Method to manufacture modified fibre of animal origin

FIELD: textile, paper.

SUBSTANCE: method of manufacturing includes the stage 1 of preliminary oxidation of a cystine linkage (-S-S- linkage), existing in an epidermis cell of the fibre of animal origin, the stage 2 of oxidation of the preliminary oxidised -S-S- linkage with ozone for transformation of the -S-S- linkage into at least the condition of double, triple or quarternary oxidation; and the stage 3 of restoration splitting of the -S-S linkage. At the stage 2 ozone is supplied in the form of microbubbles into an aqueous solution containing an anion surfactant containing a C8-24 alkyl group, and the fibre is put in contact with ozone.

EFFECT: efficient manufacturing of a fibre of animal origin for a short period of time, which has superb resistance to subsidence, with low extent of felting when washed in a water system.

6 cl, 3 dwg, 2 tbl, 3 ex

 

2420-181862RU/23

A METHOD of MANUFACTURING the MODIFIED fibers of ANIMAL ORIGIN

Description

The area of technical applications

The present invention relates to a method of manufacturing fibers of animal origin, which gives resistance to shrinkage and resistance to peeling. In particular, the present invention relates to a method of manufacturing fibers of animal origin, which gives resistance to shrinkage and resistance to peeling without compromising excellent natural water-repellent ability of the fibers of animal origin.

The background to the invention

Animal fibers are distinguished by the fact that, depending on the type offiber, they have a characteristic texture, biodegradable, possess excellent water-absorbing ability, the release of moisture, warmth retention, slowing combustion and the ability to staining, and additionally possess a water-repellent ability. With regard to physical characteristics, the fibers of animal origin have characteristics of strength and elasticity sufficient to socks, and also have a high frictional strength and, thus, are unusual fibers, which were valued since ancient times. However, skolachivaniya, the cat is the second occurs when washing the fiber due to the structure of the epidermal tissue fibers of animal origin, and peeling when wearing animal fibers are undesirable characteristics fiber for use in clothing. Accordingly, long ago, efforts were made modification of the fiber surface, which focused mainly on giving antishrink properties, and therefore also manufactured the treatment against peeling.

However, the water resistance of the fibers of animal origin, natural property of fibers of animal origin, sacrificed upon receipt of the fibers in this way. Water-repellent membrane fibers of animal origin has an influence on the moisture absorption and release of moisture, acts as a management tool heat transfer associated with adsorption and desorption of water, and has an effect on heat retention and comfort. In other words, the conventional resistant to shrinkage substances can prevent the shrinkage resulting from the washing, but does not provide sufficient heat retention and comfort.

An example of a typical method of giving antishrink properties is the way to make antishrink properties, which use chlorinated tool, in which the epidermal tissue of the fibers of animal origin is hydrophilic with the aim Razmadze the Oia or removal of the tissue to impart resistance to shrinkage, and, in addition, epidermal tissue polyamide cover epichlorhydrine resin (Hercosett resin production Dick Hercules Co.) to increase the resistance to washing, that is, use the method of giving antishrink properties using the composition of the chlorine/Hercosett. This method is now widely used throughout the world and, probably, it is considered as a standard way of processing wool to give antishrink properties.

Applicants in the following patent documents 1 and 2, a method for making antishrink properties, which use ozone as an alternative way of giving antishrink properties using the composition of the chlorine/Hercosett.

A list of the referenced patent documents

Patent document 1: Japanese patent No. 3722708

Patent document 2: Japanese patent No. 3683879

Brief description of the invention

Technical issues

However, this method is still problematic in that the result of skolachivaniya is the shrinkage that occurs during washing in an aqueous system, and requires increased chemical activity.

The present invention provides a method for the effective production within a short period of time the fibers of animal origin, with excellent resistance to shrinkage, which is unlikely soil is ensured in the wash water system, through the use of ozone to give antishrink properties of the fiber of animal origin.

The way to solve the problem

A method of manufacturing the modified fibers of animal origin according to the present invention includes a stage 1 preliminary oxidation of cystine communication (communication-S-S-), existing in epidermal cell fibers of animal origin, to bring cystine due to a condition of low oxidation state; stage 2 oxidation with ozone pre-oxidized bond-S-S - to bring communication-S-S - at least one state high oxidation state selected from a state binary, ternary and Quaternary oxidation; and stage 3 reductive cleavage of communication-S-S - high degree of oxidation. Using this method, the animal fiber impart resistance to shrinkage and resistance to peeling. In stage 2 provide ozone in the form of micro bubbles in an aqueous solution containing an anionic surface-active substance with a C8-24alkyl group, and an animal fiber interacts with ozone.

Advantages of the invention

Provide according to the present invention in the previous phase 2 ozone in the form of micro bubbles in an aqueous solution containing an anionic surface-active substance with a C 8-24alkyl group, and an animal fiber is treated with ozone, and accordingly, the present invention provides a method for the effective production within a short period of time the fibers of animal origin, with excellent resistance to shrinkage, which is unlikely evolutives in the wash water system.

Brief description of drawings

Figure 1 shows schematically a longitudinal cross-section fibers of animal origin.

Figure 2 presents a drawing illustrating a method of processing with ozone according to one of the examples according to the present invention.

Figure 3 presents explanatory side view of the processing line in one of the examples according to the present invention.

Description of embodiments

The following describes a mechanism for providing resistance to shrinkage and resistance to flaking, disclosed by the present invention, using as an example the structure of the wool fibre. Figure 1 shows schematically a longitudinal section of part of the surface of the wool fiber, taken from the publication Wool Science Review, Vol. 63 (1986). In part epidermal tissue (the cuticle), called scales, epicuticular layer (21), eksekutornya a layer (22), eksekutornya layer B (23) and the deepest layer, i.e. endocuticle layer (24), located in pok is sannam order starting from the outside. In addition, the outer surface epicuticular layer covered with a layer having a thickness of about 0.9 nm, of higher fatty acids (mainly from eicosanol (arachnid) acid), connected through a thioester complex connection with the balance-SH polypeptide chain in epicuticular layer, and an alkyl group eicosanol acid provides an animal fiber excellent waterproof ability.

More specifically, higher fatty acids, especially Aksenova acid with water-repellent ability, representing the outer surface of the fiber, is connected with epicuticular layer (the content of cystine is 12 wt.%) through thioester complex communication, and epicuticular layer forms a structure that is inextricably associated with ekzekutimin layer A (the cystine content of 35 wt.%), located directly under them, thus, reaching thicknesses of approximately 20% of the entire thickness of the epidermis (cuticle), and in this tissue cystine communication is distributed with a high concentration, reaching about 70 wt.% from the content of cystine in the epidermis (cuticle). The remaining 30 wt.% or so, as you know, are eksekutornya layer B (cystine content is 15 wt.%) and endocuticle layer (containing the s cystine is 3 wt.%).

Epidermal tissue mainly consists of Assocation layers A and B and endocuticle layer, but because eksekutornya layer forms A tissue structure, closely related with epicuticular layer, the phenomenon of skolachivaniya occurs in such a way that essentially depends on ecocalculator layer B and endocuticle layer.

