auxiliaries chemicals required in dyeing and finishing

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  • Name : MAZADUL HASAN SHESHIRID: 2010000400008Batch: 13th Batch (Session 2009-2013)Department: Wet Processing Technology Email: [email protected]: www. Textilelab.blogspot.com Southeast UniversityDepartment of Textile EngineeringPREPARED BY right

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Introduction:Most of the operations in the textile processing such as scouring, bleaching, dyeing and printing are carried out by use of basic chemicals like acid, alkalis oxidizing, reducing agents dyestuffs etc.Besides this other chemical are also used in relatively small quantity proportion to increase the efficiency of above process. These substances are called Textile Auxiliaries.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **What Does Auxiliary Mean in Textiles? It is defined as a chemical or a formulated chemical product which enables a processing operation. The various processing operations may be in the functions of preparation, dyeing, printing or finishing. Auxiliaries help by speeding up these processes or carry out the processes in a more efficient manner. This is necessary to obtain the desired effect.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Carrier or Swelling agent,Levelling agent, Antifoaming agents, Dispersing agents, Detergents and Wetting agents etc.Same example of auxilaries

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Objectives:To know about the different types of Auxiliaries and their function.To know the dyeing and finishing auxiliaries.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Primary functions of auxiliaries To prepare or improve the substrate for coloration To modify the sorption characteristics of colorants To stabilize the application medium To protect or modify the substrate To improve the fastness of dyeingTo enhance the properties of laundering formulations (fluorescent brightening agents).

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Soda ash Hydrogen PeroxideSome Auxiliaries

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Caustic Soda ( Flakes)Some AuxiliariesAcetic Acid

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Hydrochloric AcidSome Auxiliaries

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Classification of Dyeing Auxiliaries Sequestrant..pH Control and buffer systemLubricants / Anticreasant..Acetic acidDesizing AgentWetting AgentsDye fixing agentSoftener Levelling Agent.Mercerising agentAntifoaming agent.EnzymeBleaching agentSoaping Agent Optical Brightener.Peroxide Killer.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Auxiliaries and its functionUsed to remove hardness and metal ion present in dyeing liquor. Hardness of dyeing liquor can occurred due to hardness of fabric after pretreatment which is 35 ppm and also from salt which is 70 ppmSequestering AgentPOLIAC 194 FE,POLIAC 195,POLIAC BIOExample of Sequestering agent

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Desizing AgentDesizing is the process of removing the size material from the warp yarn in woven fabrics.

    Example of Desizing AgentDISAPPRETTANTE SG,DISAPPRETTANTE HT etc.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Bleaching agentHydrogen peroxide is used for bleaching of cotton fabric and remove natural color.Bleaching removes contamination from finished cotton. Full range of bleaching agents like peroxide bleaching agent.

    H2O2Bleaching agent

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Peroxide Killer.Peroxide Killer.It is used in the removal of residual hydrogen peroxide used in bleaching of textiles before dyeing. SYNTHOKILL-P Example of PKBasopal FB PK,SYNTHOKILL-P

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **pH Control and buffer systemMany disperse dyes required controlled 4.5-5 and practically all disperse dyes give good results in this pH range and are much more sensitive to minor changes in pH. A buffered system is necessary for precise control of pH. PH RegulatorsEulysin PC

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Levelling Agent.Levelling Agent use for cotton fabric

    Trade NameForm lonic*ApplicationABLUTEX RLLiquidALevelling agent of direct and reactive dyes, clear and deep color.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Levelling Agent.Levelling Agent use for polyester fabric.

