphonium bromide 0.5-0.6, filler - magnetic powder Nd-Fe-B modified with 4.5-5.0% solution of γ-aminopropyl triethoxysilane in ethyl alcohol 50-500.
 Polymer material / 2437905
Invention is directed to removal of bubbles from moulded item without intense overheat at moulding. Polymer material is made of composition containing solid particles of poly-ethylene or copolymer of ethylene and liquid or solid processing additive at amount from 0.05 to 1 % of total weight of polymer material. As a processing additive there is used chemical composition having temperature of melting 30-40°C below temperature of polymer material melting or boiling temperature 30-40°C higher, than maximal temperature of polymer material moulding. The additive contains at least one polyol and a reacting component. The reacting component is chosen from a group including at least one monobasic or multi-basic carbonic acid and/or at least one anhydride of said acid, or boron oxide, of boric acid.
 Composite oil-and-petrol resistant, wear- and frost-resistant material / 2437903
Rubber mixture contains the following in wt %: BNKS-18AN rubber 34.51-38.48, sulphur 0.9-1.0, sulphenamide T 1.04-1.15, N,N-diphenyl guanidine 0.07-0.12, zinc oxide 1.04-1.15, diaphene FP 0.35-0.36, acetonanyl N 0.69-0.77, colophony 0.69-0.77, stearine 0.35-0.38, ultra-high molecular weight polyethylene modified with 7 wt % natural carbon-containing material - carbosil 5.76-15.50, technical carbon P-803 27.61-30.79, technical carbon P-324 6.9-7.76, dioctyl sebacate 10.35-11.54.
Binding agents for polyolefins filled with natural fibres and compositions thereof / 2437894
Described is a composition for obtaining a binding agent for soaking cellulose fibres. The composition contains polyolefin resin which reacts with 1.6-4.0% maleic anhydride. The composition has less than 1500 ppm free maleic anhydride. The resin has melt flow index at 190°C and 2.16 kg ranging from approximately 0.1 to 500 g/10 min. The composition has yellowing index of 20-70. The polyolefin is polyethylene. Described also is a cellulose composite containing 10-90% cellulose fibre; a first polyolefin resin having melt flow index from 0.1 to 100 g/10 min; 0.1-10 wt % composition for obtaining the binding agent. The maleic anhydride is grafted on the polyethylene.
Polymer composite material for making electrolysis baths / 2436815
Material contains high-density polyethylene M 273-83, low-density linear polyethylene M.PE 2 NT 05-5 and low-density polyethylene ML 5313-003, calcium stearate, talc with particle size of up to 20 mcm and stabilisers such as Richnox 1010 and Richnox 168. The combination of components in defined ratios enables the polymer composite material to retain its mechanical, thermophysical, chemical and electrical insulation properties for a long period of time at operating temperature ranging from -30°C to + 90°C.
Procedure for manufacture of thermo-shrinking material / 2436814
Invention refers to manufacture of thermo-shrinking materials on base of stabilised and radiation-cross-linked polyethylene designed for packing food products, various items, and thermo-shrinking tubes for protection of cable connections. It can be used at manufacture of items (straps, bands) for protection of pipelines from corrosion. According to the disclosed procedure for manufacture of thermo-shrinking materials a stabiliser chosen from poly-hydro-kinone-di-sulphide, poly-resorcin-di-sulphide or poly-pyro-catechine-di-sulphide is introduced into polyethylene. For uniform distribution of the stabiliser in volume of material the latter is introduced into polyethylene in form of super-concentrate corresponding to granulated source polyethylene containing specified stabiliser with concentration of 5-8%. Produced material is radiated with γ-radiation Co60 or accelerated electrons with absorbed dose 0.05-0.1 MGr. Radiated material is subjected to thermo-drawing at temperature above temperature of non-radiated polyethylene melting in a lengthwise direction at 10-30%, and in a crosswise direction at 5-8%. Tubes are blown out in diametrical direction for not less, than at 50%.
