EP1442170A1 - Procede pour munir des fibres de cellulose d'une protection ignifuge - Google Patents

Procede pour munir des fibres de cellulose d'une protection ignifuge

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Publication number
EP1442170A1
EP1442170A1 EP02764886A EP02764886A EP1442170A1 EP 1442170 A1 EP1442170 A1 EP 1442170A1 EP 02764886 A EP02764886 A EP 02764886A EP 02764886 A EP02764886 A EP 02764886A EP 1442170 A1 EP1442170 A1 EP 1442170A1
Authority
EP
European Patent Office
Prior art keywords
cellulose
cyanuric chloride
cellulose fiber
chloride derivatives
cellulose fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02764886A
Other languages
German (de)
English (en)
Inventor
Manfred Schmidt
Stephanie Schauhoff
Frank GÄHR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Degussa GmbH filed Critical Degussa GmbH
Publication of EP1442170A1 publication Critical patent/EP1442170A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/35—Heterocyclic compounds
    • D06M13/355—Heterocyclic compounds having six-membered heterocyclic rings
    • D06M13/358—Triazines
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
    • D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/35—Heterocyclic compounds
    • D06M13/355—Heterocyclic compounds having six-membered heterocyclic rings
    • D06M13/358—Triazines
    • D06M13/364—Cyanuric acid; Isocyanuric acid; Derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/44—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen containing nitrogen and phosphorus
    • D06M13/447—Phosphonates or phosphinates containing nitrogen atoms
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02—Natural fibres, other than mineral fibres
    • D06M2101/04—Vegetal fibres
    • D06M2101/06—Vegetal fibres cellulosic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/30—Flame or heat resistance, fire retardancy properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2631—Coating or impregnation provides heat or fire protection

