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  2. Sun Chemical - Wikipedia

    en.wikipedia.org/wiki/Sun_Chemical

    Sun Chemical is the world's largest [citation needed] producer of printing inks and pigments and is located in Parsippany-Troy Hills, New Jersey. It was incorporated in 1945. [ 1 ] The company has its roots as the Lorilleux & Cie. Paris in 1818, but was incorporated under the Sun name in 1945. [ 2 ]

  3. DIC Corporation - Wikipedia

    en.wikipedia.org/wiki/DIC_Corporation

    The company slogan "Color & Comfort By Chemistry" suggests that DIC products should deliver color and comfort to daily life. The company operates worldwide (through 176 subsidiary and affiliate companies in 62 countries) and includes the Sun Chemical corporation, based in the Americas and Europe. [1]

  4. Sun printing - Wikipedia

    en.wikipedia.org/wiki/Sun_printing

    A specialized type of vat dye called Inkodye is also used for sun-printing due to its light-sensitive quality. [2] Unlike other vat dyes which use oxygen to develop their color, Inkodyes are developed by light. [3] These dyes are suspended in leuco form appearing colorless until they are exposed to UV.

  5. Ink - Wikipedia

    en.wikipedia.org/wiki/Ink

    Ink is a gel, sol, or solution that contains at least one colorant, such as a dye or pigment, and is used to color a surface to produce an image, text, or design. Ink is used for drawing or writing with a pen , brush , reed pen , or quill .

  6. Lightfastness - Wikipedia

    en.wikipedia.org/wiki/Lightfastness

    Light encountering a painted surface can either alter or break the chemical bonds of the pigment, causing the colors to bleach or change in a process known as photodegradation. [6] Materials that resist this effect are said to be lightfast. The electromagnetic spectrum of the sun contains wavelengths from gamma waves to

  7. List of RAL colours - Wikipedia

    en.wikipedia.org/wiki/List_of_RAL_colours

    Number Sample Colour name Description, examples RAL 1000: Green beige: RAL 1001: Beige: RAL 1002: Sand yellow: Vehicles of the Afrika Korps 1941–1943 : RAL 1003: Signal yellow: Latvian Pasažieru vilciens (Vivi) train main livery colour

  8. Optically variable ink - Wikipedia

    en.wikipedia.org/wiki/Optically_Variable_Ink

    Optically variable ink used in popular USB drives that are often subject to counterfeiting. Taken from 2 different angles. Optically variable ink (OVI) also called color shifting ink is an anti-counterfeiting measure used on many major modern banknotes, as well as on other official documents (professional licenses, for example).

  9. Thermochromism - Wikipedia

    en.wikipedia.org/wiki/Thermochromism

    The colors are intense and seem to be caused by Cu(I)–Hg(II) charge-transfer complexes. [7] Silver mercury iodide (Ag 2 [HgI 4]) is yellow at low temperatures and orange above 47–51 °C, with intermediate yellow-orange states. The colors are intense and seem to be caused by Ag(I)–Hg(II) charge-transfer complexes. [7]