 Improved lubricant composition for cellulose-thermoplastic composite / 2434904
Composition contains the following, wt %: 0.05-6.9 (a) bisamide of saturated fatty acid with the structure:
Method of preparing biodecomposable compositions based on cellulose ether / 2395540
Invention relates to a method of preparing compositions which are subject to biodecomposition based on methylcellulose, which can be used for cosmetic and medical purposes. The composition contains methylcelluose, a reagent for modifying rheological characteristics, a hygroscopic reagent and an antibacterial agent. The reagent for modifying rheological characteristics is selected from gelatine or casein. The hygroscopic reagent is selected from glycerine or polyethylene glycol. The antibacterial agent is silver nitrate. The composition also contains a plasticiser. The composition is prepared by mixing a colloidal gel of methylcellulose with the reagent for modifying rheological characteristics, the hygroscopic reagent and the antibacterial agent.
Sulphur-cured rubber particle surface activation and/or devulcanisation process / 2354671
Destruction of sulphur bridges and recovery of sulphur is ensured by bioprocessing of rubber particles in a medium containing mesophilous, anaerobic and/or mesophilous, optionally anaerobic and/or mesophilous microaerophilic bacteria and/or one or more enzyme system of the specified bacteria in environment appropriate for the specified bacteria living.
 Biodegradable granular polyolefin blend and method of production / 2352597
Biodegradable granular polyolefin blend represents antimisting granules sized 2-8 mm of apparent bulk density 530-630 kg/m3, granule density less than 920-1300 kg/m3. Herewith melt flow index (MFI) of the parent polyolefin is MFI=2.5-25.0 g/10 minutes. Processing and relevant aid concentrate contains at least one biodegradable additive, thermostabilisers, antioxidants, lubricants, antistatic aids, pigments, fillers etc. The granular polymer blend is produced within a number of stages to ensure uniform distribution of all the aids in polyolefin. Four powder material flows are used. Three aid compositions are mixed with three parts of parent powder polyolefin in ratio 1:4, 1:3 and 1:2 respectively. Prepared concentrate mother stocks are supplied to the fourth combined mixer with residual part of polyolefin. If required, necessary liquid biodegradable additive. The blend is stirred and homogenised at 150-250°C.
Method of obtaining porous polymer biodegradable products for osteanagenesis / 2327709
Effect is achieved by using compositions based on different stereoregular amorphous biodegradable polymers - polylactides and copolymers of lactides with glycolides (18-72 mass ratio) as the second component of biocompatible mineral filler - hydroxyapatite with particle size of the main fraction of 1-12 mcm (8-41 mass ratio), as well as an organic solvent with boiling temperature equal to or higher than softening temperature by 3-20°C (20-41 mass ratio). After preparation of a homogenous mixture, the composition is undergoes thermal treatment at 80-130°C in a vacuum in a shaping vessel with the required shape. A porous product is obtained due to removal of solvent. Density of the obtained porous product is about 0.4-0.8 g/cm3.
Polymer composition / 2443731
Polymer composition contains the following components in pts.wt: butadiene-nitrile rubber SKN-40ASM 100, stearic acid 1.5-3.0, zinc oxide 4.0-7.5, technical carbon N550 25-35, white soot BS-120 17-30, dibutoxyethyl adipate 12-18, vulcacite SZ/EG-C 1.5-2.5, dithiodimorpholine 1.5-3.0, thiuram D 0.5-1.0, santograd PVI 0.5-1.0, asphaltene-containing mixture with 73.0-92.5 wt % asphaltene content 10-15, taurit TS-D 10-15. Taurit TS-D is an ecologically clean filler and contains silicon dioxide and carbon.