When immersing the wool fibres in water appropriate layers absorb water to varying degrees and swell, and naturally, the more developed cystine cross-links, the less is the swelling caused by water. Thus, when immersing the fiber in water most deeply located endocuticle layer which has a low density of cystine cross-links, which swells under the influence of water and lengthened, while the outer eksekutornya layers that have a high density of cystine cross-links, swell to a lesser extent under the influence of water, and, thus, the degree of elongation less. Because of such differences in the elongation caused by the swelling, the edges of the scales go up, resulting in the entanglement of the fibers and skolachivaniya. In more detail, the individual fibers mixed up with each other, entangled part of the further mixing up with other fibers podozdatj external forces, applied to the clothes during washing, and fiber in General come to the confused part, thus causing shrinkage along the whole length of the fibrous masses, resulting in skolachivaniya. Thus, skolachivaniya accompanied by shrinkage.

The animal fiber having excellent resistance to shrinkage and resistance to delamination according to the present invention, receive mainly by chemical modification of the epidermal tissue. This means that the rise of the scales when immersing the fiber in water essentially eliminate due to the substantial alignment of the ability to swell ecocalculator layer B with the ability to swell endocuticle layer, while the water-repellent properties, provided eicosanol acid in the outer surface, are preserved.

This means that basically only eksekutornya layer B selectively attack to destroy the structure of cross-linking, including cystine linkage, at the same time preserving the integral structure epicuticular layer/ecocalculator layer A, which is histologically hard, and at the same time preserving, thus, also water-repellent Aksenovo acid. Because only a portion of the surface layer of the fiber, especially the part involved in the swelling and shrinkage, m is difficiult, and the internal structure of the fiber remains intact, save not only water-repellent ability only fiber, but also preserve fiber strength.

The above-described structural change produced by processing according to the present invention, can be checked by measuring by the method of reflected waves using infrared spectroscopy with Fourier transform (FT-IR (ATR method, the ATR) (or the method of frustrated total internal reflection). In accordance with FT-IR absorption fibers of animal origin, which was subjected to the modifying process, as for the absorption band at a wavelength of 1040 cm-1corresponding to the group of SO3H (sulfate group), and an absorption band at a wavelength of 1024 cm-1corresponding to the group S-SO3Na (Bunte salt), relative absorption with the absorption band corresponding to amide I (1650 cm-1), is equal to 1, higher than the relative absorbance of the untreated fibers of animal origin, indicating that the cross connection ecocalculator layer B is broken.

On the other hand, in the animal fiber obtained according to the usual method of giving antishrink properties, i.e. by treatment with chlorine or a method using a processing chlorine/Hercosett, the integral structure is epicuticular layer/ecocalculator A layer attack directly, that leads to severe damage especially epicuticular layer, and, thus, the water-repellent layer is destroyed, and water resistance, which is a natural ability of the fibers of animal origin, is weakened. In addition, all fiber is oxidized, leading to a decrease in its strength. In addition, the scaled surface normal resistant to shrinkage of the fibers of animal origin is smooth, and resistance to friction that occurs when dragging a single fiber, less than the resistance to friction of the fibers of animal origin in accordance with the present invention, in which the scales are protected, and thus, conventional fiber does not have sufficient resistance to peeling.

This can easily be determined by applying drops of water volume of about 1 ml on a knitted material. First, the drop of water is saved as raw wool after 30 minutes from the time of deposition of drops. This is due to water-repellent ability epicuticular layer. As for the fibers of animal origin that has been typical processing to give antishrink properties, i.e. by treatment with chlorine or a method using a processing chlorine/Hercosett, the drop of water often penetrates into the knitted material in accordance with the s 2 minutes from the time of deposition of drops and completely penetrates within 30 minutes. In contrast, the behavior of (water resistance) drops on the treated product according to the present invention is almost identical to the behavior of droplets on raw wool. Thus, it can be confirmed that the surface condition of natural wool can be saved by use of the method according to the present invention.

Examples of fibers of animal origin for use in the present invention include wool fiber, mohair, Alpaca, cashmere, wool, llama wool, vicuna, camel wool and Angora coat.

Very resistant to shrinkage fiber of animal origin, which has the above properties according to the present invention, can be obtained in accordance with the method of receiving according to the present invention, is described below.

In stage 1 according to the present invention carry out a preliminary oxidation of cystine link in the cell of the epidermis fibers of animal origin to bring cystine due to the low oxidation state. This means that the cystine bond is pre-oxidized state, i.e. in the low state of oxidation. More specifically, cystine bond lead in minoocycline state (SO-S-) or double oxidation (SO2-S-) or mixed in the state, including these forms. In particular, cystine bond is in large numbers in minoocycline condition. Examples of oxidizing agents are preferred for pre-oxidation, include nadseroy acid, peracetic acid, naturalyou acid, neutral and acidic salts of these nagkalat, potassium permanganate and hydrogen peroxide, and can be used separately or in combination of two or more of them. Particularly preferred oxidizing agent is a secondary acid, the potassium persulfate.

In stage 2 according to the present invention pre-oxidized bond-S-S - is subjected to oxidation to achieve one or more States of the high oxidation state of the binary, ternary and Quaternary oxidation. The condition of high oxidation state refers to the state, which includes the form of a double oxidation, triple oxidation (SO2-SO) or Quaternary oxidation (SO-SO2-), or mixed state, including these forms. It is known that it is difficult to break the link-S-S - minoocycline state reducing agent, and it takes a long period of time, but the link in the oxidation state of dual, triple oxidation or Quaternary oxidation cleaved relatively easily, so the link leads mainly to the oxidation state of dual, triple oxidation or che is vertices oxidation.

In stage 2, the ozone is served in the form of micro bubbles in an aqueous solution containing an anionic surface-active substance with a C8-24alkyl group,and the animal fiber is treated with ozone. Surfactant is resistant to ozone and suitable for microdispersion ozone. Ozone after dispersion in the form of microvesicles has a high chemical activity when interacting with the animal fiber, and there is a small probability of skolachivaniya when washing the fibers of animal origin in the aqueous system, thereby providing the possibility of reducing the duration of aging in submerged animal fibers in an aqueous solution containing ozone. Accordingly, eksekutornya part of the layer B preferably and rapidly oxidized by ozone to achieve the status of a high degree of oxidation. The amount of anionic surfactant present in the aqueous solution is preferably in the range from 0.01 wt.% to 0.1 wt.%. Stable processing can be carried out if the amount is in this range. There is a small probability that the treated product will svoylachivaetsya even when washing in the water system.

Preferably, the surface of the but-active substance was anionic surface-active agent, containing at least one salt of an alkali metal hydrophilic group selected from a sulfonic acid (R-SO3H, where R is C8-24alkyl group), carboxylic acids (R-COOH, where R is C8-24alkyl group), a complex ester of sulphuric acid and alcohol (R-O-SO3where R is C8-24alkyl group) and a complex ester of phosphoric acid (R1O-P(O)(OR2)(OX), where R1means C8-24alkyl group, R2means C8-24alkyl group or a hydrogen atom, and X represents a hydrogen atom). More specific examples include salts of linear saturated fatty acids containing C8-24alkyl group; and salts of branched fatty acids containing C8-24alkyl group; a linear or branched C8-24alkylsulfate salt; linear C8-24alkylbenzenesulfonate salt; branched C8-24alkylbenzenesulfonate salt; a linear or branched C8-24alkylsulfonate salt; and (C8-24mono - or dialkylphosphate salt. More preferably, the surfactant is sodium dodecyl sulphate (C12H25OSO3Na).

