Poly(vinylidene fluoride)-based composition

FIELD: polymer materials.

SUBSTANCE: invention provides elastic and resilient composition containing (A) at least one homopolymer of vinylidene fluoride or copolymer of vinylidene fluoride with at least one other monomer capable of being copolymerized with vinylidene fluoride wherein proportion of this other monomer ranges between 0 and 30 wt parts per 100 wt parts vinylidene fluoride, (B) at least one fluorinated elastomer, which is copolymer of vinylidene fluoride and at least one other fluorinated monomer, and optionally (C) plasticizer. Composition is characterized by that, on the one side, it contains 0.5 to 10 wt parts B and 0 to 10 wt parts C per 100 wt parts A, provided that B+C = 0.5 tp 10.5 wt parts, and, on the other side, such vinylidene fluoride homopolymer or copolymer is chosen in such a way that it has coefficient of fluidity below 5 g/10 min, as measured according to standard ISO 1133 at 230°C under load 5 kg, and critical modulus G ranging between to 5and 22 kPa, as measured in intersection of shear moduli G' and G" in molten state at 190°C.

EFFECT: essentially increased stability of composition in air and in crude oil.

7 cl, 6 tbl, 12 ex

 

The technical field

The present invention relates to the field of polymers and its object is a composition based on poly (vinylidene fluoride).

Fluorinated homopolymers and copolymers are known for their high temperature resistance, chemical resistance, in particular, with respect to solvents, weather resistance and resistance to radiation (ultraviolet and so on), its impermeability to gases and liquids, for its electrical insulating properties. They, in particular, used in the manufacture of pipes for the transportation of hydrocarbons from marine (offshore) or continental (on-shore) oil. Sometimes the hydrocarbons transported in conditions of high temperature (about 135°C) and high pressure (e.g., 70 MPa). In connection with the operation of such facilities face acute problems of mechanical, thermal and chemical stability of the materials. There are also other problems before or after the operation: for example, during production, installation and/or dismantling (unwinding-winding tubes, the latter can be subjected to shock and bending loads, they must also withstand sometimes in conditions of very low temperatures (for example, -35°).

The prior art and the technical problem

In order to meet short-term and long-term requirements mentioned above, biopedogenic different types of materials, which usually includes one or more metal elements, providing mechanical strength, for example, spiral steel tape, as well as various layers based on polymer compositions, providing, in particular, the tightness and thermal insulation. These compositions, often based on fluorinated polymers and, in particular, of semi-crystalline poly (vinylidene fluoride) (PVDF), usually plastificator to compensate for the lack of elasticity, weak deformation on the threshold of fluidity and lack of elasticity, which leads to undesirable more or less rapid extraction of plasticizers transported hydrocarbons, resulting in properties, given by plasticization (elasticity, elasticity and so on), are gradually lost, which is accompanied, usually, by the phenomena of shrinkage and, consequently, limits the lifetime of the products of these compositions.

To address some of the above disadvantages of fluorinated polymers may plasticized, replaced polymer compositions containing a homopolymer PVDF, thermoplastic copolymer (instead of the elastomer) fluoride vinylidene (VF2) and at least one other fluorinated monomer (EP 608.939 and EP 608.940) and the plasticizer (EP 608.939). However, the implementation of strict and precise control of the morphology of such mixtures Tr which require the use of complex and expensive equipment, what makes this solution difficult to implement; on the other hand, it was noted that these compounds have limited elasticity at low temperature and low resistance to swelling, for example, by contact with hydrocarbons, and their chemical resistance lower than that individual PVDF, and they lose possible plasticizer in contact with certain chemicals. In addition, the PVDF homopolymer is only from 60 to 80 wt.% compositions according to the patent EP 608039 and from 25 to 75% according to the patent EP 608940.

In PVDF were also introduced particles of elastomer (FR 2 592 655 and FR 2 618 791) for absorption of liquid hydrocarbons and their fixation in the weight of the mixture, the amount of elastomer in the mixture should not exceed 25% of the total mass. Such mixtures have elasticity, improved compared with individual PVDF but their resilience is considered inadequate for some applications and, in particular, for transport and/or storage of gaseous hydrocarbons, as this type of mixture has a low elasticity in cases where direct contact with the liquid hydrocarbon is missing. In FR 2592655 described mixture containing in addition at least 10 wt.% plasticizer, which, having desired elasticity and impact resistance, sooner or later lose plasticizer.

