CZ31976U1 - An antimicrobial dyed fabric with self-cleaning properties, especially for medical and hygienic purposes - Google Patents

Description

Technical field

The technical solution relates to the field of functional equipment of textile, namely antimicrobial dyed textile with self-cleaning properties, where the dye simultaneously performs the function of antimicrobial agent with self-cleaning properties, especially for medical and hygienic purposes.

BACKGROUND OF THE INVENTION

Textile dyeing is primarily done for aesthetic reasons. A variety of dyes are available on the market, which can be divided into several groups according to their final form and the way they are applied. At present, these are mainly direct, disperse, vat and reactive dyes. The choice of dyes depends on the fabric to be dyed and on the desired, in particular color fastness, i.e. end-use properties of the fabric. A solid chemical anchorage to the fabric fiber can only be achieved by reactive dye. While most dyes maintain contact with the fiber of the fabric either based on physical principles or poor bonding interactions, the reactive dyes contain a reactive atom or group forming a chemical covalent bond in the dyeing process with the functional groups of the fabric, in the case of cellulose fibers, hydroxyl groups. This ensures high color fastness and uniformity. High stability to light or in the presence of chlorine can be achieved by the use of vat dyes which, after impregnation of the textile substrate with a soluble form, are converted into an insoluble state which is perfectly fixed in the fiber volume of the fabric.

The functional properties of textiles are subject to high demands from end users. Water-repellency and protection against dirt, vapor permeability, rapid sweat removal, etc. are required. Among the often required properties of textile materials are also antimicrobial activity, which can ensure microbial cleanliness of fabrics or eliminate accompanying effects caused by microorganisms eg odor caused by bacterial decomposition of sweat. anti-odor effect, etc. In these cases, however, it is an added value of the fabric combining protective properties while increasing comfort. There are specific requirements for protection in contact with dangerous microorganisms causing serious health complications - from common viral or bacterial infections to nosocomial or prion infections. The most endangered are the staff of medical facilities coming into contact with infections every day, veterinarians, the Integrated Rescue System and the military. The same risks apply to hospitalized patients.

Conventional sterilization methods, such as saturated steam, ethylene oxide, or radiation, are used to achieve fabric sterility. To date, hypochlorite has been the most commonly used in industrial washing processes. However, it has a one-off effect, moreover it is very irritating and harmful to health. Other disposable disinfectants with a wide spectrum of efficacy intended for emerging regimes of low temperature industrial textile washing, ie chemothermal disinfection, include peracetic acid, hydrogen peroxide can also be used. However, all these preparations are intended solely for disinfection and cleaning before or after use of the fabric, but have no protective effects in the case of direct contact of the fabric with dangerous micro-organisms. In many cases long-term antimicrobial protection is desirable. Biocidal substances with very limited water solubility can be used for long-term protection of textiles. These include the Quart! ammonium salts and modified organosilanes, Triclosan but banned from 2017, silver and other metals such as copper, zinc, gold, cobalt, mercury and their oxides and nanoforms, polycationic amines such as polyhexamethylenebiguanide, N-halamines, organometallic compounds. The use of a number of substances is prohibited by current legislation due to its negative environmental impact, such as the aforementioned Triclosan or polyhexanide or PHMB. Functional biocidal

However, the U1 component often migrates outside the textile fibers. During washing, it is released into the washing waters due to imperfect fixation on the fabric, partial solubility or mechanical stress, thus acting biocidically and in its surroundings and thus negatively affecting the environment. The content of the biocidal component in the treated fabric is gradually reduced.