Definitions

  • the invention relates to a method for the flame retardant treatment of cellulose fibers and articles containing them (cellulose fiber materials).
  • the process comprises treating the cellulose fiber or the articles containing it with a cyanuric chloride derivative in the aqueous phase.
  • the invention is also directed to cellulose fibers which have been given a flame-resistant finish according to the invention and articles containing them and their specific uses. The use of a special stain according to the invention is also mentioned.
  • Non-washable flame retardants are primarily based on inorganic salts such as ammonium hydrogen phosphate, ammonium sulfate, borax and boric acid, which may also be combined with organic nitrogen bases. A distinction can be made between permanent flame retardants
  • Equipment according to (II) mainly uses phosphorus and phosphorus-nitrogen flame retardants, which are either applied to the fiber as a noun or applied as a monomer or precondensate and cured on the fiber in the form of a polymer.
  • precondensates made of tetrakishydroxymethylphosphonium chloride and urea are applied to the fiber, followed by treatment with ammonia and then with hydrogen peroxide - see Melliand Textile Reports 3/1990, 219-224.
  • This and similar processes are technically complex and also lead to a product with a relatively stiff handle. Good flame retardancy can also be achieved with cotton using dialkylphosphonocarboxamides and melamine resins, but this leads to a relatively high loss of frictional resistance.
  • Flame retardants are carried out at around 140 ° C for several minutes in a stenter in the textile finishing company. Under these conditions there are high emissions of compounds with toxic potential, such as formaldehyde or organophosphorus compounds. It is estimated that more than half of the dialkylphosphonocarboxamide is not fixed to the cellulosic fiber material and is discharged into the wastewater during a subsequent washing process. It is to be expected that the development currently underway in accordance with validated analysis methods for the determination of flame retardants and fission products in exhaust air and waste water will lead to serious cuts and restrictive measures on the part of the legislator with regard to the application of the known flame retardants. DE10038100.6 describes a process using special cyanuric chloride derivatives.
  • a disadvantage of this process is that the cyanuric chloride derivatives described there can only be poorly applied to the fiber in aqueous solutions, so that they are not particularly suitable for the application of the flame retardant compound by means of a padder as part of a continuous procedure, which is customary in textile operation.
  • the object of the present invention is therefore to demonstrate a process for flame retardant equipment using cyanuric chloride derivatives which does not have the disadvantages of the previously known processes, in particular the equipment is intended to sustainably reduce the emissions of toxic compounds when applied under economically and ecologically acceptable conditions enable.
  • the method should be able to be carried out in the simplest possible way with the existing and customary equipment of a pulp or textile company, in particular high costs for an ammonia vaporization system are to be avoided.
  • the method should also make it possible to obtain flame retardant or self-extinguishing cellulose fibers or articles containing them which have an LOI value (limiting oxygen index according to ASTM 02863-77) of 24 or 27 and higher, without the Significant influence on tensile strength.
  • LOI value limiting oxygen index according to ASTM 02863-77
  • Claim 1 relates to a method for permanent flame retardant equipment. Preferred embodiments are protected in the dependent claims dependent on claim 1. Claims 9 to 11 relate to cellulose treated in this way. Claim 12 protects the use of a stain according to the invention, whereas claim 13 covers the uses of the finished cellulose fibers.
  • the swelling of the cellulose fiber material according to a) makes it possible to obtain much higher degrees of substitution in the reaction of the cellulose with the cyanuric chloride derivatives added under c) than is possible without prior swelling in alkali.
  • a large part of the alkali can be washed out with water before the substitution reaction, without this being accompanied by a serious drop in the degrees of substitution to be achieved, provided the water-soluble cyanuric chloride derivatives are used according to the invention.
  • the swelling liquor is extracted from fe a) more than 80% washed out after stage b).
  • Protic solvents, in particular water are suitable as washing liquid.
  • lye is understood to mean, in particular, so-called mercerizing lye, which is used for mercerization in many textile companies and which generally represents an approximately 20% sodium hydroxide solution.
  • cyanuric chloride derivatives which can be used according to the invention depends not only on the good solubility in water but also on the fact that as much nitrogen atoms and possibly phosphorus atoms as possible can be firmly applied to the cellulose fiber material by means of molecules of small molar mass.
  • NHDT mono-hydroxydichlorotriazine
  • the method in question can be applied to all cellulose fibers, yarns, nonwovens or flat articles containing them to the person skilled in the art for this purpose.
  • the cellulose fibers to be modified according to the invention are advantageously cotton or viscose fibers.
  • Wood pulps or cotton linters are used, in particular cellulose regenerated fibers or lyocell fibers can be modified in this way.
  • Other starting products for the modification reaction according to the invention are fiber flakes or yarns which contain cellulose.
  • the amount of cyanuric chloride derivative to be used based on the amount of cellulose per finishing step can be chosen by the person skilled in the art. He will orientate himself on the best possible flame equipment with the lowest possible application rate, since this is the most economical procedure.
  • the cyanuric chloride derivatives are preferably used in an amount based on the cellulose of 3 to 200% by weight, in particular 6 to 50% by weight and more preferably 8 to 33% by weight.
  • the amount should preferably be sufficient so that, in an economically sensible period of time, cyanuric chloride derivative in an amount corresponding to a later nitrogen content of at least 1.0% by weight, in particular 1.5 to 12% by weight, more preferably 2 to 8% by weight. % based on the finished cellulose on which fiber is present.
