Effect of Synergist on Pigment Violet 23

Abstract

There is a need in the area of solvent dispersion of organic pigments for products of lower viscosity (i.e. fluidity) and improved transparency and gloss. This is especially a need in the area of solvent inks for packaging applications. The solvents in these inks are typically oxygenated types and alcohols (ethanol, propanols), esters (ethyl acetate, isopropyl acetate) and ethers (mono methyl ether of propylene glycol), or mixtures of it. The typical resins dissolved in these solvents for formulating packaging inks are nitrocellulose, polyamide, polyurethane and polyvinyl butyrate. Preparation of Mono sulphonation of Dioxazine compound is carried out with controlled Degree of Sulphonation like 0.9. After that this mono sulphonated mass is coupled with long chain Amine (C10-C18) and prepared new additive. Effect of this sulphonated mass and additive is measured by addition into pigments. This effect is measured in solvent base ink application and found that due to effect of this sulphonated mass and additive gives excellent flow with improved gloss and transparency.