WO2014100841A2 - Lyocell ignifuge colorée pour assurer une lumière et une solidité au lavage satisfaisantes - Google Patents

Lyocell ignifuge colorée pour assurer une lumière et une solidité au lavage satisfaisantes Download PDF

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Publication number
WO2014100841A2
WO2014100841A2 PCT/AT2013/000192 AT2013000192W WO2014100841A2 WO 2014100841 A2 WO2014100841 A2 WO 2014100841A2 AT 2013000192 W AT2013000192 W AT 2013000192W WO 2014100841 A2 WO2014100841 A2 WO 2014100841A2
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WIPO (PCT)
Prior art keywords
fibre
dyed
fabric
lyocell
fastness
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Ceased
Application number
PCT/AT2013/000192
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English (en)
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WO2014100841A3 (fr
Inventor
Clemens Bisjak
James Martin Taylor
Marina Crnoja-Cosic
Thomas Richard Burrow
Robert Malinowsky
Ulf Mathes
Christian Baumgartinger
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Lenzing AG
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Lenzing AG
Chemiefaser Lenzing AG
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Publication of WO2014100841A2 publication Critical patent/WO2014100841A2/fr
Publication of WO2014100841A3 publication Critical patent/WO2014100841A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/58—Material containing hydroxyl groups
    • D06P3/60—Natural or regenerated cellulose
    • D06P3/6008—Natural or regenerated cellulose using acid dyes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/58—Material containing hydroxyl groups
    • D06P3/60—Natural or regenerated cellulose
    • D06P3/6025—Natural or regenerated cellulose using vat or sulfur dyes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/82—Textiles which contain different kinds of fibres
    • D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
    • D06P3/8219—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and amide groups

Definitions

  • This invention relates to lyocell fibres made flame-resistant by incorporating flame-resistant pigments and dyed with dyestuffs giving good light and washing fastness.
  • Textile materials vary considerably in their ability to resist flame and hence protect underlying materials. Most fabrics made from natural fibres and from synthetic fibres will burn when exposed to flame. The rate of burn and ease of ignition are determined primarily by the chemical nature of the polymer from which the fibre is made and the construction of the fabric. Many polymers, such as cellulose, polyester and nylon will burn readily. The rate of burn is lower the heavier a fabric is. Wool is the most common natural fibre which has flame resistant properties to some degree - heavy weight wool fabrics will not burn readily and have long been used in firefighter's clothing.
  • Fabrics can be treated to make them flame resistant by applying an
  • the first FR treated fabrics used inorganic salts such as aluminium hydroxide, antimony trioxide and borates to make cotton fabrics flame resistant. These were effective but were non-durable to washing.
  • the first flame resistant cellulosic man made fibres produced were made by the viscose process.
  • a high viscosity liquid flame resistant additive was dispersed in the spinning solution prior to extrusion of the fibre.
  • the liquid was trapped in the cellulose by physical means as very small bubbles.
  • the result was effective as a flame resistant fibre, but the additive could be removed by repeated washing.
  • the strength of the fibre was reduced in proportion to the amount of additive included.
  • the additive was withdrawn from the market due to safety concerns and production of the fibre was discontinued.
  • An improved flame resistant viscose fibre can be produced by using a solid pigment flame retardant.
  • Fibre of this type will be referred to as FR viscose.
  • the pigment is finely ground and mixed with the spinning solution prior to extrusion of the fibre. The result is a dispersion of the insoluble particulate additive in the fibre.
  • the strength of the fibre is reduced in proportion to the amount of additive included. All of the cellulose in the fibre contains some of the additive and the additive cannot be removed by washing or normal fabric dyeing or finishing processes. Hence the result of the process is an inherently flame resistant fibre.
  • a well-known fibre of this kind is Visil®, which contains silica pigment flame retardant.
  • a further improvement can be achieved by incorporating the solid pigment flame retardant in the spinning solution used to produce modal fibre.
