Classification of dye based on chemical nature can be described as follows. Following classifications are the main classes divided on the basis of chemical structure and reactions. Classification of dye based on chemical nature Indigoid dyes This classification of dye often occurs the foremost necessary cluster of natural dyes. The colouring material is extracted from …
Continue reading Classification of Dye based on chemical natureBasic dyes also called cationic dyes, because in solution basic dye molecule ionizes. Causing it’s colored component to become a cation or positively changed radical. In market basic dyes are obtained as a basic salt usually chlorides, but sometimes oxalates or double salts with zinc chloride (ZnCl2). Basic dye specially used for jute fibre, also …
Continue reading Types and properties of Basic DyeThe dye which is capable of reacting chemically with a substrate to form a covalent dye-substrate linkage is known as reactive dye. D-SO2-CH2-CH2-OSO3Na + OH-Cell →D- SO2-CH2-CH2-O-Cell + NaHSO3 Trade name: Poocion Cebacron Remazol Levafix Primazin Properties: Reactive dyes are cationic dyes. Found in powder or liquid form. Forms covalent bond. Soluble in water. Very …
Continue reading Reactive Dye and its Properties and Classificationsa.Acid dye: Man made (Synthetic nylon) & Natural protein fibre (wool, silk) b.Azoic dye: Man made & Natural cellulosic fibre (Cotton, Viscose) c.Direct dye:Man made & Natural cellulosic fibre (Cotton, Viscose) d.Disperse dye: Mane made ester, cellulosic & synthetic fibres specially the acetate fibres & Polyester & less of acrylic & nylon fibre. e.Reactive dye: …
Continue reading Selection of dye according to fibre character