Novel and reactive liquid colorants for poly urethanes are described. These products, offered by Milliken under the tradename REACTINT™, are polyols with chemically bound chromophores. These colors react with isocyanates during polyurethane formation and become an integral part of the poly mer. At present the color line consists of two yellows, a red and a blue which can be blended to yield a rainbow of shades all of which are compatible with both polyether and polyester systems.
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