  • the modal process is a modified viscose process designed to produce a fibre with a higher strength and higher wet modulus than normal viscose.
  • the resultant fibre containing the flame retardant pigment is inherently flame resistant. It is stronger than fibre produced by the viscose process and gives fabrics with higher strength and better stability. Fibre of this type will be referred to as FR Modal but note that the properties of the fibre do not conform to the BISFA definition of modal fibre.
  • Proven flame retardant pigments for this kind of fibres are organic phosphorous compounds and a preferred pigment is Exolit® (2 - oxybis[5,5-dimethyl-1 ,3,2-dioxaphosphorinan]2,2'disulphide).
  • FR Modal is normally used in blend with other flame resistant fibres to produce fabrics which have a combination of the properties of the fibres in terms of strength and physical performance, aesthetics, comfort and physiological effects on the wearer.
  • FR Modal is only rarely used in 100% form in a few applications in the field of apparel such as metallised fabrics or fabrics which are mixtures of two or more yarns. On its own its performance is inadequate in a number of respects compared to other products.
  • the most recently introduced manmade cellulosic fibre is lyocell. It is produced by a solvent spinning process.
  • the solvent is an amine oxide, which is non-toxic.
  • a slurry of cellulose in a mixture of amine oxide and water is prepared. Water is removed from the slurry by evaporation and as the water content decreases, the cellulose dissolves in the amine oxide producing a solution which is a viscous liquid above 80°C.
  • the solution is extruded through spinneret holes into a water bath.
  • the solvent is diluted by the water and the cellulose precipitates to form a fibre. In the remainder of the process, the fibre is washed to remove any amine oxide solvent, cut into staple fibre, finished with a lubricant and antistat and then dried.
  • the amine oxide solvent is recycled in a closed loop in the factory. Recovery rates of greater than 99.5% are achieved. Recycling of the additive means that the effect of the process on the environment is very low. It is also essential for the economics of the process.
  • Lyocell is much stronger than viscose and is stronger than cotton in both the wet and the dry state. It is used in apparel, home furnishings, workwear and nonwovens. Over 90% of the world's lyocell production is produced by Lenzing AG and branded TENCEL®.
  • FR lyocell The superior properties of lyocell make it possible to produce a version which contains an incorporated flame retardant and which will have superior properties compared to FR viscose and FR Modal.
  • This version will be named FR lyocell for the purposes of this invention.
  • FR lyocell will be capable of producing blend fabrics with superior properties to current fabrics and will also be capable of producing 100% FR lyocell fabrics with enhanced comfort and physiological effects compared to existing fabrics.
  • FR lyocell is the subject of patent application WO 2012/083318.
  • FR lyocell as described in WO 2012/083318 is made using a flame retard ant which is a solid condensate prepared from the reactants used in the Proban process.
  • the condensate is finely ground to particles of about 1 micrometer and then mixed into the viscous liquid solution used to produce the lyocell fibre during its preparation.
  • each particle of the flame retardant is completely surrounded by cellulose. Under normal textile processing and use, it cannot be removed from the fibre because it is insoluble and entrapped within the fibre.
  • the colour needs to be stable during processing, use and care of the fabric.
  • the colour needs to be stable to washing and to exposure to light.
  • the colour fastness to washing and the colour fastness to light exposure can be measured using standard test methods such as those listed in BS ISO 105-A01 - Textiles - Tests for Colour Fastness.
  • Sulphur dyes are dyes applied by this technique using sodium sulphide solution to reduce and dissolve the dye. Sulphur dyes are used for cellulose fibres.
  • both dye types produce a fast color by impregnating fiber with a reduced soluble form that is then oxidized to an insoluble form
  • they shall jointly be called "re-oxidized dyes" for.the purposes of this invention
  • These dyes are fixed in the fibre by a reaction which creates a solid pigment particle within the structure of the cellulose in the fibre. These pigment particles are physically entrapped within the fibre and cannot be removed by laundering. Vat and sulphur dyes have good light stability. Hence cellulosic fibres, yarns or fabrics dyed with these dyes have good colour stability during laundering and exposure to light.