Phthalocyanines belong to the category of 'functional' dyes, ie dyes which are characterized by other functional properties in addition to their coloristic properties. They are substances characterized by their deep blue color used as highly stable pigments and dyes. A number of world dye producers have brands in their product portfolio based on reactive phthalocyanine dyes. In the case of phthalocyanine derivatives, reactive systems based on chlorotriazine, chlorpyrimidine or vinylsulfone are most commonly used. The vast majority of these are dyes based on copper phthalocyanine. However, phthalocyanines of other metals such as zinc and aluminum are known to exhibit photoactive properties associated with the formation of highly reactive oxygen species acting as strong oxidizing agents. Photoinitiated antimicrobial activity or the ability to destroy dissolved organic pollutants in water is associated with the photo-catalytic properties of phthalocyanine derivatives. It is also known to add water-soluble sulfonated zinc and aluminum phthalocyanine derivatives to washing powders to achieve the photo-bleaching effect of daylight bleaching.

The object of the invention is therefore to provide an antimicrobial dyed fabric with self-cleaning properties with a reactive dye, especially for medical and hygienic purposes, which removes the above-mentioned drawbacks, which, due to its antimicrobial action, also has self-cleaning effects, is easy to recycle. lifetime in prescribed repeated cycles of laundry maintenance and reduced environmental burden during its production.

The essence of the technical solution

The object is solved by providing an antimicrobial dyed fabric having self-cleaning properties with a reactive dyestuff, in particular for medical and hygienic purposes according to the present invention. The essence of this invention is that a functional dye consisting of a photoactive central phthalocyanine with a central aluminum atom and a vinyl sulfone reactive group for generating singlet oxygen by photoinitiation is permanently anchored to the fibers of the fabric by covalent bonding to eliminate microbial attack and contamination with organic pollutants. The general formula of phthalocyanine is:

wherein X is from H, Na, K, Li, and Q is an aromatic moiety having a primary amino group selected from: 4-aminophenyl-, 3-aminophenyl-, 4-methoxy-3-aminophenyl-, 2-methoxy-5-methyl 4-aminophenyl-, 3-sulfo-4-aminophenyl-, 2,5-dimethoxy-4-aminophenyl-, 3-sulfo-4-hydroxy-5-aminophenyl-, 4-methoxy-3-aminophenyl-, 4- sulfo-3-aminophenyl-.

-2GB 31976 U1

The amount of phthalocyanine is from 0.1 to 3 wt. based on fabric weight. In order to achieve high antimicrobial activity, a concentration of 0.5% by weight is most preferred. phthalocyanine in the fabric. In addition to dyeing the fabric to the desired shade, photoactive phthalocyanine also has an antimicrobial effect after irradiation with continuous artificial light at a wavelength of 320 to 700 nm or red light at a wavelength of 600 to 700 nm, and thus also exhibits a self-cleaning effect. The effect of phthalocyanine is initiated by the red region of the light spectrum. This area is part of natural daylight and is not filtered in interior conditions. Virtually every artificial source of interior lighting also contains a greater or lesser degree of red radiation, so there is no need to use special types of lighting.

Conventional textiles are used under the conditions of use, respectively. Wear contaminants become hosts for many microorganisms, including pathogens. On the functionally dyed antimicrobial fabric according to this technical solution, photoinitiation leads to the destruction of organic pollutants and the elimination of these microorganisms, thus preventing their multiplication. The associated elimination of odors caused by the action of microorganisms increases the user comfort of antimicrobial textiles. This innovative multi-function dyeing of textile materials, especially for the healthcare sector, where blue and green shades are usually required, and where, with increasing risks of nosocomial infections, there is scope to reduce them through long-term antimicrobial efficacy by functional treatment of the fabric.

Photoactive derivatives of phthalocyanine produce, due to their interaction with light of appropriate wavelength and the air oxygen molecule, so-called singlet oxygen, whose lifetime in air, unlike other radicals, is only tens of milliseconds. Its radius of action lies in the immediate vicinity of the fabric treated with this phthalocyanine dye. The rigid anchoring of the photoactive phthalocyanine derivative to the textile material by means of a suitable reactive system ensures that the functionality is limited only to that material, which can be called a photoactive fabric. The covalent bond allows a stable, permanent anchorage of the photoactive phthalocyanine to the fibers of the fabric. Phthalocyanine is therefore not released into the environment, as evidenced by stability tests performed by standard procedures. The dyeing of the fabric with reactive phthalocyanine not only provides the desired blue coloration, but also provides light-induced antimicrobial protection of the fabric. In the case where the functionally dyed fabric is not exposed to light, there is no inhibitory effect.