According to the present invention, the diameter of bubbles of ozone may be in the range from 0.5 to 3.0 μm. It is preferable that the true amount of ozone supplied to the fiber animal about the convergence, ranged from 1.5 to 4% by weight of the fiber. The diameter of the bubbles of ozone, as mentioned above, can be measured using a laser diffraction method/scattering of light.

Stage 3 according to the present invention consists in reducing the breakdown of communication-S-S - double oxidation, triple oxidation or Quaternary oxidation. For example, as a reducing agent, you can use a salt of sulphurous acid. Accordingly, the animal fiber is subjected to recovery processing for the cleavage of cystine (-S-S-) linkage, reduce the density of cystine cross-links ecocalculator layer B, activation of swelling, liquefaction and solubilization in water, and partial removal of protein from the fiber.

In accordance with the method according to the present invention, the density of cystine cross-links ecocalculator layer B is reduced through the implementation of pre-oxidation, oxidation by ozone (high oxidation state) and restorative treatment salt of sulphurous acid to achieve swelling in water, comparable to the swelling of endocuticle, and exception behavior similar to the behavior of bimetallic plates, between ekzekutimin layer B and endocuticle layer, and thus, exceptions to lift up the edges of the scales even when pogruzheny the water obtained fibers of animal origin and avoid shrinkage. In addition, since epicuticular layer and a layer of tiefer eicosanol acid, which covered the surface epicuticular layer, still preserved, it provides a high degree of resistance to shrinkage without compromising water-repellent ability. Furthermore, since stored scales on the fiber, the resistance due to friction when sliding one fiber, higher resistance due to friction of the fibers treated using the method of giving antishrink properties, in which flakes are removed, or using a method of giving antishrink properties, in which a scaly surface is covered with resin and, thus, hinder the movement of the fibers, receiving minor flaking.

The animal fiber obtained in accordance with the method according to the present invention, in particular, retains its inherent nature excellent water resistance and has a very high resistance to shrinkage and resistance to peeling. Resistance to shrinkage fibers of animal origin can be expressed through the use of shrinkage in the result of skolachivaniya or the difference of the coefficients of friction of one fiber in the form of one single value. If resistance to shrinkage expressed through shrinkage resulting skolachivaniya, fiber MS is now origin according to the present invention may exhibit shrinkage in area, component of 10% or less, achieved 10 hours. More preferably it is 5% or less and particularly preferably 3% or less. If resistance to shrinkage expressed as the difference of the coefficients of friction of one fiber, the difference (µawbetween the value obtained in the direction from tip to root (µa), and the value obtained in the direction from the root to the tip (µw), relative to the direction of the scales, preferably less than at least 30% and more preferably smaller by at least 40%, than untreated fibers of animal origin, as the value expressing the coefficient of friction of rest, or as a value showing the coefficient of friction of the movement. In addition, the value of µacomparable with the size of the raw fibers of animal origin, and the value of µwmore at least 30% of similar magnitude unprocessed fibre of animal origin.

The friction coefficient of single fiber was measured according to the method of JIS L 1015 and is measured under the following conditions:

(1) Device: device Röder to determine the coefficient of friction;

(2) Load at suspension: 200 mg;

(3) the Peripheral speed of cylinder: 90 cm/min;

(4) µarefers to the coefficient of friction in the direction from the tip to the root of the fibre consider is Ino scales and µ wrefers to the coefficient of friction in the direction from the root to the tip relative to the scales.

The presence of surface epicuticular layer, providing an animal fiber and water repellent ability, can be tested also by the formation of bubbles on the surface by reaction Allwörden (Wool Science Review, Vol. 63 (1986), in which the animal fibers are immersed in a saturated chlorine water or saturated bromine water.

In one embodiment of the present invention a tape consisting of fibers of animal origin, is first processed by pad-supernemo method for pre-oxidation using an oxidizing agent which is able to oxidize cystine-S-S - bond fibers of animal origin without the use of chlorine-based tools or chlorinated resins; mixed gas of ozone and oxygen is dispersed into ultra-fine bubbles having a diameter in the range from 0.5 to 5 μm, and preferably having a diameter in the range from 0.5 to 3 μm, in water, using a linear mixer and providing the possibility of collisions with previously pre-oxidized fiber animal of origin for a certain period of time to cause gas-phase oxidation reaction in solution, so that cystine link in the woolen fiber Oka is flowed, and cystine bond lead to the condition of high oxidation state; and restorative treatment is carried out on highly oxidized fiber of animal origin for the cleavage of cystine connection.

Pre-oxidation is carried out, generally, by pad (impregnation)-ZAPADNOGO (reaction) method or, in some cases, the method of adding-bear (carry out reaction at room temperature). Usually, when using secondary acidic potassium persulfate, adapted the immersion, and in this case, the processing tool has penetrated into the fiber, and the fiber was oxidized and hydrolethalus and cystine link was cut, leading to deterioration of the strength, elasticity and similar physical properties. However, resistance to shrinkage is not received. In addition, when implementing the method, in which the secondary acid potassium persulfate used in management (impregnation) and in the process keeping (keeping at room temperature), interaction with the fiber did not occur and the epidermis is not oxidized sufficiently, if the temperature of the reaction did not match the room temperature or higher (basically 32°C or higher). Process conditions should be selected in accordance with the type of oxidant and chemical activity of the oxidant in the relationship is to the fiber. In the case of the secondary acid potassium persulfate, however, using the pad (impregnation)-ZAPADNOGO (thermal reaction) method, oxidation occurs only cystine links present in the epidermal part, at the same time prevents the oxidation of the internal parts of the fiber, thus, facilitates the possibility of subsequent translation of the epidermal part in the condition of high degree of oxidation by ozone.

At this stage the preliminary oxidation of the first pre-oxidize (stage 1) eksekutornya layer B. In comparison with fabric ecocalculator layer B, the fabric epicuticular layer and ecocalculator A layer that is in contact with epicuticular layer has a very high density of cystine cross-links and, thus, is very rigid and exhibits chemical resistance and wear resistance. The fabric, which, ultimately, is decomposed by hydrolysis of 6N-hydrochloric acid, is epicuticular part. Thus, histologically, epicuticula treated as a continuous membrane. Accordingly, eksekutornya layer B is relatively more susceptible to oxidation than epicuticular layer and eksekutornya layer A.

