Plasticiser and polymer composition based thereon

FIELD: chemistry.

SUBSTANCE: polyvinyl chloride composition plasticiser is a product of reaction of dioxane alcohol in a mixture with ethers and formals thereof with toluene diisocyanate. Disclosed also is a polymer composition containing polyvinyl chloride and said plasticiser.

EFFECT: modification of dioxane alcohols of the plasticiser prevents its dewetting and, as a result, reduces weight loss of the plasticiser, and enables to improve plasticising properties of the composition, raise flash point, thermal stability and resistance to thermal-oxidative degradation.

4 cl, 4 tbl

 

The invention relates to the field of polymeric compositions based on vinyl chloride polymers which can be used in various sectors of the economy, for example, to obtain a film materials, artificial leather, adhesives, binders, coatings, structural materials, cable insulation, medical products, in particular, relates to polymeric compositions containing a plasticizer on the basis of dioxane alcohols and mixtures of these alcohols and their esters and formulae, which are waste products of isoprene.

Use of waste products of isoprene as a plasticizer during processing of emulsion and suspension of polyvinyl chloride (hereinafter PVC) is widely known in the industry. The disadvantage of using such a plasticizer is increased volatility and time variations of the operational properties of compounds, such as loss of elasticity or deterioration of heat resistance.

A mixture of derivatives of 1,3-dioxane, which represents a high-boiling by-product (hereinafter WFP), formed in obtaining 4,4-dimethyl-1,3-dioxane condensation of isobutylene with formaldehyde in the production of isoprene (see Ogorodnikova S. Kaliev, Idlis G.S. isoprene Production. - L.: Chemistry, 1973 p.47, 55-58; Gottlieb EM Waste and by-products of economic production is of funds - raw materials for organic synthesis. M.: Chemistry, 1989, pp.182-183).

Allocated from the runway dioxane alcohols and the fraction with a boiling point 115-160°C With 5-10 mm Hg, containing a mixture of dioxane alcohols, their ethers and formaly known as flotation OXAL (TU 2452-015-48158319-2009), and after further distillation dioxane alcohols are used as plasticizer, known under the trademark of EDOS (TU 2493-003-13004749-93), consisting of polyurethane and polyvinylchloride compositions in the manufacture of linoleum, footwear PVC, oilcloth, artificial leather and other materials.

Plasticizer ADOS and flotation OXAL are transparent oily liquid from yellow to brown color with a characteristic smell. Physico-chemical properties of ADOS and OXAL are shown in table 1.

The main disadvantage of the use of flotation reagent OXAL, ADOS as a plasticizer due to the presence of free dioxane alcohols in which the plasticizer has a high volatility and low thermal characteristics (flash point, thermal stability, resistance to thermal oxidative degradation). On these most important characteristics of these components are significantly inferior to the most widespread phtalates the plasticizer (dioctylphthalate (DOP), the temperature CI the value is 229°C at 4.5 mm Hg, and the flash point 205°C).

Low initial boiling point and low thermal stability polisportiva plasticizer leads to partial evaporation and decomposition of its processing with the formation of formaldehyde, acetaldehyde and somaclonal acid, which significantly impairs the sanitary-Toxicological conditions for the production of plasticized products.

Low flash point (130-140°C) prevents the application of plasticizer on the basis of dioxane alcohols in the processing of the suspension of PVC because of the danger of fire.

Over time, unbound components polisportiva plasticizer begin to migrate to the surface of the finished polymer products, breaking the chemical composition of the compound. In addition, at elevated temperatures or during storage and operation of the evaporation of alcohols leads to the loss in weight of plasticizer and deterioration of mechanical properties.

OXAL or ADOS cannot be used in polyvinyl chloride compositions as a separate plasticizer because it does not provide a sufficient level of operational properties of the obtained materials in terms of thermal stability, stiffness, resistance and environmental friendliness. Therefore, these products are used only as a secondary plasticizer in amounts of 5-30 wt.% from the primary square is tificate) in combination, for example, dioctylphthalate or other ester plasticizers.

Thus, to enable the application of the plasticizer based on the waste products of isoprene (WFP), containing dioxane alcohols, in PVC compositions necessary chemical modification, to stabilize the contents of the components in the finished film.

Known way to prevent sweating of ADOS [1], according to which, in the composition of the plasticizer is encouraged to enter ANTIMIGRAINE additives, for example, petroleum resin. However, the presence of resin adversely affects performance PVC compounds, and the proposed composition and technology of obtaining plasticizer significantly more expensive polymer composition.