  • the objective of this invention is to produce a dyed FR lyocell fabric suitable for use for protective clothing and similar applications and which is washable in industrial laundries with excellent dye fastness and resistance to highly aggressive laundry conditions and a process for producing it.
  • the term "fibre” always includes staple fibres as well as - wherever applicable - continuous filaments. Therefore the dyed FR lyocell fibre according to the invention preferably is a staple fibre or a continuous filament fibre.
  • the group of dyes of the re-oxidized type contains the vat dyes and the sulphur dyes.
  • the group of acid dyes contains the pure acid dyes and the p re- metallised acid dyes.
  • the light fastness and fastness to washing the dyed FR lyocell fibre are both greater than 5 according to ISO 105.
  • the FR additive used to produce FR lyocell as described in WO 2012/083318 is an oxidised condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several amine groups.
  • the product is alkaline and contains cationic groups.
  • the FR lyocell fibres produced can be dyed and spun into yarns, or undyed fibres can be spun into yarns and subsequently dyed or furthermore undyed yarns can be made into fabric by conventional knitting or weaving processes before being dyed in fabric form.
  • the dyed FR lyocell fibre is part of a yarn.
  • the fibre can be dyed as a part of the yarn prior to production of a fabric.
  • the fibre is a continuous filament this includes the dyeing of the filament yarn by package dyeing or hank dyeing. Continuous filaments after spinning, coagulation and washing are already obtained in the form of filament bundles which are called filament yarns.
  • the dyed FR lyocell fibre is part of a fabric.
  • the fibre can be dyed as a part of the fabric.
  • the fibre, yarn or fabric should preferably be dyed with dyestuffs of the re-oxidized type, i. e. vat or sulphur.
  • dyestuffs of the re-oxidized type, i. e. vat or sulphur.
  • examples of such dyes are the Indanthren range of vat dyes and Cassulfon range of sulphur dyes from DyStar.
  • the dye molecules of these types of dye react to form insoluble pigment particles within the cellulose structure. It was found that this is unaffected by the presence of the FR additive.
  • the re-oxidized dyes are applied to the fibre, yarn or fabric in a reduced or leuco form.
  • the leuco form is created by adding alkali and reducing agent into the dyebath.
  • the original insoluble form can be reformed within the fibre structure by carrying out an oxidising treatment using hydrogen peroxide.
  • This pigment form is trapped within the fibre structure and is unaffected by the fibre additive giving fastnesses that are characteristic of these dyestuff classes.
  • FR lyocell can also be dyed with dyes normally used for colouration of nylon or wool.
  • Dyestuffs of the acid type which can be either of the simple acid or pre-metallised acid type, can successfully be applied to FR lyocell and give good fastness properties. It is believed that the cationic groups on the FR additive act as dye sites for these types of dye.
  • Acid dyeing on nylon or wool is a simple dyeing process very similar to that of direct dyeing on cellulose. No complicated fixation procedures are needed and the dyeing method is very rapid.
  • Direct dyes could be applied to the fibre of the invention, but we have seen light fastness to be adversely affected as with reactive dyes also.
  • the recommended dyes are primarily but not exclusively the re-oxidized dyes, i.e. vat and sulphur dyes and the dyes can be applied using batchwise, semi continuous and continuous application methods.
  • the process for producing the product of the invention includes the dyeing of the fibre to the desired colour by using dyeing processes of the re-oxidizedor the acid types, i. e. the types vat, sulphur, acid or pre-metallised acid.
  • the dyeing of the fibre may be done at any stage; fibre, yarn, fabric or garment.
  • the dyed FR lyocell fibre is a staple fibre dyed by stock dyeing.
