Polyethylene composition for products with bactericidal properties (variants)

FIELD: biologically active polymer materials.

SUBSTANCE: invention relates to polyethylene compositions showing bactericidal activities and intended for manufacture of various products through molding and extrusion while being suitable for fabrication of nontoxic packing materials for foods and medical tools, for fabrication of medical- and sanitary-destination molding equipment, toys, furniture, plates and dishes, fibers, and textile articles. Composition according to invention comprises high-pressure polyethylene (71.00-99.04%) and bactericidal additive, the former containing 0.10 to 5.00% silver phosphate, silver thiosulfate, or silver stearate. Composition further contains 0.06 to 1.00% of oleic acid amide (Finawax O), 0.20-2.00% calcium carbonate (Omyacarb 2XKA), 0.50-20.00% ethylene/vinyl acetate copolymer, and 0.10-1.00% silica.

EFFECT: imparted high bactericidal activity extending functional qualities of composition allowing use thereof in various industry fields.

3 cl, 5 tbl, 4 ex

 

The invention relates to polymer composite materials, and in particular to compositions of polyethylene compositions with antibacterial properties, intended for production of various products by casting and extrusion, and can be used to obtain non-toxic packaging materials for food and medical instruments, for the manufacture of injection equipment for medical and sanitary purposes, toys, furniture, houseware, to obtain fibers and textiles.

Known composition based on polyolefins, method of production and application. The composition comprises a functionalized polyethylene and stabilizers, which are mixed in the molten state in a screw extruder, RU # 2235742 C2, C08L 23/26, C08L 51/00, 2004.09.10.

Known polymer composition and a method of manufacturing polymer products. The composition comprises a polyethylene or a copolymer of ethylene with vinyl acetate, granular complex modifier (a mixture of primary polyethylene with organosilanes and others), mixed at a temperature below 180°in the extruder, RU # 2203913 C1, C08L 23/04, C08L 23/06, 2003.05.10.

Known polymeric film material and method for producing the film. The material contains a high-pressure polyethylene or a copolymer of ethylene with vinyl acetate and benzene. It is used for film extrusion from the melt n the d pressure, RU # 2067987 C1, C08L 23/04, C08J 5/18, 1996.10.20.

Known composition based on polyethylene with Amida saturated fatty acids, which allows to obtain a product with improved organoleptic characteristics, RU # 2267504 C2, C08L 23/04, SC 5/20, 2006.01.10.

Known polymeric compositions do not possess bactericidal properties.

Known composition with biocidal properties, including as a biocidal additives containing organic compound, RU # 2215010 C1, C09D 5/14, 2003.10.27.

It is known tool that has antimicrobial activity, which represents a water-soluble compound of silver, providing antimicrobial activity against pathogenic bacteria Escherichia coli, Salmonella typhimurium, Staphyllococcus aureus. Bacillus subtilis, Candida albigans, RU # 2278669 C1, A61K 31/717, A61K 36/15, A61K 31/04, 2006.06.27.

Known means and composition have functional limitations, technological characteristics of their individual.

Known plastics having bactericidal properties, containing a high-pressure polyethylene and bactericidal additive, RU # 2232173 C2, C08L 23/06, 08L 27/06, 2004.07.10.

This solution is accepted as the closest analogue of the present invention.

However, it has drawbacks.

As bactericidal additive in the near equivalent of the used extracts from plant material, are not able to give a polymeric composition stoichiometrically properties and to provide antimicrobial action against pathogenic microbes, that reduces the functional quality of the polymer composition and its use.

The present invention laid the solution of the technical problem, which allows to obtain polymer compositions with high antibacterial properties, expand the functional quality and availability.

Option 1.

According to the invention this problem is solved due to the fact that the polyethylene composition for products with antibacterial properties includes a high-pressure polyethylene and bactericidal additive.