Polyamide resin composition / 2441043
Composition contains polyamide (X), obtained via polycondensation in a melt of a diamine component and a dicarboxylic acid component, a metal salt of stearic acid, and an additive (A) and/or an additive (B). Additive (A) is a compound selected from a group consisting of a diamine compound obtained from a fatty acid having 8-30 carbon atoms, and a diamine having 2-10 carbon atoms, a diester compound obtained from the fatty acid having 8-30 carbon atoms, and a diol having 2-10 carbon atoms, and a surfactant. Additive (B) is selected from a group consisting of a metal hydroxide, a metal acetate salt, a metal alcoholate, a metal carbonate salt and a fatty acid.
 Policarbonate moulding compositions / 2439099
Thermoplastic composition contains, in wt. parts: A) from 10 to 90 of aromatic polycarbonate; B) from 10 to 90 of, at least, one composition selected from a group consisting of: modified rubber of graft copolymer (B.1) or pre-compound or mixture from (B.1) with (co)polymer (B.2) free from rubber of, at least, one of monomer, selected from a group consisting of vinyl aromatic compositions, vinyl cyanides, alkyl ether (met)acryl acid with 1-8 carbon atoms in alkyls, unsaturated carboxylic acids and anhydrides and imides of unsaturated carboxylic acids; C) from 0.005 to 0.15 in terms of 100 weight parts of a combination of A and B components, of at least one aliphatic and/or carboxylic acid and D) at least, one additive. In addition, C component is either added to the melt containing A and B components, or pre-mixed up with B component at 180-260°C. This mixture is then mixed up with A component at compounding stage or B and C components mixture in a melted condition is mixed up with A component melt at 220-300°C, and all components are then dispersed.
Polymer material / 2437905
Invention is directed to removal of bubbles from moulded item without intense overheat at moulding. Polymer material is made of composition containing solid particles of poly-ethylene or copolymer of ethylene and liquid or solid processing additive at amount from 0.05 to 1 % of total weight of polymer material. As a processing additive there is used chemical composition having temperature of melting 30-40°C below temperature of polymer material melting or boiling temperature 30-40°C higher, than maximal temperature of polymer material moulding. The additive contains at least one polyol and a reacting component. The reacting component is chosen from a group including at least one monobasic or multi-basic carbonic acid and/or at least one anhydride of said acid, or boron oxide, of boric acid.
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FIELD: chemistry. SUBSTANCE: method of producing biodegradable compositions involves treating granules of a hydrophobic polymer with a finishing agent - oleic acid, which is added in batches and adding filler to the hydrophobic polymer, said filler being modified starch THERMTEX, the molecule of which simultaneously contains fragments of ether and ester groups based on phosphoric acid with a different degree of protection. The mixture is thoroughly mixed and extruded at temperature 190-200°C. The invention also relates to a method of producing biodegradable compositions, involving mixing a powdered hydrophobic polymer with filler in form of modified starch THERMTEX, the molecule of which simultaneously contains fragments of ether and ester groups based on phosphoric acid with a different degree of protection. The mixture is thoroughly mixed and extruded at temperature 190-200°C. EFFECT: improved rheological properties biodegradable polymers, heat-stabilising properties of the obtained product, ensuring good biodegradability of the polymer and obtaining a product with a decorative lustrous surface. 2 cl, 1 tbl, 2 ex
The invention relates to the chemical and food industries, in particular the production of biodegradable plastics, and can be used for the manufacture of molded or plastic products for various purposes, including food. A method of obtaining biodegradable plastics, providing for the introduction of a complex of starch in the hydrophobic polymer [RF Patent №2073037 published 10.02.1997,]. The disadvantage of this method is the low temperature processing of biodegradable compositions, which negatively affects the rheological properties of the obtained polymer, in addition, the product does not have a sufficiently high thermostabilization properties, which leads to the necessity of its processing at temperatures not exceeding 170°C. The closest in technical essence and the achieved effect is a method for biodegradable plastics, involving the administration of a hydrophobic