Thermoplastic elastomeric composition and method for its preparing

FIELD: chemistry of polymers, chemical technology.

SUBSTANCE: invention relates to a method for preparing thermoelastomers based on polyolefins and triple ethylenepropylene-diene rubber. The composition is prepared by the complete dynamic vulcanization of mixture of the following components, mas. p. p.: TSEPDR, 100.0; polypropylene, 25-60; low density polyethylene, 1-10; oil, 20-100; sulfur-accelerating vulcanization comprising the following components: sulfur, 0.1-2.0; thiuram, 0.1-1.5; Altax, 0.1-0.5; stearic acid, 0.1-20.0; zinc oxide, 0.5-8.0, or peroxide vulcanization comprising the following components: dicumene peroxide, 0.1-2.0; bis-maleimide, 0.1-2.5; novolacs alkylphenolformaldehyde resin, 0.2-10.0; organic phosphite, 0.02-1.0; pigment, 0.01-2.0; filling agent, 0.1-50.0; antioxidant, 0.1-2.0, and phthalate plasticizers, 0.5-10.0. The content of oil, polyethylene, phthalate plasticizers, novolacs resin and polypropylene is bound by the ratio. Invention provides enhancing thermostability, resistance against multiple temperature effects during the technological processing, resistance against harmful catalytic effect of metal with transient valence and improving the ecology of the process. Invention can be used in making elastic, atmosphere-resistant materials used in building industry, cable, automobile and light industries and in manufacturing different goods for consumption.

EFFECT: improved preparing method, valuable technical properties of composition.

30 cl, 4 tbl, 23 ex

 

The invention relates to polymer industry, and specifically to obtain thermoplastic elastomers based on polyolefins and ternary ethylene-propylene-diene rubber, and can be used for the manufacture of flexible, weather-resistant materials in construction, cable, automobile, light industry, the production of various consumer goods.

Known thermoplastic composition based on synthetic CIS-1,4-isoprene rubber and polyolefin comprising zinc oxide, stearic acid, vulcanization accelerator and sulfur (patent RU №2067103, IPC 6 08 L 9/00, 1996).

Known thermoplastic composition comprising a synthetic CIS-1,4-isoprene rubber, a polyolefin is polypropylene of low pressure, zinc oxide, stearic acid, antioxidant - N-isopropyl-N1-phenyl-n-phenylenediamine, sulfenamid C - N-cyclohexyl-2-benzothiazolyl-sulfenamid and sulfur (patent RU №2185397, IPC 6 08 L 9/00, 2002).

Protected songs mentioned patents, are used in the manufacture of goods and products, but they are characterized by low weather resistance, insufficient resistance to thermo-oxidative degradation, as well as lack of ability to process waste.

This is due to the use of these rubber compositions with a high content of unsaturated bonds, and is also fast, unmanaged course of the vulcanization process in the conditions when the composition is not over relaxation processes that reduce internal stress.

As follows from the patent RU No. 2067103, a thermoplastic composition consists of: rubber SKI 75,0 parts by weight, of polypropylene of 25.0 parts by weight, zinc oxide and 3.0 to 5.0 parts by weight, stearic acid 1.0 to 2.0 parts by weight, sulfur of 0.2-0.6 parts by weight, of a vulcanization accelerator of 3.0 to 5.0 parts by weight, the antioxidant is 0.8-1.0 parts by weight of the Composition obtained when 185-190°C.

The main disadvantages of specified composition are the following:

- one double unsaturation rubber SKI and, hence, low stability to oxidative degradation;

- introduction of an antioxidant only in the early stages of mixing, which by the end of the process of obtaining compositions antioxidant almost spent and at high temperatures (185-190° (C) in the last stages of the composition is subject to considerable influence of oxygen.

These phenomena cause the low resistance of the obtained composition to external influences.

Thermoplastic composition according to patent RU 2185397 characterized by the following composition: rubber SKI 10,0-25,0 parts by weight, devulcanized (crumb rubber) 25,0-of 65.0 parts by weight, the polyolefin 25,0-of 65.0 parts by weight, zinc oxide in 5.0 parts by weight, stearic acid of 2.0 parts by weight, sulfur of 0.35 parts by weight, antioxid the NT to 2.0 parts by weight The composition is obtained from the temperature 190-205°C.

The specified composition is also inherent in the above-mentioned disadvantages. However, because replacement parts rubber SKI with a high degree of unsaturation in the vulcanizer, with almost no unsaturation and contain high levels of antioxidant above disadvantages are substantially reduced.

Nevertheless, obtained by this technology, the composition has insufficient mechanical properties, and low strength and low elongation.

In addition, the use of rubber with a high degree of unsaturation imposes restrictions on methods of obtaining thermoplastic materials, namely the introduction of all components simultaneously, as in this case, at high temperatures (180-200° (C) obtaining a composition may flow many undesirable reactions with double bonds, a slowing of the process of softening rubber, accelerated consumption of antioxidant.

Known methods slower processes of vulcanization using alkylphenolethoxylates resin (AFF) (patent RU №2167895, 2001, Thugwane, Acuautla, "Rubber and rubber", 1998, No. 4, p.7-11).

In the technical solutions disclosed in these sources, managed largely to eliminate the aforementioned disadvantages associated with the dynamics of the process vulk the organization, however, this led to the introduction of significant quantities of AFF, which, in turn, leads to deterioration uprugoopticheskii properties and weather resistance. The change in mechanical properties associated with a significant consumption AFF on reaction with the functional groups of the rubber and thermoplastic, i.e. not the target flow AFF, as well as with irrational enter AFF in varying the time interval of the process of combining or vulcanization.

Composition on the basis of a patent RU 2167895 include: unsaturated rubber is 100 parts by weight, alkylphenolethoxylates resin is 5.0 to 15.0 parts by weight, zinc oxide 1.0 to about 30.0 parts by weight, stearic acid and 1.0 parts by weight, carbon black 50,0-60,0 parts by weight, halogenated petroleum resin with a chlorine content 18-67% to 1.0 to 15.0 parts by weight of

The disadvantage of this arrangement is a significant amount of phenol-formaldehyde resin and zinc oxide to create the necessary vulcanization rate of the saturated rubber. And this leads to the possibility of occurrence during operation of the secondary reactions causing increased stiffness of the composition, loss of elasticity and the impossibility of recycling. Use the specified composition as the vulcanizing agent is only one of a phenol-formaldehyde resin in the amount causes only a single application, for example, for adhesi the A.

It is also known the use of alkylphenolethoxylate resins as vulcanizing agents upon receipt of thermoplastic materials based on rubber, SKEPT and low pressure polyethylene (Thugwane, Acuautla, "Rubber and rubber", 1998, No. 4, p.7-11). In this work it was shown that the resin vulcanization is quite comparable with sulfuric and peroxide vulcanization to ensure some physico-mechanical properties.

However, the time course of the vulcanization process only at the expense of the resin is significantly higher (40 min)than in the same process when sulfur vulcanization, which in this case is just 7-7,5 min. This fact significantly limits the application of only the resin vulcanization upon receipt of thermoplastic materials on modern high-efficiency equipment.

In addition, with the increasing content of the agents of the resin vulcanization 2 times simultaneously reduced strength and elongation (as it follows from the above source) thermoplastic materials. When sulfur vulcanization of falling while uprugoopticheskii properties not observed.