The composition additionally contains amide of oleic acid brand "Finawax About, calcium carbonate brand "Omyacarb 2XKA", a copolymer of ethylene with vinyl acetate and silica, as well as bactericidal additive contains phosphate of silver in the following ratio, wt.%:

The high-pressure polyethylene71,00-99,04
Amide of oleic acid brand "Finawax About"0,06-1,00
Calcium carbonate brand "Omyacarb 2XKA"0,20-2,00
A copolymer of ethylene with vinyl acetate0,50-20,00
Silicon dioxide0,10-1,00
Phosphate silver0,10-5,00.

Option 2

According to the invention this problem is solved for scattola, the polyethylene composition for products with antibacterial properties includes a high-pressure polyethylene and bactericidal additive.

The composition additionally contains amide of oleic acid brand "Finawax About, calcium carbonate brand "Omyacarb 2XKA", a copolymer of ethylene with vinyl acetate and silica, as well as bactericidal additive contains silver thiocyanate in the following ratio, wt.%:

The high-pressure polyethylene71,00-99,04
Amide of oleic acid brand "Finawax About"0,06-1,00
Calcium carbonate brand "Omyacarb 2XKA"0,20-2,00
A copolymer of ethylene with vinyl acetate0,50-20,00
Silicon dioxide0,10-1,00
The thiocyanate silver0,10-5,00.

Option 3

According to the invention this problem is solved due to the fact that the polyethylene composition for products with antibacterial properties includes a high-pressure polyethylene and bactericidal additive.

The composition additionally contains amide of oleic acid brand "Finawax About, calcium carbonate brand "Omyacarb 2XKA", a copolymer of ethylene with vinyl acetate and silica, as well as bactericidal additive contains silver stearate in the following with the compared components, wt.%:

The high-pressure polyethylene71,00-99,04
Amide of oleic acid brand "Finawax About"0,06-1,00
Calcium carbonate brand "Omyacarb 2XKA"0,20-2,00
A copolymer of ethylene with vinyl acetate0,50-20,00
Silicon dioxide0,10-1,00
Stearate silver0,10-5,00.

The applicant has not identified the sources containing information about technical solutions, identical to the present invention, which allows to make a conclusion about its compliance with the criterion of "novelty".

Due to the implementation of the distinguishing features of the invention /together with the characteristics specified in the restrictive part of the formula/ achieved significant new object properties:

- the optimal ratio of ingredients extends the functional quality polymer material;

- the presence in the compositions bactericidal additives (phosphate silver - option 1, silver thiocyanate - option 2, silver stearate - option 3) increases antimicrobial properties;

- bactericidal activity allows to obtain a polymeric material, widely used in various industries.

The applicant is not aware of any publication that would contain information, vliyanie distinctive features of invention technical result achieved, in this regard, according to the applicant, it is possible to draw a conclusion on the conformity of the proposed technical solution the criterion of "inventive step".

The method is as follows.

Use the following ingredients:

The high-pressure polyethylene GOST 16338-85, mark "PMD-020", density 0,9185±0.0015 g/cm3, MFR : 2.0 g/10 min (Russia, Kazanorgsintez, "PMD-020") or low-pressure polyethylene GOST 16338-85.

Amide of oleic acid (oleamide) brand Finawax O, CH3-(CH2)7-CH=CH-(CH2)7-CO-NH2molecular formula C17H33CONH2molecular weight 283, melting point 73°C, iodine number 80-95, humidity 0,25% max content of the main substance of 98%, the content of fatty acids and 0.2%, colorless beads are not soluble in water (India, "FineOrganics").

Calcium carbonate brand "Omyacarb 2XKA", average particle size of 2.3 μm, whiteness ISO 11475, 88,7%, oil absorption 24 g/100 g (Turkey, "Omyacarb 2XKA").