In the patent application EP 0714944 described to the position, containing a matrix of PVDF containing buried in it particles of vulcanized elastomers, possible elasticity is given by the plasticizers. These compositions have a very high multiaxial impact, but the number of elastomers comprising 26,6 or 50 weight parts per 100 weight parts of PVDF 1000 (examples 6 and 11), is so great that these compositions have insufficient thermal and chemical stability at 150°C. in Addition, the disadvantage of these compositions is the high permeability under pressure and low stability during rapid decompression of hot gases under pressure (″blistering″).

In patent WO 9856855 offer a solution to the above-mentioned technical problems, and its object is elastic and elastic composition, consisting of:

at least one homopolymer (A) fluoride vinylidene (VF2) or one copolymer (A) VF2 and at least one other monomer, copolymerizing with VF2, in which the number of the specified monomer is from 0 to 30 weight parts per 100 parts by weight of VF2,

at least one elastomer In,

at least one plasticizer,

characterized in that, on the one hand, the composition contains from 0.5 to 10 weight parts To and from 0.5 to 10 weight parts per 100 weight parts And, with the additional condition, Thu is the sum of b and C is from 1 to 10.5 parts by weight of, and the fact that, on the other hand, choose such a homopolymer or copolymer of fluoride vinylidene And that it has a flow index, measured in accordance with ISO 1133 at 230°under a load of 5 kg, which is below 5 g/10 min, and critical module GCon the suppression of the shear moduli G’ and G’ in the molten state, measured at 190°S, which ranges from 5 to 22 kPa, and this composition has the following properties: elongation at the threshold of fluidity εy more than 11%, the elongation at break εr is more than 200%, the impact strength at 23°above 50 kJ/m2and impact strength at -30° - more than 10 kJ/m2measured in accordance with ISO 180-1982, tensile strength in bending sheet metal coated is above 50%, weight loss Δp in air at 150°within 1 month - less than or equal to 8% and the change in mass Δp-in-oil (a mixture of equal volumes of cyclohexane, isooctane and xylene) at 150°within 1 month is not negative (loss of mass of a specified composition in oil missing).

Critical module GCdetermined at 190°using a dynamic mechanical spectrometer, such as Rheometrics RMS 800, using viscometer plane - plane diameter 25 mm

In patent WO 9856855 used elastomer In or based on polyacrylic is tructure core shell (kernel without shell), or based on a polysiloxane structure, or NBR (mutagenically rubber), and in addition you also need to use a plasticizer. Recently it was discovered that if the elastomer is a fluorine elastomer, the presence of the plasticizer is not required to obtain the required mechanical properties, and also stability in air and in oil are much increased.

Brief description of the invention

The present invention relates to elastic and elastic composition, consisting of:

at least one homopolymer (A) fluoride vinylidene (VF2) or one copolymer (A) VF2 and at least one other monomer, copolymerizing with VF2, in which the number of the specified monomer is from 0 to 30 weight parts per 100 parts by weight of VF2,

- at least one fluorinated elastomer,

perhaps plasticizer,

in which, on the one hand, the composition contains from 0.5 to 10 weight parts In and from 0 to 10 weight parts per 100 weight parts And, with the additional condition that the sum of b and C is from 0.5 to 10.5 weight parts, and, on the other hand, choose such a homopolymer or copolymer of fluoride vinylidene (A)that he has a flow index, measured in accordance with ISO 1133 at 230°under a load of 5 kg, which is below 5 g/10 mi the, and critical module GCon the suppression of the shear moduli G’ and G’ in the molten state, measured at 190°S, which ranges from 5 to 22 kPa.