Thus, in the above works have not resolved the question of choosing the optimal type of the curing process upon receipt of thermoplastic materials.

The closest to the technical nature of the claimed invention and the achieved technical result when it is used, in part of the composition is a thermoplastic elastomer composition based on polyolefins and ethylene-propylene-diene oil-filled rubber.

Thermoplastic elastomer composition, in accordance with this invention, obtained by the complete dynamic vulcanization, consists of (A) polypropylene in the number 12-39 wt.%, (B) a low density polyethylene in an amount of 1-8 wt.%, (C) ethylene-propylene-diene oil-filled rubber in the amount of 60-80 wt.%, containing 25-150 parts by weight of oil (M) 100 parts by weight of rubber, with the proportion of particles of a vulcanized rubber with a size equivalent diameter greater than 2 μm is 2-15%, and the ratio (WB+WM)/WAis in the range of 0.6 to 3.0, where WB- weight of low density polyethylene, WM- oil weight, WA- weight of polypropylene, and the content in the composition of the product, insoluble in o-xylene at a temperature of 144°With the extraction time of 24 h is 95-100°% of the content of the original rubber (patent RU 2069217, IPC 6 08 L 23/16, 1993).

This composition is free from major disadvantages mentioned technical solutions, representing the prior art. However, the obtained composition is not sufficiently resistant to thermo-oxidative degradation, aging in the process of operation and other external influences, for example,to the catalytic effect of metals of variable valency, in addition, it does not have the necessary capability for multiple processing.

Objective behind the present invention, part of thermoplastic elastomer composition is a composition in which basically eliminated the drawbacks of the known technical solutions.

Technical result achieved when using the claimed invention is that the composition is characterized by high thermal stability, resistance to long-term operation, harmful to the catalytic effect of metals of variable valency, resistance to repeated thermal stress during repeated processing, as well as the optimal supramolecular structure. In the end, it promotes the use of secondary waste, and involve them in the economic turnover, and improves environmental safety of the proposed process.

The task underlying the present invention in part of the composition, with the achievement of the technical result is solved in that thermoplastic elastomer composition based on polypropylene, low density polyethylene and ethylene-propylene-diene rubber (Sept) with components of sulfur vulcanization, on the basis of which creates the I composite material, obtained by dynamic vulcanization of a mixture that includes (parts by weight):

Sept 100,0, polypropylene 25,0-60,0, polyethylene 1,0-10,0, oil 20,0-100,0, phthalate plasticizers 0.5 to 10.0, sulfur 0,1-2,0, thiuram 0,1-1,50, altax of 0.1 to 0.50, stearic acid of 0.1-2.0, zinc oxide 0,5-8,0, Novolac alkylphenolethoxylates resin 0,2-10,0, organic postit 0,02-1,0, pigment is 0.01 to 2.0, the filler of 0.1 to 50.0, the antioxidant is 0.1 to 2.0, phthalate plasticizers 0.5 to 10.0, and instead of sulfur, vulcanization accelerator can be used peroxide vulcanization on the basis of: peroxides decumana of 0.1-2.0 parts by weight and bis-maleimide 0.1 to 2.5 parts by weight, the content parts by weight of oil (Cm), low-density polyethylene (XLPE), Palatnik plasticizers (TFP), Novolac alkylphenolethoxylates resin (SPS) and polypropylene (Spp) to 100.0 parts by weight of Skepta connected by the relation: (Cm+EIT+TFP+SPS)Spp and is in the range 0.4 to 2.5;

and also the fact that as oil is used or paraffin oil, or spun oil or industrial oil, or oil MO-S;

and also the fact that as Novolac alkylphenolethoxylates resin is used alkylphenolethoxylate resin containing not less than 7% of the methylol groups;

and also the fact that as an organic phosphite used or tennispalatsi, or postit P-24, or polytopic based on diphenylolpropane, or polytopic on the Snov, diphenylolpropane and pentaerythritol;

and also the fact that when conducting peroxide vulcanization as components of the vulcanization use peroxide Dicumyl in the amount of 0.10 to 2.0 parts by weight and bis-maleimide in the amount of 0.10 to 2.5 parts by weight;

and also the fact that as Palatnik plasticizers used or dioctylphthalate, or didodecyl, or dibutyl phthalate, or dinonylphenol.

The task underlying the present invention in terms of method of obtaining thermoplastic elastomer composition is the development of technologies of production of the composition, which would be free from the aforementioned shortcomings of known technical solutions, the technical result of the proposed technology is including the ability to make multiple processing of the composite material, with a significant increase in productivity of the manufacturing process, and the possibility of wide variation modes of receiving these materials, namely:

- the introduction of the components of the composition at different stages of the technological process with the use of modern high-performance equipment, for example, twin-screw extruder with a continuous flow of original components;

- the introduction of components simultaneously using equipment periodic dei is the major, providing a dynamically vulcanized thermoplastic composition.

With the use of such equipment can provide a more flexible and manageable monitoring of time, temperature and mechanochemical reactions by mixing the starting components.

The task underlying the present invention in part of the method of producing a thermoplastic elastomer composition, with the achievement of the technical result, is solved in that in the known method of obtaining a thermoplastic elastomer composition by full dynamic vulcanization of a mixture containing polypropylene, low density polyethylene and ethylene-propylene-diene rubber, including the loading of the aforementioned components in the mixer, mixing them within a specified time, temperature and speed of rotation of the rotors of the mixer, the input of the powder mixture vulcanizing agents, and stirring the resulting mixture for a specified time and at a given temperature, the subsequent unloading of the obtained composition, the cooling and granulation, the mixture of ethylene-propylene-diene rubber exercise with flatname plasticizers, part of a set dose Novolac alkylphenolethoxylates resin, antioxidant and oil, at a given temperature and for a specified time after mixing entered is komponentov in the resulting mixture is additionally injected polypropylene, low-density polyethylene, filler and pigment, mix the components at a given temperature and for a specified time, after which the resulting mixture is injected vulcanizing component group, including vulcanizing agents and vulcanization accelerators, the remaining portion of a given dose Novolac alkylphenolethoxylates resin and organic postit, stirred the mixture at a given temperature and for a specified time, the degree (L) irreversibility from the equilibrium, a fully structured state compositions are not suitable for recycling, is determined from the relation:

L=A·τind·ξ/T·ΔS,

where a is the affinity, chemical potential equilibrium process structuring;

τind - induction period when thermal-oxidative and mechanochemical degradation of polypropylene matrix;

ΔS is the entropy change during the formation of equilibrium, stitched patterns, in the process of technological cycle, is determined by the segmental mobility of macromolecules;

ξ - the relative content of the matrix, i.e. polypropylene, this composition is in the range of 0 to 1;