A copolymer of ethylene with vinyl acetate brand "Sevilen 11808-340", a density of 0.95±0.005 g/cm3, MFR : 28-40 g/10 min, a weight percentage of vinyl acetate 26-30% (Russia, Kazanorgsintez, "Sevilen 11808-340"). Silicon dioxide (Korea), mark SS SIL 54, the particle size of 4.0 plus or minus 0.2, specific surface area m2/g 550 (+) (-) 40.

Bactericidal additive: phosphate of silver (Option 1), silver thiocyanate (Option 2), silver stearate (who arent 3).

The song get:

Option 1

Mixing in single-screw or twin-screw extruder at temperatures of 150-200°ingredients: polyethylene high pressure amide of oleic acid brand "Finawax About, calcium carbonate brand "Omyacarb 2XKA", of a copolymer of ethylene with vinyl acetate, silica and phosphate of silver.

At the exit of the extruder the mixture is cooled with water.

Option 2

Mixing in single-screw or twin-screw extruder at temperatures of 150-200°ingredients: polyethylene high pressure amide of oleic acid brand "Finawax About, calcium carbonate brand "Omyacarb 2XKA", of a copolymer of ethylene with vinyl acetate, silica and silver thiocyanate

At the exit of the extruder the mixture is cooled with water.

Option 3

Mixing in single-screw or twin-screw extruder at temperatures of 150°-200°ingredients: polyethylene high pressure amide of oleic acid brand "Finawax About, calcium carbonate brand "Omyacarb 2XKA", of a copolymer of ethylene with vinyl acetate, silica and silver stearate.

At the exit of the extruder the mixture is cooled with water.

The invention is confirmed by examples.

EXAMPLE 1

Get the silver phosphate metabolic pathway from soluble silver salts. Phosphate of silver, the resulting compound has a bulk density of 1.25 g/cm3(Option 1).

Get danid silver exchange by means of soluble salts of thiocyanate. The silver thiocyanate, the resulting compound has a bulk density of 1.58 g/cm3(Option 2).

Get stearate silver exchange by means of soluble salts of stearate. The silver stearate, the resulting compound has a bulk density of 0.25 g/cm3(Option 3).

EXAMPLE 2

Option 1

Get polymer composition 1.

Take 99,04 wt.% high pressure polyethylene, 0.06 wt.% amide of oleic acid brand "Finawax About", to 0.20 wt.% calcium carbonate brand "Omyacarb 2XKA", 0.50 wt.% copolymer of ethylene with vinyl acetate, 0.10 wt.% silicon dioxide and 0.10 wt.% phosphate of silver. Mix all ingredients on a twin-screw extruder at a temperature of 150-200°C. At the outlet of the extruder the mixture is cooled with water. The mixture is granulated, and the granules have a size of 2-5 mm

Similarly receive compositions 2, 3 and composition control.

Compositions 1, 2, 3, the composition of the control (without silica and bactericidal additives) and the composition of the nearest analogue is presented in table 1.1.

Option 2

Get polymer composition 1.

Take 99,04 wt.% high pressure polyethylene, 0.06 wt.% amide of oleic acid brand "Finawax About", to 0.20 wt.% calcium carbonate brand "Omyacarb 2XKA", 0.50 wt.% copolymer of ethylene with vinyl acetate,0.10 wt.% silicon dioxide and 0.10 wt.% rodania silver. Mix all ingredients on a twin-screw ex is the ruder at a temperature of 150-200° C. At the outlet of the extruder the mixture is cooled with water. The mixture is granulated, and the granules have a size of 2-5 mm

Similarly receive compositions 2, 3 and composition control.

Compositions 1, 2, 3, the composition of the control (without silica and bactericidal additives) and the composition of the nearest analogue is presented in table 1.2.

Option 3

Get polymer composition 1.

Take 99,04 wt.% high pressure polyethylene, 0.06 wt.% amide of oleic acid brand "Finawax About", to 0.20 wt.% calcium carbonate brand "Omyacarb 2XKA", 0.50 wt.% copolymer of ethylene with vinyl acetate, 0.10 wt.% silicon dioxide and 0.10 wt.% the silver stearate. Mix all ingredients on a twin-screw extruder at a temperature of 150-200°C. At the outlet of the extruder the mixture is cooled with water. The mixture is granulated, and the granules have a size of 2-5 mm

Similarly receive compositions 2, 3 and composition control.