This means that at stage 1, according to the present invention, the wetting agent is placed in a bath is with a water solution of an oxidising agent, the bath temperature regulate as much as possible, not to exceed room temperature, add (impregnation) is carried out so that the duration of contact between the animal fiber and the solution was several seconds (about 2-3 seconds), the fibre extracted from plusvocal bath until the moment when the aqueous solution of the oxidant reaches the inner part of the fiber, but after sufficient impregnation of the epidermis with an aqueous solution of oxidizer, and the fiber quickly wring out the calender for throttling captured an aqueous solution of oxidant so that it was within certain limits. Fiber, thus containing a certain amount of an aqueous oxidizer solution, then treated with steam at a temperature of about 95°C to activate the preliminary oxidation reaction, at the same time eliminating the drying of the fiber.

In the description, the term "add" does not mean immersion of the fiber in the solution is simply placing the fiber in a bath, but it means the implementation of impregnation with the exception of the reactions occurring in the bath with immersion, due to the chemical activity of the oxidizer, which is used together with animal fiber. The term refers to the choice of the conditions under which simple reaction occurs, i.e. the choice of wetting agent that has high the capability of penetrating and does not decompose under the influence of oxidizing agent, present in the bath, to suppress the reaction with the fiber by temperature control of the bath so that it was lower for the implementation of immersion within a short period of time of the order of a few seconds, as well as for the implementation of the spin cycle.

Stage 2 in the processing method according to the present invention is the stage in which an animal fiber, pre-oxidized by the oxidizing agent, result in the condition of high degree of oxidation by ozone. Typically, the oxidation with ozone takes a long period of time, and it was difficult to reach the state of oxidation is sufficient for cleavage of cystine linkages. This means that the oxidation of the fibers of animal origin ozone was necessary to perform processing of highly concentrated ozone in the gas phase or ozone in water for 10 to 30 minutes, and under such conditions, the continuous processing was impossible. In contrast, according to the present invention, a preliminary oxidation carried out in stage 1 in the form of pre-treatment, and ozone result in a special form and enter into contact with the fiber in a special way, thus facilitating the achievement of the state of oxidation by ozone in a short period of time and enabling the serial is inogo implementation process.

It is preferable that in the processing of ozone used the device to prevent dispersion of ultra-fine bubbles and to ultra-fine bubbles produced from linear mixer, gathered on the surface of the perforated suction drum to increase the number of collisions of ultra-fine bubbles with fiber.

When the process of oxidation by ozone in the form of bubbles dispersed in water, the presence of bubbles in the water, generally, prevents the wetting of the fiber with a solution and adversely affect the penetration of the solution. According to the present invention, as means for solving this problem, use the method in which the first tape of fibers of animal origin comb sufficiently, using rowing head for education combed sliver, grebenau the tape is wound on the surface of the perforated suction drum, a mixture of ozone and oxygen in the gas phase is converted into ultra-fine bubbles, using a linear mixer, and the solution is sucked off to increase the number of collisions of bubbles with fiber, to allow penetration of ultra-fine bubbles between the fibers, thus contributing to oxidation by ozone.

The present invention is described below in detail in accordance with the relevant stages. The tape of the fiber is animal origin, be used, for example, is combed tape with a linear density of about 25 g/m, and 9 all such combed tape combing, using grebenau head, for education combed tape. Hood is about 1.4 to 4.0 and preferably of 1.66, although it will change depending on the fineness of the wool. The feed rate of combed wool ribbon is from 0.2 m/min to 4.0 m/min and preferably from 0.5 m/min 2.0 m/min

Wool grebenau tape in the form of a strip is dipped in an aqueous solution containing an oxidizing agent and a wetting agent, and wring out the calender. Examples of oxidants include nadseroy acid, salt nadkarni acid or acid salt nadkarni acid, such as secondary acid potassium persulfate, secondary acid sodium persulfate, ammonium persulfate, potassium persulfate and sodium persulfate, potassium permanganate, hydrogen peroxide, naturalyou acid or its salts, peracetic acid or its salts and the like, Especially preferred oxidizer must be in granular form, is easily soluble and remain in a stable condition at 32°C or below after dissolution in aqueous solution, and is therefore secondary acidic potassium persulfate [trade mark "Oxone" (2KHSO5·KHSO·K2SCO4where the active component is KHSO5, 42.8 wt.%), production Du Pot]. Wetting agent must be stable to the oxidizing agent and, thus, the composition of mark “Alcopol 650” (produced by Ciba Specialty Chemicals Inc.) is preferred. The concentration of oxidant change depending on the oxidizing agent, and in the case of the secondary acid potassium persulfate mark "Oxone", its concentration ranges from 10 g/l to 50 g/l and preferably from 20 g/l to 40 g/l, if the moisture absorption is 100%. The concentration of the wetting means is suitably about 2 g/l in case of using Alcopol 650”. The temperature polusovetskogo solution preferably is maintained at the lowest possible level, so as not to cause a reaction in solution. Temperatures range from 15°C to 25°C is particularly preferred. The pH of the solution preferably relates to an acidic environment. More preferably, the pH of the solution is 2.0.

After squeezing in Timna the calender wool fibrous tape is treated with an oxidant. The machining conditions change depending on the type of oxidant. For example, in the case of potassium permanganate, hydrogen peroxide, naturaline acid or peracetic acid, fiber tape can be processed in management with an aqueous solution of such an oxidant, and then kept at room temperature. Duration is keeping fibrous tape change depending on the type and concentration of the oxidant, and she may be from about 2 to 10 minutes. Also, in the case of the secondary acid potassium persulfate, potassium persulfate, sodium persulfate or ammonium persulfate, fibrous tape can be processed in management with an aqueous solution of such oxidizing agent, and then subjected to treatment with steam at normal pressure for the implementation of the preliminary oxidation reaction. The steam treatment conditions may include a temperature of 95°C duration from 5 to 15 minutes. Preferably, a preliminary oxidation being carried out by steaming for about 10 minutes.

One of the features of fibers of animal origin is that the content of cystine (-S-S-) is different in each tissue, which is the epidermis and cortex. According to the present invention epidermal tissue specifically modified in such a way as to give it resistance to shrinkage and resistance to peeling. Oxidation of cystine communication develops sequentially, as shown below, and the link-S-S - not cleaved before the hydrolysis and restorative treatment, ultimately leading to the formation of sulfonic acid (-SO3H).

Formula 1

A distinctive feature of the present invention is that the reaction is carried out according to the pad-aparna method, using an oxidant, such as secondary acid potassium persulfate, to bring the link-S-S - essentially only in minoocycline status, and link-S-S - optionally oxidized at a subsequent stage to the state of a high degree of oxidation using ozone. By adjustment of these operations, pre-exposing the link-S-S - pre-oxidation, and then oxidizing the link-S-S - ozone, as shown in the following diagram, get the reaction rate of the oxidation with ozone is higher than the oxidation rate achieved when using only one ozone or one of the secondary acid potassium persulfate, providing the possibility of post-processing tape of fibers of animal origin.

