Method of production of cellulose moulded products, cellulosic moulded product and its application

FIELD: textiles, paper.

SUBSTANCE: cellulosic moulded product is proposed with a cellulosic matrix and dispersed therein inclusions of non-polar organic compound(s) which comprises at least one hydrophobic agent increasing viscosity and/or in which the inclusions are surrounded by plain and/or elongated hydrophobisated nanoparticles as the barrier material. A method is also proposed of production of such products by wet-dry extrusion process and their applications as paper or film.

EFFECT: proposed moulded products as compared to unmodified cellulosic fibers have significantly higher ability to accumulate heat or nonpolar active agents, and can be used in the textile industry.

27 cl, 2 dwg

 

The invention relates to a method for producing a pulp molded products with inclusions of at least one nonpolar organic compounds by a process of wet-dry extrusion, molded pulp product and its application.

It is known that the ability of textile fibers and molded products to keep heat can be increased if you combine forming polymer with an organic material with a reversible phase, in which the transition melting/solidification, the conformational transition or misorientation/crystallization can exchange energy with the environment. The degree of energy exchange and the effective temperature range is correlated with the chemical structure, physical change in enthalpy and concentration of the material with reversible phases. It is crucial in the first place, due to a near molecular orientation in the material with the reversible phase is an effect of the energy in the fiber in the molded product or on it.

Known solutions.

First, the materials with reversible phase wrap the layer of organic polymer and then the capsule is introduced into the polymer fiber or applied to the tissue (e.g., EP 1658395 = US 2006/0279017). Microencapsulated materials with reversible phase was also used in the examples in d is the document WO 2005/017247 in obtaining cellulose fibers with temperature-controlled properties according to the method, related to lizella. However, a disadvantage was that the encapsulation material with the reversible phase is separated from the molding or machining. Inevitably requires compromise between the available material for filling capsules and suitability for molding process. In the process of wet-dry extrusion to the microcapsules are, inter alia, requirements such as tonkodispersnoe and distribution of grain size, mechanical and chemical stability, suitability of the material with reversible phases for this application, availability, and price.

In addition, materials with reversible phases can be entered in the polyolefin matrix, or a polymer suspension. It is known, for example, molded from the melt polyolefin fibers that contain materials with reversible phase with a melting point of from 15 to 65°C (US 5 885 475).

Direct introduction of material with reversible phases (for example, polyethylene glycol) in the hollow fiber described in US 4 908 238. However, there refused stabilization material with reversible phases in the molded product. The structure is close to the structure type microconduits. Simple sandwich structure disclosed, for example, in the document US 2003/124278.

According to one particular form of embodiment of the invention WO 03/027365 (= EP 1430169) should be possible after the identification of the material with reversible phases (PCM) for obtaining cellulose fibers in the workpiece. However, there is no permanent binding PMC with matrix material (cellulose), it is also impossible to spin fibers from a mixture of PCM and dissolved cellulose.

Interest, if from a fabric or cellulosic fiber may be released active substances. It is also known for attaching encapsulated materials containing active substances to the surface of the fibers (WO 01/73188) or on the introduction of them into the fibers of (WO 2006/066291). The ability to obtain aromatic substances and active substances in the form of microcapsules is described, for example, in document EP 1243326. Again, microencapsulation due to limited availability proved to be disadvantageous for application on an industrial scale, since the encapsulation is performed separate from forming.

From literature are not aware of any developments that would make it possible to create permanent microinclusions of nonpolar organic compounds in hydrophilic setcoursename polymer, such as cellulose, by adding in raw materials (solvent, cellulose, non-polar organic compounds and mixtures, thickeners and binders) to the spinning solution and the subsequent forming in the same process. Up to the present time, there have been also described that the organic compounds that can be dissolved or suspended in non-polar organic compounds and mixtures, can be used on lesofat as modifiers (changing the range of the melting temperature of the materials with reversible phases, for example, by reducing the melting temperature) or as capable of released active substances, if they were introduced as a permanent non-polar organic microinclusions in hydrophilic setcoursename polymer, such as cellulose.

We only know about the introduction of active substances having nanometer dimensions, in powder form or carbon nanotubes (WO 2004/081267). From here, you can't come to the idea of the introduction of lipophilic substances in the polar cellulose solution.

Proceeding from the prior art, as presented in document WO 2006/066291, the basis of the invention in accordance with this task was to develop a direct method of obtaining pulp molded products with inclusions of non-polar organic compounds and mixtures using direct introduction of these nonpolar organic compounds and mixtures. If necessary, these pulp moulded products must be performed with inclusions of non-polar organic compounds with additional functional additives, which, in particular, accumulate at or near the surface of the inclusions.

In addition, in the framework of this task, it is necessary to develop a technique in which the active substances are dissolved and/or remain in the pulp molded products, and can kontrolowane be given in the environment for a long time.

