Anthraquinone dyes, preparation thereof and use thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 15, 2005
Grant Date -
Mar 4, 2004
app pub date -
Dec 13, 2001
filing date -
Dec 22, 2000
priority date (Note) -
Expired
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Abstract
The present invention relates to anthraquinone dyes of the formula (I) where R1 is hydrogen, R2 is hydrogen or CO—C2C6alkyl moiety may be substituted by carboxyl, or is (II) wherein R6 is hydrogen, C1-C4alkyl, hydroxyl, carboxyl or halogen, R7 is hygrogen, C1-C4alkyl or halogen and R8 is hydrogen or C2-C3alkyl or when R4 is halogen R8 ? may be methyl or halogen R3 is hydrogen or halogen, R4 is hydrogen or halogen and n is (0), (1) or (2), with the proviso that R3, R4, R6, R7 and R8 are not all hydrogen at one and the same time, processes for their preparation and their use for dyeing or printing hydrophobic fiber materials or for preparing colored plastics or polymeric color particles. ##STR1##
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