polymer incompatible with starch as a filler complex starch in the form of particles dispersed in a hydrophobic polymer matrix [RF Patent №2230760 published 20.06.2004,]. The disadvantage of the prototype is that if you increase the temperature of the processing composition loses technological properties (tensile strength, tensile strength and so on) due to thermal decomposition is rajmala, therefore, the mixture of polymer - starch is obtained in the temperature range of 140-160°C, and the necessity of introducing a plasticizer, which is used as an ester of polysaccharide based on cellulose, which leads to lower plasticizing ability and thermal stability of the obtained composition and increases its heterogeneity, in addition, the introduction into the composition of additional agents and complexing agents complicates the technology of production and increases the cost of the product. The technical problem of the invention is to develop a method of producing biodegradable compositions comprising derivatives of starch-based esters and ethers of polysaccharides to increase the temperature of processing biodegradable compositions to 190-200°C, increase thermostabilization properties of the product, eliminating the need for the introduction of additional agents and complexing agents to improve the rheological properties of biodegradable compositions, to reduce the heterogeneity of the obtained polymer, to simplify technology for the production of biodegradable plastics, to obtain products with a decorative glossy surface. The technical problem of the invention is achieved in that in a method of producing biodegradable compositions comprising starch derivatives is based on the esters and ethers of polysaccharides, providing an introduction to the hydrophobic polymer filler mixture and further extruding, what's new is that the granules of the polymer is treated with oleic acid, which is used as a finishing agent, and oleic acid is added to the hydrophobic polymer is metered, the filler used a modified starch with a brand name THERMTEX, in the molecule of which consists of fragments of ethers and ester groups on the basis of phosphoric acid of varying degrees of zamestnanosti, the mixture was thoroughly stirred and ekstragiruyut at a temperature of 190-200°C, when this composition is prepared in the following ratio, wt.%:
When using powdered hydrophobic polymer composition is prepared by direct mixing of the hydrophobic polymer and filler - modified starch THERMTEX without using a finishing agent, the ratio of the components is, wt.%:
The technical result of the invention is to increase the temperature of processing biodegradable compositions comprising derivatives of starch-based esters and ethers of polysaccharides, up to 190-200°C, in increasing thermostabilization properties of the product, eliminating the need for the introduction of additional agents and complexing agents, reducing the heterogeneity of the obtained polymer, the simplification of technology for biodegradable plastics, the production of items with decorative glossy surface. The figure 1 presents a fragment of a molecule modified starch THERMTEX. THERMTEX - "custom made" food starch custard, obtained on the basis of dichromatopsia oxypropylene with subsequent synthesis of cross-linked product with a gelatinization temperature of about 70°C. the Viscosity THERMTEX very stable at high temperatures, low pH, and also at heavy loads and mechanical impacts. Modified starch THERMTEX is a permitted food additive e [Annex 7 to SanPiN 2.3.2.1078-01 from 14.11.2001,]. This compound is widely used in food industry as thickener food on babok [THE 9187-003-9645 7359-07]. The advantages of modified starch THERMTEX are exceptional resistance to high and low temperatures, different levels of pH of the medium mechanical stress, low hot viscosity, insolubility in cold water, a homogeneous dispersion of the particles when brewing. It is known that esters of phosphoric acid significantly improves thermal stability of the polymers and are both plasticizers [Mascia. Additives for plastics. M.: Chemistry, 1978]. The presence in the molecules of starch fragments of phosphoric acid in the form of esters provides enrichment culture medium of microorganisms in phosphorus, which promotes a more efficient biodegradation [Aigners, Ibodov Microbiology. M: Academy, 2007]. The method of obtaining biodegradable plastics is as follows. In mixer make granules hydrophobic polymer (polyethylene, polypropelene, their copolymers and other) 69,5 is 59.5 wt.%, handle coupling additive - oleic acid in the amount of 0.5 wt.