There is a method of modifying the waste products of isoprene [2], which includes a mixture of dioxane alcohols and mixtures of these alcohols and their esters and formats by adding substances from the group of cyclic anhydrides, such as maleic anhydride, phthalic anhydride, succinic anhydride, phosphoric anhydride, caprolactam, butyrolactam. The reaction product of the above components is proposed to use as a plasticizer for PVC polymer compositions. This solution is the closest analogue.

A disadvantage of the known is th solution is high, the temperature of the reaction (100-180°C) and long-term modification time (from 2 to 6 hours), that is unacceptable for mass production due to the complexity of the process and large energy consumption.

Objective of the claimed group of inventions is an expansion of the means of plastifitsirovanie polymers, as well as expanding the range of PVC compounds.

Achievable technical result is the elimination of the disadvantages of the known analogues, in particular the simplification of obtaining a plasticizer, reducing energy consumption and the elimination of component migration of plasticizer and losses in its mass. The polymer composition obtained using the proposed plasticizer, has improved performance characteristics, continued for long periods of time, such as thermal stability, elasticity, due to the lack of sweating plasticizer and, therefore, reduce the loss in weight of the compound.

This result is achieved by using a plasticizer for polyvinyl chloride compositions, representing the reaction product dioxane alcohols in the mixture with their ethers and formulae with diisocyanate.

The result is achieved in the polymer composition comprising polyvinyl chloride and a plasticizer containing the reaction product dioxane alcohols in the mixture with their ethers and formulae with toluylenediisocyanate the atom.

In the reaction of diisocyanate with dioxane alcohols formed a mixture of symmetrical and unsymmetrical 2-methyl-(I) and 4-methyl-1,3-phenylenecarbonyl (II)

where R1and R2mean (4,4-dimethyl-1,3-dioxane-5-yl)methyl and (2-(4-methyl-1,3-dioxane-4-yl)ethyl radicals. According to mass spectrometry (IHMS) the total content of these components of the mixture with a molecular weight of 466 may vary from 15 to 30 mass percent.

The possibility of binding of free alcohols can be used to obtain an effective plasticizer for PVC polymer compositions of the following products: waste production of isoprene runway: plasticizer "ADOS (TU 2493-003-13004749-93) and flotation OXAL (TU 2452-015-48158319-2009). As a result, the plasticizer can be used as the primary or sole plasticizer, i.e. without additional (primary) plasticizers without losing the desired properties.

The introduction of the isocyanate in the formulation polisportiva plasticizer leads not only to improvement of technological properties of the composition in comparison with the prototype, but also contributes to its mass. The addition of the plasticizer from 7.5 to 15% of the isocyanate reduces the loss in weight in 2-4 times and to improve the heat resistance of the components is the way peers.

In addition to the main components (PVC, plasticizer, stabilizers) polymer composition may contain various fillers.

Components of PVC and plasticizer according to the invention can be combined in different ratios depending on the requirements of the finished composition, in particular, the ratio may vary within the following limits: 1-100:1. The ratio of ingredients polymeric compositions with fillers can be when based on 100 wt.% PVC: 60-70% modified plasticizer and 30-35% of fillers.

To speed up interaction polisportiva component with the isocyanate can be used catalyst. The preferred catalyst is an aliphatic or aromatic amines. For example, when using 1,4-diazabicyclo[2.2.2]octane (DABCO, triethylenediamine) (TU 6-09-4234-77) reaction time at 100°C is reduced to 3-5 minutes. These conditions of the modification in the presence of a catalyst of triethylenediamine allow the process plastifitsirovanie directly in the processing chain to obtain abs plastic in a hot mixer.

Implementation of the invention can be confirmed by the following examples:

Example 1. In a heated reactor equipped with a stirrer, a load of 100 g of the product of EDOS content dioxane alcohol 15 wt.%, and 0.03 g Treaty is Indiamen. The mixture is heated to 100°C and add cent to 8.85 g of toluylene diisocyanate (TU 113-38-95-90) (the molar ratio of the alcohol and isocyanate is 2:1, mass ratio was 1.69:1). The mixture is stirred at the temperature for 5 minutes. The reaction product is a clear, homogenous, viscous liquid, light brown color, free of mechanical impurities with low specific smell.

