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Acid dyes

by : Pramukh_Industries

Posted on - February 07, 2017 10:37:52AM

Region : National

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Acid dyes are highly water soluble, and have better light fastness than basic dyes.The textile acid dyes are effective for protein fibers such as silk, wool, nylon and modified acrylics. They contain sulphonic acid groups, which are usually present as sodium sulphonate salts. These increase solubility in water, and give the dye molecules a negative charge. In an acidic solution, the -NH2 functionalities of the fibres are protonated to give a positive charge: -NH3+. This charge interacts with the negative dye charge, allowing the formation of ionic interactions. As well as this, Van-der-Waals bonds, dipolar bonds and hydrogen bonds are formed between dye and fibre. As a group, acid dyes can be divided into two sub-groups: acid-leveling or acid-milling.

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Pramukh a name to reckon with in the Dyestuff & name synonymous with qualitative marketing of its products, has been serving the needs of its valued customers since 1981 From manufacturing & marketing of Direct Dyestuffs Pramukh has successfully diversified into Direct, Reactive & Acid Dyestuff alongwith Pigments. Boosting of a Young, dedicated & enthusiastic, yet experienced group of management & employees, Pramukh is expanding its horizon. Having established itself firmly in India, Pramukh is gearing itself to meet the challenges of global competition by venturing into various overseas markets.

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