Compositions 1, 2, 3, the composition of the control (without silica and bactericidal additives) and the composition of the nearest analogue is presented in table 1.3.

On the basis of example 2 and tables 1.1, 1.2. and 1.3. determine the optimal limits of ingredients presented in the proposed technical solution.

EXAMPLE 3

Determine the bactericidal activity of the inventive polymer composition.

Take samples 1 and 3 corresponding variantov, 2 and 3, the control sample and the sample closest analogue polymer compositions, see tables 1.1, 1.2. and 1.3.

Bactericidal activity of samples was determined by using the test-cultures of bacteria Escheria coli, Bacillus substilis, Staphylococcus citreus.

Bacteria Staphylococcus citreus seeded lawn on the surface of the SPA and place the samples tightly and press them to the seeded bacteria the surface of the agar. Cup with the sample is placed in a thermostat and grown for 48 hours at a temperature of 28°C.

Similarly seeded with bacteria Escheria coli, Bacillus substilis on the surface of the SPA and place the samples.

Samples 1 and 3 options 1, 2 and 3 form a zone of inhibition of microorganisms 1-3 mm, which confirms their antimicrobial properties.

The data presented in table 2.

Table 2 shows that samples 1 and 3 options 1, 2 and 3 have the effect of inhibiting the growth of microbes (+), the control sample has the effect of partially inhibit the growth of microbes, and the sample closest analogue is no effect of antimicrobial action (-).

Example 3 and table 2 confirm the bactericidal activity of the inventive polymer composition.

EXAMPLE 4

Determine the bactericidal activity of the inventive polymer composition.

Take samples 1 and 3 relevant options 1, 2 and 3, the control sample and the sample closest analogue polymer compositions, see that the Litsa 1.1, 1.2. and 1.3.

Bactericidal activity of samples was determined by using the test-cultures of gram-negative bacteria Pseudomonas fluorescens and gram-positive bacteria Staphylococcus citreus.

The samples examined in liquid nutrient medium. As a liquid nutrient medium take the wort is diluted with water 1 to 3. The nutrient medium is poured into a flask with a volume of 750 ml 50 ml and sterilized at 0.5 ATM for 30 minutes. Samples 1 and 5 are sterilized for 15 minutes, separate from the nutrient medium.

The test culture gram-negative bacteria Pseudomonas fluorescens and gram-positive bacteria Staphylococcus citreus seeded in flasks with culture medium.

In the flask with the test culture gram-negative bacteria Pseudomonas fluorescens make boiled samples area of 7.9 cm2. In the flask with the test culture of gram-positive bacteria Staphylococcus citreus make boiled sample size 8.8 cm2.

The cultivation is carried out at a temperature of 28°within 24 hours on a shaker (220 rpm). At the end of the cultivation determine the optical density of the liquid at a wavelength of 540 nm on the device FEC 56M.

The data presented in table 3.

From table 3 it can be seen that samples 1 and 3 options 1, 2 and 3 have the effect of inhibiting the growth of microbes (+), control samples and the closest analogue is no effect of antimicrobial action (-).

Example 4 and table 3 confirmed the indicate the bactericidal activity of the inventive polymer compositions of options 1, 2 and 3.

Antimicrobial properties of the claimed compositions extend the functionality of the polyethylene compositions according to options 1, 2, 3, and allow their use in various industries in obtaining materials and products molding and extrusion.

The proposed polymer composition can be used:

- to obtain non-toxic packaging materials in the food industry;

- to obtain non-toxic materials, tools in the medical industry;

- for the manufacture of medical equipment and sanitary purposes;

- for the manufacture of toys;

- for the manufacture of furniture;

- for the manufacture of tableware;

- to obtain fibers and textiles.