This composition has the following properties:

elongation at the threshold of fluidity εmore than 9%, the elongation at break εr is more than 200%, the impact strength at 23° - above 46 kJ/m2and impact strength at -30° - more than 10 kJ/m2measured in accordance with ISO 180-1982, tensile strength in bending sheet metal with the surface is more than 50%, weight loss Δp in air at 150°within 1 month - less than or equal to 8% and the change in mass Δp-in-oil (a mixture of equal volumes of cyclohexane, isooctane and xylene) at 150°within 1 month is not negative (loss of mass of a specified composition in oil missing).

After exposure to air at 150°within 1 month elongation εr decreased by at least 10%, while for compositions in which the elastomer is not In fluorinated elastomer, the reduction ranged from 12 to 25%.

After exposure to air at 150°within 12 months of the elongation εr decreased from 0 to 20%, while for compositions in which the elastomer is not In fluorinated elastomer, the reduction was about 50%.

After holding the oil at 150° With in 1 month elongation εr or increased or remained constant, while for compositions in which the elastomer is not In fluorinated elastomer, the reduction ranged from 15 to 25%.

Critical module GCdetermined at 190°using a dynamic mechanical spectrometer, such as Rheometrics RMS 800, using viscometer plane-plane diameter 25 mm

Preferably the relative amount specified other monomer in the polymer a is from 0 to 5 weight parts.

Preferably as indicated another monomer used fluorinated monomer.

Mainly the relative amount In the range from 0.5 to 5 weight parts per 100 weight parts of A.

Mainly the relative amount is from 0.5 to 5 weight parts per 100 weight parts of A.

Fluorinated polymers And compositions according to the invention is chosen from homopolymers or copolymers of VF2 because of their high chemical stability in the presence of crude oil or gas field and their stability at high temperatures.

Preferably the compositions according to the invention contain 100 weight parts of homopolymer fluoride vinylidene, and 2.1 parts by weight of In and 3.2 parts by weight of C, and a homopolymer chosen so that MFI, change aemy at a temperature of 230° With, was 0.7, and the critical module GCmeasured at 190°amounted to 20 kPa.

Detailed description of the invention

Fluorinated elastomers used in the present invention can be selected from these elastomers or resins serving as the main component of these elastomers.

These elastomers are defined in ASTM Special Technical Bulletin, n 184, as materials that can be stretched at room temperature two times and after stretching for five minutes immediately return to its original length with a possible 10% error.

Polymer resin serving as a main component to obtain these elastomers are mainly substances, amorphous or low crystallinity (crystalline phase is less than 20% of the volume), and the glass transition temperature (Tg) below room temperature. In most cases, these substances meet the copolymer or ternary copolymers, Tg below 0°and which may have reactive properties (and maybe in the presence of additives), allowing to obtain a true elastomer.

Fluorinated elastomers are copolymers of VF2 and at least one other fluorinated monomer. As an example of co monomer can is about to call viniferin; triptorelin; chlorotrifluoroethylene (CTFE); 1,2-defloration; tetrafluoroethylene (TFE); HEXAFLUOROPROPYLENE (HFP); simple PERFLUORO (alkylvinyl) esters, such as simple PERFLUORO(metilidinovy) ether (PMVE); simple PERFLUORO(ethylenically) ether (PEVE) and simple PERFLUORO(propylvinyl)ether (PPVE), PERFLUORO(1,3-dioxole); PERFLUORO(2,2-dimethyl-1,3-dioxole) (PDD); the product of formula CF2=CFOCF2CF(CF3)OCF2CF2X, in which X denotes SO2F, CO2H, CH2OH, CH2OCN or CH20PO3H; the product of formula CF2=CFOCF2CF2SO2F; the product of formula F(CF2)nCH20CF=CF2, in which n denotes 1, 2, 3, 4, or 5; the product of formula R1CH2CF=CF2 in which R1 denotes hydrogen or F(CF2)z and z is 1, 2, 3 or 4; the product of formula R3OCF=CH2 in which R3 denotes F(CF2)z and z is 1, 2, 3 or 4; performativity (PFBE); 3,3,3-cryptochrome and 2-trifluoromethyl-3,3,3-Cryptor-1-propene. You can use several comonomers.