E is and the problem is solved according to the invention, that

- prepare the emulsion with at least one non-polar organic compound in a solution of cellulose in a solvent and stabilized by adding at least one hydrophobic agent that increases the viscosity

and/or

in emulsion type flat and/or elongated, hydrophobic nanoparticles such as layered silicates, carbon nanotubes or nanofilaments that surround the pear-shaped inclusion nonpolar(s) organic(s) connection(s) to form a suspension,

and

- recrystallizing cellulose to obtain molded products with cellulose matrix in which non-polar(s) organic(s) connection(s) spread(s) in dispersed form.

In this way the pulp moulding and spinning solution, which can be obtained by dissolving cellulose in a suitable solvent, combined with the non-polar organic material which increases the viscosity of non-polar material, so it can be emulsify in the cellulose solution, and which stabilizes the dispersed phase is non-polar material. If you add a flat and/or elongated nanoparticles, such as hydrophobizated layered minerals, such as layered silicates and bentonites, which are stratified in the spinning solution, the dispersed phase is surrounded by a layer of these nanoparticles.

Instead of, or in the stage is the implementation to the pulp, you can use any polysaccharides, in its natural form or obtained by synthesis, and/or a mixture of polysaccharides. Examples are wood cellulose, starch, jute, flax, cotton fluff, chitosan or mixtures thereof.

Suitable solvents are, for example, aqueous solutions of oxides of tertiary amines as N-methylmorpholin-N-oxide, as well as ionic liquids, preferably the acetate ethylmethylketone. It turned out that as the solvent for this method as well to other ionic liquids such as 1-butyl-3-methyl-imidazolidone (BMIMCI), 1-ethyl-3-methylimidazolidine (EMIMCI), 1-butyl-3-methyl-imidazolium (BMIMAc) and 1-ethyl-3-methylimidazolium (EMIMAc), N,N-dimethylacetamide, salts of 1-alkyl-3-methylimidazole.

In the method according to the invention, the receiving and spinning from the physical solution of cellulose is carried out without derivatization due to the fact that they receive the emulsion with at least one non-polar organic compound in a solution of cellulose in N-methylmorpholine-N-oxide or in an ionic liquid and stabilized by the addition of a hydrophobic agent that increases the viscosity (thickening agent), and is formed into a suspension and recrystallizing cellulose, resulting in a gain molded product with a cellulose matrix in which non-polar organic compound distributed in a dispersed manner. Optionally, the emulsion can dobavlat the SJ flat and/or elongated hydrophobizated nanoparticles, as the shell surround enabled droplets nonpolar organic compounds, which leads to further stabilization of the non-polar material.

When working with ionic liquids is particularly advantageous that the processing of suitable solutions of cellulose/salt was carried out at temperatures below 90°C, as the spinning solution, in contrast to solutions of cellulose/aminoxide, does not harden and thereby form remains in a wider temperature range, from room temperature to 120°C. for Example, so you can also handle non-polar materials with a significant vapor pressure at 90°C.

Non-polar organic compound preferably is a hydrocarbon, a wax, beeswax, oil, fatty acid, ester of fatty acid, stearic anhydride, long-chain alcohol or in arbitrary mixture. It usually has a melting temperature below 100°C, preferably a melting point in the range from 0 to 40°C. This is also true for mixtures.

One of the preferred hydrophobic increase the viscosity agent is gidrofobizirovannym nanoscale pyrogenic silicic acid. It increases the viscosity of nonpolar(s) organic(s) connection(s) so that they could emulsify in pulp moulding and spinning the solution. Further approaching what they thickeners are polymers with olefinic and aromatic fractions, such as, for example, the best choice block copolymers, or short-chain polyethylene, or phosphate esters. It is mainly about bicyclic phosphorus esters, which additionally provide fire-retardant action. As a thickener may also be applied hydrophobizated flat and/or elongated nanoparticles. It was unexpectedly found that a sufficient proportion of thickeners from 1 to 50 wt.%, preferably from 5 to 20 wt.%, based on the weight of cellulose, to smooth out a much more significant in comparison with the emulsions of hydrocarbons in water, the difference of density and viscosity of the emulsion of hydrocarbons in pulp moulding and spinning the solution. Nanoscale pyrogenic silicic acid consists essentially of particles with a mean diameter of from 30 to 200 nm, preferably from 40 to 100 nm.

Suitable for the method according to the invention the hydrophobic nanoscale pyrogenic silicic acid is known. In the prior art they are used for thickening solutions (EP 0745372), and to stabilize emulsions water in oil or oil-in-water from the separation of the dispersed phase due to the deposition of pyrogenic silicic acid at the interface oil/water (DE 10 2004 014 704). They can be used for systems with controlled selection.