    Trade NameForm lonic*ApplicationABLUTEX RT430LiquidA/NDispersing and levelling agent for high-temperature jet dyeing

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Levelling AgentLevelling Agent use for Nylon

    Trade NameForm lonic*Application

    ABLUTEX LNLiquidNLevelling agent for dyeing nylon fibers with acid dyes.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Wetting AgentTo reduce surface tension of water thus ensures easy penetrating of chemicals and dye to the fabric.BIPON BOD anionic Yellowish liquid Wetting / Detergent is used for preparation of cotton and blends. BIODEGRADABLEWetting Agent

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Mercerising agentMercerizing is a process used to increase the luster of cotton. Mercerizing is a process used to increase the luster of cotton. Mercerizing is a process used to increase the luster of cotton. Mercerized cotton is often used in cotton crafts and yarns. NaOHExample of mercerising agent

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Soaping Agent Functions of soaping agent Disperse the unfixed substanted hydrolyzed dyes, and solubilise and mulsify these into the aqueous medium and keep these substances in suspension.Prevent redeposition of hydrolyzed dyes and other particles of colloidal substance into the textile materialPrevent the precipitation of insoluble calcium or magnesium salt

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Example of Soaping agent

    Trade NameFormlonic*ApplicationABLUTEX TS330LiquidASoaping agent for dyed or printed with reactive dyes. Effective in Preventing white ground from being stained.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Optical BrightenerAn Optical Brightening Agent (OBA), also called Fluorescent Brightening Agent (FBA) or Fluorescent whiteners (FW), are strongly fluorescent substance that emits light in the blue-violet region of the visible spectrum.Example of OBAUltraphor FB CA, Ultraphor FB IN

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **FUNCTION OF DIFFERENT CHEMICALS WHICH IS USED IN SINHA DYEING & FINISHING

    NAME OF CHEMICALSFUNCTIONFelosen JetWetting agentSirrix 2UDSequestering agent, Maintain pHUNJAntifoaming agentLadiquestWetting agent, Detergent, Levelling agentStabilol PStabilizer (Organic)Cibacell DBCLevelling agent (Dye bath)TubinagolFinishing agentThinofixFinishing agent (cationic)Belfosin GTFinishing agent

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **PrintingThe textile printing is the art of design by mechanical and chemical application Printing Chemicals

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    ** Synthetic Thickening Agents for Pigment PrintingLutexal GP ECO High polymer, Acrylic Synthetic thickner Very high electrolyte stable, sharp defined prints, suitable for photographic prints and multicolour design. More environment-friendly because of low hydrocarbon emission.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Synthetic Thickening Agents for Reactive PrintingLutexal F-RP Acrylic co polymer Synthetic thickener, substitute for sodium alginate imparts higher colour yield and sharp defined prints. Used for printing cotton and viscose with reactive dyes. .

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Binders for Pigment Printing Helizarin Binder TOW Thermally crosslink able aqueous acrylate dispersion (APEO free) Binder for pigment prints that are fast to dry-cleaning having extremely soft handle excellent all round fastness and very high rubbing fastness. Used in Soft Print recipe.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Acrylic product Binder for khadi printing having good running properties & better fastness. Gives very good coverage to khadi prints. Binders for Khadi PrintingHelizarin Binder FB KH

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Crosslin king Agents and Fixers Cross linking agent for improving the wash and rub fastness of pigment prints on synthetic fibers and regenerated cellulose, and on their blends with cotton. For prints with a low formaldehyde content. Suitable for oeko-tex requirements.Helizarin Fixing Agent LF

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Fixers for Disperse PrintingLuprintan FB FA Mixture of ethoxylates Fixation auxiliary for the high temperature-steam fixation of disperse dyes in direct printing of polyester materials.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Antifoam for Pigment PrintingEntschaumer- TC ECO Eco Blend of synthetic copolymers and emulsifiers (APEO free) Solvent free and Antifoaming Agent for Textile Printing.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **SoftenersLuprimol SIG Concentrated silicon based auxiliary Softener, improves fastness giving high quality pigment prints having soft handle & high dry rubbing fastness. Improves colour brilliancy. Bilsoft FB-S Softener that gives an extremely soft feel to pigment prints.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **White Pastes for Pigment PrintingHelizarin White, Paste FB T Titanium dioxide in an aqueous acrylic binder system Ready to use white paste having good covering properties. Used for printing on dark grounds. Suitable for mainly woven fabric.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Process Flow Chart for Knit Dyeing: For Pink color