T - treatment temperature in degrees Kelvin,

- and also that part of the given dose Novolac alkylphenolethoxylates resin is ,1-5,0 parts by weight of by 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that the antioxidant is administered in an amount of 0.1 to 2.0 parts by weight on to 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that as an antioxidant use spatial-employed phenols, or bisphenol, or thiobisphenol, or aromatic amines;

and also the fact that stearic acid is administered in an amount of 0.1 to 2.0 parts by weight per 100 parts by weight of ethylene-propylene-diene rubber;

and also the fact that the mixing entered the first part of the set dose Novolac alkylphenolethoxylates resin, antioxidant, oil, Palatnik plasticizers and ethylene-propylene-diene rubber is carried out for 2-3 minutes at a temperature of 150-180°C;

and also the fact that as oil is used or paraffin oil, or MO-S, or industrial oil, or spun butter;

and also the fact that the dose of injected oil is 20,0 in 100.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that the dose of injected polypropylene was 25.0-60.0 sec by 100.0 parts by weight of parts by weight of ethylene-propylene-diene rubber;

and also the fact that the dose of injected polyethylene low density is 1.0 to 10.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that after the introduction of polypropylene, low density polyethylene, filler and pigment education is asuza the mixture is stirred for 3-4 minutes at a temperature of 190-210° C;

- and that for sulfur vulcanization as vulcanizing agents use sulfur vulcanization accelerators, stearic acid and zinc oxide, and for peroxide vulcanization use peroxide Dicumyl and bismaleimide;

and also the fact that the dose used sulfur is 0.1 to 2.0 parts by weight on to 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that the dose used zinc oxide is 0.5 to 8.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that as accelerators of the vulcanization process used thiuram and altax or captax;

and also the fact that the dose used turama is 0.1 to 1.5 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that the dose used altaxe or kaltakci is 0.1 to 0.5 parts by weight to 100.0 ethylene-propylene-diene rubber;

- and what for peroxide vulcanization dose used bis-maleimide is 0.1 to 2.5 M.Ch. 100 M.Ch. rubber;

- and what for peroxide vulcanization dose used peroxide of Dicumyl is 0.1 to 2.0 parts by weight on to 100.0 parts by weight of ethylene-propylene-diene rubber;

- and that mixing the mixture formed after the introduction of the vulcanizing component groups and the remaining portion of a given dose Novolac alkylphenolethoxylates resin assests the Ute for 5-6 minutes at a temperature of 190-210° C;

and also the fact that as an organic phosphite use or tennispalatsi, or postit P-24, or polytopic in the amount of 0.02 to 1.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that the use as filler or carbon black, or chalk or kaolin in an amount of 0.1-50 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that the quality of the pigments used or titanium dioxide or iron oxide pigments, or phthalocyanine pigments in an amount of 0.01 to 2.0 parts by weight on to 100.0 parts by weight of ethylene-propylene-diene rubber;

and also the fact that as Palatnik plasticizers used dioctylphthalate or didodecyl in the amount of 0.5 to 10.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

Technical result achieved, as noted above, in the process of implementation of the proposed composition, due to including the simultaneous introduction of all components of the composition in the mixer unit periodic actions used to dynamically vulcanized thermoplastic compositions for the regulation of time, temperature and mechanical force in the mixing chamber.

In addition, one of the distinguishing features of the claimed composition is the high resistance of the obtained composite to various atmospheric factors to the harmful effects of metals of variable valency, as well as the ability of the resulting composition to multiple processing at elevated temperatures (up to 11 cycles), which significantly improves the ecology of the environment.

Creating, in accordance with the present invention, thermoplastic elastomer compositions with such properties due to the identified authors unexpected effect polyfunctional interaction/impact of methylol groups alkylphenolethoxylates resin with the rubber at the time of his softening up the vulcanization process and synergies alkylphenolethoxylates resin with organic postiton for deactivation of the catalytic effect of metals of variable valence, with a joint introduction alkylphenolethoxylates resin and organic phosphite after vulcanization of the rubber at the stage of its alignment with PP.

You know the part alkylphenolethoxylates resin in the structuring process (vulcanization) of the rubber at elevated temperatures (Koshelev FF and other General technology of rubber. - M., 1978, s-160). The effectiveness of vulcanization is determined by the presence in alkylphenolethoxylates resin of methyl and methylene groups that react with the double bonds of the rubber, forming a cross connection scheme:

where R is the residue of diene whom onanti Sept;

R1- tertbutyl or tridactyl;

R2is a methylene group;

R3- methylol group.

However, at high temperature thermoplastic materials (180-200° (C)in the presence of oxygen in the kinetic law of the case there is separation of the rolling of a hydrogen atom from hydroxide aromatic nucleus alkylphenolethoxylates resin with the formation of radical, ie,

where R is the remainder of the diene components SKEPT;

R1- tertbutyl or tridactyl;

R2is a methylene group;

R3- methylol group.

These inactive radicals ArO°present at the time the softening of the rubber, i.e. at break macrocephaly last, react with fragments of macromolecules rubber and thereby prevent their recombination and the development of thermo-oxidative degradation on the kinetics of reactions with degenerate branching.

As previously established (Trosman G.M., and others, USSR author's certificate No. 162657, 1964), oligomeric molecules of a phenol-formaldehyde resins at high temperatures, penetrating and penetrating between macrocephaly polymer, reduce intermolecular interactions, leading to increased segmental mobility of the macromolecules and more active inhibition thermocycle the nutrient destruction. The formation of low spatial-employed radicals ARO°that can accumulate up to a certain critical value (depot inhibition) and subsequent revisions are effective to inhibit the oxidation process. Introduction Novolac alkylphenolethoxylates resin contributes to the increase in segmental mobility of macromolecules, i.e. plasticizing effect.

The authors also been developed and proposed the ratio between the plasticizing additives and component, which add rigidity to thermoplastic composition, namely:

TFP+Cm+Saff+Spnp/WBS=0,4-2,5,

where TFP - content platogo plasticizer;

Cm - oil content;

Caff content of Novolac phenol-formaldehyde resin;

Spnp - concentration of low-density polyethylene;

WBS content of polypropylene.

The content of these components is shown on 100 parts by weight of rubber.

The proposed correlation makes it possible to optimize the composition of the proposed thermoplastic composition.

The efficiency of the proposed use of the composition in various fields of national economy is determined by its ability to multiple processing to improve environmental safety, high stability of the composition to thermal oxidative degradation at elevated those whom perature, weather resistance, including to the harmful effects of metals of variable valency, for example, when the contacts of products based on the proposed composition with the specified metals.

For multiple processing proposed composition requires the preservation of dwuhfaznosti patterns during repeated thermal and mechanical influences.

It is known that the structure of thermoplastische consists of a matrix of polypropylene, which is distributed domains vulcanized rubber. Such a system is in a nonequilibrium state, as connecting macrocopy polypropylene embedded in the domains of rubber and the crystalline polypropylene, have initially a sufficient length of the segment and the free energy (chemical potential)to withstand thermal and mechanical stress (fluctuations) in the process.

However, over time, dependent on the composition, the equilibrium assumption disappears. Polypropylene and rubber form a uniform crosslinked structure, the length of the segment migratory chains of PP decreases sharply, and the composition thus loses the ability to process.