Flat hydrophobizated nanocast is s also used as a rule, in the proportion of from 1 to 50 wt.%, preferably from 2 to 20 wt.%, particularly preferably 5 to 12 wt.%, in each case, based on the weight of cellulose. It preferably is about modified layered silicates, for example gidrofobizirovannym the bentonite. The particles typically have a length and width approximately from 200 to 1000 nm and a thickness of about 1 to 4 nm. The ratio of length to width to thickness (aspect ratio) is preferably from about 150 to 1000, preferably from 200 to 500. Can also be used hydrophobizated elongated nanoparticles such as carbon nanotubes or carbon nanofilament. Nanotubes usually have a diameter of <1 to 30 nm, nanofilament - about 150-300 nm. Length is up to several millimeters.

The nanoparticles are surrounded by microphases organic material layer nanodispersed structures. Particles have a wonderful property that they stabilize the emulsion during molding, and then act as a binder between the cellulose matrix and included non-polar organic compounds.

"Nanometer" in connection with the present invention are objects that have at least one dimension has a value from 1 to 100 nm, as set out in the technical standard ISO/TS 27687.

Included non-polar organic compounds can also be filled with active the substances. This refers to non-polar active substances which form a solution or suspension with a non-polar organic compounds. Under the active substances are meant preferably of vegetable products such as jojoba oil, butter Mona, evening primrose oil, avocado oil, cocoa butter, essential plant extracts or non-polar extracts, oil-soluble vitamins, like vitamin A, D and E, or insecticides like pyrethroids, especially permethrin, or repellents. The concentration of the active substance or substances can be from 0.001 g / kg to 500 g per kg and more preferably from 50 to 150 g per kg of molded products. The active substance can be controlled to be given in the environment for a long time. This effect can be verified, for example, through resistance to washing functional fiber.

Hydrophobizated nanoparticles inside the pulp molded products can also saturate non-polar and other organic or inorganic substances. Such organic or inorganic substances include, for example, dyes, pigments, fire tools, plasticizers, y substances, UV absorbers, substances with an electric or magnetic conductivity, matting tools, odorous substances, antibacterial substances, fungicides, and on the other functional additives. Due to the weak intermolecular interaction of these molecules adsorb reversibly. It turned out that the excess nanoparticles preferentially accumulate on the surface of molded articles or near the surface of the inclusions. This opens up opportunities to give a molded product additional functional properties. Due to the ability of cellulose to swell molded product after the manufacturing process to saturate non-polar and slightly polar materials, as non-polar and slightly polar materials are transferred from the aqueous phase to the surface of nanoparticles and there bind reversibly as a result of adsorption. This strategy is particularly well suited for substances that appear to act via the gas phase, as insect repellents, odorous substances of any kind or medically active substance. Further additives into the molded products can be: dyes, UV stabilizers, antibacterial agents, flame retardant tools, antistatic agents, crosslinking agents, plasticizers, catalysts.

By adding a non-polar organic compounds and mixtures in concentrations of less than 200% (weight/weight), based on the weight dissolved in the spinning solution of cellulose molded product contains less than 66% (weight/weight) of non-polar organic substances or cm is present.

The method according to the invention leads to a pulp molded products compared to non-modified cellulose fibers have a significantly higher ability to accumulate heat and/or significantly more non-polar active substances, and their effects can be combined with other functions.

In addition, the melting temperature materials with reversible phases can be reduced by mixing with other organic compounds and thereby to set it to the desired value. Further, non-polar organic compounds are suitable as solvents and/or storage environment for nonpolar organic active substances. The active substance can kontrolowane to stand out from impurities in the pulp molded products. You can also use the opposite effect when the fibers with inclusions of non-polar organic compounds absorb gaseous and/or liquid non-polar compounds (harmful substances).

Functional effect is based on the physical effect of heat accumulation and/or on a uniform and precisely levelled the accumulation and release of non-polar active substances, plant extracts, etc. from the inside of the fibers. A suitable choice of the share of non-polar compounds according to this method, you can also get the fiber that you can in order to serve as an absorbing medium for liquid or gaseous non-polar substances. Other functional mechanisms of action can be achieved by selecting a particular functional thickeners or flat nanometer additives, filled with functional active substances.

This method is much more efficient and cheaper to obtain pulp moulded products with the already described effects, such as increased ability to retain heat and the function is controlled selection, because you can handle the material in the mass, and the traditional encapsulation and the introduction of microcapsules fall away. The method according to the invention can be modified. So, for example, utilize a decrease of the melting temperature of the mixtures in order to fit industry standard material with reversible phases to a given temperature or range melting/freezing.

Molded product according to the invention, in particular, in the form of fibers can be processed into textile products, which are used in the clothing industry, as technical textiles and in the sphere of leisure. In particular, the molded articles provided with non-polar active substances can also be used for medical or cosmetic purposes. In addition, molded articles may be used to obtain special paper or films that are filled with active substances.

Pulp moulded products with the according to the invention contain cellulose matrix and dispersed therein include, moreover, the inclusions have one or more stable hydrophobic thickener nonpolar organic compounds.

