Pearl pigments are extraordinary sort of pigments having a place with the gathering of luminous and fluorescent pigments. Pearl pigments are otherwise called pearlescent pigments. Pearl pigments have a straightforward appearance due to smooth and profoundly intelligent planes. These pigments have a pearly sparkle when covered with a layer of metallic oxide, in nearness of mica. Thus the name ‘pearl’ pigments. Pearl pigments covering give an energetic visual effect and improves enhancements. For the most part titanium dioxide covering is utilized in present of fine mica chip for the assembling of pearl pigment coatings. Carbon dark powder is added to improve the shinning impact of pearl pigments.
Pearl pigments are bad conductor of heat and electricity; can withstand temperature as high as 800 degree C. Pearlescent pigments has high acid and alkali resistance capacity. These properties make them a preferable choice for coating pigments; they are widely used for automobile coating. The pearly gloss of the pearl pigments provides a new color quality to the automobiles. They are extensively used in the manufacture of luxurious cars and other sport vehicles.
The artificial luster of the pearl pigments also finds application in the toy making industry. Pearl pigments are mixed with other monochromatic coating mixtures to prepare pearl light coating. Pearl light coating is used in the building and construction industry. Pearl light coatings are also being used to manufacture semi-transparent and transparent plastic materials. Printing industry is also a key end user industry of pearlescent pigments. The different colored and lustrous inks used for printing purposes use pearl pigments. Pearl pigments are safe and non toxic for edible purposes so they are widely used for food packaging.
Pearl pigment was innovated in the later part of the twentieth century. In the initial stages it was extracted from fish scales. However with the development of technology, titanium dioxide and mica flakes replaced fish scales in the manufacturing process of pearl pigments. The largest consumer of pearl pigments is the paint and coating industry. The paint and coating industry accounts for more than half of the market share of pearl pigments by volume. The printing industry is the next largest consumer of pearl pigments. Although North America is the largest market for pearlescent pigments, Asia Pacific is the fastest growing market for pearl pigments.
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Increase in the automobile manufacturing activities in countries such as Japan, South Korean, China and India has fuelled up the demand for pearl pigments in the Asia Pacific region. The demand for this pigment decreased drastically in Europe due to the economic slowdown in most of the European countries. However the economic condition is improving in Europe so the demand for pearl pigments can be estimated to rise. Germany and Italy are the largest pearl pigment markets in Europe owing to their large automobile market. Pearl pigments are more preferred over other pigments such as chromium and cadmium containing pigments.
Pigments containing heavy metals such as chromium, cadmium, lead and mercury are highly toxic and hazardous. The U.S. Environmental Protection Agency banned the use of heavy metal containing pigments as they are harmful to human and the environment. This elevated the demand for pearl pigments, as they are non-toxic and eco-friendly. The popularity of green building in the world has further increased the usage of pearl pigments for manufacturing of paints and coatings for buildings. Some of the key manufacturers of pearl pigments are Millennium Chemicals, Inc., BASF SE, Heubach GmbH, L’Arca Srl and The Dow Chemical Company.