To determine the ability of the proposed composition to multiple processing authors also developed and proposed a criterion of irreversibility patterns (L) Tap, is largely the distance from the equilibrium state. The specified criterion (L) represents the following dependency:

L=A·τind·ξ/T·ΔS,

where a is the affinity, chemical potential equilibrium process structuring;

τind - induction period when thermal-oxidative and mechanochemical degradation of polypropylene;

ΔS is the entropy change during the formation of equilibrium, custom made patterns in the process of technological cycle, defined segmental mobility of macromolecules;

ξ - the relative content of the matrix, i.e. polypropylene, this composition is in the range of 0-1;

T - treatment temperature in degrees Kelvin,

The above formula is obtained using theory of irreversible processes Pregaine (Pregain, Pgender. Thermodynamic theory of structure, stability and fluctuations. - M., Peace, s) and one of the authors in this direction (Gtwoman and other kinetic laws of thermo-oxidative degradation. Proceedings of VNIIPAK, M., 1981-1982, pp. 102-108), and is able to qualitatively and quantitatively assess the ability of the proposed composition for multiple processing.

As follows, the degree of mobility of the system is determined mainly by the change of entropy ΔS and the induction period at thermooxidation of polypropylene (τind), remained as the major members of the equation And, T ξ are for a given composition and temperature constant values. The entropy change due to a change in mobility, first of all, macrocephaly thermoplastic, the length of the migratory chain.

In the course of further processing and use of the product of this composition there is a spontaneous process, characterized by the increase of entropy (i.e. growth ΔS), structured walk-through polypropylene chains and achieve the degree of structuring (stitching) such that the distance between the mesh nodes and domains stitched rubber become comparable, disappear rheological mobility and dwuhfaznosti patterns, and such a composite material will not be able to re-processing and operation.

Qualitative analysis of the proposed formula shows that to increase to multiple processing and improve the functional properties of the resulting composition is necessary to inhibit the spontaneous growth of entropy and increase the mobility of migratory chains PP.

This effect is achieved by introducing active, plasticizer, which increase the segmental mobility of migratory chains of polypropylene and together with thermo-oxidative degradation inhibitors increase the resistance to thermal-oxidative processes and mechanical impacts the education. Without such additives arising in the composition radicals contribute to accelerated process of structuring PP and rubber.

The results of the calculation of the degree of irreversibility for some examples of the proposed composition, in comparison with the prototype presented in table 4.

The induction period for the proposed compositions and prototype without the rubber SKEPT and vulcanizing agents, defined on the side of the unit for absorption of oxygen at 300 mmHg and 190°C.

The change of entropy was determined as a function of the number of breaks in the polymer chain of the polypropylene on the relative change in viscosity inhibited polypropylene at 190°C.

ξ defined as the relative content of the polypropylene in the composition. The degree of reversibility (L) was determined in arbitrary units of time, since the value of a and T were used as constants in these particular calculations. As can be seen from table 4, the proposed compositions have a degree of irreversibility greater than that of the prototype, and therefore able to more multiple processing, and they are more resistant to different temperature influences. For the calculation of the formula of absolute values and their quantitative comparison requires additional experimental data with the use of sophisticated, instrumental methods, for example, microcalorimetric the sky dimension nuclear magnetic resonance and others, which will be used in further studies.

Another surprising finding of the effect was that as the plasticizing agent, in combination with butter and low-density polyethylene, can be used Novolac alkylphenolethoxylates resin in accordance with the above ratio.

The authors found that the role of the Novolac alkylphenolethoxylates resin is not only the reaction of methylol and hydroxide groups with emerging radicals that contribute to structuring, and reduction of intermolecular interaction between polymer chains due to the penetration of the oligomeric molecules Novolac alkylphenolethoxylates resin Mizutani space. In addition, there is a synergy with the simultaneous introduction of organic phosphite and Novolac alkylphenolethoxylates resin. This synergy is evident in the decontamination of harmful effects of salts of metals of variable valency on thermal-oxidative degradation of the polymer.

The production of the claimed composition can be phased introduction of components on standard equipment, and with the simultaneous introduction of the components on the equipment periodic steps, providing dynamic process of volcanic mountain rage the promotion.

The effectiveness of the claimed composition and its preparation are illustrated by examples of their implementation.

Example 1. In double closed mixer with acepsimas Cams at a temperature of 180°and the speed of rotation of the rotor 90 rpm is entered on 100 parts by weight of powdered ethylene-propylene-diene rubber, SKEPT-50 (TU 38103252-92) - 25,0 parts by weight of polypropylene brand 01130 (TU 2211-020-00203521-96), and 1.0 parts by weight of low density polyethylene brand 15803-020 (GOST 16337-77), to 20.0 parts by weight of paraffin oil, from 0.1 parts by weight of sulfur, 0.1 to parts by weight of tetramethylthiuramdisuphide (thiuram), 0,1 parts di-(2 benzothiazolyl)-disulfide (altax), of 0.1 parts by weight of stearic acid, 0.5 to parts by weight of zinc oxide, and 0.2 parts by weight of Novolac alkylphenolethoxylates resin (TU 6-10-1220-80), and 0.2 parts by weight of tennispalatsi, of 0.01 parts by weight of pigment red zhelezooksidnoj (GOST 18172-80), of 0.1 parts by weight of chalk and 0.1 parts by weight of [bis(5 methyl-3 tertbutyl-2 oxyphenyl) methane (2246)]and 0.5 parts by weight of dioctylphthalate. When mixing the components using siteplease Cams undergo deformation with intense shear force that leads to the accelerated flow in the mixing process of dynamic vulcanization. The process of mixing lasts 10 minutes Later composition, not being cooled through a closed volume of the extruder, optionally mixed and granulated (190`-200`). Physico-mechanical parameters obtained treatment the samples are given in table 2 and 3.

Example 2

Technologically, the production of a composition similar to example 1, however, the loading of the components occurs in stages, namely: first, in a rotary mixer 100 parts by weight of Skepta introduced to 100.0 parts by weight of industrial oils, and 2.0 parts by weight of Novolac alkylphenolethoxylates resin to 5.0 parts by weight of yellow iron oxide pigment, to 50.0 parts by weight of chalk, and 2.0 parts by weight of bisphenol 2246 and at a temperature of 180°C for 3 min intensively with the course of mechanochemical processes mixed. Later in the mixer is introduced to 2.0 parts by weight of sulfur and 0.5 parts by weight of 2-mercaptobenzthiazole (captax), and 2.0 parts by weight of stearic acid, to 8.0 parts by weight of zinc oxide and 1.5 parts by weight of teorama, and 10.0 parts by weight of didodecyl and intensively stirred for 1-2 minutes Then we introduce 60 parts by weight of polypropylene, 10 parts by weight of low density polyethylene, 5 parts by weight of Novolac alkylphenolethoxylates resin, 1 parts by weight of 2,6 di-tri-butyl-4 methylphenylene ether pirokatekhinovyi acid and stirred for 8 minutes at a temperature of 180°C. Further from the mixer without cooling the composition to the extruder, and the temperature 190-200°it granulation and cooling. The results of the tests and the composition presented in table 2 and 3.

Example 3.