Non-polar organic compounds are preferably selected from the group comprising hydrocarbons, waxes, bees waxes, oils, fatty acids, esters of fatty acids, stearic anhydrides and long-chain alcohols, all of which have a melting temperature below 100°C. the Proportion of non-polar organic compounds is more than 10 wt.%, preferably more than 30 wt.%, especially preferably more than 40 wt.%, based on the weight of cellulose.

One of the hydrophobic thickeners consists of nanoparticles, preferably of hydrophobic nanoscale pyrogenic silicic acid, and is contained in an amount of from 1 to 50 wt.%, based on the weight of cellulose.

In addition, inclusions can contain one or more active substances from the group comprising vegetable products, jojoba oil, oil Mona, evening primrose oil, avocado oil, cocoa butter, essential plant extracts, non-polar extracts, oil-soluble vitamins, vitamins A, D and E, insecticides, pyrethroids, permethrin and repellents. The active ingredients are contained in an amount up to 50 wt.%, based on the weight of pulp moulded products.

In one particular form of implementation of the molded pulp product contains barriers the hydrated material of the plate-like nanoparticles and/or elongated nanoparticles, through which non-polar organic compounds are held in the inclusions, and the active substances are released in a controlled way. The share of the barrier material is from 1 to 50 wt.%, based on the weight of cellulose.

Other embodiments of the invention related to the barrier material, are disclosed in paragraphs 25-29 of the claims.

In other forms of exercise pulp moulded products in the temperature range from 15 to 45°C have specific latent heat of more than 20 j/g, more preferably 30 j/g, particularly preferably more than 50 j/g

Hereinafter the invention is explained more in two schematic figures.

Shown:

Figure 1: schematic diagram of the cellulose fiber, and

Figure 2: a view in the context of individual inclusions and its environment in the fiber 1.

Figure 1 shows a fiber 1 cellulose matrix 2 and distributed it inclusions 3. Enable 3 contain one or more non-polar organic compounds that are stable at least one hydrophobic thickener.

Details include 3 and surrounding the cellulose matrix is shown schematically in figure 2. In the cellulose matrix 2 dispersed barrier material 4 of the plate-like nanoparticles. In particular, the lamellar particles are in the cellulose matrix 2 separately or races is loiusiana. Around inclusions 3 density barrier material 4 is increased in comparison with its average density in the cellulose matrix 2. In accordance with this inclusion 3 surrounded by a zone of barrier material, through which the non-polar organic compounds and contained in the famous cases of active substances cannot enter into the cellulose matrix 2, or may include only a winding route. A suitable choice and dosage of barrier material 4 can be targeted to regulate the permeability for the active substance (system controlled discharge).

Examples

Example 1. 12.6 kg of a 60%aqueous solution of N-methylmorpholin-N-oxide was added 1 kg of cellulose with an average degree of polymerization of 500 with the addition of 5 g of propylgallate solvent in the apparatus with stirrer volume 37 liters of solvent In the apparatus creates a vacuum of 20 mbar, after which the solvent the device is heated for 6 hours with 20°C to 94°C at a frequency mixing 80 min-1and the evaporated water is condensed in the attached cooler. Shortly before the completion of the dissolution process add 700 g technical paraffin mixture with a peak melting at 30,6°C. then type 35 g gidrofobizirovannogo nanoscale pyrogenic silicic acid to form an emulsion of paraffin in the spinning solution. Thus obtained mixture direct the ut using a spinning nozzle with a hole diameter of 70 μm through an air gap into a water collecting tub. Get regenerated cellulose fibers with a titer of 3.2 dtex, which is cut into staple fiber. This wax cellulose fiber has a heat-absorbing capacity 78 j/g

Example 2

12.6 kg of a 60%aqueous solution of N-methylmorpholin-N-oxide was added 1 kg of cellulose with an average degree of polymerization of 500 with the addition of 5 g of propylgallate solvent in the apparatus with stirrer volume 37 liters of solvent In the apparatus creates a vacuum of 20 mbar, after which the solvent the device is heated for 6 hours with 20°C to 94°C at a frequency mixing 80 min-1and the evaporated water is condensed in the attached cooler. Shortly before the completion of the dissolution process first type of 33.5 g gidrofobizirovannogo layered silicate, and then 125 g of natural beeswax. Thus obtained homogenized for 35 minutes at 85°C and frequency mixing 70 min-1, after which the mixture is spun through a spinning nozzle with a hole diameter of 90 μm through an air gap into a water collecting tub. Get regenerated cellulose fiber titer of 2.0 dtex, which is cut into staple fiber. This contains wax cellulose fiber can be processed into textiles with properties favorable for the skin.