Singlet oxygen as an effective oxidizing agent also affects the organic contamination of the fabric. This is a further advantage of using an antimicrobial fabric according to the invention. Here, the dyeing of the fabric also functions as a carrier for photoactive phthalocyanine. By being chemically bonded to the fibers of the fabric, the functionality of the antimicrobial fabric is assured in repeated maintenance cycles such as washing and chemothermal disinfection. The antimicrobial fabric is also readily recyclable, as opposed to water-soluble or disperse titanium dioxide photocatalytic systems, which need to be separated by complex physical processes.

The antimicrobial fabric of the present invention is made up of either a blend, i.e. cellulose fiber and synthetic fiber, preferably cotton fiber and polyester fiber or Ba / PES, with a longer lifetime compared to the most commonly used all-cotton constructions. When the fabric is mixed, it is formed with a cellulose fiber content of from 50 to 100 wt. and synthetic fiber from 0 to 50 wt.

In a preferred embodiment, the antimicrobial dyed fabric is pre-dyed with other basic dyestuffs, such as a vat dye or a reactive dye or a direct dye, to adjust the desired shade of the fabric. The proven ability of photoinitiation of functional phthalocyanine derivatives in the presence of other types of dyes extends the variability of the available shades and optimization of the desired color fastnesses of textiles and thus the extent of use of the present solution. Both color fastness and antimicrobial treatment of fabrics must meet high durability requirements in the prescribed repetitive laundry maintenance cycles. With an emerging strategy

The requirement of extending the service life of these textiles and reducing the consumption of textile materials as well as functional finishing systems is also added to the circular economy. The most effective way to ecologize textile products and refining technologies is to reduce the necessary raw material inputs, which the lifetime of textiles helps.

Advantages of antimicrobial dyed fabrics with self-cleaning properties especially for medical and hygienic purposes according to this technical solution consist mainly in the fact that thanks to the use of photoactive phthalocyanine it exhibits antimicrobial and self-cleaning effects, it can be combined with other types of dyes without negatively affecting its functionality. or a combination of different staining processes can thus produce different shades of coloring which also exhibit antimicrobial effects and self-cleaning properties. Furthermore, the antimicrobial fabric meets the high durability requirements in the prescribed repeated cycles of laundry maintenance and reduces the environmental burden of its production.

Example of technical solution implementation

Functional dyeing technology for cotton fabrics and mixed fabrics with a cotton fiber content of 50% by weight. % Of polyester fiber 50 wt. or 50/50 Ba / PES have been designed and validated on a laboratory, pilot and operational scale. The reactive dye used for dyeing these fabrics is a central aluminum phthalocyanine dye and a vinyl sulfone reactive group, or FTCA1OH VS, which has been applied by an optimized reactive dye process either alone or in combination with vat or other commercial reactive dyes.

Based on the evaluation of the staining tests, it was found that the concentration of phthalocyanine dye required to achieve high antimicrobial activity was 0.5% FTCA1OH VS by weight of the dyed fabric.

The properties of the functionally dyed fabrics were evaluated according to the relevant standards. The stability of the resulting dye, the rate of singlet oxygen production or photoactivity, the self-cleaning properties by dyeing the Orange I dye, and the antimicrobial properties of the dyed fabrics were tested by the following procedures:

Color fastness:

Duke: ČSN EN ISO 105-E01 in 60 ° C washing: ČSN EN ISO 105-C06 (CIS test) in alkaline sweat: ČSN EN ISO 105Έ04 in acid sweat: ČSN EN ISO 105-E04 in dry abrasion: ČSN EN ISO 105-X12 in wet abrasion: ČSN EN ISO 105-X-12 in light: Q-SUN in NaClO bleaching: ČSN EN ISO 105-E03

Singlet oxygen production. Iodide method

The methodology is based on the oxidation of the iodide present in the iodide reagent to triiodide, whose increment can be monitored spectrophotometrically at a wavelength of 351 nm. The photoactivity rate of functionalized textiles is expressed by the value of < _pii z, which expresses the slope of the linear dependence A (351 nm) = f (t) under defined conditions. To initiate the photocatalytic effect, a red light emitting diode light source was used selectively for excitation of phthalocyanine photosensitizers. The evaluation was performed by placing a circular sector of the fabric in a dish, overlaid with an iodide reagent and illuminated by an LED light source of defined light output at a defined distance from the fabric sample to be tested.