Formula 2

According to the present invention, a mixture of ozone and oxygen in the gas phase is converted into ultra-fine bubbles and is blown into the water in the direction of the ribbon of fibers of animal origin for the collision, thus causing the reaction in the gas phase to achieve the state's high degree of oxidation. As for the ozone generator, the generator that produces ozone with a capacity of about 250 g/h (for example, the generator of Chlorine production Engineering Co., Ltd.), may sufficiently affect the subsequent processing of the ribbon of fibers of animal origin. the example oxygen (gas) is fed into the generator with a flow rate of 40 l/min, and the resulting ozone (gas) is the mass concentration of 6.5 wt.% and volumetric concentration of 0.1 g/l in a mixed gas. In one example, the optimal conditions include treatment with a mixture of ozone and oxygen in the gas phase with a flow rate of 4 g/min, although it will change depending on the degree of pre-oxidation and other factors. The amount of ozone supplied to impart resistance to shrinkage and resistance to exfoliation of the wool fiber is 6% by weight of fiber or less, and preferably from 1.5% by weight of fiber to 4.0% by weight of the fiber, although it can be modified depending on the hair type.

To ensure effective interaction of ozone (gas) with wool, according to one of the distinctive features of the present invention, to produce a dispersion of gas to more small bubbles in the water, provide the possibility of collision of bubbles with wool and cause the oxidation reactionin situ. Thus, in combination with the very low solubility of ozone in water, only the epidermis fur fabric is oxidized as a result of this, and the inner fabric, i.e. cortical tissue remains intact, resulting in more improved surface modification of wool. The way to convert a mixed gas of ozone and oxygen in ultra-fine bubbles is predpochtitelno is the way in which the mixed gas is fed into the water-jet pump, the water pressure increases and the water is maintained in the direction of the protrusions in the cylinder to obtain ultra-fine bubbles.

As shown in figure 2, woolen tape (2a) in the form of worsted tape, which was subjected to a preliminary oxidation, lay between mesh conveyor belts (1) and (3) stainless steel and served with the surface (10) solution for processing by ozone in the reservoir (9) for processing by ozone, equipped with a suction drum (5). Item 8 refers to the plate to prevent suction of the solution. The mixed gas of ozone and oxygen obtained in the generator (11) ozone, served in a water-jet pump (12) for mixing the gas with the liquid, the water pressure increases to direct the mixture into a linear mixer (13), and ultra-fine bubbles serves to wool fiber tape in the form of worsted tape through the release (6) of the linear mixer (13). For collecting ultra-fine bubbles on wool fiber tape in the form of worsted tape device for collecting ultra-fine bubbles (4) are located about the periphery of the suction drum, and a solution which contains ultra-fine bubbles are sucked off from the Central part (7) of the suction drum in such a way as to promote ultra-fine bubbles towards the woolen fiber tape in the form of greenality. The surface layer of the wool fiber, thereby oxidize. Anionic surfactant containing C8-24alkyl group, is added to the solution to be processed by ozone (aqueous solution) for microdispersion ozone. Position 2b refers to the woolen fiber ribbon, in which the surface layer of the wool fiber is oxidized.

Although the above that ozone is the second most powerful oxidant after fluorine, properties of different ozone in acidic medium and in an alkaline environment. In the acidic environment:

O3+ 2H++ 2e-= O2+ H2O E0= 2,07 V,

and in an alkaline environment:

O3+ H2O + 2e-= O2+ 2OH-E0= 1,24 V

In the acidic environment of the oxidizing power greater solubility of ozone in water and more time half-life is long enough. For example, the half-life is 1 second at pH 10.5 and 105 seconds at a pH of 2.0.

The present invention is carried out in acidic medium at pH 1.5 to pH 2.5, and more preferred conditions include a pH of from 1.7 to pH of 2.0. In cold water, ozone has a high solubility but low chemical activity. To increase the chemical activity of the processing temperatures to be increased, and the temperature may be in the range from 30°C to 50°C. At excessively high temperature results in a greater movement of molecules in a mixed gas of ozone is oxygen, and the mixed gas may come out of the tank for processing. Especially preferred temperature is 40°C. the contact Time of the solution with the fiber (reaction time) is preferably from 20 seconds to 5 minutes. The reaction time, i.e. the time of contact of the solution with the fiber, can be adjusted through the feed speed of the wool fiber tape. For example, when the feeding speed of the fibrous tape 0.5 m/min contact time is 2 minutes, and at a speed of 2 m/min contact time is 33 seconds, and time adjustment reactions provide adjustable resistance to shrinkage and resistance to peeling.

This does not occur until until the wool fiber tape, oxidized with ozone in the tank for treatment with ozone, does not render the reducing agent to cleave the bond-S-S-, as shown in the following diagram.

Formula 3

According to this method is especially actively attack eksekutornya layer B in epidermal tissue and, hence, reduce the density of cystine cross-links, resulting in an increasing degree of swelling by water, is the ability to swelling caused by water, comparable to the swelling endocuticle layer. Thus, the properties of the fibers of animal origin, such properties of bimetallic the Russian plate, eliminate and prevent the rise of the flakes in the water. Thus, the function of repelling water, which is a distinctive feature of wool, not lost, and high resistance to shrinkage and resistance to peeling can be made while maintaining the water-repellent ability.

Type of reducing agent is not specifically limited, and suitable salts of sulphurous acid. Among the salts of sulfurous acid, sodium sulfite, Na2SO3(pH of 9.7) is preferable acidic sodium sulfite NaHSO3(pH 5.5). Because pre-oxidation and oxidation with ozone is carried out in acidic medium, the recovery processing in an alkaline environment is preferred also from the viewpoint of the use of neutralizing treatment. The concentration of sodium sulfite is preferably in the range from 10 g/l to 40 g/l and especially preferably is about 20 g/l, the Temperature is preferably from 35°C to 45°C and particularly preferably about 40°C.

It is preferable to perform washing by water in two stages, allowing the overflow of water removal thus residues of salts of sulfurous acid, and removal of protein released from the treated wool. The temperature is preferably about 40°C.

After washing with water may be added in the final cut is rvoir softening agent and lubricant to improve the texture and predmosti wool fiber Lena. For example, can be added 1 g/l Alcamine CA New (produced by Ciba Specialty Chemicals Inc.) and 1 g/l Croslube GCL (production Crosfields/Miki), and the processing may be carried out at 40°C.

It is preferable to perform drying at a relatively low temperature of about 80°C in the dryer with the air suction to prevent yellowing of the resulting heat.

Compare and review different methods of oxidation, which is carried out in respect of fibers of animal origin, presents the following:

A. Oxidation of only by treatment with ozone

(1) the solubility of ozone in water is very low, amounting to 39.4 mg/l at 0°C to 13.9 mg/l at 25°C and 0 mg/l at 60°C, and the processing time is excessively long because of the low concentrations and is not suitable for further processing from the point of view of carrying out post-processing tape of fibers of animal origin.

(2) Requires a large amount of aqueous solution in which the dissolved ozone.

(3) Requires the device to generate high concentrations of ozone, leading to increasing capital investment.

(4) If using gas, high concentrations of ozone, it is necessary to closely monitor the emissions and the environment in the workplace.

B. comparison of the immersion method with pad-zapornym way of secondary oxidation with acidic potassium persulfate or the like.