  • This finishing process claimed according to the invention is generally followed by further processing and finishing processes, in particular the implementation of the modified cellulose fiber material to be obtained, for example, according to procedure a) to c) with phosphorus-containing compounds, in order to achieve good flame retardant effects reach.
  • the quality of the flame retardant equipment depends on the one hand on the flame retardant components, and on the other hand on the amount used in relation to the fiber weight. Nitrogen-containing compounds and phosphorus-containing compounds have a flame-retardant effect. The simultaneous presence of nitrogen and phosphorus has a particularly advantageous effect on increasing the LOI (synergism).
  • the LOI value is a measure of the quality of the flame retardant equipment (according to ASTM D2 '863-77).
  • the LOI shows the limit value of the volume fraction of oxygen in an oxygen / nitrogen gas mixture, in which a textile fabric just burns from top to bottom.
  • the cyanuric chloride derivatives used according to the invention for flame retardant equipment make it possible to adjust the nitrogen content of the cellulose treated with the cyanuric chloride derivative to values which, when suitable phosphorus-containing compounds are added, meet the requirements
  • Modified cellulose fiber obtained according to procedure a) to c) or articles containing it is treated before or after the equipment according to the invention or simultaneously with this with a phosphorus-containing flame retardant, the phosphorus-containing flame retardant in the form of a polycondensate being able to coat the cellulose fiber material or preferably reactively reacts with the cellulose fiber material.
  • the phosphorus-containing compound is expediently used — alternatively, of course, several different phosphorus-containing compounds can be used — in such an amount that the finished cellulose fiber material has a phosphorus content of at least 0.6% by weight, preferably at least 1% by weight.
  • the ammonium salt of an alkyl phosphorous acid, preferably dimethyl phosphate can serve as the phosphorus-containing compound. This salt is easily accessible from dimethylphosphite and ammonia and is therefore, which is particularly advantageous, very inexpensive.
  • the modified cellulose fibers obtained, for example, according to a) to c), or articles containing them, can be impregnated with the phosphorus-containing compounds by means of a pad and these can then optionally be fixed by dry heat.
  • e.g. Cellulose fiber material modified by processes a) to c) is impregnated with a solution containing the phosphorus-containing agent, and fixed by dry heat, for example in a tenter, by means of padding.
  • the LOI values can be further increased by fixing the phosphorus-containing compound compared to the cellulose fiber material modified simply according to the invention.
  • known flame retardants from the series of dialkylphosphonocarboxamides it is also possible to use known flame retardants from the series of dialkylphosphonocarboxamides,
  • the invention also deals with cellulose fibers or articles containing them, produced by the method according to the invention.
  • the cellulose fiber or articles containing it preferably have a nitrogen content of 1.0% by weight, in particular 1.5 to 12% by weight, more preferably 2 to 8% by weight.
  • the LOI of e.g. Cellulose fiber material, in particular woven fabric, obtained according to procedure a) to c) depends on the type of cyanuric chloride derivative used in step c) and on the degree of substitution which arises depending on the course of the reaction, in particular the resulting nitrogen content, which can be determined by elemental analysis.
  • the treatment according to the invention can be carried out at room temperature or at elevated temperature, preferably above 100 ° C.
  • the usual treatment tents at room temperature are between 30 minutes and 24 hours, for fibers preferably between 30 minutes and 1
  • the treatment times are between 1 minute and 10 minutes, in any case less than 20 minutes.
  • the treatment can also be carried out in a saturated steam atmosphere at approximately> 100 ° C., preferably> 101 ° C., very preferably at 102 ° C. or a hot steam atmosphere at approximately 125 ° C., preferably at 127 ° C. and very preferably at 130 ° C. - which are carried out using the same times as for hot air treatment.
  • the nitrogen content of the modified cellulose fiber material obtained, for example, according to procedure a) to c) mainly results from the heterocyclically bound nitrogen of the triazine ring, since the nitrogen content is very low for an unmodified cellulose fiber material (0.0 to 0.2%).
  • nitrogen contents of 0.5 to> 10% by weight can be obtained, depending on the substrate and the reaction procedure.
  • Normal nitrogen values for a modified cellulose fiber material range between 1.0 and 2.0% by weight, which results in LOI values of 19 and 22, respectively.
  • an unmodified cotton fabric has an LOI of 16 to 17. According to the invention, LOI values of> 25 can be obtained.
  • a next invention relates to the use of a stain containing cyanuric chloride derivatives with a water solubility of> 3 g / 100 ml (20 ° C.) or having the cyanuric chloride derivatives indicated above for the permanent flame retardant treatment of cellulose fibers.
  • the cellulose fiber material thus finished is preferably used for the production of protective clothing, children's clothing, curtains, car interiors, carpets or upholstery.
  • the cellulose fibers obtained by the process according to the invention and articles containing them, such as yarns, fleeces and flat articles, are characterized in that they contain S-triazine compounds bonded to glucose units of the cellulose via ether bridges.
  • the cyanuric chloride to be used can be contacted with the cellulose fiber material in the presence or absence of customary textile auxiliaries, in particular surface-active compounds (surfactants), dispersants, mercerizing auxiliaries and sequestering agents.
  • surface-active compounds surfactants
  • dispersants dispersants
  • mercerizing auxiliaries mercerizing auxiliaries
  • sequestering agents for modification of the cellulose fiber e.g. according to processes a) to c
  • non-reactively bound cyanuric chloride derivative and excess alkali are washed out with water, preferably boiling water.
  • modified fabrics to be obtained by the process claimed in accordance with the invention can be discontinuously in the tree according to the processes customary in the text industry, in broad or strand treatment (eg in a jigger or jet), or continuously refined using the pad batch, pad steam, pad cure and / or pad dry process (Bela von Falkai: "Synthesefaser” Verlag Chemie , 1981, pp. 283-289).
  • modified cellulose materials do not differ significantly in their dyeing properties, in particular as regards dyeing with substantive and reactive dyes, in comparison with the unmodified starting fabric. This applies in particular to the color depths to be achieved, the speed at which the dyes are drawn up and the level of coloration.