As an example, the elastomer can be called In the copolymers of VF2/HFP, in which the weight amount of VF2 be from 50 to 75% with correspondingly from 50 to 25% HFP. You can also call the copolymers of VF2/HFP/TFE containing from 45 to 65% VF2, the proportion of HFP and TFE thus such that the weight ratio HFP/TFE is from 1/5 to 5/1, and preferably from 1/2 to 2/1.

These elastomers can be obtained by the method described in ″Composition and sequence distribution of vinylidene fluoride copolymer and terpolymer fluoroelastomers. Determination by 19F nuclear magnetic resonance spestroscopy and correlation with some properties.″

Maurizio Pianca, Piergiorgio Bonardelli, MarcoTato, Gianna Cirillo and Giovanni Moggi. POLYMER, 1987, Vol. 28, February, 224-230.

Plastificator may be selected from conventional plasticizers and, in particular, is described in US 3 541 039 and US 4 584 215. Preferably the plasticizer is selected from dibutylsebacate and N-n-butylsulfonyl.

In addition to the above components a, b and C, the compositions according to the invention can contain various additives and/or fillers and/or dyes and/or pigments, organic or mineral, or macromolecular necromancery, well known from the literature.

As non-restrictive examples of fillers include mica, alumina, talc, carbon black, glass fiber, carbon fiber, macromolecular compounds.

As a non-restrictive example, additives can be called agents, anti-UV, flame-retardant substances, stabilizers, transforming agents or ″processing aids″.

These additives and fillers in amounts usually less than 20% of the total weight of a+b+C.

Mainly the composition according to the invention is prepared by mixing components a, b and C in the molten state.

The composition according to the invention can be obtained by mixing in rasalingam state homopolymer or copolymer of vinylidene And with one or more elastomers, pervonachalno having the form of powders, granules, in which extruder, cylindrical mixer or any other suitable device for mixing.

You can also mix the latex homopolymer or copolymer of vinylidene with one or more elastomers in the form of a powder or latex.

One or more plasticizers, and possible additives can be incorporated into the composition during mixing And and or can be mixed with one or other of these components prior to the beginning stage of mixing a and b, or after mixing a and b in accordance with the methods of mixing, above.

Compositions according to the invention can be used for production of materials subjected to loads in conditions of high and/or low temperature by contact with aggressive substances (such as hydrocarbons, strong acids, solvents, mineral or organic base), and therefore their properties such as elasticity, are especially needed.

As indicated above, the compositions according to the invention are particularly suitable for the manufacture of hermetic membranes flexible metal piping used in the extraction and/or transportation of gases and hydrocarbons in the oil and gas industry.

Such hermetic shell is usually presented in the form of single layer or multilayer pipes made by extrusionly co-extrusion, which then inserts the flexible metal pipe, or manufactured directly on the flexible tube using a known coating technologies.

The composition according to the invention can be used for the manufacture of multilayer shells, such as are described, for example, in patent US 5601893.

Compositions according to the invention can also be used for extrusion products used in the chemical industry, in particular hoses, pipes, and also for the production of products used in construction and public works, such as cable sheathing, guys, as well as film and single-layer or multi-layer sheet materials for various industries.

The composition according to the invention can also be used for the manufacture of wire sheath, lived, wires and cables, such as described in patent applications EP 671502 and EP 671746.

Examples

Using a single-screw extruder with a diameter of 40 mm (L/D=33; compression ratio=3,5)installed on 220°was extrudible composition (AI Bj Ck x)containing at least one fluorinated polymers A4, A5 or A7, one of the elastomers B1, B2, B5-B7 and plastificator C1. Depending on the relative amounts of different components of the composition outlined α, χ, φ, η and γ.

Table 1 shows the index of fluidity at high the th temperature fluorinated polymers Ai, which are homopolymers or copolymers of VF2 and their critical module Gwith; flow index MFI was measured in accordance with ISO 1133 at 230°under a load of 5 kg, and critical module Gwithwere determined using a dynamic mechanical spectrometer, such as Rheometrics RMS 800, using viscometer plane-plane diameter 25 mm

Table 2 shows the chemical nature of the brand names and suppliers of elastomers Bj.

