One of the oldest applications of dyes and pigments is the paper and pulp industry. There are several grades and varieties of paper that undergo the dyeing process besides the regular writing paper. Some of them include copier papers, facial tissue paper, envelope grades, cover papers, corrugated cases and specialty papers.
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Automotive coatings and organic high performing pigments go hand in hand. Automotive coatings are defined as a type of paint that is increasingly used in the automotive sector. It offers a protective shield to the automobiles exterior surface besides enhancing their aesthetic appeal. And organic high performing pigments is a major constituent of automotive coatings.
Pigments and dyes are two colorants responsible for making our world so bright and colorful. Though the function of both is the same they differ in their properties and features. The main point of difference arises from their solubility feature. Putting it simply, if a color imparting material dissolves in a liquid like how sugar does in water then the material is called a dye. Pigments are color imparting powders that are not soluble in the liquid in which they are mixed.
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Dyes have been in use as colorants since ancient times and have wound their way in a number of industrial and commercial applications. Fabricated dyes are known as synthetic dyes and basic dyes forms a part of this synthetic dye class. One of the most popularly used dye in coloring of paper and acrylic fibers, basic dyes are renowned for their brightness and powerful coloring abilities.
Humankind has always been fascinated by colors for social and aesthetic reasons. Dyes and pigments which are the two color sources total to about 9000 in number today. A number of causes such as requirement of wide array of tints and hues, chemical composition of the substances to be colored and the direct relation of color to the molecular structure of the dye has led to the existence of this vast number.
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The world of dyes and pigments is vast and there are innumerable varieties of these colorants to fulfill the requirements of varied industrial and commercial sectors. Acid dyes, basic dyes, solvent dyes, lake colors, pigment colors are just to name a few from the vast ocean of colors. This article will talk in brief about the solvent dye.
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Fabrics are attractively colored to heighten their appeal and sales. Color is added to the fabric base in two ways; dyeing and printing. Dyeing engulfs the entire fabric in colour while printing lends color in specific places. The main ingredient in the dyeing process is the dye which comes in two classes namely natural dyes and synthetic dyes. Dyes obtained from natural sources like nuts, flowers, berries etc. are called natural dyes while those based on chemical compositions are termed as synthetic dyes. You have a wide variety here like acid dyes, basic dyes, sulfur dyes, reactive dyes and many more.
Continue reading Basic concepts of color, color mixing and classification of dyes explained…
Napthols are azoic dyes which are largely used in handloom sector to dye cellulosic fibers. They are termed as such because their molecules hold an azo group. Distinguished by their brightness, magnificence and overall fastness features, they help to create some of the vividly colored fabrics. Some of the shades regularly produced by dyers include orange, brown, yellow, scarlet, golden yellow, black, red, violet etc.
Dyes and pigments are responsible for making this world a much brighter place. Their role in varied applications is highly important and one of the industries which have been a large beneficiary of their attributes is the paint industry.
Continue reading Paint & Textile Industry- Largest Beneficiaries of Pigments & Dyes
Dyes and pigments are the agents that are responsible for making our world so colorful today. In earlier times, dyes were sourced from plant and animal kingdom and even today some industries and applications still use such naturally sourced dyes. However, only a few of them have made it to the commercial markets.