  • the FR lyocell fibre may be dyed on-line during fibre production.
  • the filaments could be passed through a dye bath to pick up the dyestuff of the type vat or sulphur in the leuco form and then passed through a reaction chamber where the yarn is exposed to hydrogen peroxide which oxidises the leuco form of the dyestuff back to the insoluble form inside the structure of the fibre.
  • a similar process could be used to produce dyed staple fibre by applying the dye to a washed tow prior to cutting or to a bed of wet cut fibre after cutting and then oxidising it back to the insoluble form inside the fibre. Therefore in another preferred embodiment the dyed FR lyocell fibre is dyed by on-line dyeing during fibre production.
  • Table 1 summarises the light fastness results from a series of trials, some of which are described in more detail in the examples below.
  • the results demonstrate that whereas FR viscose (in Table 1 referred to as “Lenzing FR”) and non-FR lyocell (in Table 1 referred to as “Tencel cl.”) can be dyed to good fastness using any of the methods of dyeing normally used for cellulosic fibres, FR lyocell (in Table 1 referred to as "Lyocell FR”) was only be dyed to good fastness by using re-oxidizing dyeing, i. e. sulphur dyeing or vat dyeing.
  • re-oxidizing dyeing i. e. sulphur dyeing or vat dyeing.
  • a product of this invention is a fabric made entirely of FR lyocell or containing a proportion of FR lyocell which is of a colour suitable for the intended application and has light and washing fastness properties which are suitable for the application.
  • the fabric of the invention may be woven, knitted or nonwoven. Any available process may be used to make the nonwoven fabric including air laying, wet laying, spun laying, needling of a carded or air laid web, hydroentanglement or any other method of producing a nonwoven fabric.
  • Spun or continuous filament yarns made in whole or in part from FR lyocell or any other fibre type may be included in a nonwoven or may form a significant part of it.
  • the FR lyocell fibres can be used to produce a nonwoven fabric from the undyed fibre and then the fabric can be dyed.
  • the FR lyocell fibres can also be dyed and then used to produce a nonwoven fabric.
  • a further object of the invention is a dyed FR lyocell fibre which is part of a nonwoven fabric, wherein the fabric is a nonwoven fabric produced by air-laying, carding and needling, hydroentangling, spun laying or any other nonwoven fabric manufacturing method.
  • the FR lyocell fibre may be blended with other FR fibres such as meta- aramid, para-aramid, modacrylic, PBI and any other FR fibre and may be blended with other non-FR fibres including cotton, wool, silk, linen, lyocell, modal, viscose, nylon, acrylic or polyester.
  • FR fibres such as meta- aramid, para-aramid, modacrylic, PBI and any other FR fibre and may be blended with other non-FR fibres including cotton, wool, silk, linen, lyocell, modal, viscose, nylon, acrylic or polyester.
  • a further object of the invention is a dyed FR lyocell fibre which is part of a yarn and wherein the yarn contains, besides the dyed FR lyocell fibre, one or more other fibre types taken from the group containing meta- aramid, para-aramid, modacrylic, PBI, nylon, wool, cotton, silk, linen, FR modal, FR viscose, non-FR lyocell, modal and viscose.
  • a further object of the invention is a dyed FR lyocell fibre which is part of a fabric and wherein the fabric contains, besides the dyed FR lyocell fibre, one or more other fibre types taken from the group containing meta- aramid, para-aramid, modacrylic, PBI, nylon, wool, cotton, silk, linen, FR modal, FR viscose, non-FR lyocell, modal and viscose.
  • a further object of the invention is the use of the fibre as described above for the manufacture of a yam. Therein the dyeing of the fibre according to the invention can be done in the fibre stage as well as in the yarn stage.
  • Yet a further object of the invention is the use of the fibre as described above for the manufacture of a fabric.