Example 3

12.6 kg of a 60%aqueous solution of 1M-methylmorpholin-N-hydroxy is and add 1 kg of cellulose with an average degree of polymerization of 500 with the addition of 5 g of propylgallate solvent in the apparatus with stirrer volume 37 L. In a solvent, the apparatus creates a vacuum of 20 mbar, after which the solvent the device is heated for 6 hours with 20°C to 94°C at a frequency mixing 80 min-1and the evaporated water is condensed in the attached cooler. In a separate container receive a mixture of 300 g technical paraffin mixture with a peak melting at 30,6°C, which is added is received in a separate mixing tank mixture of 85 g of permethrin (technical mixture of 75% of cisisomer and 25% TRANS-isomer) and 30 g gidrofobizirovannogo layered silicate. Shortly before the completion of the dissolution process in the cellulose solution add a mixture of paraffin and permethrin. Then type 35 g gidrofobizirovannogo nanoscale pyrogenic silicic acid and 10 g of blockcopolymer styrene and butadiene to regulate viscosity. The resulting mixture was homogenized for 20 minutes at 90°C with a frequency mixing 100 min-1. Thus obtained mixture is spun through a spinning nozzle with a hole diameter of 120 μm through an air gap into a water collecting tub. Get regenerated cellulose fiber titer of 2.7 dtex, which is cut into staple fiber. The resulting fiber is resistant to washing the content of the insecticidal active substance permethrin. Contained in this structure, the active substance is constantly supplied to p is the surface of the fiber.

Example 4

12.6 kg of a 60%aqueous solution of N-methylmorpholin-N-oxide was added 1 kg of cellulose with an average degree of polymerization of 500 with the addition of 5 g of propylgallate solvent in the apparatus with stirrer volume 37 liters of solvent In the apparatus creates a vacuum of 20 mbar, after which the solvent the device is heated for 6 hours with 20°C to 94°C at a frequency mixing 80 min-1and the evaporated water is condensed in the attached cooler. Shortly before the completion of the dissolution process add a mixture of 150 g of rapeseed oil, 22 g gidrofobizirovannogo nanoscale pyrogenic silicic acid, 5 g of vitamin E (tocopherol) and 20 g of carbon nanotubes (MWCNT, OD<10 nm, length 5-15 μm). Thus obtained mixture is spun through a spinning nozzle with a hole diameter of 70 μm through an air gap into a water collecting tub. Get regenerated cellulose fibers with a titer of 1.7 dtex, which is cut into staple fiber. The resulting fiber has long selection of rapeseed oil and vitamin E on the surface of the fiber.

1. Pulp molded product with a cellulose matrix and dispergirovannykh in her nonpolar inclusions(s) organic(s) connection(s)which contains at least one hydrophobic agent that increases the viscosity, and/or which enable surrounded PLoS what they and/or elongated gidrofobizirovannym nanoparticles as a barrier material.

2. Pulp molded article according to claim 1, wherein the nonpolar(s) organic(s) compound(I) selected(s) from the group comprising hydrocarbons, waxes, bees waxes, oils, fatty acids, esters of fatty acids, stearic anhydrides and long-chain alcohols, each of which has a melting temperature below 100°C.

3. Pulp molded article according to claim 1, characterized in that the proportion of non-polar(s) organic(s) connection(s) is more than 10%, preferably more than 30%, especially preferably more than 40% calculated on the weight of cellulose.

4. Pulp molded article according to claim 1, characterized in that the inclusions contain one or more active substances from the group comprising vegetable products, jojoba oil, oil Mona, evening primrose oil, avocado oil, cocoa butter, essential plant extracts, non-polar extracts, oil-soluble vitamins, vitamin A, D and E, insecticides, pyrethroids, permethrin and repellents.

5. Pulp molded article according to claim 4, characterized in that the active substance contained in the amount of up to 50%, based on the weight of pulp moulded products.

6. Pulp molded article according to claim 1, characterized in that the proportion of hydrophobic(s) agent(s)that enhance(s) the viscosity is from 1 to 50% based on the weight of cellulose.

7. All the Loozen molded product according to claim 1, characterized in that it as a hydrophobic agent that increases the viscosity, contains nanoscale pyrogenic silicic acid, polymers with olefinic and aromatic fractions, preferably the best choice block copolymers, or phosphate esters.

8. Pulp molded article according to claim 1 or 4, characterized in that it comprises a barrier material of the nanoparticles to retain non-polar organic compounds and for the controlled selection of active substances.

9. Pulp molded article according to claim 8, characterized in that the portion of the barrier material is from 1 to 50% based on the weight of cellulose.

10. Pulp molded article of claim 8, wherein the barrier material is gidrofobizirovannym.

11. Pulp molded article of claim 8, wherein the barrier material contains nanometer hydrophobizated layered silicates, nanometer gidrofobizirovannym bentonite, or nanotubes, or nanofilament.

12. Pulp molded article according to claim 1, characterized in that the inclusion surrounded by a zone with high density barrier material.

13. Pulp molded article according to claim 1, characterized in that it is fiber, and, according to the test according to DIN EN 26330 (1993), the loss of one or more non-polar organic the definition of the compounds relative to the originally contained in the fiber number of the corresponding organic compounds, after 20 washings is less than 20 wt.%.