Example 2. In a heated reactor equipped with a stirrer, a load of 100 g of flotation reagent OXAL content dioxane alcohol 28 wt.%, and 0.04 g of triethylenediamine. The mixture is heated to 100°C and added 16.5 g of diisocyanate (molar ratio of alcohol and isocyanate is 2:1, mass ratio was 1.69:1). The mixture is stirred at the temperature for 5 minutes. The reaction product is a clear, homogenous, viscous liquid, light brown color, free of mechanical impurities with low specific smell.

Comparative physico-chemical properties of DOP plasticizer, plasticizer, EDOS (contents dioxane alcohols 15 wt.%), the flotation reagent OXAL (contents dioxane alcohols 28 wt.%), and modified dioxane mixtures of alcohols and formula are shown in table 1.

Table 1.
While ately The dioctylphthalate GOST 8728-77Plasticizer "ADOS" THE 2493-003-13004749-93Flotation OXAL THE 2452-015-48158319-2009Examples
12
AppearanceTransparent colorless liquidClear liquid yellow to brownClear liquid yellow to brownTransparent liquid brownTransparent liquid brown
The flash point in open crucible °C205130-140130150155
Mass fraction of volatile impurities, wt.%0,10,61-30,10,2
Density at 20°C, g/cm30,991,08-1,101,02-1,12 1,081,1
Acid number, mg KOH/g0,10,20,30,10,1

Obtaining polymeric composition without fillers and filled polymer composition is produced in a standard way. First, you mix all powder components (PVC, stabilizers chemical resistance and, optionally, fillers) in a standard mixer with jacket for coolant at 35-40°C for 5 minutes. Then enter the plasticizer - modified mixture of dioxane alcohols and their esters and formulae. All components are mixed at 80-90°C for 15 minutes. Next, the resulting mass "ripen" without stirring at 90°C for 1 hour. Finished weight is recycled or extrusion method (the temperature of the material of the cylinder 120°C, the forming head 75°C), or rolling at 150±2°C for 10 minutes.

The approximate compositions of the polymer composition and polymer-filled compositions are shown in tables 2, 3.

Table 2.
The composition of the polymer composition
ComponentContent, wt.%
PVC brand-7059-M (GOST-14332-78)57,6
The plasticizer on the basis of the modified mixture runway (the content of dioxane alcohols 15%)39,3
Rejonowy sulfate lead (Tossa) (Germany)1,7
Calcium stearate (Germany)1,2
The diphenylolpropane (Suite) (Germany)0,2

Table 3
The composition of the filled polymer composition
ComponentContent, wt.%
PVC brand-7059-M (GOST-14332-78)46,8
The plasticizer on the basis of the modified mixture runway (the content of dioxane alcohols 15%)of 31.8
Rejonowy sulfate lead (Tossa) (Germany)1,4
Calcium stearate (Germany)1,0
The diphenylolpropane (Suite) (Germany)0,2
Mel M-60 THAT 5743-001-22242270-200218,8

Table 4 shows the comparative assessment of physico-chemical properties of filled polymer compositions on the basis of the modified mixture of dioxane alcohols and their esters and formulae (contents dioxane alcohols 15%) with industrial plasticizers.

Table 4.
Physico-chemical properties of polymer compositions on the basis of various plasticizersThe dioctylphthalate GOST 8728-77Plasticizer "ADOS" THE 2493-003-13004749-93The plasticizer on the basis of the modified mixture runway
Volume resistivity, Ohm·cm1,0·10111·1091,5·1010
Weight of plasticizer absorption, g / 100 g PVC (suspension)24-272422
The tensile strength, MPa18 2022
Elongation at break, %280320300
The loss in mass at 160°C for 6 hours, %1,55-72
The preservation of the relative elongation at break after aging at 100°C for 7 days, %957090

The proposed invention in comparison with the prototype allows to reduce the cost of modifying additive synthesis by eliminating costly raw materials, reduce the temperature of the process, to reduce the acid number of the product and the content of volatile (unbound) impurities (see table 1, 4). When chemical modification of dioxane alcohols directly in a mixture of alcohols, their ethers and formulae the proposed solution allows to increase the flash point, thermal stability, resistance to thermal oxidative degradation.

The proposed solution provides the ability to use a plasticizer EDOS in the processing of major brands of PVC (emulsion, suspension) as the primary plasticizer, as well as in combination with other what plastificator.