The proposed polymer composition according to options 1, 2, 3 contain the widely used ingredients in optimal quantities that confirms their compliance with the criterion of "industrial applicability".

The proposed polymer composition according to options 1, 2, and 3 have high antibacterial properties, which expands their functional qualities and can be used in various industries.

Table 1.1
Composition for polyethylene products with the tank is ericidle properties (Option 1)
ComponentsComposition 1Composition 2Composition 3The composition of the controlThe composition closest analogue
The high-pressure polyethylene, wt.%99,0487,2571,0094,00to 99.00
Amide of oleic acid brand "Finawax About", wt.%0,060,451,002,00-
Calcium carbonate brand "Omyacarb HCA", wt.%0,200,902,002,00-
A copolymer of ethylene with vinyl acetate, wt.%0,508,5020,002,00-
Silicon dioxide, wt.%0,100,451,00no-
Phosphate of silver, wt.%0,102,455,00no1.00 Extract from plant materials

Table 1.2
Composition for polyethylene products with antibacterial properties (Option 2)
ComponentsComposition 1Compo is ice 2 Composition 3The composition of the controlThe composition closest analogue
The high-pressure polyethylene, wt.%99,0487,2571,0094,00to 99.00
Amide of oleic acid brand "Finawax About", wt.%0,060,451,002,00-
Calcium carbonate brand "Omyacarb HCA", wt.%0,200.902,002,00-
A copolymer of ethylene with vinyl acetate, wt.%0,508,5020,002,00-
Silicon dioxide, wt.%0,100,451,00no-
The silver thiocyanate, wt.%0,102,455,00no1.00 Extract from plant materials

Table 1.3
Composition for polyethylene products with antibacterial properties (Option 3)
ComponentsComposition 1Composition 2Composition 3The composition of the control The composition closest analogue
The high-pressure polyethylene, wt.%99,0487,2571,0094,00to 99.00
Amide of oleic acid brand "Finawax About", wt.%0,060,451,002,00-
Calcium carbonate brand "Omyacarb HCA", wt.%0,200,902,002,00-
A copolymer of ethylene with vinyl acetate, wt.%0,508,5020,002,00-
Silicon dioxide, wt.%0,100,451,00no-
The silver stearate, wt.%0,102,455,00no1.00 Extract from plant materials

1. Composition for polyethylene products with antibacterial properties, including high density polyethylene and bactericidal additive, characterized in that it further comprises amide of oleic acid brand "Finawax About, calcium carbonate brand "Omyacarb 2XKA", a copolymer of ethylene with vinyl acetate and silica, as well as bactericidal additive contains f the SFAT silver in the following ratio of components, wt.%:

the high-pressure polyethylene71,00-99,04
amide of oleic acid brand "Finawax About"0,06-1,00
calcium carbonate brand "Omyacarb 2XKA"0,20-2,00
a copolymer of ethylene with vinyl acetate0,50-20,00
silicon dioxide0,10-1,00
phosphate silver0,10-5,00

2. Composition for polyethylene products with antibacterial properties, including high density polyethylene and bactericidal additive, characterized in that it further comprises amide of oleic acid brand "Finawax About, calcium carbonate brand "Omyacarb 2XKA", a copolymer of ethylene with vinyl acetate and silica, as well as bactericidal additive contains silver thiocyanate in the following ratio, wt.%:

the high-pressure polyethylene71,00-99,04
amide of oleic acid brand "Finawax About"0,06-1,00
calcium carbonate brand "Omyacarb 2XKA"0,20-2,00
a copolymer of ethylene with vinyl acetate0,50-20,00
silicon dioxide0,10-1,00
the thiocyanate silver0,10-5,00

3. Composition for polyethylene products with antibacterial properties, including high density polyethylene and bactericidal additive, characterized in that it further comprises amide of oleic acid brand "Finawax About, calcium carbonate brand "Omyacarb 2XKA", a copolymer of ethylene with vinyl acetate and silica, as well as bactericidal additive contains silver stearate in the following ratio, wt.%:

the high-pressure polyethylene71,00-99,04
amide of oleic acid brand "Finawax About"0,06-1,00
calcium carbonate brand "Omyacarb 2XKA"0,20-2,00
a copolymer of ethylene with vinyl acetate0,50-20,00
silicon dioxide0,10-1,00
stearate silver0,10-5,00



 

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FIELD: polymer tubes for hot fluid media, such as hot water.

