How much do you know about organic pigments?

Organic pigments play a vital role in modern industry and art, and are widely used for their vibrant colors, excellent lightfastness, and eco-friendly properties. So what exactly are organic pigments made of? In this article, we will analyze the composition of organic pigments and discuss their wide range of applications in a number of fields.

 

Organic pigments play a vital role in modern industry and art, and are widely used for their vibrant colors, excellent lightfastness, and eco-friendly properties. So what exactly are organic pigments made of? In this article, we will analyze the composition of organic pigments and discuss their wide range of applications in a number of fields.

 

Organic pigments are a class of carbon-based pigments that, in contrast to inorganic pigments, are mainly composed of organic compounds. Typically, organic pigments are insoluble in water or common organic solvents, but processes such as crushing and dispersing can be used to ensure that the pigments are evenly distributed in different media to produce the desired color effect.

 

Main components of organic pigments

The basic composition of organic pigments can be divided into several important parts:
Chromophore: This is the core part of the pigment molecule that is responsible for absorbing specific wavelengths of light and reflecting other light to render the color. Common coloring groups include azo (-N=N-) and phthalocyanine.

 

Auxochrome groups (Auxochrome): These groups do not give color to the pigment by themselves, but they can influence the light absorption properties of the coloring groups, thus enhancing or changing the color effect of the pigment. Common auxochrome groups include hydroxyl group (-OH), amino group (-NH2) and so on.

 

Benzene rings and conjugated systems: Many organic pigment molecules contain benzene rings or other conjugated structures that help stabilize the energy state of the molecule, thus improving the light resistance and stability of the pigment.

 

Solubilizers and dispersants: In the production of organic pigments, the use of solubilizers and dispersants can effectively enhance the dispersion and application of the pigment in the medium, commonly used fatty acids and surfactants.

 

Application areas of organic pigments

Thanks to their unique physicochemical properties, organic pigments are widely used in many industries, mainly including:

1.Coatings and paints: The vibrant colors and excellent weathering resistance of organic pigments make them a common ingredient in automotive, architectural and home décor coatings.

2.Plastics & Rubber: Organic pigments are used in plastics and rubber products to impart rich colors while maintaining the mechanical properties and chemical stability of the materials.

3.Inks and Printing: With their high color strength and good dispersibility, organic pigments are widely used in printing inks, especially in packaging printing and high-grade publication printing.

In summary, organic pigments, with their unique properties, have become indispensable key materials in a number of industries.Ogilvy chemical specializes in manufacturing organic pigments with a wide range of coloring power and uniform dispersion. Phthalocyanine blue, ultramarine, phthalocyanine green, pigment red 57:1, pigment yellow 12, pigment violet 23, etc. If you have the need of whitening and coloring, please feel free to contact us!