Heat-stable encapsulated pigments
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United States of America Patent
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Jun 11, 2013
Grant Date -
Dec 23, 2010
app pub date -
Oct 15, 2007
filing date -
Oct 25, 2006
priority date (Note) -
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Abstract
Engineering plastics, especially polyamide, are coloured with improved fastness and stability properties using pigment compositions comprising an organic pigment wholly overlaid with a crosslinked (meth)acrylic resin or copolymer thereof. Preference is given to the use of diketopyrrolopyrrole, azo, pteridine, isoindoline and isoindolinone pigments. Processes for the preparation of the pigment compositions are also claimed.
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