Colorants: Organic and Inorganic Pigments - PDF Free DownloadA pigment is a material that changes the color of reflected or transmitted light as the result of wavelength -selective absorption. This physical process differs from fluorescence , phosphorescence , and other forms of luminescence , in which a material emits light. Most materials selectively absorb certain wavelengths of light. Materials that humans have chosen and developed for use as pigments usually have special properties that make them useful for coloring other materials. A pigment must have a high tinting strength relative to the materials it colors. It must be stable in solid form at ambient temperatures. For industrial applications, as well as in the arts, permanence and stability are desirable properties.
Dispersions & Pigments
Used initially for the coloring of plastics, 0? The shape of the crystal can be influenced by seeding with appropriate crystals and by the degree of calcination. In addition to high performance coating finishes these colors also find a major outlet in the fibers industry. For the pH studies, these pigments are now finding increased use in the coatings industry knorganic their excellent fastness properties are demanded.
HCC[o] or by the addition of small quantities of organic groups such as carboxylic acids. However, they are increasingly synthesized. Sources of additional information 1. Disposal of waste can also be problematic and local regulations care- fully followed.
Colorants: Organic and Inorganic Pigments
Inorganic Pigments Application - C&G COLORS S.A.
This PDF 1. The current document download page has been viewed times. File size: KB 1 page. Privacy: public file. Public files: February 08 February Know about Organic and Inorganic Pigments. Know about Organic and Inorganic Pigments The pigments are commonly incorporated by a physical mixing with a medium, as well as it is a feature that differentiates pigments from dyes.
Improved transparency and lightfastness vs. The proposed surface complex was then used as the basis for a three dimensional periodic structure due to the inability of CASTEP to handle non-periodic structures. Both greens are shown in color plate. Sign up here to see what happened On This Dayevery day in your inbox.
Excellent lightfastness. It has a good white colour and very high resistance to organic solvents, resulting in their having high transparency, but are correspondingly weaker owing to the barium sulphate content. Their properties follow those of zinc sulphide, and heat? Converse.The nearer to a perfect sphere the better, hence Ottawa sand is considered pigmrnts be the best natural milling material. Water-based systems are poor wetters of dry pigments and require the presence of a surfactant to aid in the wetting process. Conversely nonmetallized azo reds do not contain an anionic group in their structure and therefore cannot complex with a metal cation? Patterson, D.
O n e also has to consider if the coating is likely to be overcoated. Pigments for paint Isoindoline pigments are chemically related to the methine types. Many pigments fade or darken or change shade badly in the light. Giustetto, F.