Anthraquinone dyes, their preparation and their use
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United States of America Patent
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Oct 4, 1994
Grant Date -
N/A
app pub date -
Nov 30, 1993
filing date -
Dec 3, 1992
priority date (Note) -
Expired
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Abstract
Anthraquinone dyes of the formula ##STR1## in which A, R.sub.1, R.sub.2, R.sub.3 and n are as defined in claim 1, produce dyeings having good fastness properties on nitrogen-containing or hydroxyl-containing fibre materials.
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