-4GB 31976 Ul

Antimicrobial efficacy:

Percentage inhibition of Escherichia coli bacteria after fabric contact with inoculum under LED light exposure following inoculation on Petri dishes with nutrient agar

Modified standard ČSN EN ISO 20743: 2014 with illuminating light source NARVA LT (36 W / D65) simulating artificial daylight

Self-cleaning Effectiveness: Decomposition of Orange I

Orange I is a water-reactive azo dye. This dye serves as a standard substance for detecting and comparing the photoactivity of samples containing in particular inorganic photocatalysts such as T1O2 and ZnO. The method consists in monitoring the loss of dye by the effect of a fabric dyed with a photoactive phthalocyanine dye spectrophotometrically at a wavelength Z _m and x = 477 nm. The NARVA D65 fluorescent lamp is used for initiation. The determination is carried out by placing the dyed fabric in a vial of 5 ml of a 20 mg / l solution of Orange I. With air, the fabric sample is illuminated and absorbance is monitored over time. Subsequently, a graphical evaluation of the dependence A (477 nm) = f (t) is performed and the half-life τι / 2 is calculated.

Tests demonstrating the antimicrobial effect of the modified fabric were conducted under conditions simulating the natural interior environment. Two sources were chosen for the tests, the D65 fluorescent lamp providing a continuous emission spectrum in the 320 to 800 nm wavelength range replacing natural daylight, which changes its intensity throughout the day and is therefore unsuitable for testing purposes. The second source is the SPIRAX MEGAMAN 2700 K energy saving lamp providing a line emission spectrum.

Example 1: Dyeing of a 100% cotton fabric with reactive phthalocyanine FTCA1OH VS

Material: 100% cotton shirt Carlton canvas, pre-treated, mercerized, basis weight 127 g / m ² , length 35 m, width 150 cm, weight 6.3 kg Machinery: coupon dug, pilot plant

Bath ratio: 1: 5

Bath volume: 31.51

Color saturation: 3%

Technological process:

1. dyeing: preparation of dyeing bath - dosing of dye into water, transfer to the trough of the jug

2. heating the bath to 80 ° C

3. Add 25 g / l Na 2 SO 4 and 2 g / l soda to the bath

4. staining start, 10 minutes / 80 ° C (2 passages)

5. Add 25 g / l Na 2 SO 4 and 2 g / l soda to the bath

6. staining, 10 minutes / 80 ° C (2 passages)

7. Add 25 g / l Na 2 SO 4 and 2 g / l soda to the bath

8. staining, 10 minutes / 80 ° C (2 passages)

9. Add 25 g / l Na 2 SO 4 and 2 g / l soda to the bath

10. staining, 10 minutes / 80 ° C (2 passages)

11. Add 12 g / 1 soda (remaining amount)

12. staining, 50 minutes / 80 ° C (10 passages)

13

14. Cold water washing (2 passages)

15th Finish: 1 g / 1 TANATERGE PURA (Finishing Remover

Reactive dye hydrolyzate), 20 minutes / 95 ° C 4 passages)

16. water wash 10 minutes / 60 ° C (2 passages)

17. Cold water wash 10 minutes (2 passages)

18. drying (NSFR operating frame, 120 ° C, speed 12 m / min)

Properties of 100% cotton fabric dyed with photoactive FTCA1OH VS at 3% saturation:

Coloring Colorlessness production O? Half-life Oranže I Ti [h] 3% FTCAÍOH VS in the water wash 60 ° C C1S English Translation: dry abrasion wet abrasion to the world Q-SUN against nude, chlorine 4-5 / 3-4 / 3-4 3-4 / 3-4 / 4-5 4-5 / 3-4 / 4 4/4/4 4-5 4-5 3K 2 0.1718 2.8 Antimicrobial effect: Inhibition of £ co //: 100%

According to the modified standard ČSN EN ISO 20743, the high antimicrobial effectiveness of the dyed fabric against E. coli was confirmed even during maintenance cycles in the regime prescribed for medical textiles: washing 60 ° C + chemothermal disinfection (CHT):

Antibacterial effect value dyed fabric not washed dyed fabric 10 wash cycles 60 ° C + CHT dyed fabric 25 wash cycles 60 ° C + CHT 4.2 4.6 3.3

Classification of antibacterial activity:

<A <2 weak <A <3 significant

A> 3 strong

The cotton fabric dyed with 3% dye FTCA1OH VS exhibits high color fastnesses with the exception of color fastness to active chlorine and high antimicrobial efficacy, consistent with the maintenance required for the medical sector (min. 25 cycles).

Example 2: Dyeing 100% cotton fabric with a combination of vat dye and reactive phthalocyanine staining FTCA1OH VS

Material: 100% cotton shirt Carlton canvas, pre-treated, mercerized, weight 125 g / m ² , length 260 m, width 160 cm, weight 52 kg

Machinery: Twin Jig Kůsters operating jug,

Bath ratio: 1: 7

Color saturation: 0.253% vat color + 0.575% FTC 1140/170

Technological procedure: (1 passage: 8 minutes)

1. Wetting: 4 passages 95 ° C, 0.5 g / 1 DIADAVIN UN (emulsifying and washing agent) + 1 g / 1

-6GB 31976 Ul

ERKANTOL NR (wetting agent), delete

2. Washing water 95 ° C 2 passages

3. Vat dyeing: 4 passages:

0.046% C.I. VAT YELLOW 33 0.017% C.I. VAT BLUE 66 0.19% C.I. VAT GREEN 1 g / 1 Dekol SN (sequestrant)

Dye dosing: Uvl. pasáži; U in the 2nd passage, then still dyeing 2 passages

Without draining during the 1st passage the addition of 5.3 ml / l NaOH 50% and 3.1 g / l hydrosulfite (so-called.

big kypa), processing another 1 passage

During the next 4 passages add 1.8 ml / 1 NaOH 50% and hydrosulfite 2.5 g / l

Wash cold water 2 passages, drain

Oxidation: 4 ml / l H2O2 35% + 2 g / l sodium bicarbonate, 50 ° C. Dispense during 1st passage, 4 passages in total, omit.

Washing hot water (50 ° C) 2 passages, drain

Finishing - soap: 2 passages 95 ° C 2 g / 1 PLEXENE UL (dispersant), acidify to pH 6-7 (acetic acid), drain Wash warm, cold water

4. Passive phthalocyanine application passage: dye dosing: 1/1 in passage 1, U in passage 2 0.575% FTCA1OH VS, 80 ° C; without draining electrolyte dosing: 80 g / l NaCl and alkali: 8 g / l sodium carbonate in portions after the U passage; followed by further alkali dosing: 120 g / 1 (twice), passage staining (1 hour), drain

Wash cold water 2 passages, and hot water 50 ° C 2 passages, drain

Finishing - soap 1 g / 1 TANATERGE PURA (finishing agent for removal of reactive dye hydrolyzate) 95 ° C, 2 passages, drain Washing hot water 60 ° C 2 passages, cold water 2 passages, drain

5. Drying: NSFR Elitex 120 ° C operating frame, speed 15 m / min

Properties of 100% cotton fabric dyed with vat dye and photoactive FTCA1OH VS in 0.575% saturation:

Coloring Color fastness O- production kíxjz [mlrta] Half-life Oranže i Tis [h] 0.253% kypové in water wash80 ^and C CIS sweat alkaline acid sweat 4/4/4 3-4 / 4 / 4-5 4/4/4 4 / 4-5 / 4-5 0.1128 coloring -ί- 57, 575% FTCASOH VS dry abrasion wet abrasion in light G-SUN against act. chlorine 4 4 4K 2-3 Antimlkrobial effect: inhibition of E. coli: 99%: 3.2

Inhibitory action of the dyed fabric against E. coli during the maintenance cycles in the medical textiles regime: washing 60 ° C + chemothermal disinfection (CHT):

-7 GB 31976 U1

Inhibition [%] dyed fabric not washed colored textile 1 wash cycle 60 ° C + CHT colored textile 10 wash cycles 60 ° C + CHT colored textile 25 wash cycles 60 ° C + CHT colored textile 50 wash cycles 60 ° C + CHT 100 ALIGN! 100 ALIGN! 98 97 95

Cotton fabric dyed with vat dye and dye FTCA1OH VS at a saturation of 0.575% shows high color fastnesses incl. color fastness to active chlorine and high antimicrobial efficacy consistent with repeated maintenance prescribed for the healthcare sector (min. 50 cycles).

Example 3: Dyeing of a 50/50 Ba / PES blend fabric with a combination of vat dye and reactive FTCA1OH VS

Material: 50/50 Ba / PES bed linen TAURUS canvas, pre-treated, bleached mercerized, weight 140 g / m ² , length 100 m, width 160 cm, weight 22.4 kg

Machinery: Twin Jig Kůsters operating jug,

Bath ratio: 1: 7

Color saturation: 0.253% vat color + 0.575% FTC 1140/170

Technological procedure: (1 passage: 8 minutes)

1. Wetting: 4 passages 95 ° C, 0.5 g / 1 DIADAVIN UN (emulsifying and washing agent) + 1 g / 1 ERKANTOL NR (wetting agent), drain

2. Washing water 95 ° C 2 passages

3. Vat dyeing: 4 passages:

0,046% C. I. VAT YELLOW 33 0.017% C. I. VAT BLUE 66 0.190% C. I. VAT GREEN 1.

g / 1 Decol SN (sequestrant)

Dye dosage: bvl. pasáži; He knows in the 2nd passage, then coloring 2 passages

Addition of 5.3 ml / 1 NaOH 50% and 3.1 g / l hydrosulfite (so-called &quot;

big kypa), processing another 1 passage

During the next 4 passages add 1.8 ml / 1 NaOH 50% and hydrosulfite 2.5 g / l

Washing - cold water 2 passages, drain

Oxidation: 4 ml / l H2O2 35% + 2 g / l sodium bicarbonate, 50 ° C. Dispense during 1st passage, 4 passages in total, omit.

Washing hot water (50 ° C) 2 passages, drain

Finishing - soap: 2 passages 95 ° C 2 g / 1 PLEXENE UL (dispersant), acidify to pH 6-7 (acetic acid), drain Wash warm, cold water

4. Passive phthalocyanine passage application: 0.575% FTCA1OH VS dosing bvl. passage, knows in passage 2, 80 ° C; without draining electrolyte addition: 80 g / l NaCl and alkali: 8 g / l sodium carbonate in 4 portions after the VI passage; followed by further dosing of alkali: sodium carbonate 120 g / 1 (twice), staining for 5 passages (1 hour), drain

Wash cold water 2 passages, and hot water 50 ° C 2 passages, drain

Finishing - soap 1 g / 1 TANATERGE PURA (finishing agent for removal of reactive dye hydrolyzate) 95 ° C 2, passages, wash Washing hot water 60 ° C 2 passages, cold water 2 passages, drain

5. Drying: NSFR Elitex 120 ° C operating frame, speed 15 m / min

-8GB 31976 Ul

Properties of mixed textile 50/50 Ba / PES dyed with vat dye and FTCA1OH VS in saturation 0,575%:

Coloring Stáíobarevost production ¹ O2 [mlrr ¹ ] Half-life Oranže I U; 2 [h] 0.253% kypové coloring + 0.575% FTCAÍOH VS In the water Wash 60'C C1S Sweat alkaline Acid sweat Dry abrasion Wet abrasion By nude, chíjon In the light 4/4 / 4-5 3-4 / 4 / 4-5 4/4 / 4-5 4 / 4-5 / 4-5 4-5 3-4 3-4 3-4 0,0914 2.0 Anti microbial effect: E. co / i inhibition: 98%

Inhibitory action of the dyed fabric against E. coli during the maintenance cycles in the medical textiles regime: washing 60 ° C + chemothermal disinfection (CHT):

Inhibition [%] dyed fabric not washed colored textile 1 wash cycle 60 ° C + CHT colored textile 10 wash cycles 60 ° C + CHT colored textile 25 wash cycles 60 ° C + CHT colored textile 50 wash cycles 60 ° C + CHT 100 ALIGN! 100 ALIGN! 98 97 98

The cotton fabric dyed with vat dye and 0.575% dye FTCA1OH VS at a saturation of 0.575% exhibits high dye fastnesses, incl. color fastness to active chlorine and high antimicrobial efficacy consistent with repeated maintenance prescribed for the health sector (min.

50 cycles).

Example 4: Dyeing of 100% cotton fabric with a one-pot process by combining a commercially reactive C.I. REACTIVE BEUE 231 dye and a reactive photoactive phthalocyanine FTCA1 OH VS

Material: 100% cotton Carlton canvas, pre-treated, mercerized, basis weight 125 g / m ² , sample 20 g

Apparatus: Fabomatic staining device Fabomat for sample dyeing by pull-out procedure Ratio 25 bath: 1:10

Color Saturation: 0.5% FTCA1OH VS + 0.2% Sumxxx Turquoise Blue BGF

Technological process:

1. Dosing of the dissolved dye mixture 0.50% FTCA1OH VS + 0.2% C. I. REACTIVE

BFUE 231, heating to 80 ° C heating rate 2 ° C / min

2. Electrolyte addition: 100g / l Na 2 SO 4, staining at 80 ° C for 15 min

3. Alkaline addition: 20 g / l sodium carbonate, staining at 80 ° C for 45 min

4. Cool to 60 ° C, drain

Finishing - Soap: 1 g / 1 TANATERGE PURA (Finishing agent for

31976 U1 removal of reactive dye hydrolyzate) 95 ° C, 20 minutes, drain

6. Washing water at 60 ° C for 10 minutes

7. 2x wash cold water for 10 minutes

8. Drying - Wemer-Mathis laboratory drying frame

Properties of 100% cotton fabric dyed with a one-bath process by combining the commercial reactive dye C. I. REACTIVE BLUE 231 and the reactive photoactive FTCA1OH VS:

Colored Color fastness O- production [min-η Half-life Oranže! t «1 [h] 0.2% C. L REACTIVE BLUE 231 + 0.5% FTGAIOH VS In the water Asks 0 ° C CIS Sweat alkaline Acid sweat Dry abrasion Wet abrasion Vůči akt. chlorine In the light 4-5 / 4-5 / 4 3- 4 / 4-5 / 4-5 4_5 / 4_5 / 4_5 4- 5 / 4-5 / 4-5 4-5 4-5 1-2 2-3K 0.1101 4.9 Antimicrobial effect: inhibition of E. coli. 97%

The dyed fabric has high color fastnesses in addition to the color fastness to active chlorine, and the color fastness to light is also reduced. The fabric exhibits a high antimicrobial effect against the β1 coli bacteria.

