• agglomeration and crushing mechanism of disperse dyes

    agglomeration and crushing mechanism of disperse dyes. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including quarry, aggregate, and different kinds of minerals.

  • Dyeing with Disperse Dyes IntechOpen

    Fig. 5. Some typical azo disperse dye structures. 2.1.2 Anthraquinone disperse dyes Anthraquinone disperse dyes were among the early acetate dyes and have made an important contribution to the violet and blue shade range. They prod uce bright dyeings of excellent light fastness and cause no dye stability problems during dyeing.

  • Disperse Dyes Classification Properties Dyeing Mechanism

    Apr 05, 2020· Disperse Dyes. The development of disperse dyes was carried-out to permit the dyeing of hydrophobic thermoplastic fibers (ex. acetate, triacetate, nylon, polyester, acrylic) and other synthetics.. These dyes are mostly substituted azo, anthraquinone, or diphenylamine compounds that are sparingly water-soluble and non-ionic.

  • Disperse Dyeing an overview ScienceDirect Topics

    J.N. Chakraborty, in Fundamentals and Practices in Colouration of Textiles, 2014 18.6 Mechanism of dyeing. Disperse dyeing of manmade fibres follows a solid–solid interaction where a solid dye is solubilised in another solid fibre phase and in all cases the dye forms no chemical bonds with fibre rather is retained by H-bonds and Van der Waals forces, except reactive disperse dyes which react

  • Disperse dye Wikipedia

    Disperse dyes are non-ionic in nature and partially soluble in water. The interaction of dye molecule and polymer takes place with Van der Waals and dipole forces. Disperse dyes have better diffusion at boiling to a higher temperature. Examples. Disperse Orange 1 is an azo dye. Disperse Red 9 is a red dye derived from anthraquinone.

  • The dyeing of polyester fibres with disperse dyes

    The dyeing of polyester fibres with disperse dyes. Mechanism and kinetics of the process for purified dyes D. Patterson and R. P. Sheldon, Trans. Faraday Soc., 1959, 55, 1254 DOI: 10.1039/TF9595501254 If you are not the

  • The stability of disperse red/reactive-red dye inks

    (a) is disperse dyes and dispersantMF, R– is hydrophobic group, SO 3 is hydrophilic group. (b) and (c) are formation of the electric double layer. Fig. 2 Dispersion mechanism of disperse dye ink. (a) is disperse dyes and fatty alcohol polyoxyethylene ether, R–O– is hydrophobic group, –CH 2–CH 2–O– is hydrophilic group. (b) and (c

  • Adsorption of Dye an overview ScienceDirect Topics

    This prevents agglomeration of the dye particles in powder form and aggregation in the dyebath. The dye solubility in the dyebath can be increased by the use of levelling agents and carriers. The general mechanism of dyeing with disperse dyes under exhaust dyeing conditions is illustrated in Fig. 9.1.

  • Stabilization mechanisms of C.I. Disperse Red 60

    Stabilization mechanisms of C.I. Disperse Red 60 dispersions in the presence of its dye–polyether derivatives The agglomeration of organic matter (dyes, pigments, disperse dyes/P(St-BA

  • Waterless Dyeing Technology

    Disperse Dyeing Mechanism Dye Surfactant (Dispersing agent) Micelle Polyester fiber 1) Some of the dyes dissolve in the water of the dyebath in the form of micelles with the aid of surfactant. 2) Molecules of dye are transferred from solution to the surface of the fibre. 3) The adsorbed dye diffuses monomolecularly into the fibre.

  • How to disperse and stabilize pigments

    where h is the depth (or height) of penetration during the time t, is the surface tension of the wetting liquid, its viscosity, the wetting angle, r mean radius of capillaries, C structural coefficient, associated with parameters of the porous structure, W energy (heat) of wetting.. The wetting step of dispersing processes can be intensified by the use of wetting agents and/or

  • Development of disperse dye polypropylene fiber and

    The bonding mechanisms of polymer and disperse dye. For a compact structure, high crystallinity and non-polarity, the dye molecule does not enter the PP fiber, thus resulting in poor dyeability. Since the fiber has very low hydrophilicity, its affinity to dyes and chemical additives is poor.