In the mixer periodic operation at 100°loaded With 100 parts by weight of Skepta, 60,0 parts by weight of oil, and 2.5 parts by weight of Novolac alkylphenolethoxylates with the Ola, to 1.0 parts by weight of titanium dioxide (GOST 9808-84), and 1.0 parts by weight of N-isopropyl-N'-phenyl-pphenylenediamine (4010 NA), to 5.0 parts by weight of dioctylphthalate, to 25.0 parts by weight of chalk. The composition is mixed for 20 minutes the mixture is fed to rollers, where additional mixing and preparation for loading into the granulator. Next, the granulated composition, talkies to prevent adhesion and cooled. Then the mixture is fed into an intensive mixer, where temperatures up to 180°it happens combination from 42.0 parts by weight of polypropylene, of 5.0 parts by weight of low density polyethylene, and 1.0 parts by weight of sulfur, and 0.8 parts by weight of teorama, of 0.3 parts by weight of altaxe, and 1.0 parts by weight of stearic acid, about 4.0 parts by weight of zinc oxide and 2.5 parts by weight of Novolac alkylphenolethoxylates resin, and 0.6 parts by weight of phosphite P-24. Mixing occurs within 5 minutes Then the composition passes through the extruder at 200°With, at a speed of screw rotation of 100 rpm, cooled and granulated. The results of the tests and the composition presented in table 2 and 3.

Example 4

In the twin screw extruder was introduced shredded ethylenepropylene rubber, SKEPT-50, and 100 parts by weight of rubber to 25.0 parts by weight of polypropylene, and 1.0 parts by weight of polyethylene, 20 parts by weight of industrial oils, of 0.1 parts by weight of Novolac alkylphenolethoxylates resin and 0.5 parts by weight of dioctylphthalate, of 0.1 parts by weight of titanium dioxide, 0.1 to parts by weight of bisphenol 2246. Mixing was carried out at a temperature of 185°C. the donkey cooling and pelletizing the resulting mixture was fed into the extruder and was combined with 200° With from 0.1 parts by weight of peroxide of Dicumyl, of 0.02 parts by weight of phosphite P-24, of 0.1 parts by weight of Novolac alkylphenolethoxylates resin, 0.1 to parts by weight of bis-maleimide. The results of the tests and the composition shown in table 2 and 3.

Examples 5-6.

The composition was obtained analogously to example 4. The compositions and the results of their tests are given respectively in table. 2 and 3. However, as fillers used carbon black.

Example 7.

The composition was obtained in accordance with example 4 of the patent of the Russian Federation No. 2069217. The composition and test results are shown respectively in table. 2 and 3.

Example 8.

The composition was obtained analogously to example 3. The composition and test results are given in table. 2 and 3.

Example 9.

In a Brabender mixer at a temperature of 185°introduced ethylene-propylene-diene rubber and forth on 100 parts by weight of Skepta was introduced to 20.0 parts by weight of oil, and 2.0 parts by weight of phenolic antioxidant 2246. Was stirred for 2 min, then was introduced to 1.0 parts by weight of stearic acid, and 3.0 parts by weight of zinc oxide, and 1.0 parts by weight of sulfur, and 0.8 parts by weight of turama and 0.5 parts by weight of dioctylphthalate, of 0.3 parts by weight of captax, and 2.5 parts by weight of Novolac alkylphenolethoxylates resin, stirring for 1 minute Then introduced 42 parts by weight of polypropylene, of 5.0 parts by weight of low density polyethylene, and 2.5 parts Novolac alkylphenolethoxylates resin, and 0.4 parts by weight of polyphosphate, 0,1 iron oxide red pigment, and 2.0 parts by weight of the spacecraft is Lina, mixing - 7 minutes the test Results and the composition shown in table 2 and 3.

Example 10.

The composition was obtained analogously to example 9. The composition and test results are given in table. 2 and 3.

Examples 11-14.

Compositions were obtained analogously to example 4. However, for examples 13 and 14 Novolac alkylphenolethoxylates resin introduced fully in one stage together with rubber. The composition and test results are given in table. 2 and 3, respectively.

Examples 15-16.

Composition was prepared analogously to example 1. The composition and test results are given in table. 2 and 3.

Example 17.

In a Brabender mixer at a temperature of 185°introduced ethylene-propylene-diene rubber (Sept) and then to 100 parts by weight of Skepta was introduced by 60.0 parts by weight of paraffin oil, and 2.0 parts by weight of aromatic amine 4010 NA, and 2.0 parts by weight of Acipenseridae resin, to 42.0 parts by weight of polypropylene, and 2.0 parts by weight of low density polyethylene, 0.1 pigment iron oxide red, and 0.5 parts by weight of didodecyl. Then was introduced to 1.0 parts by weight of peroxide of Dicumyl, to 1.25 parts by weight of bis-maleimide. Mixing 8 minutes the Composition and test results are given in table 2 and 3.

Example 18.

In a Brabender mixer at 185°introduced ethylene-propylene-diene rubber and forth on 100 parts by weight of rubber was introduced by 60.0 parts by weight of spun oil, and 2.0 parts by weight of Novolac alkylphenolethoxylates resin, 0.1 to parts by weight of pigment is lesioning yellow, to 1.0 parts by weight of carbon black, and 2.0 parts by weight of neozone D, 42,0 parts by weight of polypropylene and 2.0 parts by weight of low density polyethylene. Mixing 7 minutes Later were injected with 0.4 parts by weight of captax, and 1.5 parts by weight of sulfur, and 1.0 parts by weight of teorama, to 5.0 parts by weight of zinc oxide and 0.5 parts by weight of dioctylphthalate. Mixing 8 minutes the Composition and test results are presented in table. 2 and 3.

Example 19.

In a Brabender mixer at 185°introduced ethylene-propylene-diene rubber and forth on 100 parts by weight of rubber was introduced to 100.0 parts by weight of oil, and 2.5 parts by weight of Novolac alkylphenolethoxylates resin, and 1.0 parts of titanium dioxide and 0.5 parts by weight of dioctylphthalate, and 1.0 parts by weight of bisphenol 2246, to 42.0 parts by weight of polypropylene, and 1.0 parts by weight of low density polyethylene. Mixing 7 minutes Later was introduced to 1.0 parts by weight of sulfur, and 0.8 parts by weight of teorama, of 0.3 parts by weight of altaxe, and 1.0 parts by weight of stearic acid, and 3.0 parts by weight of zinc oxide and 2.5 parts by weight of Novolac alkylphenolethoxylates resin, and 1.0 parts by weight of polyphosphate based on bisphenol. Mixing 8 minutes the Composition and test results are given in table. 2 and 3.

Example 20.

The composition was prepared analogously to example 19. The composition and test results are presented in table. 2 and 3.

Example 21.

The composition was prepared analogously to example 19. The composition and test results are presented in table. 2 and 3.

Example 22.

The composition was prepared analogously to example 19. Composition composition and and the test results are presented in table. 2 and 3.

Example 23.

The composition was prepared analogously to example 19. However, instead of the pigment was injected copper chloride as a catalyst of oxidative processes. The composition and test results are given in table. 2 and 3.

As can be seen from the table. 2 and 3, due to the declared essential features achieved the task improved the original physical and mechanical properties, is considerably increased stability obtained by dynamic vulcanization of the compositions of thermoplastic elastomers to heat and light aging, increased environmental safety in the manufacture of products based on the received TEP, since the composition can be repeatedly recycled, thereby eliminating acute-standing problem of disposal of superantigenic waste, developed and proposed a new criterion, which defines the ability of the composition to multiple processing, namely: degree of irreversibility of the composition.

