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Pigment intermediates
2011/6/13 12:09:10
Organic compounds as raw materials to manufacture colored pigments as organic pigments ORGANIGPIGMENT. Refers to a range of pigments with color and other characteristics, from a class of organic compounds made of paint. Color features include Fast, anti-flooding, acid, alkali, organic solvent resistance, heat resistance, crystal stability, dispersibility and hiding power and so on. Difference between organic pigments and dyes are colored objects, it is no affinity, and only through adhesive or film-forming material will be attached to the surface of organic pigments, or mixed in with the object inside the object color. Intermediates required for their production, production equipment, and synthetic dye production processes are similar, so the organic pigments tend to organize production in the dye industry. Organic pigments and inorganic pigments compared to the general, usually have a high color strength, easy to grind and disperse particles, not easy to precipitation, are more bright colors, but the Light, heat, weathering performance is poor. Organic pigments commonly used in printing ink, paint, rubber, plastic products, stationery and building materials and other materials coloring.
Classified according to structure:
(1) azo pigments 59%
(2) 24% phthalocyanine pigment
(3) Miyoshi methane accounted for 8% of the pigment
(4) 6% special paint
(5), polycyclic pigments, 3%
Organic pigments and vibrant coloring; density, non-toxic, but some varieties of light, heat, solvent and migration resistance is often not as good as inorganic pigments. Changes in the endless variety of colors, colorful, but there are some among the various colors of the internal relations are available for each color to determine the 3 parameters, namely, hue, lightness and saturation.
Hue is the color difference between the characteristics of each other, depending on the source composition and the chromatographic surface of the wavelength emitted by the human eye on the feelings generated, distinguishing red, yellow, green, blue, purple and other features. Brightness, also called brightness, is the extent that changes in light and dark surface features of value; by comparing the brightness of various colors, colors, and the darker it will have a clear distinction.
Saturation, also known as saturation, is that the characteristics of the surface value of the color shades, so bright and Yinhui of color have not.
Hue, lightness and saturation form a three-dimensional, with the establishment of these three scales, we can use numbers to measure the color. Ever-changing colors of nature, but the basic red, yellow, and blue, called primary colors. |
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