(1) the bottom of the links of the side chain, involved in the stabilization of the polymer chain fibers of animal origin, is an ionic bond (-NH3+,-OOC-). High temperature and long time required for a chemical substance, such as a secondary acid, the potassium persulfate was the reaction in the immersion method, so that the potassium ion (+), hydrogen ion (+) or persulfate ion (-) is attracted to the-NH3+or-OOC - and ripped the ionic bond, such as link-S-S-, thus reducing the strength, the degree of elongation and similar properties of the fiber, and thus, is not achieved antishrink effect.

(2) In contrast, according to the method, where the fiber of animal origin are oxidized only by pad-Zapadnoi processing using a secondary acid potassium persulfate, stage adding especially designed for the implementation of immersion in the conditions under which an animal fiber and the secondary acid potassium persulfate do not interact chemically. Accordingly, the temperature of the aqueous solution of the secondary acid potassium persulfate reduce (the temperature at which the aqueous solution remains stable, is 20°C or below); immersion in an aqueous solution is carried out in a short period of time (2-3 seconds), using the wetting means is on at a low temperature, and spinning in the calender carried out immediately for the impregnation of fibers of animal origin in a certain number of secondary acid potassium persulfate. Then the animal fiber is heated by heat treatment, thus providing the possibility of reaction only in those parts where the animal fiber is impregnated with a chemical. In this way the inner part of the fiber is not exposed and oxidized surface layer and an inner fabric remains intact, which contributes to the modification of the epidermal tissue, ie, giving resistance to shrinkage and resistance to delamination, which is the aim of the present invention.

C. Implementation of the treatment with ozone after preliminary treatment secondary acidic potassium persulfate or a similar oxidizing agent.

(1) the animal Fiber after pre-oxidation quickly and easily oxidized by ozone, and oxidation of the fibers of animal origin is completed within a short period of time, providing the possibility of further processing.

(2) Since the animal fiber pre-pre-oxidized, the oxidation reaction is low ozone concentration develops quite quickly, thus allowing further processing the coefficients of the fibers of animal origin, moreover, the process is essentially carried out in an apparatus for generating ozone concentration was low.

(3) So as to use the apparatus for generating ozone concentration was low, it does not deteriorate the environment in the workplace.

(4) as used apparatus for generating ozone concentration was low, reduced capital expenditures.

As described above, in accordance with the two-stage method according to the present invention, unexpectedly and effectively can be achieved by oxidation, which cannot be achieved by oxidation of either oxidant or ozone.

As described above, according to the present invention, cystine bond split evenly by a high degree of oxidation and subsequent recovery of the fibers of animal origin, and the result can be obtained from the animal fiber having a uniform resistance to shrinkage and resistance to delamination by subsequent processing. In the thus treated fiber of animal origin selectively attacked eksekutornya layer B, and the integrated structure including epicuticular/eksekutornya layer A, which histologically is a rigid structure, is protected, and the result is also protected water-repellent aksenaviciute, and water-repellent capacity of all the fibers is maintained, and the strength of the fiber is also saved.

In contrast, in the reaction of chlorination fibers of animal origin cystine bond is oxidized and hydrolyzed with the formation of sulfonic acid (-SO3H), and since the split not only cystine communication, but also cleaved polypeptide chain, which is an animal fiber, the tensile strength and elongation of the fiber is reduced. Fabric containing complex thioester bond formed between eicosanol acid group-SH in polypeptide chain present in the outer membrane of wool fibers, also destroyed, making fiber from hydrophobic to hydrophilic. Thus, by removing the natural water resistance of the coat.

The mechanism of the chlorination reaction is shown below.

Formula 4

Examples

Below the present invention is described in more detail with reference to examples and comparative examples, but the present invention is not limited to the examples, and any appropriate modifications that are consistent with the previous description in the practical application of the present invention, all included in the technical scope of the invention.

A method of measuring shrinkage caused when aleciane

Shrinkage caused by solutionem, measured according to the method WMTM31 (Woolmark Test Method 31), using knitted material with a fill factor (C.F. (KS)) of 0.41, which is taken as a prototype one strip 14 class. Here, the phrase "in accordance with the method WMTM31" means that the measurements were made by performing the test procedures specified in method WMTM31, based on the ISO 6330? used instrument for measuring shrinkage Cubex instead of a test apparatus for washing.

The method of measuring the resistance to peeling

Resistance to peeling can be quantified using tests for peeling according to the standard JIS L 1076.6.1A, and the material having the degree of exfoliation of 3 or more is considered to be resistant to flaking. Tests on determination of exfoliation using the above criteria was performed under the following conditions.

(1) Instrument: instrument company ICI.

(2) Knitted material: used knitted material with parameters 1P18G.

The method for determining water-repellent capabilities

Water resistance was evaluated by the penetration of a liquid drop deposited on a knitted material made from fibers of animal origin. Evaluation criteria were as follows.

A: the Drop remains in the material after 30 minutes (see the first figure for natural fibers of animal origin).

B: Almost all of the drop penetrates into the material for 2-30 minutes.

C: Almost all of the drop penetrates into the material in less than 2 minutes.

It should be noted that water resistance can be assessed by placing a test sample in the form of a fibrous tape on the surface of the water and determine the time after which the sliver will be submerged in the water absorption. Drop remains on fiber ribbon animal according to the present invention after 30 minutes, as is the case with natural fibres of animal origin.

Example 1

Wool fiber tape 2 was treated sequentially using the conveyor line 41, shown in figure 3. In production lines 41 installed: management 31, Zapadnoe device 32, installing 33 for processing by ozone, setting 34 for recovery, the first installation of 35 for wash water, a second unit 36 for washing with water, the device 37 for the introduction of sizing, dryer 38 and the container 39 for storage; transportation speed fiber ribbon 2 was approximately 2 m/min Position 40 refers to the pipeline located above zapornym device 32 and installation of 33 for processing by ozone. Figure 3, stage 1 according to the present invention was carried out in management 31 and suparna device 32, the stage 2 ASU is actulaly installation 33 for processing by ozone, and stage 3 was carried out in the installation of 34 for recovery. In the examples below, the processing performed in the management 31, called "stage adding".

Stage adding

(1) Raw wool material

Nine strands of fibrous tape (25 g/m) from Australian Merino wool with a thickness of 20.7 μm was introduced in grebenau head and wool fiber tape combed, transforming it into grebenau tape by hood, comprised of 1.66. Fibrous tape in worsted tape worked in management in an aqueous solution having the composition shown below, and were pressed in a calender.

(2) the composition of the aqueous solution in management:

Secondary acid potassium persulfate KHSO5at a concentration of 40 g/l (“Oxone” produced by Du Pont), wetting agent “Alcopol 650” at a concentration of 2 g/l (manufactured by Ciba Specialty Chemicals Inc.).

(3) the Conditions:

Contact time: 2 seconds

Temperature: room temperature (25°C)

pH: 2,0

Absorption: 100%.

After wringing in the calender fibrous tape is moved through the steaming process.

Stage steaming

Soaked wool fibrous tape in worsted tape was subjected to steaming on the conveyor grid under the following conditions. Steam treatment for 10 minutes at 95°C, after which the tape was applied to the treatment plant ozone.