Polymer composition characterized by a minimal set of features needed to provide a specific result, but not excluding the presence of any other components. This composition can be considered as the basis and to be useful in the production of polyvinyl chloride polymer compositions for various purposes. Products made using the proposed composition, due to the property of the plasticizer, more elastic and have high strength characteristics by maintaining the structure of the material without destroying the high elastic deformation.

Sources of information

1. EN 2177966, publ. 10.01.2002, C08L 27/06, SC 5/04.

2. EN 2263120, publ. 27.10.2005 St, C08F 8/46, C08L 27/06.

1. Plasticizer for polyvinyl chloride compositions, representing the reaction product dioxane alcohols in the mixture with their ethers and formulae with diisocyanate.

2. Polymer composition comprising polyvinyl chloride and a plasticizer, characterized in that the plasticizer contains a reaction product according to claim 1.

3. Polymer composition according to claim 2, characterized in that it contains a filler.

4. Polymer composition according to claim 3, characterized in that it contains components in the following ratio: 100 wt.% PVC contains 70% of the modified plasticizer and 30-35% of the floor is of Italy.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: rigid polyvinyl chloride (PVC) based wood-polymer composition contains a complex stabiliser, an impact strength modifier, wood flour and silicon sol as a binding agent, with the following ratio of components, pts.wt: polyvinyl chloride 100, impact strength modifier 4.8-9, complex heat stabiliser 4.5-7, wood flour 10-160, silicon sol 2-4.

EFFECT: obtaining highly filled rigid PVC compositions based on dispersed wood flour while preserving processing and operational characteristics.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to chlorionated thermoplastic materials with mineral filler, having compatibility between said filler and chlorinated thermoplastic resin. The mineral filler compatibility agent in form of calcium when producing chlorinated thermoplastic material contains a comb-shaped polymer which contains at least one polyalkylene oxide group which is grafted onto at least one ethylenically unsaturated anionic monomer. The comb-shaped polymer contains at least one anionic monomer with ethylenic unsaturation and a monocarboxyl or phosphoric group or mixtures thereof, at least one non-ionic monomer containing at least one monomer of formula (I): , where m and p denote the number of alkylene oxide groups, which is less than or equal to 150, n denotes the number of ethylene oxide groups, which is less than or equal to 150, q denotes a whole number equal to or less than 1, where 5≤(m+n+p)q≤150, R1 denotes hydrogen or a methyl or ethyl radical, R2 denotes hydrogen or a methyl or ethyl radical, R denotes a radical which contains an unsaturated polymerisable group, preferably associated with a group of vinyl compounds, or a group of acrylic, methacrylic, maleic esters, or a group of allyl or vinyl ethers, which are substituted or unsubstituted, R' denotes hydrogen or a hydrocarbon radical with 1-40 carbon atoms or a ionic or ionisable group, such as carboxyl, and preferably denotes a hydrocarbon radical with 1-12 carbon atoms. The invention also relates to chlorinated thermoplastic materials containing at least one chlorinated thermoplastic resin, calcium carbonate and at least one compatibility agent.

EFFECT: high impact strength.

22 cl, 4 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a stabilising system for halogen-containing polymers, as well as a composition and article made from the composition which contains the stabilising system. The stabilising system for halogen-containing polymers contains component (A) in form of a calcium monocarbonate hydroxodialuminate of formula (A) CamAl2(OH)6+2(m-1)CO3*nH2O (A), where m varies from 3.8 to 4.2 and n varies from 0 to 3, and component (B) in form of catena-2,2',2"-nitrile trisethanol perchlorate lithium or sodium coordination polymer (B1), having a monomer link of formula , where Mt denotes Li or Na, An denotes OCIO3, q equals 1, and can additionally contain perchlorate of quaternary or tertiary ammonium or phosphonium (B2).

EFFECT: high heat-stabilising action.

17 cl, 19 tbl

FIELD: construction.

SUBSTANCE: composition contains a film binder - a suspension polyvinyl chloride, a plasticiser - diphenyl octyl phosphate, a stabiliser - barium, -cadmium, -zinc-containing complex brand Vigostab BKC, fireproofing additives - magnesium hydroxide brand "Ecopyrene 5C", antimony trioxide, micromarble fractionated in the ratio of (4.66÷6):1:1 accordingly, pigment is titanium dioxide and optical bleacher.

EFFECT: composition has high strength properties, does not sustain combustion, does not produce drops in process of burning, has low weight, high extent of whiteness, has water resistance to several meters of water column.