Example 5: Dyeing of a 50/50 Ba / PES composite fabric in a one-pot process by combining a commercially reactive C.I. REACTIVE BLUE 21 dye and a reactive photoactive phthalocyanine FTCA1OH VS

Material: 50/50 Ba / PES bed linen TAURUS canvas, pre-treated, bleached basis weight 140 g / m ² , sample 20 g

Apparatus: Labomat Lab Staining Equipment for Sample Extraction Dyeing Bath ratio: 1:10

Color Density: 0.5% FTC 1140/170 + 0.2% C. I. REACTIVE BLUE 21

Technological process:

1. Dosing of dissolved mixture of dyes 0.50 FTCA1OH VS + 0.2% C. I. REACTIVE BLUE 21, heating to 80 ° C heating rate 2 ° C / min

2. Electrolyte addition: 100g / l Na 2 SO 4, staining at 80 ° C for 15 min

3. Alkaline addition: 20 g / l sodium carbonate, staining at 80 ° C for 45 min

4. Cool to 60 ° C, drain

5. Finishing - Soaping: 1 g / 1 TANATERGE PURA (Finishing Agent for Reactive Dye Hydrolysate Removal) 95 ° C, 20 minutes, drain

6. Washing water at 60 ° C for 10 minutes

7. 2x wash cold water for 10 minutes

8. Drying - Wemer-Mathis laboratory drying frame

Properties of 50/50 Ba / PES composite fabric dyed in a single-bath process by combining a commercially reactive C. I. REACTIVE BLUE 21 dye and a reactive photoactive FTCA1OH VS

- 10GB 31976 U1

Coloring Color fastness production -Os k ™ [min ¹ ] Half-life Oranže I T í [2 [h] 0.2% C. 1. REACTiVE BLUE 21+ 0.5% FTCAIOH VS In the water Wash 60 ° C C1S Sweat alkaline Acid sweat Dry abrasion Mofoý otěr Vůči akt. chlorine In the light 4 / 4-5 / 4-5 3-4 / 3-4 / 4-5 4/4 / 4-5 4 / 4-5 / 4-5 4-5 3-4 2 2-3 0.1475 5.2 Anůmikrobiáiní effect: inhibition of £. what//: 100%

The dyed material has high color fastnesses in addition to the color fastness to active chlorine, and the color fastness to light is also reduced. The fabric exhibits a high antimicrobial effect against the β1 coli bacteria.

Industrial applicability

The antimicrobial dyed fabric with self-cleaning properties, especially for medical and hygienic purposes according to the present invention, can be used in particular for the manufacture of clothing for medical staff, but need not only be used in medical facilities but also for other applications such as protective clothing, patient comfort and the aging population, including leisure clothing, functional bedding and interior textiles.

PROTECTION REQUIREMENTS

Claims (5)

Antimicrobial dyed textile having self-cleaning properties, in particular for medical and hygiene purposes, characterized in that a functional dye consisting of a photoactive central aluminum phthalocyanine and a vinyl sulfone reactive group for the generation of singlet oxygen by photoinitiation to the textile is permanently anchored to the fibers of the textile. elimination of microbial attack and contamination by organic pollutants, where phthalocyanine is of the general formula: -SO2-Q-SO2CH2CH2OSO3H wherein X is from H, Na, K, Li, - 11 GB 31976 U1 Q is an aromatic radical having a primary amino group selected from: 4-aminophenyl-, 3-aminophenyl-, 4-methoxy-3-aminophenyl-2-methoxy-5-methyl-4-aminophenyl-, 3-sulfo-4-aminophenyl-, 2,5-dimethoxy-4-aminophenyl, 3-sulfo-4-hydroxy-5-aminophenyl, 4-methoxy-3-aminophenyl, % Of 4-sulfo-3-aminophenyl-, and the amount of phthalocyanine is from 0.1 to 3 wt. based on fabric weight. Antimicrobial dyed fabric according to claim 1, characterized in that the amount of phthalocyanine is 0.5% by weight. Antimicrobial dyed fabric according to claim 1 or 2, characterized in that the fabric is cellulosic. 15 Dec Antimicrobial dyed fabric according to claim 1 or 2, characterized in that the fabric is mixed with a cellulose fiber content of from 50 to 100% by weight. and synthetic fiber from 0 to 50 wt. Antimicrobial dyed fabric according to any one of claims 1 to 4, characterized in that it is 20 pre-dyed with vat dye or reactive dye or direct dye to adjust the desired fabric shade.