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Article | REF: AM3234 V2

Colorants and pigments

Author: Daniel WYART

Publication date: July 10, 2010 | Lire en français

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    4. Main types

    A filler is a solid substance used in plastics. They are introduced to modify or reinforce physical or mechanical properties, improve fire resistance or reduce cost. Its incorporation rate varies from a few % to several dozen %.

    For example:

    • mineral fillers (talc, barium sulfate, antimony oxide, etc.);

    • organic fillers (wood flour, etc.);

    • reinforcing fillers (glass fibers, flax fibers, etc.).

    Fillers are not included in the term "pigments". Their main purpose is not to color.

    The Colour Index CI is a systematic way of identifying a colorant and its chemical formula. This coding system is universally known. An association of American chemists (The Society...

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