Acetate dyes

Dispersion Technology. Substantial advancements in dispersion technology have been made since the initial introduction in 1923 of disperse dyes in paste form for cellulose acetate. Dyes were dissolved in sulfonated fatty acids such as sulforicinoleic acid [36634-48-7] (SRA),... 

Cellulose acetate Silica gel Scoured wool Sawdust Rayon waste Fluorspar Tapioca Breakfast food Asbestos fiber Cotton linters Rayon staple Starch Aluminum hydrate Kaolin Cryolite Lead arsenate Cornstarch Cellulose acetate Dye intermediates Calcium carbonate White lead Lithopone Titanium dioxide Magnesium carbonate Aluminum stearate Zinc stearate Lithopone Zinc yellow Calcium carbonate Magnesium carbonate Soap flakes Soda ash Cornstarch Synthetic rubber... 

Suitable disperse dyes for polyester require good sublimation fastness and generally contain additional or more hydrophobic substituents compared with acetate dyes. Thus, for example, Cl Disperse Red 60 (6.42) is important for the dyeing of polyester fabrics but has only moderate sublimation fastness. It is, however, the most important red dye for transfer... 

Uses. Production of cellulose and vinyl acetate dyeing pharmaceuticals and food... 

ACETATE DYE. One group comprises waler insoluble azo or antlira-quinone dyes that have be highly dispersed to make them capable of penetrating and dyeing acetate fibers. A second class consists of water-insoluble amino azo dyes that are made water soluble by treatment with formaldehyde and bisulfite. After absorption by the fiber, the resulting sulfonic acids hydrolyze and regenerate the insoluble dyes,... 

For example, the (> -hydroxyalkyl groups (R1 and/or R2 = OH), typical of many acetate dyes, were replaced by less hydrophilic groups such as CN, OCOR, and COOR, which enhanced the affinity for polyester fibers and, in many instances, the fastness to light and sublimation [9,15],... 

For printing disperse dyes on cellulose acetate, dyes are selected according to their colorfastness on 2.5-acetate and triacetate. Fixation is carried out for 2.5-acetate in saturated steam at 102°C for 20-40 min for triacetate 20-30 min at 0.25 MPa (127°C) or in superheated steam 8-6 min at 165-185 °C. 

C, 750 mm d=l.0337 1 ) It is a water-miscible colorless liquid at room temperature, with an appreciable vapor pressure (40mm 825.2°C) and a penchant for forming explosive peroxides—a characteristic of oxygen ethers on storage. Its primary use is that of solvent for a large number of industrial products, e.g. cellulose acetate, dyes, fats, greases and waxes paints, lacquers and varnishes, etc. 

Disperse dyes were invented to dye the first hydrophobic fiber developed, namely cellulose acetate, and were initially called acetate dyes.25 The term disperse dyes is more appropriate, because these dyes are suitable for a variety of hydrophobic fibers and it is descriptive of their physical state in the dye-bath. Disperse dyes have extremely low water solubility and to be applied from this medium they must be (1) dispersed in water using a... 

Schoondorp, M. A., Schouten, A. J., Hulshof, J. B. E., Feringa, B. L., and Oosteigetal, G. J. Langmuir-Blodgett Films of Amylose Acetal Dye Mixtures. 1. Monolayer Behaviour of Mixtures of Amylose Acetate and a Chiral p-Nitroazobis(benzene) Dye. Langmuir 8, 181 ... 

Use Solvent for cellulose acetate, dyes, inks, resins, perfume fixative organic synthesis (selective hy-droxyethylating agent) coating compositions for leather, paper, and cloth lacquers. 

Rexolene. [Emkay] Sulfonate dydng assistant dispersant for acetate dyes. 

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