As follows from the table. 2 and 3, the compositions of thermoplastic elastomers allows you to get TEP with a diverse set of improved physical and mechanical properties. It is necessary to take into account the following regularities inherent in the claimed composition: the increase in the content of polypropylene increases the strength, relative elongation, index of Rapla is a, but at the same time affects the stability of the composition TEP to aging. The content of polypropylene is higher than the stated limits results in a hard, low-elastic material properties. The decrease in the content of polypropylene is below the proposed limit leads to a decrease of the criterion of irreversibility and, consequently, the ability of the composition to multiple processing. Accordingly, the increase in the content of the rubber SKEPT up to a certain limit leads to the optimization of elastoplastic properties.

However, the increase in the content of the rubber SKEPT leads to the reduction ratio of the processing, the emergence of excess, superantigenic waste, changes in the supramolecular structure of the TIC, because of the large size of vulcanized domains rubber, last will overlap the crystalline polypropylene and reduce the length of the passage macrocephaly matrix. The structure will become less mobile.

The increase in the content of plasticizer increases the mobility of the macromolecules, which leads to improvement elastoplasticity properties of the composition of the TIC, yield, processing AIDS, increases resistance to ageing by reducing the diffusion of oxygen to the macromolecules of the polymer and due to the initial oxidation of the oil.

Output plasticizing agents for the proposed aspect] the deprivation leads to reduced strength and relative elongation (going beyond the upper limit) or to the deterioration of processing AIDS and the increase in the rigidity of the composition (the output for the lower limit).

The ability of plasticizing agents to protect macromolecules from thermo-oxidative degradation is determined by the resistance of the oil to oxidation. The criterion for the oxidation of organic compounds is the parameter K2/K6, where K2, K6 - rate constants, respectively, sequels and open kinetic chain in the well-known scheme thermo-oxidative degradation of organic compounds:

RH - the original connection.

Studies on the absorption of oxygen showed that the criterionthe oxidation of paraffin oils, mainly used for plasticizing compositions on the basis of Sept and PP, are considerably higher than the same criterion oils with a predominance of aromatic compounds, for example, oil MO-S, or synthetic plasticizers of the type of dioctylphthalate, didodecyl. However, the plasticizers with a predominance of aromatic compounds is limited combined with the composition based on SKEPT and PP. Therefore, to improve the resistance to oxidation, it is advisable to combine in a certain range of paraffin oil with aromatic-containing plasticizers.

An important role in increasing ustoichivosti weathering, including the possible contacts of products based on the TEP with metals of variable valency, for example, copper, iron, play organic phosphites. They can inhibit thermal-oxidative degradation:

- to react with the radical ROo2responsible for the acceleration of the oxidation process:

and thereby interrupt the kinetic chain degenerate branching, because the radicals ROorecombine with significantly higher speed than ROo2.

If a system has antioxidant phenolic type or aromatic amine, the latter may react with the radical:where Yno- low radical inhibitor.

Thus, there is a synergy of organic phosphites with compounds having a mobile hydrogen atom of the phenolic core, for example, phenol-formaldehyde resins. In addition, organic postit actively reacts with hydroperoxides (reaction Arbuzov rearrangement):

The intermediate connection postoyalogo type capable of reacting with the metals of variable valency with the formation of covalent bonds or complexes of ionic character due to the presence of high electron density of the metal atoms, thereby to neutralize triticeae impact of these metals on the acceleration of the oxidation process, confirmed by the data of tables 3 and 2, from which it follows that the composition containing the organic postit and phenol-formaldehyde resin, more resistant to thermo-oxidative degradation.

Table 1

The compositions
1. SKEPTto 100.0 parts by weight
2. Polypropylene25,0-60,0 parts by weight
3. Polyethyleneof 1.0 to 10.0 parts by weight
4. Oil20,0 in 100.0 parts by weight
5. Sulfurof 0.1-2.0 parts by weight
6. Thiuram0.1 to 1.5 parts by weight
7. Altex or captax0.1 to 0.5 parts by weight
8. Stearic acidof 0.1-2.0 parts by weight
9. Zinc oxideof 0.5 to 8.0 parts by weight
10. Novolac alkylphenolethoxylate resinof 0.2 to 10.0 parts by weight
11. Organic postitof 0.02 to 1.0 parts by weight
12. Pigmentof 0.01 to 2.0 parts by weight
13. Fillerof 0.1 to 50.0 parts by weight
14. Antioxidantof 0.1-2.0 parts by weight
15. Peroxide Dicumylof 0.1-2.0 parts by weight
16. Bis-maleimide0.1 to 2.5 parts by weight
17. Phthalate plasticizers0.5 to 10.0 parts by weight

Table 2

Examples:
1.2.3.4.5.6.7.8.9.10.11.12.
1.100100100100100100100100100100100100
2.25604225604232.932.942425050
3.11051105101051044
4.20100602010060474720206060
5.0.12.01.0---0.750.7511 --
6.0.11.50.8---0.560.560.80.8--
7.0.10.50.3---0.190.190.30.3--
8.0.1210.750.75110.50.5
9.0.5841.851.853311
10.0.21050.2105-2.051025
11.0.0210.60.0210.6-1.00.40.40.80.8
12.0.01 2.01.00.012.01.0-0.10.10.122
13.0.150250.15025-0.1224040
14.0.1210.121112.0122
15.---0.121--1.51.5
16.---0.12.51.25--22
17.0,51050,5105-0,50,50,50,50,5

Continued Table 2
13.14.15.16.17.18.19.20.21.22.23.
1.100100100100100100100100100100100
2.6060426042424242424242
3.22112211112
4.9010020206060100901009060
5.--11-1.511111.2
6.--0.80.8-1.00.80.80.80.8 1.0
7.--0.30.3-0.40.30.30.30.30.3
8.0.50.51111.511111
9.1133-533334
10.22222255--2
11.0.80.80.40.4--11---
12.220.10.10.10.122222*
13.40402211111101
14.22112211111
15.1.51.5-1-
16.22-1.25-
17.100,50,50,50,50,50,510-10-
* chloride copper

Table 3

Technical characteristics of the compositions
p/pIndicatorsexamples
1234567 is an example of the prototype8910
1.The conditional clause is echnosti tensile MPA
1.1To aging13.711.214.313.812.715.112.215.817.814.2
1.2After heat aging at 130°C for 240 hours (1)14.912.114.915.113.916.214.316.718.615.3
1.3After svetozarevo aging at 70°With over 78 hours (2)12.610.811.812.411.814.39.114.216.713.4
2Elongation at break, %
2.1To aging405490550402450502 543560560560
2.2After ageing (1)371450494364390456442503501510
2.3After aging (2)370422434375404411364451482471
3The melt index g/10 min, 190°C, 100 N1.618.16.21.516.15.51.42.64.14.8
4Tear resistance, KN/m41715154826332515148
4.1After aging (2)31634244714424414444
5Volume resistivity, Mme·10-141.42,02.51.41.5 2.12.322.12.13
6Dielectric strength, MV/m30283028282930303030
7Ratio0,92,21,80,92,21,81,71,80,70,95

1.2
Continuation of table 3
11121314151617181920212223
1.
1.110.811.710.410.818.719.58.99.19.912.85.16.810.3
11.912.411.812.119.720.110.28.011.313.66.27.511.2
1.310.410.87.17.217.118.57.97.08.411.83.95.97.1
2.
2.1490520460480510580505520490540440490390
2.2467490410421461474449432445510390420303
2.3431442326322422425410370 392480320330254
33.12.616.716.14.85.74.54.714.615.914.015.12.8
452543839536742544055374431
4.142432526435133383142232719
51.81.81.92.02.12.32.02.11.82.11.31.30.5
6.28292828293028282729262423
7.1,11,41,71,70,50,41,52,52,5---

The calculated degree of irreversibility (L) in units of time for some samples and prototype.