%., if using powdered polymer necessity of using a finishing agent disappears, then under intensive continuous stirring, gradually add as a thermo stabilizer modified starch THERMTEX representing phosphoric e is Il starch, in the amount of 30-40 wt.%. The mixture ekstragiruyut at a temperature of 190-200°C with subsequent passage of the molded rod through the calender with the receiving sheet or film material. The method of obtaining biodegradable plastics is illustrated by the following examples. Example 1. In mixer make of 69.5 g (69,5 wt.%) polyethylene pellets and intensive continuous stirring, added dropwise to 0.5 g (0.5 wt.%) oleic acid. The mass is stirred for 10 min, then gradually make 30 g (30 wt%) modified starch THERMTEX as stabilizers, processing of the granules of the polymer modified starch THERMTEX carried out in a high-speed mixer for 10 minutes the mixture ekstragiruyut at a temperature of 190°C with subsequent passage of the molded rod through the calender to obtain a sheet material. The obtained biodegradable polymer analyze, determine the melt flow index at a temperature of 190°C, 200°C, water absorption, kinetics of biodegradation. The results of the analyses are presented in table 1. Example 2. Prepare biodegradable polymer as in example 2, but the amount of polyethylene is 59.5 g (59,5 wt.%), the amount of oleic acid and 0.5 g (0.5 wt.%), and the number of modified starch THERMTEX - 40 g (40 wt%).
As can be seen from table 1, obtaining biodegradable polymer proposed method allows to obtain good rheological properties of biodegradable polymer, as evidenced by the melt flow index (MFR), comparable with the TPP pure polyethylene, and the expansion of the m concentration of filler - modified starch THERMTEX in the composition VKT decreases and the temperature increases in processing polymer VKT increases. Water absorption of biodegradable polymers increases with increasing the concentration of filler in the composition, and the process of biodegradation of the polymer depending on the degree of fullness of the composition modified starch THERMTEX flows within 1-2 years. The optimal ratio of polymer: filler is 70-60: 30-40 wt.%, this relation of parts the product has good rheological properties, while there is a very efficient process of biodegradation of the material. When added to a polymer filler - modified starch THERMTEX - in amount less than 30 wt.% the process of biodegradation of such a polymer has more than two years. When added to a polymer filler - modified starch THERMTEX - more than 40 wt.% is the deterioration of the technological properties of the product (decreases the strength of the material in the gap, the strength of the material in tension and so on). The use of the method of producing biodegradable compositions comprising derivatives of starch-based esters and ethers of polysaccharides, allows you to: - to raise the temperature of the processing of biodegradable plastics to 190-200°C, which provides improved realo the practical properties of biodegradable polymers (in particular, to increase VKT); to improve thermostabilization properties of the obtained product; - to ensure the good Biodegradability of the polymer; - to exclude from the technology for biodegradable plastics introduction of additional plasticizer; - to obtain products with a decorative glossy surface; to reduce the heterogeneity of the composition; to simplify technology for the production of biodegradable plastics; - to reduce the cost of the resulting product. 1. The method of obtaining biodegradable compositions comprising a mixture of a hydrophobic polymer and filler and further extruding the resulting mixture, wherein the polymer beads treated with oleic acid, which is used as a finishing agent, and oleic acid is added to the hydrophobic polymer is metered, the filler used modified starch THERMTEX, in the molecule of which consists of fragments of ethers and ester groups on the basis of phosphoric acid of varying degrees of zamestnanosti, the mixture was thoroughly stirred and ekstragiruyut at a temperature of 190-200°C, while the composition is prepared in the following ratio, wt.%:
2. The method of obtaining biodegradable compositions comprising a mixture of a hydrophobic polymer and filler and further extruding the resulting mixture, characterized in that the powdery hydrophobic polymer is mixed with a filler, which is used as the modified starch THERMTEX, in the molecule of which consists of fragments of ethers and ester groups on the basis of phosphoric acid of varying degrees of zamestnanosti, the mixture was thoroughly stirred and ekstragiruyut at a temperature of 190-200°C, while the composition is prepared in the following ratio, wt.%:
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