14. Pulp molded article according to claim 1, characterized in that it is in the temperature range 15 - 45°C is the specific latent heat of more than 20 j/g, more preferably 30 j/g, particularly preferably more than 50 j/g

15. Pulp molded article according to claim 1, characterized in that it as a hydrophobic agent that increases the viscosity, contains a phosphate ester and/or provided with gidrofobizirovannym nanoparticles, filled with fire retardant means, and thus made the fire.

16. The method of obtaining pulp molded products according to claim 1 with inclusions of at least one nonpolar organic compounds by a process of wet-dry extrusion, characterized in that
- prepare the emulsion with at least one non-polar organic compound in a solution of cellulose in a solvent, which used a tertiary amine oxide or an ionic liquid and stabilized by adding at least one hydrophobic agent that increases the viscosity,
and/or
in emulsion type flat and/or elongated hydrophobizated nanoparticles that surround the pear-shaped inclusion nonpolar(s) organic(s) connection(s) to form a suspension, and
- recrystallizing cellulose with obtaining molded the CSOs products cellulose matrix, in which nonpolar(s) organic(s) compound(I) distributed(s) in dispersed form.

17. The method according to item 16, characterized in that the flat hydrophobized products preferred modified layered silicates and elongated particles, nanotubes or nanofilaments.

18. The method according to item 16, characterized in that as a hydrophobic agent that increases the viscosity, using nanometer structure of pyrogenic silicic acid, polymers with olefinic and aromatic fractions, preferably the best choice block copolymers, or phosphate esters.

19. The method according to 17, characterized in that the hydrophobic agents that increase the viscosity, used in the proportion of from 1 to 50%, preferably from 1 to 30% based on the weight of cellulose.

20. The method according to 17, characterized in that the modified layered silicates used hydrophobizated bentonites.

21. The method according to item 16, characterized in that as in hydrophobic(e) agent(s)that enhance(s) the viscosity and flat nanoparticles add dyes, UV stabilizers, antibacterial agents, flame retardant tools, antistatic agents, crosslinking agents, plasticizers and/or catalysts.

22. The method according to item 16, characterized in that as a non-polar organic compounds used hydrocarbons, waxes, bees waxes, is of asle, fatty acids, esters of fatty acids, stearic anhydrides, long-chain alcohols or their mixtures, each with a melting point below 100°C.

23. The method according to item 16, wherein the non-polar(s) organic(s) compound(I) is mixed with other organic substances, which reduce the melting point of nonpolar(s) organic(s) connection(s).

24. The method according to item 16, characterized in that the inclusion of non-polar(s) organic(s) connection(s) are obtained from solutions or suspensions of active substances, preferably non-polar active substances, in nonpolar organic solvents.

25. The method according to paragraph 24, wherein the active substances are used vegetable products such as jojoba oil, butter Mona, evening primrose oil, avocado oil, cocoa butter, essential plant extracts or non-polar extracts, oil-soluble vitamins such as vitamin A, D and E, as well as insecticides, pyrethroids, preferably permethrin, or repellents.

26. The method according to paragraph 24, wherein the concentration of the active(s) of the substance/substances is from 0.001 to 500 g or more per 1 kg of the molded product.

27. The use of pulp molded product according to claim 1 in the textile flat structures, optionally with mixing with other textile fibers, for the floor is placed a special paper or films, in particular, films, rich in active substances.



 

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24 cl, 3 dwg, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to the technology of making fire-resistant fibre, particularly to making silicate-containing fibre. The method of making such fibre involves mixing viscose with silicon dioxide and passing the mixture through bushing openings into a reducing solution. The reducing solution contains 40-150 g/l sulphuric acid, 20-40 wt % sodium sulphate, 0-100 g/l zinc sulphate and 50-1000 mg/l sodium silicate.

EFFECT: obtaining fire-resistant fibre.

10 cl, 1 dwg, 1 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to the technology of making fire-resistant fibre, particularly to making silicate-containing fibre. The method of making such fibre involves mixing viscose with silicon dioxide and passing the mixture through bushing openings into a reducing solution. The reducing solution contains 40-150 g/l sulphuric acid, 20-40 wt % sodium sulphate, 0-100 g/l zinc sulphate and 50-1000 mg/l sodium silicate.

EFFECT: obtaining fire-resistant fibre.

10 cl, 1 dwg, 1 tbl, 7 ex

FIELD: textile fabrics, paper.

SUBSTANCE: invention relates to field of dyeing-finishing manufacturing and can be used at colour execution of products from modified cellulose acetate (CA) fibers. It is described method of manufacturing of painted cellulose acetate fibers, consisting in that spinning solution of cellulose acetate is introduced 8-oxyquinoline in amount 0.5-5.0% from mass of polymer and from it is formed fiber. Fiber is impregnated according to continuous method by water solution of colloidal solution at pH 4.5-7.0, temperature not higher than 20°C and liquor ratio 8-10 during 1-5 minutes, it is wringed out up to additional weight 85-90%, it is steamed at 102-103°C during 2-8 minutes, washed and dried. There are used water solutions of dia-dispersoid solutions of concentration 20-60 g/l at 20-33% content of dia-dispersoids in vendible product.

