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Патент USA US2118192

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2,118,192
Patented May 24, 1938
UNITED STATES PATENT OFFICE
2,118,192
MIXTURES OF DYESTUFFS
Robert Grether, Wilhelmsbad, near Hanan-on
the-Main, Germany, assignor to General Ani
line Works, Inc., New York, N. Y., a corpora
tion of Delaware
No Drawing. Application July 16, 1936, Serial
No. 90,893. In Germany August 6, 1935
4 Claims. (Cl. 8—-6)
My present invention relates to new mixtures Which appertains to the isodibenzanthrone series.
comprising dyestu?s of at least one member of
the group consisting of the dibenzanthrone and
isodibenzanthrone series and of dyestuffs of a
5 member of the group consisting of alkaline con
densation products of l-(Bzi-benzanthronyl ami
no)—acylaminoanthraquinones (of. U. S. Patents
Nos. 1,850,562, 1,877,947, 2,022,240 and 2,040,380)
and of alkaline condensation products of poly
10
anthraquinonylaminobenzanthrones, containing
one anthraquinonyl radicle in the Bzi-position,
of. British speci?cation No. 337,741.
The dyeings and prints obtained with the above
mixtures yield full black shades of an excellent
15 fastness, particularly to washing and boiling so
dium carbonate solution, and to an increased
degree to light.
-
The shade may be varied by adding further
dyestuffs. The processes of dyeing and printing
20 using the above mixture of dyestuffs are carried
out in the manner customary for vat dyestuffs.
Further, in accordance with my present inven
tion mixtures of the dyestuffs of the above types
may be produced in the dyeing liquor or printing
10 U! paste and the dyeing or printing likewise e?ected
in the customary manner.
In order to further illustrate my invention the
following examples are given, the parts being by
weight and all temperatures in degrees centi
30 grade. However, I wish it to be understood that
my invention is not limited to the particular
products
therein.
35
nor
reaction
conditions mentioned
Example 1
3 parts of the dyestuff obtained by acting with
sulfuiylchloride on the benzoylated alkaline con
densation product of Bzi-benzanthronyl-l-ami
4
no-5-aminoanthraquinone (of. U. S. Patent No.
2,022,240) are mixed with 2.3 parts of 2.2'-Bz-1'
dibenzanthrone. On dyeing 100 parts of cotton
with this mixture a bright bluish black shade is
On dyeing 100 parts of cotton with this mixture
a reddish black shade is obtained.
Example 4
With a mixture of 3.6 parts of the dyestuff
cited in Example 1 and 1.5 parts of tribromoiso
dibenzanthrone on 100 parts of cotton a brigh
neutral black shade is obtained.
by acting with bromine on dibenzanthrone in the
presence of chlorosulfonic acid on 100 parts of
cotton a very full greenish black shade is ob
tained.
Example 6
When dyeing from the vat 100 parts of viscose 20
arti?cial silk with a mixture of 2 parts of the
olive dyestuff obtained by benzoylating the al
kaline condensation product of Bz1—benzanthron
yl-1-amino-5-aminoanthraquinone and of 1.5
parts of 2.2’-Bz-1’-dibenzanthrone a bright bluish 25
black shade is obtained whereas a mixture of 2.3
parts of the olive and 1.3 parts of the blue dye
stuff yields a full greenish black shade.
Example 7
3.6 parts of the alkaline condensation product
of di- (l'-anthraquinonyl) -6-Bz1-diaminobenzan
throne are mixed with 1.8 parts of 2.2'-Bz-1'
dibenzanthrone. When dyeing 100 parts of cot
ton With this mixture a violet black shade is 35
obtained.
Example 8
When dyeing 100 parts of cotton with a mix
ture of 3.6 parts of the dyestuff cited in Example 7
and of 0.7 part of tribromoisodibenzanthrone a
neutral black shade is obtained.
45
are mixed with 2.3 parts of 2.2'-Bz-1’-dibenzan
throne and 0.5 part of the bluish red dyestuff
obtained by introducing two ethyl groups into di
pyrazolanthrone. On dyeing 100 parts of cotton
50
with this mixture a bright violetish black shade
is obtained.
Example 3
3.9 parts of the dyestuff cited in Example 1
are mixed with 2.1 parts of the dyestu?' indan
55 threne-brilliant violet RR (Schultz, No. 1,265),
0
Example 9
obtained.
Example 2
2.7 parts of the dyestu? cited in Example 1
'
10
Example 5
With a mixture of 4.2 parts of the dyestuff
cited in Example 1 and 3.6 parts of the blue
dyestuii of the dibenzanthrone series obtained
When dyeing 100 parts of cotton with a mix
ture of 3.2 parts of the dyestufi cited in Example 7 45
and of 1.6 parts of the blue dyestu? obtained
by acting with bromine on dibenzanthrone in
the presence of chlorosulfonic acid a bluish black
shade is obtained.
50
I claim:
1. Mixtures of dyestuffs comprising dyestuffs
of at least one member of the group consisting
of the dibenzanthrone and isodibenzanthrone
series, and of dyestuffs of a member of the group
consisting of alkaline condensation products of CH
2,118,192
1 -(Bz1-- benzanthronylamino) -acylaminoanthra
benzanthro'ne', which mixture yields bright bluish
quinones and of alkaline condensation products black shades on cotton.
of polyanthraquinonylaminobenzanthrones, con
3. A mixture of 2 parts of the olive dyestuff
taining one anthraquinonyl radicle in the Bz1
obtained by benzoylating the alkaline condensa
position, which mixtures yield on dyeing and tion product of Bz1-benzanthronyl-1-amino-5
printing vegetable ?bers therewith full black aminoanthraquinone and 1.5 parts of 2.2’-Bz-1’
shades of an excellent fastness, particularly to dibenzanthrone, which mixture yields full green
washing and boiling sodium carbonate‘ solutions, ish black shades on cotton.
and to an increased degree to light.
4. A mixture of 3.6 parts of the alkaline con
10
2. A mixture of dyestuffs consisting of 3 parts densation product of di-(1’-anthraquinony1)-6 10
of the 'dyestu? obtained by acting with sulfuryl
Bz1-diaminobenzanthrone and 1.8 parts of 2.2’
chloride on the benzoylated alkaline condensation Bz-l'-dibenzanthrone, which mixture yields vio
product of Bzi-benzanthronyl-1-amino-5-amino
anthraquinone and 2.3 parts of 2.2'-Bz-1’-di
letish black shades on cotton.
7
ROBERT GRETHER.
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