4 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: polyvinyl chloride-based wood-polymer composition for profiled-trim moulding articles contains polyvinyl chloride, wood flour, a complex stabiliser, an acrylic modifier, polyethylene wax and a metal-containing lubricant. The metal-containing lubricant used in the composition is obtained by reacting higher monocarboxylic acids with glycerin at 130-230°C at molar ratio 1:(1-2) in the presence of oxides of divalent metals Ca, Zn, Mg or their two-component mixtures in weight ratio 0.25-1.0:0.5-1.0 in amount of 0.5-2.0 wt % of the overall reaction mass, where the higher monocarboxylic acids used are VIK, oleic and stearic acid. The composition also uses polyethylene wax with melting point not higher than 100°C. The complex stabiliser used is selected from: BAEROPAN R 9003 (produced by Baerlocher GmbH, Germany) or Naftosafe PEK 922 B (produced by Chemson, Austria). The acrylic modifier used is impact-resistant modifiers selected from: MB-87, DURASTRENGTH D320, DURASTRENGTH D300S (produced by Arkema, France), Metablen P-5500S (produced by Dangdong), Paraloid BTA 736H-S OS (produced by Rohm & Haac), Kane ACE F50 (produced by Kalek), Lariks on TU 2216-235-05757533-2000.

EFFECT: high quality of profiled-trim moulding articles, which is expressed by improved operational and technological parameters, specifically melt flow index, thermal stability, impact viscosity, low water absorption and environmental safety of the composition.

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a processing additive for extrusion of polyolefins or thermoplastic resins. The composition contains at least one fluoropolymer (A), at least one inter-phase agent (B) and at least one stabiliser (C). The invention also relates to an extrusion method, which involves: (i) bringing the composition in solid state, as described above in any of claims 1-13, into contact with polyolefin or thermoplastic resin and (ii) extrusion of the mixture obtained at step (i) to obtain a film, pipe, relief or hollow body.

EFFECT: additive reduces or eliminates extrusion defects without reducing the yellowing index of the resin subjected to extrusion.

14 cl, 1 dwg, 1 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: wood-polymer composition for articles contains polyvinyl chloride, wood flour, calcium-zinc complex stabiliser and the composition can additionally contain a metal-containing lubricant obtained via reaction of higher monocarboxylic acids with glycerine at 130-230°C in molar ratio 1:(1-2) in the presence of oxides of divalent metals Ca, Zn, Mg or other two-component mixtures in weight ratio 0.25-1.0:0.5-1.0 and polyethylene wax.

EFFECT: high quality of ready articles owing to improved technological parameters of the compositions, thermal stability, melt fluidity, water absorption and environmental safety.

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: stable plasticised composition contains C4-C30-alkyl-pyrrolidone with a straight, branched or cyclic alkyl radical in amount ranging from more than 10 phr to 400 phr (parts per 100 parts of PVC), sufficient for plasticising said PVC to a flexible state. The PVC product is characterised by Shore hardness (scale A) less than 100 and is in form of calendered sheet, plastisol, foam, dispersion, film, siding, tube or pipe.

EFFECT: ensuring prolonged plastification of PVC in order to endow the PVC-based composition with flexibility, ductility or lower melting point for making articles.

19 cl, 3 ex, 4 tbl

FIELD: chemistry.

SUBSTANCE: polyvinyl chloride composition for producing film materials contains suspended polyvinyl chloride, a mixture of plasticisers di-(2-ethylhexyl)phthalate, di-(2-ethylhexyl) sebacate, a complex metal-containing stabiliser - complex Ba-Zn stabiliser, filler - chalk, titanium dioxide, cellulose, lubricant - calcium stearate, pigments, polymer modifier - copolymer of vinyl chloride and vinyl acetate (VA-5) and a mixture of an oligomeric plasticiser based on a mixture of adipic or phthalic esters, n-butyl alcohol, 2-ethylhexanol and polypropylene glycol - component A with a surfactant which contains oxyethylated monoalkylphenol based on trimers of propylene - component B in ratio A:B equal to (11.5-18.23):1.

EFFECT: film material has low stickiness and hardness, high resistance to heat-and-light ageing while preserving physical and mechanical properties.

3 tbl

Polymer composition // 2425072

FIELD: chemistry.