EFFECT: reduction of power inputs and receiving on CA fibers of even, deep, bright and beautiful by colour of colouring of different colors, allowing high durability against physicochemical influence.

2 cl, 1 tbl, 4 ex

FIELD: textiles, paper.

SUBSTANCE: proposed electret linen which contain a mixture of thermoplastic resin and additives to create a charge. Additives to create a charge include trianilinetriazine materials substituted by ester and substituted by amide. The linen made from mixtures may take the form of films or fabrics of woven fibrous material. The linen of woven microfibre material is suitable for use as a filtering medium. The invention provides a electret linen which can easily be charged using different charging mechanisms, such as corona charge excited by direct current, hydrocharge or a combination thereof.

EFFECT: electret linen has the ability for relative long-lasting charge retention.

25 cl, 5 ex, 3 tbl

FIELD: textiles, paper.

SUBSTANCE: fiber-forming thermoplastic polymer is mixed with silver-bearing microbiocide and spinning fibers is carried out from its melt. As a silver-bearing microbiocide zeolite is used, cured in micellar solution containing silver nitrate, bis (2-ethylhexyl) sulfosuccinate sodium, water and isooctane in the ratio (g/l), respectively (1.0-3.0):(30.0 -120.0):(15.0-45.0):(520-645.0) with simultaneous radiation treatment at a total dose of the absorbed energy of 4.0-6.0 mrad, followed by exposure for 10-30 hours up to the Ag content in the zeolite of 0.05-0.30 wt %.

EFFECT: invention enables to obtain fibers based on available raw materials with stable biocidal activity in wet processing using the minimum amount of silver regarding a broad range of bacteria, viruses and fungi.

3 cl, 1 tbl, 4 ex

FIELD: textiles, paper.

SUBSTANCE: synthetic yarn for production of technical fabrics based on polyamide or polyester is declared, and the way of its production. The thread is prepared from a melt of polyamide or polyester with use of a supplement containing the phosphor with a melting point 150-265 °C, put into the melt of the said polymers with the addition of light- and / or heat stabiliser. As the phosphor the thread contains a colourless organic photoluminescent phosphor of a specified colour of glow in the ultraviolet range. A method of producing the thread involves melting of the granules of the said polymer, insertion of additives into it of a light- and / or heat stabiliser, mixing, punching the melt through a multi-channel spinneret followed by a stretching, forming an integrated thread and winding of it on the packing. At that into the polymer melt with the addition of light- and / or heat stabiliser additionally additive is entered that contains a phosphor with a melting point of 150-265 °C.

EFFECT: invention enables to identify the thread in the technical fabric, while maintaining the high quality and strength properties of synthetic fabric.

12 cl, 1 ex

FIELD: chemistry.

SUBSTANCE: 10-50 wt % portion of granules is held before moulding in a micellar solution containing silver nitrate, sodium bis(2-ethylhexyl)sulphosuccinate, water and isooctane in ratio of (g/l) (0.11-2.75):(30.0-120.0):(2.0-30.0):(539.9-659.2), respectively. Simultaneously, radiation treatment is carried out with total dose of absorbed energy of 1.3-6.0 MRad, with subsequent post-radiation holding to silver content 0.002-0.010 wt % in the granules. Treated granules are mixed with the remaining portion of granules of the same polymer and the moulded from the melt.

EFFECT: invention enhances protective biocidal properties of synthetic fibres, increases stability of biocidal activity during wet processing, using minimum amount of silver.

3 cl, 1 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: multicomponent fibre contains at least two elongated fibre bodies, where the first fibre body consists of a first material containing a phase change material, and the second fibre body consists of a second material and surrounds the first fibre body. The phase change material is in an initial form. The first material contains a viscosity modifier selected from polyolefins having density in the range of 890-970 kg/m3, determined at room temperature according to ISO 1183-2, and melt flow rate in the range of 0.1-60 g/10 min, determined at 190°C with a load of 21.6 kg according to ISO 1133.

EFFECT: high latent heat and strength of the fibre.

24 cl, 8 dwg, 11 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: first, a microscopically homogenised solution is obtained by dispersing 75-25 vol. % cellulose and 25-75 vol. % of at least another fibre-forming polymer in a water-containing ionic liquid while adding stabilisers and completely removing water using shear, temperature and vacuum. The solution is formed through at least one die hole into a fibre or bundle of fibres, which is directed through a conditioned gap while drawing in order to deposit directed jets of the solution via treatment with a temperature-controlled solution of a precipitation agent for cellulose and another fibre-forming polymer, mixed with an ionic liquid so that spinodal layering takes place. The directed jets of the solution are removed from the settling bath and undergo subsequent treatment.

EFFECT: obtained fibre has low swelling capacity and high resistance to wet wearing.