Table 4
IndicatorsEXAMPLES
1.2.3.7 (prototype)8.
τind, min270420310210290
ΔS2.001.11.652.21.65
ξ0.20.380.30.250.25
L UEW27145562444

The value of "a" and "T" were made in these calculations as constants, so their values are not given in this table. They are: T=473 K, And=126 Kj/mol.

Polytopic connection, we present the following structural formula

or

where R1or H, or alkyl;

R2, R3is alkyl or aryl;

n=3÷6.

Postit P-24 - it's his trademark, produced by WUT 15-64 in pilot production Naimpally (Tambov). Is a mixture of 4-(α-methylbenzyl)phenylphosphate, 2,4 di(α-methylbenzyl)phenylphosphate and 2,4,6 three(α-methylbenzyl)phenylphosphate. Viscous light yellow liquid. Unpaintable, low-toxic stabilizer polyolefins, oils and plasticizers.

Politevic based on diphenylolpropane can be represented by the following structural formula:

Or you can use polytopic based on diphenylolpropane and pentaerythritol. These compounds are synthesized in the Kazan chemical-technological Institute. More details can be studied in thesis of one of the authors - Gemtleman in 1981, Effective, not a colored polyolefin stabilizers, plasticizers, oils.

1. A thermoplastic elastomer composition comprising a polypropylene, low density polyethylene, ethylenepropylene rubber-Sept, oil, Novolac alkylphenolethoxylates resin, organic postit, pigment, filler, antioxidant, talaty plasticizer and a vulcanized by the method of dynamic vulcanization using sulfur in it, turama, altaxe, stearic acid, zinc oxide or dynamic peroxide vulcanizer and using the peroxide Dicumyl and bis-maleimide and perhaps, stearic acid and zinc oxide in the following ratio of components, parts by weight:

SKEPT100,0
Polypropylene25,0-60,0
Polyethylene1,0-10,0
Oil20,0-100,0

sulfur vulcanization accelerator:

Sulfur0,1-2,0
Thiuram0.1 to 1.5
Alltex0,1-0,5
Stearic acid0,1-2,0
Zinc oxide0,5-8,0

or peroxide vulcanization:

Peroxide Dicumyl0,1-2,0
Bis-maleimide0.1 to 2.5
Novolac alkylphenolethoxylate resin0,2-10,0
Organic postit0,02-1,0
Pigment0,01-2,0
Fillerof 0.1 to 50.0
Antioxidant0,1-2,0
Phthalate plasticizers0.5 to 10.0

the content in parts by weight of oil (Cm), low-density polyethylene (XLPE), Palatnik p is ustification (TFP), Novolac alkylphenolethoxylates resin (SPS) and polypropylene (Spp) to 100.0 parts by weight of Skepta connected by the relation: (Cm+EIT+TFP+SPS):Spp and is in the range of 0.4 to 2.5.

2. Thermoplastic elastomer composition according to claim 1, characterized in that the quality of the oil used or paraffin oil, or spun oil or industrial oil, or oil MO-S.

3. Thermoplastic elastomer composition according to claim 1, characterized in that as Novolac alkylphenolethoxylates resin is used alkylphenolethoxylate resin with a molecular weight of 500-1000, containing not less than 7.0% of the methylol groups.

4. Thermoplastic elastomer composition according to claim 1, characterized in that the organic phosphite used or tennispalatsi, or postit P-24, or polytopic.

5. Thermoplastic elastomer composition according to claim 1, characterized in that as Palatnik plasticizers used dioctylphthalate or didodecyl.

6. The method of obtaining thermoplastic elastomer composition according to claim 1 by means of the complete dynamic vulcanization of a mixture containing polypropylene, low density polyethylene and ethylenepropylene rubber, including the loading of the aforementioned components in the mixer, mixing them, enter the powder mixture vulcanizing agents, mixing formed with the art, further discharge of the obtained composition, the cooling and granulation, characterized in that a mixture of ethylene-propylene-diene rubber exercise with flatname plasticizers, part of a set dose Novolac alkylphenolethoxylates resin, antioxidant and butter, stirring once introduced components in the resulting mixture is additionally injected polypropylene, low density polyethylene, filler and pigment, mix the components, after which the resulting mixture is injected vulcanizing component group, including vulcanizing agents and vulcanization accelerators, the remaining portion of a given dose Novolac alkylphenolethoxylates resin and organic postit, stirred the mixture, and the degree (L) irreversibility from the equilibrium, a fully structured state song not suitable for recycling, is determined from the relation:

L=A·τind·ξ/T·ΔS,

where a is the affinity, chemical potential equilibrium process structuring;

τindthe induction period when thermal-oxidative and mechanochemical degradation of the polypropylene matrix;

ΔS is the entropy change during the formation of equilibrium, stitched patterns, in the process of technological cycle, is determined by segmental the Noah mobility of macromolecules;

ξ - the relative content of the matrix, i.e. polypropylene, this composition is in the range of 0-1;

T - treatment temperature in degrees Kelvin.

7. The method according to claim 6, characterized in that the part of the given dose Novolac alkylphenolethoxylates resin is 0.1 to 0.50 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

8. The method according to claim 6, characterized in that the antioxidant is administered in an amount of 0.1 to 2.0 parts by weight on to 100.0 parts by weight of ethylene-propylene-diene rubber.

9. The method according to claim 8, characterized in that the antioxidant is used spatial-employed phenols, or bisphenol, or thiobisphenol, or aromatic amines;

10. The method according to claim 6, characterized in that the mixing entered the first part of the set dose Novolac alkylphenolethoxylates resin, antioxidant, oil, Palatnik plasticizers and ethylene-propylene-diene rubber is carried out for 2-3 min at a temperature of 150-180°C.

11. The method according to claim 6, characterized in that the quality of the oil used or paraffin oil, or oil MO-S, or spun oil or industrial oil.

12. The method according to claim 6, characterized in that the dose of injected oil is 20,0 in 100.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

13. The method according to claim 6, characterized in that as Palatnik plastificator the use dioctylphthalate or didodecyl in the amount of 0.5 to 10.0 parts by weight of by 100.0 parts by weight of ethylene-propylene-diene rubber.

14. The method according to claim 6, characterized in that the dose of injected polypropylene was 25.0-60.0 sec by 100.0 parts by weight of parts by weight of ethylene-propylene-diene rubber.

15. The method according to claim 6, characterized in that the dose of injected polyethylene low density is 1.0 to 10.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

16. The method according to claim 6, characterized in that after the introduction of polypropylene, low density polyethylene, filler and pigment, the resulting mixture is stirred for 3-4 minutes at a temperature of 190-210°C.