SUBSTANCE: proposed tube has multi-modal polyethylene having density of 0.921-0.950 g/cm3 and containing high-molecular and low-molecular fractions; density of high-molecular fraction is 0.920 g/cm3. Service life of tube before destruction at 95°C and 3.6 Mpa is 165 h as determined in accordance with DIN 16833; elasticity modulus does not exceed 900 Mpa as determined in accordance with ISO 527-2/1B. Multi-modal polyethylene is preferably bimodal polyethylene; low-molecular fraction of such polyethylene has density of 0.955-0.975 g/cm3 and high-molecular fraction has density of 0.920-0.940 g/cm3; mass ratio of low-molecular fraction to high-molecular fraction ranges from 30:70 to 55:45.

EFFECT: enhanced cracking resistance under action of stress; improved characteristics of hydraulic pressure tests at high temperatures; enhanced flexibility.

9 cl, 1 tbl, 1 ex

FIELD: cleansing materials.

SUBSTANCE: invention relates to concentrates designated for using in cleansing equipment for processing polymeric material-extruders, thermoplastic automates and so on in change from color to color and from "pickups" representing particles of decomposed polymer and deposited on the equipment surface. The concentrate for cleansing equipment comprises, wt.-%: carbamide, 0.3-30; dicarboxylic aliphatic (C3-C8)-acid, 0.3-30, and polymeric binding agent, the balance. The concentrate can comprise also, wt.-%: monocarboxylic aliphatic (C14-C16)-acid, 0.3-20; calcium stearate and/or zinc stearate, 0.2-1.0; thiourea, 0.3-15, and biuret, 0.3-15. As a polymeric binding agent polyethylene of low density or copolymer of ethylene and vinyl acetate is used. Invention provides reducing exhaust of ammonia in atmosphere.

EFFECT: improved and valuable properties of concentrate.

7 cl, 5 tbl

FIELD: polymer materials.

SUBSTANCE: polymer molding mass composed of first ethylene polymer A (55-75 wt %) and second ethylene polymer B (25-45 wt %), which is especially suitable for manufacturing thick-wall large-caliber tubes serving to transport gas or water. In particular, polymer A is copolymer of ethylene with C4-C10-α-olefin characterized by content of α-olefin from 0.2 to 5 wt % and a wide bimodal molecular weight distribution while polymer B is the same as polymer A but with different bimodal molecular weight distribution. Molding mass is further characterized by unevenly improved resistance against FNST splitting equal to at least 150 h.

EFFECT: enabled manufacture of thick-wall large-caliber tubes not accompanied with splitting or appearance of creeping problem, which tubes are further characterized by good mechanical properties and homogeneity of material.

13 cl, 1 dwg, 6 tbl, 12 ex

FIELD: polymer materials.

SUBSTANCE: invention provides multimodal polymer composition for manufacturing tubes, which contains 92-00% bimodal polyethylene and 1-8% carbon black and is characterized by melt flowing rate (MFR5) within a range of 0.15 to 0.40 g/10 min, measured according to ISO 1133, and density 955-965 kg/m3. Bimodal polyethylene comprises 42-55% low-molecular weight ethylene homopolymer characterized by melt flowing rate (MFR1.2) within a range of 350 to 1500 g/10 min and 58-45% high-molecular weight copolymer of ethylene with 1-hexene, 4-methyl-1-pentene, 1-octene and/or 1-decene. Tubes manufactured from above composition show design stress at 9.0 MPa and are characterized by good workability, high resistance to slow formation of cracks and fast propagation of cracks as well as high maximum permissible design stress.