  • flame-retardant cellulose fiber materials with other fibers such as polyester, polyamide, polyacrylonitrile and aramid fibers
  • other fibers such as polyester, polyamide, polyacrylonitrile and aramid fibers
  • the method claimed according to the invention has significant advantages over the prior art acknowledged at the outset.
  • the finishing stages can be carried out easily in the textile industry as part of a continuous operation or in the pulp industry in a batch reactor.
  • the toxicological disadvantages of the flame retardant treatment processes established on the market do not arise. Pollution of the exhaust air and wastewater through ecologically questionable emissions are largely avoided.
  • the cyanuric chloride derivatives to be used are easily accessible, and at the same time they have a low nitrogen content and a high nitrogen content, which is necessary for a flame retardant effect.
  • the method can be used for many cellulosic substrates.
  • the flame retardancy can be easily adjusted depending on the amount used, and a combination with phosphorus-containing flame retardant compounds is also possible, with phosphorus and nitrogen can also be combined with one another in the same average.
  • a LOI value of over 24 is easily available.
  • Another advantage is that the tear strength is only minimally reduced and at the same time the crease resistance increases.
  • the coloring properties are only slightly influenced by the modification.
  • flame retardant is understood to mean that the finished cellulose fiber and an article containing it are less easily combustible and / or extinguish themselves more quickly after removal of the ignition source than is the case with the non-finished fiber or the article containing it ,
  • aqueous-alkaline is understood to mean in particular an aqueous medium which may have other water-soluble organic solvents and which has a pH of> 7, preferably> 8, particularly preferably> 9 and very particularly preferably> 10.
  • a strip of cotton fabric (16 g, desized, bleached, 191 g / m2) is swollen in 500 ml of sodium hydroxide solution (250 g / 1) at room temperature for 3 min. Then it is squeezed to a residual moisture of 80%.
  • the strip is treated in a foulard with a 10% aqueous solution of mono-hydroxydichlorotriazine (NHDT) (moisture absorption 44%), wrapped on a round metal body, sealed airtight with a polyethylene film and over 24 hours, at room temperature and lighter Rotation of the metal body, leave.
  • NHDT mono-hydroxydichlorotriazine
  • the process thus corresponds to the semi-continuous Klotz-Kaitverweil process known in the textile industry (Lit: Bela von Falkai: “Synthesefaser” Verlag Chemie, 1981, p.288).
  • the cyanuric chloride derivative is fixed on the cellulose material. It is then unwound and unfixed NHDT and hydrolysis products are washed out with boiling water in a 5 liter beaker.
  • a 1.95% nitrogen content of the modified fabric is obtained; the LOI of the fabric is 20.6.
  • the untreated cotton fabric has a LOI of 17.
  • a strip of cotton fabric (16 g, desized, bleached, 191 g / m 2) is treated in 500 ml of a dilute sodium hydroxide solution (25 g / 1) at room temperature for 3 min. An imperceptible swelling occurs. The procedure is then as in Example 1. The nitrogen content is found to be 0.51%.
  • the LOI of the fabric modified according to Example 2 is 18.3.
  • sodium lye 250 g / 1 is applied to a web (50 cm wide, 20 m long) made of cotton fabric (desized, bleached, 191 g / m2) using a double-padder and 2 minutes under controlled width tension mercerized.
  • the lye is washed out, also under tension of the fabric, whereby the residual alkali content based on caustic soda is determined titrimetrically to 11% based on the amount of caustic soda applied.
  • the fabric material is pressed between 2 metal rollers (residual moisture approx. 75%) and treated immediately and continuously with a 10% aqueous solution of NHDT in the wet state using a padder, an additional moisture absorption of 51% being determined.
  • the fabric web is wound up and welded into a film analogously to Example 1, placed on a winding former and left at room temperature for 24 hours. Then it is washed with boiling water and dried.
  • the nitrogen content of the modified tissue is found to be 1.78% by elemental analysis.
  • 3 modified fabric is 20.2.
  • Example 3 The procedure is analogous to Example 3, but the fabric is passed directly and continuously through a stenter after the foulard treatment with aqueous NHDT solution in order to fix the NHDT under hot air. Treatment parameters in the stenter: 150 ° C, 2 minutes. The fabric is washed and dried analogously to Examples 1 and 2.
  • the nitrogen content of the modified tissue is determined by elemental analysis at 1.65%.
  • the LOI of the fabric modified according to Example 2 is 20.0.
  • Example 5 The cotton fabrics finished according to Examples 1, 3 and 4 are subjected to a reactive dyeing with CI Reactive Black 5 using the exhaust process.
  • Dye concentration 5% Glauber salt: 50g / l dyeing temperature: 70 ° C Heating rate 1.5 ° C lkalizusatz A: 30 min after reaching the dyeing temperature:
  • Ta b elle 1 K / S values for reactive dyeing with CI Reactive Black 5 on vessel equipped fabric according to Examples 1 to 3 in the V COMPARISON to non-vessel equipped cotton fabric
  • a pH of 3.5 is set by dropwise addition of phosphoric acid.
  • This solution is brought onto a cotton fabric finished according to Example 3 by means of a padder and excess solution is squeezed off using two metal rollers (moisture application: 92%).
  • the fabric material is pre-dried briefly (approx. 1 to max. 2 min) at 70 ° C, cut into 3 parts and treated in a drying oven, the treatment temperature being varied.
  • the parameter setting as well as the LOI value resulting after washing out the tissues are shown in Table 2.
  • Table 2 LOI values of cotton fabric equipped according to the process and after fixing ammonium monomethyl phosphite (variable fixing conditions)
  • a vehicle equipped according to Example 3 of cotton fabric (8 g) is treated with a mixture of 60 g of a Dialkylphosphonocarbon- klareamidates (commercial product Aflammit ® KWB, Thor Chemie), 3.5 g phosphoric acid and 40 ml of water soaked.
  • the fabric strip is squeezed to a residual moisture of 80% and dried at 100 ° C. in a laboratory dryer for 1 minute.
  • the fabric strip is rinsed with alkaline heat and then rinsed cold several times.
  • a phosphorus content of 3.3% and an LOI of 31.7 are achieved.
  • the wash resistance is as good as at a previously unfinished fabric in which the equipment fleet contains a crosslinker.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Fireproofing Substances (AREA)