Stage of processing the TCI ozone

After steaming fibrous tape was applied to the treatment plant ozone, equipped with a suction device, and was carried out by oxidation with ozone under the following conditions.

(1) Used the ozonizer (“OZAT CFS-3” production Clorine Engineering Co., Ltd.) performance 250 g/h and a tank of oxygen as the oxygen source.

(2) we Obtain the ozone gas was applied in 4 line mixer, using 4 pumps with a capacity of 80 l/min, respectively. Through linear mixers breathed ozone with a flow rate of 10 l/min (each), with a total flow rate of 40 l/min Used the device to prevent dispersion of ultra-fine bubbles, as shown in figure 2, by blowing ultra-fine bubbles for their collision with wool fiber tape suction drum. In addition, to increase the number of collisions of bubbles with ribbon, the processing solution was aspirated from the inside of the drum so that the bubbles moved around the drum. The ozone treatment was made under the following conditions.

(3) the Bubbles of ozone: ultra-fine bubbles had a diameter of from 0.5 to 3.0 μm, the diameter of bubbles of ozone was measured using a laser diffraction method/light scattering, and according to the measurements of 90% or more bubbles had specified diameter).

(4) was Added surfactants shown in table 1, it is recognized in the amount of 0.1 wt.%, in aqueous solution for treatment with ozone.

(5) working Temperature: 40°C

(6) pH: 1,7 (regulated by the addition of sulfuric acid)

(7) contact Time: 33 seconds.

(8) After treatment with ozone fibrous tape was applied to the installation to restore.

Stage recovery processing

Fibrous tape in combed sliver, treated with ozone, were processed under the following conditions at the facility for recovery, provided with a suction device.

(1) was administered 20 g/l of sodium sulfite Na2SO3

(2) pH: 9,7

(3) Temperature: 40°C

(4) contact Time: 33 seconds

(5) After restorative treatment of fibrous tape fed into the machine for washing with water.

The first stage of washing with water

Fibrous tape in combed sliver, past reductive treatment, were treated with warm water at 40°C for 33 seconds in the machine for washing with water, equipped with a suction device. After washing with water of the fibrous tape is additionally fed into the machine for washing with water.

After washing with water of the fibrous tape was applied to the target device for the introduction of fibrous tape lubricant and softener, which is required for subsequent stages.

Processing stage by sizing

Fibrous tape in combed sliver, washed with water, education is atively warm water at 40°C for 33 seconds in the washing water, equipped with a suction device, which was loaded these compositions lubricant and softener. Processing substance: “Alcamine CA New” (produced by Ciba Specialty Chemicals Inc.) at a concentration of 1 g/l and Croslube GCL (manufactured Crosfields/Miki) at a concentration of 1 g/l After treatment with sizing fibrous tape fed into the dryer.

Stage drying

Drying produced at 80°C using the dryer with protocom hot air.

The treated fibrous tape in worsted tape was placed in the storage container, and then subjected combed and spun and got knitted yarn with metric number 48 in two additions and a twist of Z500×S300. After determining the strength and elongation of yarn yarn was processed in knitted material having a surface density corresponding to the fill factor (KS) 0,41, and washed for 1 hour and 3 hours in a test apparatus for washing Cubex. In addition, knitted material with a fill factor (KS) 0,41 were subjected to tests on peeling for 5 hours, using a device for determining the exfoliation of the company ICI. To further study the properties of the treated wool fibre surface of wool fibres were examined visually using an electron microscope Hitachi S-3500N. To study water-repellent abilities processed the OI wool fiber tape was combed and tilled, and took samples weighing 1 g from each of the treated fibrous tapes and raw fibrous tape. The samples were placed on the surface of water in a beaker with a capacity of 1 liter, containing 800 ml of distilled water, and observed, will sink if the samples in water. The results are given in table 1.

Wool fiber ribbon of the example according to the present invention (experiments No. 1-2 to 1-5) were soft and had a view of white color; resistance to shrinkage determined in accordance with the method WMTM31 meets the requirements of the standards for the shrinkage in area for washing machines, certified in accordance with the method Woolmark. Specifically, due to the manner in which the yarn specified in table 1, was obtained with the use of wool sliver in experiments No. 1-2 to 1-5, pieces of knitted material has a fill factor (KS) 0,41 of which took one strip 14 class and used as test samples; and shrinkage resulting skolachivaniya was measured according to the method WMTM31 (Woolmark Test Method 31), based on the ISO 6330, except that used instrument for measuring shrinkage Cubex instead of a test apparatus for washing; it was confirmed that after skolachivaniya 10 hours of testing was less than 10% by area. If Svolochi is the material is not more than 10% after 10 hours of testing by this method of measurement, its resistance to shrinkage, defined according to the methodology WMTM31, meets the standards for the shrinkage in area for washing machines compliance Woolmark. Tests conducted using the device for determining resistance to delamination of the company ICI showed that the previously described variants yarn had a 4-class resistance to peeling. One gram of sample is visually examined by immersion. While raw wool and wool treated with ozone, not immersed in water, even after being on the surface of the water in the beaker in all day and all night, wool, processed according to the method using a chlorinated resin (method using chlorine/Hercosett sank below the water surface in the beaker after being in it for only 2-3 minutes. One of the distinctive features of animal fibers is that they naturally have water-repellent ability, and the results showed that using the present invention can confer resistance to the shrinkage of wool without deterioration of its water-repellent ability.

In contrast, in the experimental example 1-1, where not used surfactant, the shrinkage caused by solutionem, the village is E. 5 hours of processing increased. In the main method among conventional methods of giving antishrink properties, the surface of the wool is treated with chlorine and cover with Hercosett resin (polyamideimide). Thus, although the resistance to shrinkage is achieved, water-repellent ability is lost and the hair can easily become wet and, due to the high thermal conductivity of water, the body temperature of a person who wears clothes made of wool, can be reduced, creating a feeling of cold. The surface of the treated wool was examined visually using an electron microscope Hitachi S-3500N, which allows the possibility of wet wool. Flakes of wool were not disclosed, i.e. no differential effect of friction (D.F.E.), while in raw wool wool flakes were revealed by the water, which was wet coat, leading to solutionyou. Thus, the product of the example was given antishrink ability, thus preventing lifting of the scales of the wool in the water.

In the comparative example (experiment No. from 1-6 to 1-9) used a cationic surfactant, ampholytic surfactant and nonionic surfactant, and the results of tests for shrinkage caused by solutionem, and resistance to delamination were lower in these products.

Example 2

The experiment was carried out the same about the time, as in example 1, except that the surface-active agent, which was added into the solution to be processed by ozone was sodium dodecyl sulphate (C12H25OSO3Na, SDS), and the amount of surfactant was also different. The results are shown in table 2.

As shown in table 2, adding sodium dodecyl sulfate (C12H25OSO3Na, SDS) in an amount in the range of 0.01-0.1 wt.%, can be obtained ultra-fine bubbles of ozone, and the shrinkage caused by solutionem, after 5 hours of treatment was minimal.