EFFECT: improved performance characteristics of tubes.

23 cl, 2 tbl, 4 ex

FIELD: polyethylene-based composition and method for production of molding articles thereof.

SUBSTANCE: claimed composition contains at least 94.5 % of polyethylene with standard density more than 940 kg/m3; 0.05-0.5 mass % of at least one saturated fatty acid amide containing from 8 to 30 carbon atoms; 0-1.15 mass % of auxiliary lubricant and 0-5 mass % of one or more additives selected from antioxidants, acid resistant compounds, anti-UV, dyes and antistatic agents, wherein total amount abovementioned components is 100 %. Said auxiliary lubricant is selected from group containing fatty acids, fatty acid esters, fatty acid salts, monounsaturated fatty acid amides, polyvalent alcohols, containing at least 4 carbon atoms, mono- or polyvalent alcohol monoethers, glycerol esters, paraffins, polysiloxanes, fluorinated polymers and mixtures thereof.

EFFECT: molded articles with improved gliding properties.

12 cl, 3 ex

FIELD: polymer materials.

SUBSTANCE: composition contains 0.05 to 0.24 hydrolyzable silane groups per 100 methylene units and shows standard density at least 954 kg/m3. Flowability factor of composition melt is below 1.5 g/10 min under loading 5 kg and above 2 g/10 min under loading 21.6 kg as measured in accordance with ASTM standard D 1238. Tube manufacture process envisages extrusion of composition in the form of tube in the first stage and subsequent hydrolysis of the tube in order to link cross-linkable polyethylene. Tubes manufactured according to present invention show high long-term resistance to pressure above 12.5 MPa as measured according to ISO/TR standard 9080 and can be used for transportation of fluid substances under high pressure.

EFFECT: improved consumer's quality of tubes.

13 cl, 4 ex

FIELD: rubber materials, polymers.

SUBSTANCE: invention relates to composition based on ethylene-propylene or ethylene-propylenediene rubber and copolymer of ethylene and octyne that is used as an inter-strand filling agent in cables. Method involves preparing the composition containing the following components, mas. p. p.: rubber, 100; copolymer of ethylene and octyne, 25-55; paraffin, 50-170; stearic acid, 4-30; dibutyl phthalate, 4-25; chalk, 500-1600. The composition can comprise aluminum trihydrate additionally, 180-270 mas. p. p. per 100 mas. p. p. of rubber. Invention provides enhancing electric, physical and technological indices of materials used for filling cable articles.

EFFECT: improved and valuable properties of composition.

1 ex

The invention relates to a polyethylene molding mass with a bimodal distribution of molecular weight and high strength pipe from this molding material

FIELD: organic chemistry, chemistry of polymers.

SUBSTANCE: invention relates to using compounds of the general formula (I): as an initiating agent in seed charge formation of β-form for polypropylene resin. Values of radicals R1, R2 and R3 for compound of the general formula (I) are similar and mean (C1-C20)-alkyl, (C5-C12)-cycloalkyl, (C5-C12)-cycloalkyl substituted with 1, 2 or 3 groups of (C1-C10)-alkyl, cyclohexylmethyl, cyclohexylmethyl substituted with 1, 2 or 3 groups of (C1-C10)-alkyl, phenyl substituted with 1, 2 or 3 groups of (C1-C10)-alkyl or (C7-C9)-phenylalkyl. Films prepared by using compound of the formula (I) are characterized by the dullness value above 62% but preferably above 70% or 80% and the content of crystalline β-form above 15%. Also, invention disclosed monoaxial-oriented or biaxial-oriented films, fibers and multiplayer systems.

EFFECT: valuable properties of materials.

4 cl, 2 tbl, 8 ex

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