17. The method according to claim 6, wherein the stearic acid is administered in an amount of 0.1 to 2.0 parts by weight on to 100.0 parts by weight of ethylene-propylene-diene rubber.

18. The method according to claim 6, characterized in that as vulcanizing agents are used or sulfur vulcanization accelerators, stearic acid and zinc oxide or peroxide Dicumyl and bis-maleimide.

19. The method according to p, characterized in that the dose used sulfur is 0.1 to 2.0 parts by weight on to 100.0 parts by weight of ethylene-propylene-diene rubber.

20. The method according to p, characterized in that the dose used zinc oxide is 0.5 to 8.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

21. The method according to p, characterized in that the dose used peroxide of Dicumyl is 0.1 to 2.0 parts by weight on to 100.0 parts by weight of ethylene-propylene-diene rubber.

22. The method according to p, characterized in that the dose used bis-maleimide is 0.1 to 2.5 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

23. The method according to claim 6, characterized in that the accelerators of the vulcanization process used or thiuram, or altax, or captax.

24. The method according to item 23, wherein the dose used turama is 0.1 to 1.5 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

25. The method according to item 23, wherein the dose used altaxe or captax is 0.1 to 0.5 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

26. The method according to claim 6, characterized in that the remaining part of the given dose Novolac alkylphenolethoxylates resin is 0.1 to 5.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

27. The method according to claim 6, wherein mixing the mixture formed after the introduction of the vulcanizing component groups and the remaining portion of a given dose Novolac alkylphenolethoxylates resin is carried out for 5-6 minutes at a temperature of 190-210°C.

28. The method according to claim 6, characterized in that the organic phosphite use or tennispalatsi, or postit P-24, or polytopic in the amount of 0.02 to 1.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

29. The method according to claim 6 characterized in that the filler used is whether carbon black, or chalk or kaolin in an amount of 0.1 to 50.0 parts by weight by 100.0 parts by weight of ethylene-propylene-diene rubber.

30. The method according to claim 6, characterized in that the quality of the pigments used or titanium dioxide or iron oxide pigments, or phthalocyanine pigments in an amount of 0.01 to 5.0 parts by weight of at 100,0 parts of ethylene-propylene-diene rubber.



 

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7 cl, 1 dwg, 6 tbl, 9 ex

FIELD: composite materials on base of thermoplasts; injection molding of various parts, parts for railway engineering in particular: insulating bushes and locks of contact system, elastic insulating gaskets on wooden and concrete sleepers and busbars for switches.

SUBSTANCE: proposed polymer composition contains polyolefin, crumb rubber, synthetic ethylene propylene rubber and filler for micro-spheres from smoke emissions of thermal power plants; it also contains lubricant as additive. Mineral or vegetable oil at boiling temperature not below 180°C or low-molecular diane resins may be used as lubricant. Besides that, filler may contain talc. Use of smoke emissions of thermal power plant of preset composition and combination of components at definite ratio makes it possible to obtain molding compositions possessing high wear resistance, water resistance and oil resistance, low abradability at retained elasticity; increased service life.

EFFECT: enhanced efficiency.

4 cl, 2 tbl, 7 ex

FIELD: polymers.

SUBSTANCE: ethylenepropylene copolymer-base composition comprises dicumyl peroxide, bis-(tert.-butylperoxyisopropyl)benzene or 1,1-di-tert.-butylperoxy-3,3,5-trimethylcyclohexane as an organic peroxide and vinyltri-(methoxyethoxy)silane or polyphenylethoxysiloxane as an organosilicon additive. Except for, the composition comprises additionally a vulcanization co-agent taken among the group including low-molecular polybutadiene with the content of 1,2-links 20-80%, trimethylolpropane-trimethacrylate, triallyl cyanurate and quinone dioxime-1,4. Also, the composition comprises stearin, paraffin and zinc oxide. The composition shows high physical-mechanical properties, oil-resistance and dielectric properties. Invention can be used, in particular, in cable industry.

EFFECT: valuable properties of composition.

2 cl, 3 tbl, 8 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to polyethylene molding mass with multimodule molecular weight distribution intended to manufacture hollow articles such as gas tanks, canisters, barrels, and bottles using extrusion. Molding mass has density at least 0.940 g/cm3, contains low-molecular polyethylene with viscosity index 40-150 cm3/g in amount 30 to 60%, high-molecular copolymer of ethylene with another C4-C10-olefin with viscosity index 150-800 cm3/g in amount 30 to 65%, and ultrahigh-molecular polyethylene with viscosity index in the region 900-3000 cm3/g in amount 1 to 30%. Molding mass is prepared by cascade-based suspension polymerization.

EFFECT: increased degree of blowing and improved balance between hardness and fissuring resistance.

3 cl, 2 tbl, 5 ex

FIELD: road, industrial and civil building, in particular sealing and hydraulic insulating material.

SUBSTANCE: invention relates to industrial method for production of modified bitumen mastic. Claimed bitumen-polymer material contains (mass %) oil bitumen 60-70; synthetic resin 2-10; oil solvent and/or black oil 18-30; sulfur-containing compounds 0.5-5.0; and additionally oxyethylated alkylphenol as surfactant 0.1-5.0. Sulfated mixture of oil bitumen, synthetic resin, oil solvent and/or black oil treated for sulfitation at 140-2300C is used as sulfur-containing compounds. Method for production of said material also is disclosed.

EFFECT: polymer-modified bitumen mastic and sealing of improved quality; method for production of increased capability; inexpensive raw materials; energy-conversation technology.

6 cl, 3 ex, 4 tbl, 1 dwg

The rubber mixture // 2241010
The invention relates to rubber industry and can be used in aggressive environments, in particular in the communication system for the manufacture of bushings for the suspension of the self-supporting fiber optic cables

The invention relates to caps for bottles, made of olefin polymer resins, in particular to screw caps for bottles

The invention relates to thermoplastic vulcanizates modified with the use of statistical propylene copolymers, and the way they are received, it can be used for the manufacture of various products, such as tires, hoses, belts, gaskets, casting and molded products

The invention relates to an elastomeric composition based on a thermoplastic polyolefin, in particular to a composition containing a propylene polymer with a wide molecular weight distribution, used in the automotive industry for the manufacture of bumpers and side strips

The invention relates to the field of compositions based on petroleum bitumen, rubber, used in construction, waterproofing, repair of concrete and asphalt pavements, Gulf of cracks in them, sealing, corrosion protection, construction of the roof

FIELD: polymers.

SUBSTANCE: invention relates to propylene polymer-base compositions eliciting improved shock-resistance and excellent optical properties that can be used for making bottles and containers. The composition comprises from 70 to 90 wt.-% of statistic copolymer of propylene with ethylene including from 1 to 6 wt.-% of ethylene and having the content of xylene-insoluble fraction 93 wt.-%, not less, and from 10 to 30 wt.-% of copolymer of propylene with ethylene containing from 8 to 18 wt.-% of ethylene. The ratio (B)/C2B containing percent by mass (B) as measured for the total mass content of (A) and (B) to the mass percent content of ethylene (C2B) as measured for the total mass content (B) is 2.5 or less. Prepared compositions elicit optimal balance of such indices as transmittance, rigidity and shock-resistance being even at low temperatures.

EFFECT: improved and valuable properties of compositions.

7 cl, 1 tbl

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