Abstract

L'invention concerne un procédé permettant de munir des fibres de cellulose ou des articles en contenant, d'une protection ignifuge permanente. Il est prévu d'utiliser à cet effet notamment des dérivés de chlorure cyanurique, qui présentent une solubilité dans l'eau particulière. L'invention concerne en outre des fibres de cellulose traitées de la sorte et un corrosif selon l'invention.
EP02764886A 2001-11-09 2002-09-20 Procede pour munir des fibres de cellulose d'une protection ignifuge Withdrawn EP1442170A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2001155066 DE10155066A1 (de) 2001-11-09 2001-11-09 Verfahren zur Flammschutzausrüstung von Cellulosefasern
DE10155066 2001-11-09
PCT/EP2002/010567 WO2003040460A1 (fr) 2001-11-09 2002-09-20 Procede pour munir des fibres de cellulose d'une protection ignifuge

Publications (1)

Publication Number Publication Date
EP1442170A1 true EP1442170A1 (fr) 2004-08-04

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EP02764886A Withdrawn EP1442170A1 (fr) 2001-11-09 2002-09-20 Procede pour munir des fibres de cellulose d'une protection ignifuge

Country Status (5)

Country Link
US (1) US8177859B2 (fr)
EP (1) EP1442170A1 (fr)
JP (1) JP4495457B2 (fr)
DE (1) DE10155066A1 (fr)
WO (1) WO2003040460A1 (fr)

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JP4495457B2 (ja) 2010-07-07
DE10155066A1 (de) 2003-05-28
US8177859B2 (en) 2012-05-15
US20050011015A1 (en) 2005-01-20
WO2003040460A1 (fr) 2003-05-15
JP2005508458A (ja) 2005-03-31

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