Table 3 shows the chemical nature and the family, which includes plasticizers Ck; table 4 shows the weight quantity of components of the compounds in question, and the reference to the relevant composition.

Table 1
The nature of the polymerThe VF2 homopolymerThe VF2 homopolymerCopolymer of VF2 with 1 wt.% C2F3Cl
No. fluorinated polymerA4A5A7
MFI (g/10min)0,70,140,8
Gwith(kPa)201121

Homo - and copolymers of VF2 obtained by known methods of radical polymerization in emulsion or in suspension, is described in C the houses on the patents EP 709429, FR 2286153, FR 2610325. They can also be obtained in solution or in bulk.

More specifically, the elastomer B1 is an elastomer-type core shell (core surface layer) with acrylic surface layer, it is obtained by radical polymerization of acrylic monomers in the aqueous phase according to the US patents 3264373 or US 3562235.

Elastomer B2 is a core shell, obtained by radical polymerization in the aqueous phase. It is a polymer type MBS, i.e. its core is a copolymer of butadiene and styrene, and surface - emission spectra obtained for pure.

B5-B7 is obtained by a method described in the article mentioned in the description.

The above composition is tested by measuring the tensile strength, impact strength IZOD, elasticity in bending sheet metal coated, as well as thermal and chemical resistance.

Elongation at elongation measured on the plates with a thickness of 0.7 mm, made of extruded compositions described above, and molded at 205°using tiled press. Samples of test for tensile type STM D 1708 cut with the cutter of several plates. Elongation at tensile deformation at a threshold of fluidity εand deformation at break εr) is measured in accordance with standard STM D 638 when it is matney temperature.

Impact strength IZOD notched (measured at 23°and at -30° (C) experience in the samples injected at 230°size 80×10×4 mm, and the cut and test fit the ISO 180-1982.

Elasticity in bending sheet metal coated determined at room temperature using a metal flexible structure (rolled sheet, the outer diameter of which is equal to 29 mm)coated with the compositions in question, extruded using a head shaped channel; the coating has an average thickness of 4 mm, the temperature of the extrusion during the coating ranges from 200 to 250°C. the Pipe, which was coated with the above method, are placed on two fixed caliper, the distance between which is 250 mm With a bending roller diameter, 80 mm click on at equal distance from each other point of support tubes, providing a pressure sufficient to cause bending of the pipe to rupture. Measure the height of the recesses of the roller, indicating the ability of the flexible tube to deform. The ratio of the height of the recess, measured at break, to the maximum height of the grooves, fixed at 160 mm, corresponds to the elasticity in bending sheet metal coated.

Thermal and chemical stability is ü evaluated by measuring the weight change Δ R extruded sample having a thickness of 3 mm and a weight of 5 grams, made from this composition, relative to the weight of an identical sample, placed in 1 month in a certain environment (air or oil (1/3 of the volume of cyclohexane, 1/3 of isooctane, 1/3 xylene) at 150°S, elongation at break (εand εr) is also measured. Sign (negative) means weight loss.

To assess the chemical stability of the measured weight change ΔR extruded sample having a thickness of 3 mm and a weight of 5 grams, made from this composition, relative to the weight of an identical sample placed for 7 days at 50°With in Hcl solution c concentration of 37 wt.%, followed by washing with distilled water and drying for 24 hours at a temperature of 150°C. Sign (negative) mean weight loss (table 5).

Thermal and chemical stability is also evaluated by measuring the elongation at break and impact strength Charpy at 23°after aging for 12 months in air at 150°With (table 6). All results are combined in tables 5 and 6.