  • Effectiveness of Peat Coagulantfor the Removal of Textile

    of this peat coagulant to remove reactive dyes (cibacron brilliant red and reactive blue 19), vat dye (vat blue 14) and disperse dye (disperse red 72) from their aqueous solution and the removal of colour from textile wastewater. This study focused on the effect of pH, dosage and comparison with conventional coagulants namely alum and PAC.

  • Leveling agents: chemistry and performance

    2 days ago· The function of dispersing agent is to prevent agglomeration of individual dye particle during dyeing. They play a subsidiary role in dispersion involving in textile coloration. Dispersing agents are much preferred for Vat dyeing, Disperse dye and pigment padding. The anionic product ionizes water and form an electrical double layer.

  • BIOCOMPATIBLE AND BIODEGRADABLE NATURAL DISPERSE DYES

    The disperse dye of the present invention can be used for the dyeing of polyester fabrics by traditional methods in concentrations ranging from 0.01% to 20% on weight of fibers (OWF), thus providing a dyed fabric with good color strength and good fastness to light, washing and rubbing, under conditions of dye exhaustion of greater than 90%.

  • Adsorption of dyes by nanomaterials: Recent developments

    Aug 17, 2015· 1. Introduction. Dyes have been extensively used for thousands of years for textile, paint, pigment and many other applications .Today, dyes play a critical role in textile, paint and pigment manufacturing industries, and at least 100,000 different dye types are commercially available currently .To meet industrial demand, it is estimated that 1.6 million tons of dyes are produced annually, and

  • An Overview: Recent Development of Titanium Oxide

    Today, organic dyes are one of the largest groups of pollutants release into environment especially from textile industry. It is highly toxic and hazardous to the living organism; thus, the removal of these dyes prior to discharge into the environment is essential. Varieties of techniques have been employed to degrade organic dyes and heterogeneous photocatalysis involving titanium dioxide

  • Modification of polyester (PET) Processing, Dyeing

    So, it can only be dyed by disperse dyes. Compared to ionic dyes, disperse dyes have smaller molecular extinction coefficients and lower build-up property. So these dyes cannot give bright and deep colours. Moreover, fastness to sublimation and wet treatments of disperse dyes are relatively poor compared to other classes of dyes.

  • Leveling & Dispersing Agent Primasol FAMK Manufacturers

    Leveling agents ensures uniform build-up of disperse dyes at lower temp. in the range of 98 to 120˚C for polyester and blends, where high temp. adversely affects the substrates like spandex, wool etc. This leveling agent is highly efficient relevelling agent for dyeing of polyester with disperse dyes to

  • Effects of Ultrasound Treatment and Dye Crystalline

    The results show that ultrasound breaks larger dye particles suspended in water in their insoluble form into finer dye particles and reduces the mean particle size of disperse dyes.

  • Development of disperse dye polypropylene fiber and

    The bonding mechanisms of polymer and disperse dye. For a compact structure, high crystallinity and non-polarity, the dye molecule does not enter the PP fiber, thus resulting in poor dyeability. Since the fiber has very low hydrophilicity, its affinity to dyes and chemical additives is poor.

  • Waterless Dyeing Technology

    Disperse Dyeing Mechanism Dye Surfactant (Dispersing agent) Micelle Polyester fiber 1) Some of the dyes dissolve in the water of the dyebath in the form of micelles with the aid of surfactant. 2) Molecules of dye are transferred from solution to the surface of the fibre. 3) The adsorbed dye diffuses monomolecularly into the fibre.