    Fabric: Single JerseyQuantity: 1310 kg GSM: 180M: L=1:7 (During Pretreatment)(During Dyeing)Color: Pink Water - 9200 lit (Pretreatment)10500 lit (During Dyeing)

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Recipe

    No.Commercial name of Dyes & ChemicalsAmount(g/l or %)Total amountPretreatment:1.Wetting Agent-Proder_SCPC/LD/NO-LF0.54.48 kg2.Gintex ECO GS CONE (S.A)0.1896gm3Peroxide Stabilizer SR/Stabilizer A/Stopa-520.43.584kg4Anticrease-AULIT-PAC(8460)0.87.360 kg5Caustic soda3.027.6 kg6H2O22.7525.3 kg7Peroxide Killer Geizyme OEM/Cetatex PC0.54.6 kg8Acetic Acid1.09.2 kgDye Bath Chemical:9Acetic Acid0.22.1 kg10Gintex ECO GS CONE (S.A)0.22.1 kg11Anticrease-AULIT-PAC(8460)0.88.4 kg12Leveling Drimegen E2R/Secho IND/Jinleve1.010.50 kgDyeing13Rea yellow HW0.01%0.131 kg14Rea. Orange-MEZRL0.07%0.917 kg15Syno. Red-HF6BN0.80%10.48 kg16Salt30314.4 kg17Soda ash883.84 kgAfter treatment:18Acetic Acid1.09.2 kg19Soaping Asugal-ALBI0.65.520 kg20Colour Softener Gensoft-100/150/ASUMIN B0.7%9.170 kg

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Textile finishing is a term commonly applied to different process that the textile material under go after pretreatment, dyeing or printing for final embellishment to enhance there attractiveness and sale appeal as well as for comfort and usefulness Finishing

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Water Repellents ChemicalsLurotex TX-C Anionic aqueous solution of inorganic saltsUniversal product, applicable for finishing woven-and knitted goods from cotton and blends of cotton with synthetic fibres.Lurotex TX-S Especially suitable for finishing woven-and knitted goods from synthetic fibres and blends with cellulosic fibres. Very soft handle

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Antistatic AgentsSiligen APE Slightly cationic quaternary ammonium compoundFor antistatic finishing of natural or synthetic fibres and their blends. No adverse effects on the fabric handle.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Additives and BindersPerapret PU New Polyurethane DispersionPolyurethane additive and binder for finishing textiles with and without pigments. Suitable for embossed and chintz finishes.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Antipilling and Non Slip FinishPerapret HVN Antipilling agent and resin finishing additive for woven and knitted fabrics composed of cellulosic fibres and their blends with synthetic fibres. Increases tear strength and abrasion resistance.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Crosslinking AgentsFixapret AP Low formaldehyde modified dimethyloldihydroxyethylene urea Crosslinking agent for low-formaldehyde, wash-resistant resin finishing of woven and knitted fabrics composed of cellulosic fibres and their blends with synthetic fibres.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Additives, Smoothing Agents and SoftenersBasosoft FB EUK Universal cationic softener for all fibres and blends, imparts a very soft handle. It can be used on loose stock, tops, yarn or piece goods, and applied by all sorts of different methods, such as dipping, padding and sprayingSiligen F Jet Silicone fluid additive, softener and smoothening agent for woven and knitted fabrics composed of cellulosic fibres and their blends with synthetic fibres. Product has good shearing stability and is suitable for the exhaust application

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Optical Brightener AgentFluorescent BrightenersUltraphor FB CA Anionic high affinity fluorescent brightener for cotton, recommended for exhaust.

    Ultraphor SFR Plus LiqStable, fluorescent brightener for polyester and blends. It has good fastness to sublimation.

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

    **Thanks To All

    School of Science and Engineering, Department of Textile EngineeringSoutheast University

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