SUBSTANCE: polymer composition contains suspended polyvinyl chloride or suspended polyvinyl chloride C-01 wastes, ester plasticiser dioctylphthalate or butylbenzylphthalate, tribasic lead sulphate, calcium stearate, stearic acid, chalk, soot, hexachlorobenzene, obtained from perchloroethylene production wastes, and if needed, chlorinated C14-C32 hydrocarbon fractions containing 45-52% chlorine and diphenylol propane.

EFFECT: improved physical and mechanical characteristics of insulation material, and high fungus resistance.

1 tbl

FIELD: chemistry.

SUBSTANCE: composition contains a mixture of styrenated p-cresol and an optional co-stabiliser. The composition is liquid at room temperature, has viscosity of less than 40 Pa·s (40000 cP) at 25°C, exhibits acid number less than 0.1 mg KOH/g, and contains 2,6-distyrenated p-cresol assaying at 70% minimum by GC area. The mixture also contains monostyrenated p-cresol and tristyrenated p-cresol, each present in concentration ranging from about 1 to about 15% by GC area based on total area of the styrenated p-cresol. The mixture of the styrenated p-cresol is obtained through reaction of styrene and p-cresol in molar ratio from 1.85 to 2.1:1, respectively. The reaction is carried out in the presence of an acid catalyst at temperature from 40 to 150°C. Said stabilising composition is added to the polymer compositions in an effective amount for stabilisation thereof.

EFFECT: obtained stabilising compositions have a liquid physical form at room temperature and can act as both low-volatile additives in polyurethane-type film materials and as compositions providing good stabilisation.

13 cl, 8 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: polymer film consists of a poly(meth)acrylate matrix, also containing a viscosity modifier based on cross-linked poly(meth)acrylates. The viscosity modifier has a two- or three-layer, "core-cladding" type structure and mean particle diameter of 10-150 nm, weight ratio of poly(meth)acrylate to viscosity modifier of 30-70:70-30, wherein the mean molecular weight of the matrix ranges from 80000 to 180000 g/mol. The polymer film also contains UV radiation absorbers and additional UV stabilisers selected from sterically hindered amines. Described also is use of a polymer moulded article for applying coating on other polymer moulded articles or for making high-quality and durable surfaces of substrate materials. The stabiliser for protection from UV radiation and weather impact of the poly(meth)acrylate based film, having a viscosity modifier, contains UV radiation absorbers selected from a group comprising benzotriazole type compounds in amount of 0.1-10% and triazine type compounds in amount of 0.0-5%, and UV stabilisers selected from sterically hindered amines in amount of 0.1-5% in terms of the weight of the film.

EFFECT: obtaining a film having high viscosity and a dull surface for ensuring high elasticity and low light reflection of articles.

15 cl, 1 tbl, 15 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a heterophase propylene copolymer which is β-nucleated, synthesis and use thereof, as well as tubes, layers in multilayer tubes and coatings on steel tubes made from said β-nucleated propylene copolymer. The heterophase propylene copolymer contains a propylene matrix (A) consisting of a propylene homopolymer or a propylene copolymer, and an elastomeric copolymer (B) containing propylene and at least another C2 and/or C4-C10 α-olefin. The elastomeric phase has characteristic viscosity measured in tetraline at 135°C equal to or less than 4.0 dl/g.

EFFECT: heterophase propylene copolymer is characterised by melt flow rate MFR2 (230°C) less than 0,7 g/10 min, high impact resistance at low temperatures, while maintaining high level of other properties; also, the material has relatively low melting point compared to standard heterophase propylene copolymers, which also improves properties of the disclosed material.

23 cl, 4 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing an antistatic agent for polymerisation of olefin through contact with the corresponding antistatic agent and a method for polymerising olefin. The method of producing an antistatic agent in form of a mixture of antistatic compounds, which contain at least one hydrogen atom bonded with a non-metallic heteroatom, with at least one metal alkyl in an amount which is sufficient for complete reaction with at least one hydrogen atom bonded with the heteroatom. During contact, the mixture of antistatic compounds and the metal alkyl are each present in concentration of at least 0.01 wt %. At least one of the components of the mixture of antistatic compounds has specific conductivity of at least 0.05 mcS/cm.

EFFECT: disclosed antistatic agent in form of a mixture of antistatic compounds for polymerisation of olefin exhibits considerably low deactivating action of a catalyst with improved specific conductivity and antistatic action.

