Dyes and Dye Mixtures for Dying Polymers, Method for the Production Thereof and Their Use
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United States of America Patent
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Issued Date -
Dec 18, 2008
app pub date -
Sep 26, 2006
filing date -
Oct 1, 2005
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Abandoned
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Abstract
The present invention relates to dyes of the general formula (1) where R.sup.1 to R.sup.12 and r are each as defined in claim 1, dye mixtures comprising more than one dye of the general formula (1), their preparation and their use for coloring polymers, particularly polyurethane and polyurethane foam.
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