Table 5
TrackElongation at tensileImpact strengthFlexural strength sheet Stability in air, 1 months, 150°Stability in oil, 1 month, 150°Resistance in HCl
Nature%ε (%) εr (%)-30°S (K/j)23°S (K/j)23°C (%)Δp (%)ε (%) εr (%)Δp (%)ε (%) εr (%)Δp (%)
1A5 B1 C1φ14,83802298100-4,8162803,3>25300-6
2A4 B1 C1α13350156880-2,615,32601,322255-4
3A5 B1 C1α11,7400247085a-2.513,13501,320340-4
4A5 B2 C1α12,4 197075-2,3133302,920320-4
5A7 B1 C1α153502510080-4,7162703,5>25300-7
6A4 B5 C1α12,9275156280a-2.511,42501,220300-3
7A4 B5 C1χa 12.725016728512,4230
8A4 B6 C1αa 12.7260146080-2,311,82501,118280-3
9A4 B7 C1α12,5300186590 a-2.5122801,522300a-2.5
10A4 B5γ9,4220124885
11A5 B1 C2α11,5380226580
12A4 B5η9,42701357

Table 6
TrackElongation εr (%)Choc Chapy 23°C
Nature%to agingafter aging in the tech. 12 months.

at 150°
to aging after aging in the tech. 12 months at 150°
2A4 B1 C1α3501806815
11A5 B1 C2α3801606515
3A5 B1 C1α4001807012
6A4 B5 C1α2752806265
10A4 B5γ2201804878
12A4 B5η2702105685
8A4 B6 C1α2602606065
9A4 B7 C1α3002906570
7A4 B5 C1χ2502507281

1. Elastic and elastic composition containing:

at least one homopolymer (A) fluoride vinylidene (VF2) or copolymer (A) VF2 and IU is greater least one other monomer, copolymerizing with VF2, in which the number of the specified monomer is from 0 to 30 parts per 100 parts VF2,

- at least one fluorinated elastomer, which is a copolymer of VF2 and at least one other fluorinated monomer,

perhaps plasticizer,

in which, on the one hand, the composition contains from 0.5 to 10 parts In and from 0 to 10 parts To 100 parts And, with the additional condition that the sum of b and C is from 0.5 to 10.5 parts, and, on the other hand, choose such a homopolymer or copolymer of fluorinated vinylidene And that it has a flow index, measured in accordance with ISO 1133 at 230°under a load of 5 kg, which is below 5 g/10 min, and critical module Gwithat the intersection of the shear moduli G’ and G’ in the molten state, measured at 190°S, which ranges from 5 to 22 kPa.

2. The composition according to claim 1, in which the specified monomer a is present in an amount of from 0 to 5 parts

3. The composition according to claim 1 or 2, in which the specified monomer a is a fluorinated monomer.

4. Composition according to any one of claims 1 to 3, in which the relative amount In the range from 0.5 to 5 parts

5. Composition according to any one of claims 1 to 4, in which the relative amount is from 0.5 to 5 parts

6. Composition according to any one of the previous points is, in which the elastomer To choose from vinylidene fluoride vinylidene/HEXAFLUOROPROPYLENE (VF2/HFP), the weight amount of VF2 in amount from 50 to 75% with correspondingly from 50 to 25% HFP.

7. Composition according to any one of claims 1 to 5, in which the elastomer To choose from vinylidene fluoride vinylidene/HEXAFLUOROPROPYLENE/tetrafluoroethylene (VF2/HFP/TFE)containing 45 to 65% VF2, and the number of HFP and TFE are such that the weight ratio HFP/TFE is from 1/5 to 5/1, and preferably from 1/2 to 2/1.



 

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The rubber mixture // 2097393
Polymer composition // 2249019

FIELD: polymer materials.

SUBSTANCE: invention relates to creation plasticized compositions based on suspension polyvinylchloride, which are used in manufacturing film materials, in particular polyvinylchloride insulation tape. Composition contains suspension polyvinylchloride, dioctyl phthalate plasticizer, lead(III) sulfate, calcium stearate lubricant, carbon black, mixture of chlorinated C10-C30-hydrocarbons with 40-50% Cl content as secondary plasticizer, and residue of vacuum distillation of cobalt-freed still residue obtained in rectification of propylene hydroformylation product with boiling range 300-310°C.

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1 tbl

Polymer composition // 2249019

FIELD: polymer materials.

