Blue azo dyestuff mixture for strong blue color on hydrophobic fibers
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United States of America Patent
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Dec 10, 1991
Grant Date -
N/A
app pub date -
Mar 5, 1990
filing date -
Mar 15, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The dyestuff mixture contains at least one dyestuff of the formula I ##STR1## and at least one dyestuff of the formula II ##STR2## wherein X and Y denote chlorine or bromine, R.sup.1 and R.sup.5 denote methyl or ethyl, R.sup.2 and R.sup.6 denote methyl, ethyl, n-propyl or i-propyl and R.sup.3, R.sup.4, R.sup.7 and R.sup.8 denote, for example, C.sub.1 - to C.sub.11 -alkyl, in the weight ratio of I:II=(5 to 95):(95 to 5), and is, for example, outstandingly suitable for dyeing synthetic fibres.
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