Disperse dye mixtures which have a high degree of light fastness
View Patent ↗The present invention provides a blue dye mixture which contains the pigments represented by formulae [1], [2], [3], and [4] The present invention also relates to dye mixtures in which there are compounded therewith a yellow dye mixture and/or a red dye mixture. The invention further relates to a method of dyeing polyester-based fibers and dyed polyester-based fibers and dyed polyester-based fiber materials.
1. A blue colored dye mixture which contains
from 10 to 60 wt % with respect to the total pigment fraction of a blue pigment which is a mixture of the two isomers represented by structural formula (1)
wherein one of X 1 and X 2 represents NO 2 and the other represents OH,
from 60 to 10 wt % with respect to the total pigment fraction of a blue pigment represented by structural formula (2)
wherein R 1 represents —C 3 H 6 OCH 3 , —C 3 H 6 OC 2 H 5 or —C 3 H 6 OC 2 H 4 OCH 3 , and
from 10 to 30 wt % with respect to the total pigment fraction of the blue pigment which can be represented by structural formula (3)
2. A dye composition which comprises the blue dye mixture according to claim 1 , and a yellow dye mixture and/or a red dye mixture,
wherein
the yellow dye mixture contains from 25 to 75 wt % with respect to the whole pigment fraction of the yellow pigment represented by structural formula (5)
from 60 to 20 wt % with respect to the whole pigment fraction of the yellow pigment represented by structural formula (6)
and from 15 to 5 wt % with respect to the whole pigment fraction of the yellow pigment represented by structural formula (7)
Me represents CH 3 ,
and the red dye mixture contains from 30 to 60 wt % with respect to the whole pigment fraction of a red pigment represented by structural formula (8)
wherein R 4 represents a C 1 to C 3 alkoxy C 1 to C 3 alkyl group,
from 70 to 20 wt % with respect to the whole pigment fraction of the red pigment represented by the structural formula (9)
and from 0 to 20 wt % with respect to the whole pigment fraction of a red pigment represented by structural formula (10)
wherein R 5 represents a hydrogen atom, a chlorine atom or a bromine atom, or by the structural formula (11)
wherein one of R 6 and R 7 is a hydrogen atom and the other is hydroxyethoxyethyl, hydroxybutoxypropyl, acetoxyethoxyethyl or acetoxybutoxypropyl.
3. A method of dyeing polyester-based fibers which comprises contacting the fibers with the composition as claim in claim 2 .
4. A dyed polyester-based fiber material which has been dyed using the dye composition as claimed in claim 2 .
5. A method of dyeing polyester-based fibers according to claim 4 in which the polyester-based fibers are mixed fibers of different fineness.
6. A dyed polyester-based fiber material according to claim 5 in which the polyester-based fibers are mixed fibers of different fineness.
7. A dyed polyester-based fiber material according to claim 6 in which the polyester-based fibers are mixed fibers comprising polyester-based fibers which can be dyed with a cationic dye and regular polyester-based fibers.
8. A method of dyeing polyester-based fibers according to claim 5 in which the polyester-based fibers are mixed fibers comprising polyester-based fibers which can be dyed with a cationic dye and regular polyester-based fibers.
9. A method of dyeing polyester-based fibers which comprises contacting the fibers with the blue dye mixture as claimed in claim 1 with the fibers.
10. A dyed polyester-based fiber material which has been dyed using a blue dye mixture as claimed in claim 1 .
11. A blue colored dye mixture which consists essentially of
from 10 to 60 wt % with respect to the total pigment fraction of a blue pigment which is a mixture of the two isomers represented by structural formula (1)
wherein one of X 1 and X 2 represents NO 2 and the other represents OH,
from 60 to 10 wt % with respect to the total pigment fraction of a blue pigment represented by structural formula (2)
wherein R 1 represents —C 3 H 6 OCH 3 , —C 3 H 6 OC 2 H 5 or —C 3 H 6 OC 2 H 4 OCH 3 , and
from 10 to 30 wt % with respect to the total pigment fraction of the blue pigment which can be represented by structural formula (3)