  • the dyeing of the fibre according to the invention can be done in the fibre stage as well as in the yarn stage or in the fabric stage.
  • Garments made from the fabric are also products of the invention.
  • the product of the invention may be used for the production of all types of garments worn where accidental exposure to flames is a possibility. It can be used for jackets, coats, trousers, boilersuits, coveralls, shirts, sweaters and jumpers, sweatshirts, T-shirts, children's nightwear, adults nightwear, socks, aprons, gloves and gauntlets, hoods for head protection other headwear and any other garment that may be worn when accidental exposure to flame or other source of ignition is a possibility.
  • articles made from the fabric are also products of the invention. They include articles which may be accidentally exposed to flame or other source of ignition such as shoe and boot components, welding screens, fire curtains, tents, upholstery, home furnishings including curtains, sleeping bags, tarpaulins and any other similar articles made in whole or in part from fabric. They also include articles made from nonwoven fabric including filters, interlinings, coating substrates, wipes, cleaning cloths, disposable or short-life clothing, padding and barrier layers for upholstered furniture and other applications where there is a risk of ignition from accidental exposure to flame or other source of ignition.
  • a further object of the invention is the use of the fibre as described above for the manufacture of a textile article including garments worn where accidental exposure to flames or other sources of ignition is a possibility such as jackets, coats, trousers, boiler suits, coveralls, shirts, sweaters and jumpers, sweatshirts, T-shirts, children's nightwear, adults nightwear, socks, aprons, gloves and gauntlets, hoods for head protection, other headwear and any other garment that may be worn when accidental exposure to flame or other source of ignition is a possibility and other articles made from the fabric which may be accidentally exposed to flame or other source of ignition including shoe and boot components, welding screens, fire curtains, tents, upholstery, home furnishings including curtains, sleeping bags, tarpaulins, filters, interlinings, coating substrates, wipes, cleaning cloths, disposable or short-life clothing, padding and barrier layers for upholstered furniture and any other similar articles made in whole or in part from fabric.
  • the dyeing according to the invention is possible in any previous stage as well as in the garment stage.
  • Another object of the invention is a textile article made using the fibre as described above including garments worn where accidental exposure to flames or other sources of ignition is a possibility such as jackets, coats, trousers, boiler suits, coveralls, shirts, sweaters and jumpers, sweatshirts, T- shirts, children's nightwear, adults nightwear, socks, aprons, gloves and gauntlets, hoods for head protection, other headwear and any other garment that may be worn when accidental exposure to flame or other source of ignition is a possibility and other articles made from the fabric which may be accidentally exposed to flame or other source of ignition including shoe and boot components, welding screens, fire curtains, tents, upholstery, home furnishings including curtains, sleeping bags, tarpaulins, filters, interlinings, coating substrates, wipes, cleaning cloths, disposable or short-life clothing, padding and barrier layers for upholstered furniture and any other similar articles made in whole or in part from fabric.
  • garments worn where accidental exposure to flames or other sources of ignition is a possibility such as jackets, coats, trousers,
  • the colour fastness to washing and the colour fastness to light exposure are measured. This is done using standard test methods such as those listed in BS ISO 105-A01 - Textiles - Tests for Colour Fastness.
  • the principle of these tests is that a sample of fabric is washed using a standard washing process or exposed to light as described in the standard. The treated fabric is then compared to an untreated sample of fabric and the difference in colour is compared using a grey scale. The higher the number (maximum is 7) assigned to the colour fastness the better it is.
  • a low figure would indicate a fabric with poor colour fastness which undergoes a significant change in colour when washed.
  • a high figure would indicate that the change in colour on washing is very small or even no change at all.
  • the maximum colour fastness which can be assessed is 7.
  • Ne yarn made from FR lyocell fibres manufactured as described in Patent Application WO 2012/083318 was wound onto dyer's packages with a density of 350g/l or 25 Shore density.