Transcript of the number of items on drawings

1. Mesh tape device for processing by ozone (outer tape)

2. Wool fiber ribbon

2a. Wool fiber tape is subjected to a preliminary oxidation

2b. Wool fiber ribbon, in which the surface layer of the wool fiber oxidized

3. Mesh tape device for processing by ozone (inner tape)

4. Fencing drum device for processing by ozone (device to prevent dispersion of ultra-fine bubbles)

5. The suction drum device for processing by ozone

6. The release of the feed solution containing the mixed gas of ozone and oxygen

7. Inlet

8. Plate for significant others the suction of the solution

9. Installation for processing by ozone

10. The surface of the solution to be processed by ozone

11. Ozone generator

12. Circulation pump for circulating the solution containing the mixed gas of ozone and oxygen

13. Linear mixer

21. Epicuticular layer

22. Eksekutornya layer A

23. Eksekutornya layer B

24. Endocuticle layer

25. Intercellular cement

31. The management

32. Zapadnoe device

33. Installation for processing by ozone

34. Installation for recovery

35. The first installation for washing water

36. The second machine for washing water

37. Installation for the introduction of sizing

38. Dryer

39. The storage container

40. Pipeline

41. Line for processing.

1. A method of manufacturing the modified fibers of animal origin, including:
- stage 1 preliminary oxidation of cystine communication (communication-S-S-), existing in the cell of the epidermis fibers of animal origin to bring cystine due to the low oxidation state;
- stage 2 oxidation with ozone pre-oxidized bond-S-S - to bring communication-S-S - at least one state high oxidation state selected from a state binary, ternary and Quaternary oxidation; and
- stage 3 reductive cleavage of communication-S-S-, which is from the being the highest oxidation state;
the method by which impart resistance to shrinkage and resistance to peeling of the animal fiber, characterized in that in stage 2 provide ozone in the form of micro bubbles in an aqueous solution, which contains the anionic surfactant containing C8-24alkyl group, and enter it into contact with animal fiber, where the aqueous solution in which ozone is present in the form of micro bubbles is in an acidic environment with a pH of 1.5 to 2.5, the temperature is in the range from 30°C to 50°C, and the contact time of the solution with the fiber (reaction time) is from 20 to 5 minutes

2. A method of manufacturing the modified fibers of animal origin according to claim 1 in which the anionic surfactant is present in an aqueous solution in an amount in the range from 0.01 wt.% to 0.1 wt.%.

3. A method of manufacturing the modified fibers of animal origin according to claim 1, in which the surfactant is anionic surface-active agent containing at least one salt of an alkali metal hydrophilic group selected from a sulfonic acid (R-SO3H, where R is C8-24alkyl group), carboxylic acids (R-COOH, where R is C8-24alkyl group), a complex ester of sulphuric acid and alcohol (R-O-SO3where R means the AET C 8-24alkyl group) and a complex ester of phosphoric acid (R1O-P(O)(OR2)(OX), where R1means C8-24alkyl group, R2means C8-24alkyl group or a hydrogen atom, and X means a hydrogen atom).

4. A method of manufacturing the modified fibers of animal origin according to claim 1, in which the surfactant is sodium dodecyl sulfate (C12H25OSO3Na).

5. A method of manufacturing the modified fibers of animal origin according to claim 1, in which the bubble ozone has a diameter in the range from 0.5 μm to 3.0 μm.

6. A method of manufacturing the modified fibers of animal origin according to claim 1, in which ozone is injected into the true number in the range from 1.5% to 4.0% by weight of fibers of animal origin.

7. A method of manufacturing the modified fibers of animal origin according to claim 1, in which the surface layer of fibers of animal origin are oxidized by contact animal fibers with ozone.



 

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4 cl, 1 dwg

FIELD: textile fabrics, paper.

SUBSTANCE: invention is related to treatment of cordage used in industrial fishing. Article is submerged into composition for treatment and pulled through it. Composition contains latex BSM-65 of A or B brand, wax emulsion VE-40, water and dye, if required. Then article is preliminarily dried at 40±5°C, the first stage of drying is carried out at 60±10°C for 16-18 minutes. The second stage is realised at 80±10°C for 16-18 minutes and thermally treated at 130±10°C for 1.5-3.5 minutes.

EFFECT: production of flexible, plastic and brightly coloured articles.

3 cl, 4 tbl

FIELD: chemistry.

SUBSTANCE: invention refers to the area of chemical technology of textile fiber materials and refers to the method of treatment of synthetic fiber materials in order to increase their hygienicity. Synthetic fiber materials are exposed to water solution of complex cation of chrome benzoate (III) or water solution of complex cation of aluminum benzoate or water solution of complex cation of copper benzoate (II) with concentration 0.1-0.5 mol/l for 1.5 hours at the temperature 98-100°C, hydromodule 50. Then it is washed twice with the cold water and is dried.

EFFECT: improved hygienic properties of synthetic fibers and materials.

2 ex

FIELD: textiles, paper.

SUBSTANCE: emulsion of superabsorbent of water-in-oil type is applied to the yarn. Oil is a continuous oil phase and contains saturated hydrocarbons. And at least 70 wt % hydrocarbons contain 20 to 32 carbon atoms.

EFFECT: invention provides for the prevention or reduction of sedimentation of superabsorbent or oil on the guide rollers in the process of applying superabsorbent emulsion of water-in-oil type to the yarn.

6 cl, 1 tbl

FIELD: textile, paper.

SUBSTANCE: method of manufacturing includes the stage 1 of preliminary oxidation of a cystine linkage (-S-S- linkage), existing in an epidermis cell of the fibre of animal origin, the stage 2 of oxidation of the preliminary oxidised -S-S- linkage with ozone for transformation of the -S-S- linkage into at least the condition of double, triple or quarternary oxidation; and the stage 3 of restoration splitting of the -S-S linkage. At the stage 2 ozone is supplied in the form of microbubbles into an aqueous solution containing an anion surfactant containing a C8-24 alkyl group, and the fibre is put in contact with ozone.

EFFECT: efficient manufacturing of a fibre of animal origin for a short period of time, which has superb resistance to subsidence, with low extent of felting when washed in a water system.

6 cl, 3 dwg, 2 tbl, 3 ex

FIELD: textiles, paper.

SUBSTANCE: method is characterised by applying on the surface of the complex aramid thread of the processing composition comprising mineral heat resistant odorless oil with a flash point not less than 180°C; a mixture of fatty acid ether and oxyethylated fatty alcohol as emulsifier, alkylpolyoxyethylene phosphate an antistatic agent and a preservative to protection from biological damage with the following ratio of components, wt %: heat-resistant oil - 45-60, a mixture of fatty acid ether and oxyethylated fatty alcohol - 20-30, alkylpolyoxyethylene phosphate - 19.93-24.9, preservative 0.07-0.1. The ratio of fatty acid ether and oxyethylated fatty alcohol in the mixture is 4:1. The derivatives of isatiozolones and oxalidines are used as preservative.

EFFECT: increase in electrical conductivity properties, protection against biological damage while maintaining high physical and mechanical properties of aramid threads and exclusion of irritating odor.

4 dwg, 1 tbl

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