SUBSTANCE: invention relates to creation plasticized compositions based on suspension polyvinylchloride, which are used in manufacturing film materials, in particular polyvinylchloride insulation tape. Composition contains suspension polyvinylchloride, dioctyl phthalate plasticizer, lead(III) sulfate, calcium stearate lubricant, carbon black, mixture of chlorinated C10-C30-hydrocarbons with 40-50% Cl content as secondary plasticizer, and residue of vacuum distillation of cobalt-freed still residue obtained in rectification of propylene hydroformylation product with boiling range 300-310°C.

EFFECT: improved quality of insulation tape, reduced production expenses, and enabled partial utilization of waste.

1 tbl

Polymer composition // 2249019

FIELD: polymer materials.

SUBSTANCE: invention relates to creation plasticized compositions based on suspension polyvinylchloride, which are used in manufacturing film materials, in particular polyvinylchloride insulation tape. Composition contains suspension polyvinylchloride, dioctyl phthalate plasticizer, lead(III) sulfate, calcium stearate lubricant, carbon black, mixture of chlorinated C10-C30-hydrocarbons with 40-50% Cl content as secondary plasticizer, and residue of vacuum distillation of cobalt-freed still residue obtained in rectification of propylene hydroformylation product with boiling range 300-310°C.

EFFECT: improved quality of insulation tape, reduced production expenses, and enabled partial utilization of waste.

1 tbl

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

FIELD: rubber industry.

SUBSTANCE: curing agent contains, wt %: sulfur 45.0-90.0, 1,4-bis(trichloromethyl)benzene 5.0-40.0, hexamethylenetetramine 1.0-5.0, and wax 2.0-10.0. Agent is prepared by mixing sulfur melt with molten 1,4-bis(trichloromethyl)benzene at 115-120°C followed by adding hexamethylenetetramine and wax, raising temperature to 140-150°C, and stirring resulting melt at this temperature during 30-40 min, whereupon melt is cooled in thin layer to 15-20°C.

EFFECT: improved distribution of curing agent in rubber compound, increased resistance to reversion during prolonged vulcanization of rubber and to thermal-oxidative action.

3 cl, 5 tbl, 7 ex

FIELD: rubber industry.

SUBSTANCE: curing agent contains, wt %: sulfur 45.0-90.0, 1,4-bis(trichloromethyl)benzene 5.0-40.0, hexamethylenetetramine 1.0-5.0, and wax 2.0-10.0. Agent is prepared by mixing sulfur melt with molten 1,4-bis(trichloromethyl)benzene at 115-120°C followed by adding hexamethylenetetramine and wax, raising temperature to 140-150°C, and stirring resulting melt at this temperature during 30-40 min, whereupon melt is cooled in thin layer to 15-20°C.

EFFECT: improved distribution of curing agent in rubber compound, increased resistance to reversion during prolonged vulcanization of rubber and to thermal-oxidative action.

3 cl, 5 tbl, 7 ex

FIELD: polymer chemistry, in particular plant rubber composition.

SUBSTANCE: clamed composition includes (mass parts): plant rubber 100; sulfenamide 1-3; zinc oxide 5-15; stearic acid 0.5-3.5; antiaging agent 1-2; and sulfur 2-3. Composition of present invention makes it possible to avoid heating of working parts and is useful in manufacturing of damping and power component available in contact with water at temperature from -450C to +700C.

EFFECT: composition of high springback elasticity.

1 ex

FIELD: polymer chemistry, in particular plant rubber composition.

SUBSTANCE: clamed composition includes (mass parts): plant rubber 100; sulfenamide 1-3; zinc oxide 5-15; stearic acid 0.5-3.5; antiaging agent 1-2; and sulfur 2-3. Composition of present invention makes it possible to avoid heating of working parts and is useful in manufacturing of damping and power component available in contact with water at temperature from -450C to +700C.

EFFECT: composition of high springback elasticity.

1 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

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

FIELD: organic chemistry, rubber industry.

SUBSTANCE: invention relates to a chemical compound, namely to polyaniline (poly-p-phenyleneamineimine) that is used as an antiager for rubbers. Polyaniline of the formula: wherein m = n = 1 with molecular mass 25 x 103 Da is used as an antiager. Invention provides enhancing thermostability of vulcanized rubbers.

EFFECT: improved and valuable properties of antiager.

2 tbl, 2 ex

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