  • the yarn was dyed with a vat dye using a procedure as
  • a dye bath was prepared consisting of the following ingredients in water: 4% Indanthren Dark Blue DB, 2g/l Setamol WS (Protective colloid and dispersing agent from BASF), 0.3g/l Albigen A (levelling agent from BASF), 4ml/l NaOH (50%), 5g/l Sodium Hydrosulphite, 20g/l Glaubers Salt.
  • the yarn packages were dyed at 60°C for 75 minutes. After dyeing the yarn was washed and oxidized as follows: The yarn packages were washed in the dyeing machine with cold water. The yarn was then oxidised using a bath consisting of the following ingredients: 3ml/l Hydrogen Peroxide (30%), 2m l/l Acetic Acid (80%),
  • the yarn was oxidised in the dyeing machines for 30 minutes at 60°C.
  • the yarn packages in the dyeing machine were then rinsed with hot water and then with cold water and then soaped off with a bath consisting of: 2g/l Kieralon JET (wetting agent / detergent from BASF), 2g/l Soda Ash.
  • the soaping off was done for 30 minutes at 95°C.
  • the yarn packages were then rinsed with hot water and then with cold water.
  • the yarn packages were then unloaded from the dyeing machine and dried by carousel drying in a conventional manner.
  • the resultant yarns were then re-wound from the dyers packages onto weavers cones before weaving into a 2x1 twill fabric of 200gsm weight.
  • the fabric was assessed for colour fastness to washing and to light.
  • the resultant fabric gave excellent fastness to washing and light.
  • the light fastness according to ISO 105-B02 - Colour Fastness to Artificial Light - was 7.
  • Wash fastness according to ISO 105-C06 - Colour Fastness to Domestic and Commercial Laundering was 4-5, change of shade and staining of adjacent cloths.
  • a woven 2/1 twill fabric (200gm-2) made from the same undyed yarns from example 1 was prepared in open width by scouring with a non-ionic detergent and sodium carbonate at 90°C, then dried on a stenter.
  • the fabric was then dyed using Indanthren vat dyes in a fully continuous pad, dry, pad steam process as recommended by DyStar:
  • the fabric was skied (left open to the air) for 20 seconds before predrying in an infrared drier to 25-40% residual moisture, before completing the drying process in a hot flue at 120°C for 45-100 seconds.
  • the fabric was then padded at 80% wet pick up with a bath consisting of the following ingredients in water: 2g/l Serasperse C-SN (dispersing agent from DyStar), 2g/l Serasperse Ml-S (dispersing agent from DyStar), 100g/l NaOH (38°Be), 50g/l Sodium Hydrogen sulphite.
  • the fabric was then steamed for 60 seconds at 102°C in a tight strand steamer before being continuously washed in an eight box system.
  • the undyed woven fabric from example 2 above was dyed using Cassulfon Carbon CMR, a sulphur dye from DyStar on a jet dyeing machine.
  • the fabric was loaded into the jet dyeing machine with the machine manufacturer's recommended amount of water at 40°C.
  • the following chemicals were added: 14% Cassulfon Carbon CMR liquid, 16.5% Sulfhydrate F 150
  • the dyeing bath temperature was increased to 95°C over 20 minutes and then 20g/l common salt was added. The dyeing was continued for 45 minutes before cooling the bath to 70°C. The liquid was then dropped to drain.
  • the fabric was then washed off in the jet dyeing machine as follows: The fabric was rinsed with warm water at 40°C and then rinsed with cold water. 1% Hydrogen Peroxide (35%) and 1 % Soda Ash were added to the water in the machine and circulated with the fabric for10 minutes at 40°C. The fabric was rinsed with warm water at 40°C and then rinsed with cold water. The fabric was then stenter dried.
  • the black fabric was assessed for colour fastness to washing and to light.
  • the resultant fabric gave excellent fastness to washing and light.
  • the light fastness according to ISO 105-B02 was 6.