  • How to disperse and stabilize pigments

    where h is the depth (or height) of penetration during the time t, is the surface tension of the wetting liquid, its viscosity, the wetting angle, r mean radius of capillaries, C structural coefficient, associated with parameters of the porous structure, W energy (heat) of wetting.. The wetting step of dispersing processes can be intensified by the use of wetting agents and/or

  • JP2011089046A Disperse dye ink used for inkjet printer

    PROBLEM TO BE SOLVED: To provide a disperse dye ink used for inkjet printers having sublimation fastness, dry-heat fastness more favorable than dye sublimation inks by refining a disperse dye which forms a color at high temperature of 200-240°C, improving a solvent, improving the head of the inkjet printer and improving heating and other process conditions during a color forming step; and to

  • Effectiveness of Peat Coagulantfor the Removal of Textile

    of this peat coagulant to remove reactive dyes (cibacron brilliant red and reactive blue 19), vat dye (vat blue 14) and disperse dye (disperse red 72) from their aqueous solution and the removal of colour from textile wastewater. This study focused on the effect of pH, dosage and comparison with conventional coagulants namely alum and PAC.

  • US5972047A Amine modified sulfonated lignin for disperse

    Dyestuff compositions are provided which incorporate amine modified sulfonated lignins. The disclosed dyestuff compositions exhibit improved heat stability and, as a result of the higher activity of the amine modified sulfonated lignin, less dispersant is present in the exhaust liquor and waste treatment demands are thereby reduced. The presence of tertiary amine groups in sulfonated kraft

  • BIOCOMPATIBLE AND BIODEGRADABLE NATURAL DISPERSE DYES

    The disperse dye of the present invention can be used for the dyeing of polyester fabrics by traditional methods in concentrations ranging from 0.01% to 20% on weight of fibers (OWF), thus providing a dyed fabric with good color strength and good fastness to light, washing and rubbing, under conditions of dye exhaustion of greater than 90%.

  • Review Article An Overview: Recent Development of Titanium

    Mass of dye water (1000 tons) Acid Reactive Disperse Direct Vat Basic Sulfur Types of textile dyes F : Mass loss of global dyes into the wastewater [ ]. organic dyes [,, ]. ese pollutants can cause irritation of the eyes, skin, respiratory tract, sore throat, asthma, and allergic contact dermatitis [ ]. e persistent organic dye

  • Materials Free Full-Text Photocatalytic Membrane

    After the dyeing process, part of the dyes used to color textile materials are not fixed into the substrate and are discharged into wastewater as residual dyes. In this study, a heterogeneous photocatalytic process combined with microfiltration has been investigated for the removal of C.I. Disperse Red 73 from synthetic textile effluents. The titanium dioxide (TiO2) Aeroxide P25 was selected

  • Pigment printing SlideShare

    May 29, 2014· Pigment printing 1. It can be described as a localized form of dyeing, applying colorant to selected areas of the fabric to build up the design. Textile printing, like textile dyeing, is a process for applying color to a substrate. However, instead of coloring the whole substrate (cloth, carpet or yarn) as in dyeing, print color is applied only to defined areas to obtain the desired pattern

  • Evaluation of the dyeing properties of basswood veneer

    Both dye uptake and K/S decreased when the addition was above 40 g/L because the excessive amount of salts caused dye agglomeration and deposition (Deng et al. 1998). Fig. 4. Effect of dyeing assistant on dye-uptake and K/S. Fig. 5. Effect of volume ratio on dye-uptake and K/S. Effect of Volume Ratio on Dye Uptake and K/S

  • Toxicity of Disperse Dyes and its Removal from Wastewater

    Among various dyes, disperse dyes are commonly used in pulp and paper mill, textile mill and plastic industry in India. The solubility of disperse dyes in water is very less due to their crystalline structure with varying particle size. Disperse dyes are scanty in dispersing and cause unbalancing composition of dye during dying process 14

  • Modification of polyester (PET) Processing, Dyeing

    So, it can only be dyed by disperse dyes. Compared to ionic dyes, disperse dyes have smaller molecular extinction coefficients and lower build-up property. So these dyes cannot give bright and deep colours. Moreover, fastness to sublimation and wet treatments of disperse dyes are relatively poor compared to other classes of dyes.

  • Indian Journal of Science and Technology, Vol 11(12), DOI

    Dyes are basically organic compounds that get attached to the surface of the fabric to impart color, com-monly known as coloring agents. They are water soluble, producing bright colors in water with acidic properties. Dyes are widely used in many industries that include paper, printing, textile, food, cosmetic and many others.