14 cl, 2 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to thermoplastic material and a method of producing said material. The thermoplastic material contains a composition containing a thermoplastic resin, mineral or carbon-containing filler, an optional heat stabiliser and/or UV light stabiliser and/or lubricant and/or rheological property modifier and/or an organic impact-resistance modifier, as well as a comb-shaped polymer containing a polyalkylene oxide group grafted to an unsaturated ethylene monomer. The method involves mixture and subsequent extrusion of said composition components, where the comb-shaped polymer is added to the composition in form of a dry powder obtained at different steps of the process.

EFFECT: obtaining thermoplastic material with high impact resistance and retains satisfactory hardness.

15 cl, 5 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry and particularly to production of ozone-resistant rubber mixtures for making colour or white sidewalls of car and bicycle tyres, as well as for protective and decorative elements of sidewalls of truck and light-truck range of tyres. The colour polymer composition contains the following, wt %: isoprene rubber SKI-3 S or natural rubber-28.07-32.2; ethylene propylene triple rubber SKEPT-40 5.37-16.84; non-oil filled butadiene styrene rubber SKS-30ARK 11.23-16.1; curing agents: rhombic sulphur 1.12-1.62; sulphenamide TS 0.27-0.84; thiuram D 0.06-0.27; filler materials: wollastonite with a needlelike structure 10.73-22.459; titanium white 2.81-5.37; zinc white 2.81-5.37; white soot BS-120 11.23-21.46; auxiliary ingredients: phthalic anhydride 0.16-0.28; stearic acid 1.07-1.68; optional colouring pigment 0-0.56; mixture of fullerenes C50-C92 0.005-0.011.

EFFECT: composition improves physical and mechanical properties and fatigue strength of tyre sidewalls, as well as wear-resistance and heat ageing resistance due to atmospheric factors and operation at high temperatures.

1 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: described is an aqueous solution of an optical brightener, containing (a) 10-50 wt % optical brightener of formula (I): where: M is hydrogen, an alkali metal atom, ammonia or an amine cation; R1 is hydrogen, C1-C4-alkyl or C2-C4-hydroxyalkyl; R2 - C1-C4-alkyl which can be substituted with -CN- or -CONH2-group or C2-C4-hydroxyalkyl; or R1 and R2 together with a nitrogen atom close a morpholine ring; (b) 0.5-9 wt % polyvinyl alcohol, having degree of hydrolysis 71-85.2% and Brookfield viscosity 3-5.4 mPa·s; and (c) water. The invention also describes use of said solution in a coating composition for paper and a method of obtaining paper coated with said coating composition.

EFFECT: disclosed aqueous solutions of optical brighteners have low viscosity, can be used directly by paper manufacturers and can be fed by a pump directly into the coating composition to provide a coating on paper with high whiteness.

10 cl, 2 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: 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.

EFFECT: improved antifriction properties of the composition prolong the service life of articles made from said material.

2 tbl

Polymer composition // 2443731

FIELD: chemistry.

SUBSTANCE: 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.

EFFECT: invention increases the service life of the polymer composition in oil and gas aggressive media.

3 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: the invention relates to car tires, to tire belt in particular. The tire belt contains a rubber composition based, at least, on a isoprene elastomer, reinforcing material, suturing system and anti-oxidant. The anti-oxidant contains 4,4'- bis(alkylamino)triphenylamine, corresponding to the formula: where R1 and R2 can be identical or different, each of them represents a branched or an unbranched alkyl residue comprising from 1 to 12 carbon atoms, or a cycloalkyl group comprising from 5 to 8 carbon atoms.

EFFECT: increases fatigue resistance and prevents crack formation in the tire belt.

15 cl, 2 dwg, 2 tbl, 2 ex

FIELD: carbon materials.

SUBSTANCE: invention concerns production of polymer material, which can be employed to manufacture construction-destination porous carbon articles. Polymer composition is filled with hardened phenol-formaldehyde resin and powder-like vanadium complex VO(C36H49O5N2) formed when vanadium is recovered from exhausted process solutions produced in processing of ferrous-metallurgy charge slags as product of reaction between metavanadate and bis-amino-phenol-formaldehyde oligomer. Composition also includes lubricant. Proportions of constituents are the following, wt %: pulverized bakelite 36-43.8, hardened phenol-formaldehyde resin 36-43.8, vanadium complex 10-25, and lubricant 2.4-3.0.

EFFECT: increased strength of porous carbon articles.

1 tbl, 7 ex

Up!