  • Wash fastness according to ISO 105-C06 was 4-5, change of shade and staining of adjacent cloths.
  • the undyed fabric produced in example 2 was dyed using a p re-metallised dye as follows: The fabric was loaded into a jet dyeing machine, filled with water to the normal dyeing level giving a normal 10:1 liquor to goods ratio. The temperature was raised to 40°C and the following additions made: 2% Isolan Blue S-RL (pre-metallised acid dye from DyStar), 2g/l Glauber's salt, 1 g/l Biavin TCC (lubricant from CHT). The pH was adjusted to 6.5 using acetic acid (80%). The dye bath temperature was increased to 95°C at 2°C / minute and dyeing continued for 60 minutes. The fabric was then washed with water at 40°C and then washed with cold water until the washings were clear of unfixed dyestuff. The fabric was dyed to a dark navy shade of good wash and light fastness.
  • a sample of standard lyocell (i. e. without FR pigment additive) included in the same dyebath at the same time was only stained a pale blue at the end of the dyeing process.
  • the undyed fabric from example 2 was dyed with a reactive dye to
  • the temperature of the dyeing bath was raised at 2°C/minute to 80°C and dyeing continued for 30 minutes. 20g/l Soda ash was then added in two equal portions over 20 minutes and dyeing continued for 60 minutes. After which time the bath was cooled to 60 °C and the exhausted dyebath dropped to drain.
  • the hydrolysed dye and chemicals were then washed clear of the fabric by repeated washing as follows: Wash hot and cold. Neutralise with 1g/l Acetic acid (60%). 10 minutes at 40°C. Wash off at 95°C for 20 minutes in 1g/l Kieralon JET. Complete washing by rinsing hot (60°C) and cold. The fabric was then stenter dried. The blue fabric was assessed for colour fastness to light and washing. The resultant fabric gave poor fastness to washing. The light fastness according to ISO 105-B02 was 3.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
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Abstract

L'invention concerne des fibres Lyocell rendues ignifuges par incorporation de pigments ignifuges et colorées à l'aide de colorants assurant une lumière et une solidité au lavage satisfaisantes.
PCT/AT2013/000192 2012-12-27 2013-11-19 Lyocell ignifuge colorée pour assurer une lumière et une solidité au lavage satisfaisantes Ceased WO2014100841A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1344/2012 2012-12-27
ATA1344/2012A AT513763B1 (de) 2012-12-27 2012-12-27 Flammhemmender Lyocell-Gegenstand, der gefärbt ist, um gute Licht- und Waschechtheit zu bieten

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WO2014100841A2 true WO2014100841A2 (fr) 2014-07-03
WO2014100841A3 WO2014100841A3 (fr) 2014-09-12

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TW (1) TW201441437A (fr)
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Cited By (4)

* Cited by examiner, † Cited by third party
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US11058228B2 (en) * 2013-11-27 2021-07-13 Dreamwell, Ltd. Fire resistant panel including vertically oriented fire retardant treated fibers and an adaptive covering material
US12091781B2 (en) 2017-10-06 2024-09-17 Lenzing Aktiengesellschaft Silk-like woven garment containing or consisting of lyocell filaments
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US11058228B2 (en) * 2013-11-27 2021-07-13 Dreamwell, Ltd. Fire resistant panel including vertically oriented fire retardant treated fibers and an adaptive covering material
US12091781B2 (en) 2017-10-06 2024-09-17 Lenzing Aktiengesellschaft Silk-like woven garment containing or consisting of lyocell filaments
CN112538768A (zh) * 2020-12-08 2021-03-23 绵阳佳联印染有限责任公司 一种工业高耐洗面料的制作工艺
CN119593076A (zh) * 2024-12-04 2025-03-11 南京金羚生物基纤维有限公司 一种植物靛蓝Lyocell纤维的生产方法

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AT513763B1 (de) 2016-06-15

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