10 cl, 6 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: non-combustible antimicrobial polyethylene terephthalate thread or yarn is a complex or modified antimicrobial or anti-combustion component and has density index of 2-250 tex or 2 texX2-125 texX2.

EFFECT: longevity and safety of textile materials during use, particularly improvement in antimicrobial and fire-protective properties.

10 cl, 5 tbl

FIELD: chemistry.

SUBSTANCE: threads are formed from a molten mixture of propylene and powdered polytetrafluorethylene in amount of 2-4% of the weight of polypropylene. The powder is a mixture of particles with size of 100-900 nm, which is obtained through thermogas dynamic destruction of polytetrafluorethylene.

EFFECT: improved processibility of freshly formed fibres and ready threads.

1 tbl, 2 ex

FIELD: metallurgy.

SUBSTANCE: procedure consists in mixing polymer granulate with particles of filler, in extrusion melt of mixture through draw plate and in drawing or relaxation of produced filament if necessary. Contents of filler in terms of polymer filament is 10-25 wt % and average (D50) dimension of particles is less or equal to 6 mcm. Filler is free from titanium dioxide and consists out of calcium carbonate at lest at 90 wt %. There is fabricated textile flat fabric, particularly non-woven material, by stacking the said polymer filament or its mixture with homogenous or several different natural fibres. The said items are used for hygienic articles, clothes for cleaning, wiping, floor washing. gas and fluids filtering, for insulating and padding materials, for geo-materials etc.

EFFECT: increased contents of filler in filament without deterioration of operation characteristics.

19 cl, 2 tbl, 3 ex

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention relates to antibacterial medication, consisting of silver-containing particles of aluminium sulfate hydroxide, represented by the following formulae (X-I) or (Y-I): (AgaBb-a)bAlcAx(SO4)y(OH)z·pH2O (X-I), where a, b, c, x, y, z and p satisfy inequalities 0.00001≤a<0.5; 0.7≤b≤1.35; 2.7<c<3.3; 0.001≤x≤0.5; 1.7<y<2.5; 4<z<7 and 0≤p≤5, respectively, B represents at least one univalent cation selected from group, consisting of Na+, NH4+, K+ and H3O+, total value (1b+3c), obtained by multiplication of valencies by number of cation moles, satisfies inequality 8<(1b+3c)<12, and A represents anion of organic acid; [AgaBb-a]b[M3-cAlc](SO4)y(OH)2-pH2O (Y- I), where a, b, c, y, z and p satisfy inequalities 0.00001≤a<0.5; 0.8≤b≤1.35; 2.5≤c≤3; 1.7<y<2.5; 4<z<7 and 0≤p≤5, respectively, B represents at least one univalent cation, selected from group consisting of Na+, NH4+, K+ and H3O+, and M represents Ti or Zn. Said antibacterial medication of claimed invention, after its mixing with resin, is used to obtain antibacterial polymer composition, used for production of moulded products, film, nonwoven material, coating, sealant, as well as antifungal medications, antibacterial paper, antibacterial deodorants in form of sprays and agrochemicals. Method of obtaining said antibacterial medication includes stages: addition of water alkali solution, which has univalent cation, and organic acid to mixed solution of aluminium sulfate and/or nitrate, which has univalent cation, in order to initiate hydrothermal reaction with obtaining particles of aluminium sulfate hydroxide, which contain anion of organic acid; and contact of obtained particles with silver-containing water solution in mixing, in order to initiate reaction of ion exchange of several cations of said particles with silver ions.

EFFECT: obtaining antibacterial medication, which possesses high degree of dispersancy, transparency, whiteness and excellent antibacterial properties, especially ability to preserve its antibacterial activity after contact with water.

43 cl, 35 tbl, 21 dwg

FIELD: biotechnology.

SUBSTANCE: deoxyribonucleic acid (DNA) is separated from biological objects on carrier objects - gauze, paper, synthetic fabrics. The biological object - bone, horny tissue - is crushed. It is placed in a test tube containing a lytic buffer solution of the composition: 0.1 M Tris-HCl, 0.1 M EDTA, 0.1 M NaCl, 0.5% N-laurylsarcosil Na and proteinase K, pH 6-7. Cell lysate is obtained and is added with sorbent of magnetic nanoparticles of iron oxide Fe3O4, modified with chitosan. The mixture is stirred and incubated for 25-35 min. The test tube is placed on a magnetic rack and the mixture is divided into fractions - sorbent associated with DNA and the supernatant. The supernatant is removed. The residue is added with poured eluting buffer solution of the composition: 10 mM Tris-HCl, pH 7.4, 100 mM NaCl; 1 mM EDTA, and incubated. The test tubes are placed on a magnetic rack. The mixture is divided into fractions - sorbent - residue and supernatant - DNA, dissolved in the eluting buffer solution. The residue is removed. The final product of DNA is left in the supernatant.

EFFECT: invention enables to obtain DNA from different biological objects and increase the yield of the separated DNA not less than 1,5 times.

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