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Патент USA US2131320

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Patented Sept. 27, 1938
_ v2,131,320
UNITED STATES PATENT ‘OFF-ICE‘
PRINTING WITH MORD‘ANT DYESTUFFS
Emil Gubler, Basel, Switzerland, assignor to the
?rm Durand & Huguensin S. A. Basel, Switzer
land
No Drawing. Applicatio11 February 2, 1937, Se
rial No. 123,726. In Germany February 11,
1936
(Cl. 8-72)
The following examples illustrate the inven
In the U. S. patent application Ser. No. 716,001
tion:
are described processes for printing with mordant
The following printing pastes are prepared:
dyestuffs (chrome dyestuffs) on fabrics of ani
7 Claims.
mal ?bres, namely natural silk, and on fabrics of
regenerated cellulose such as viscose arti?cial
silk, cuprammonium arti?cial silk and so on, in
which the printing pastes used contain the mor
dant dyestuff, gum arabic thickening and a chro
mium mordant, having Cr in the cation in the
presence of a lactate group. The principal ad~
vantage of the processes is to be found in the
fact that the soft feel and the lustre of the ?bre,
which in the absence of the lactate group, owing
to coagulation of thearabic gum thickening in
presence of the chromium mordant, would suffer,
are retained. According to a particularly ad
vantageous form of the processes chromium lac
tate is used.
50
The processes may also be com
Example ___________________________________ __
l
2
3
Ohromocitronine R (Schultz, Farbsto?tabel- Grams Grams Grams
tabellen 7th Edn, N0. 999) ______________________ -l
Dyestuil according to Example 1 of German
Speci?cation No. 1156234.. _
_.
Water ___________ __
_____ __
Phenol _ _ _ _ _ . l _ _ _
alcohol _ _ _ _ _
_ _ _ _ _ _ _ _ _
____ __
~
232
Formic acid (807)
Furfuryl
30
l. ____________ __
30
192
152
30
____ .l
_ _ l _ _ _ _
_ _ . _ _ __
_ _ _ _ _ _ _
_ _ _ _ _ __
30
10
Sodium tartrate cryst __________ __
30
30
30
Gum arabic thickening (1 : 1)_____
Chromium lactate (14.7% OM03).
610
38
610
‘38
610
38
60
60
100
10
____ __
1, 000' 1, 000
1, 000
Urea ___________________________ _.
__
25% solution of hydrosulphite NF ________ __'_ ______ __'
bined with advantage with the process of U. S.
The paste is printed on natural silk or viscose 20
Patent No. 1,848,589, according to which urea is
arti?cial silk, and the material is steamed for 45
also used in the printing paste.
minutes, then washed with cold water and dried.
According to the hitherto usual procedure, af
ter the prints thus prepared have been steamed There are obtained respectively yellow, blue and
they must be washed ?rst with cold ‘Water and orange prints whilst the ?bre has an unobjec
25
then with lukewarm water at about 40-50“ C. in tionable soft feel.
In the case of Example 2 the duration of the
order that the, ?bres may have the desired soft
steaming can be appreciably shortened by in
feel. This procedure involves certain disad
vantages. For example, if basic dyestuifs are creasing the quantity of urea to 100 grams.
Sodium lactate or sodium glycollate can be
printed on the material together with the chrome
dyestuffs, the prints of the basic dyestuffs are used instead of sodium tartratein the foregoing 30
damaged by the treatment with lukewarm water examples with similar effect.
The invention may also be applied in printing
and bleed. Moreover, the apparatus necessary
fabrics of other artificial silks, such as fabrics‘
for the treatment is not available in all silk print
of cuprammonium arti?cial silk.
ing works.
What I claim is:The present invention relates to an improve
1. In a process of steam printing with chro
ment whereby the treatment with lukewarm wa
ter is rendered unnecessary, and a completely mium mordant dyestuffs on lustrous ?bres, in
cluding natural silk and regenerated cellulose
soft feel of the ?bres is attained by simply wash
ing the printed material with cold water after ?bre, such as viscose or cuprammonium arti?cial
steaming. For this purpose in accordance with silk, an improvement consisting in printing the 40
the invention there is added to the printing paste material with a paste containing the mordant
sodium tartrate or, in general, an alkali salt of dyestuff, a gum arabic thickening, a chromium
an aliphatic oXy acid such as tartaric acid, lactic _ mordant having Cr in the cation in the presence
of a lactate group, and an alkali salt of an ali
acid, glycollic acid and so on.
If, as has hitherto been preferable, chromium' phatic hydroxy acid, thereby obviating the
lactate is used in the known process the present formation of a harsh feel, uneven dyeing and loss
invention may be carried into effect by adding of lustre on the imprinted parts.
2. In a processor steam printing with chro- '
an alkali lactate, alkali tartrate or alkali glyco1~
late to the printing paste in addition to chromium mium mordant dyestuffs on lustrous ?bres, in
cluding natural silk and regenerated cellulose V
lactate.
2
2,131,320
?bre such as viscose or cuprammonium arti?cial
silk, an improvement consisting in printing the
material with a paste containing the mordant
dyestu?, a gum arabic thickening, chromium
lactate, and an alkali salt of an aliphatic hy
droxy acid, thereby obviating the formation of
a harsh feel, uneven dyeing and loss of lustre on
the imprinted parts.
3. As a new composition of matter, a printing
paste containing a mordant dyestu?, a gum ara
bic thickening, a chromium mordant having Cr
in the cation in the presence of a lactate group
and an alkali salt of an aliphatic hydroxy acid.
4. A printing paste containing a mordant dye
stu?, a gum arabic thickening, chromiumlactate
and an alkali salt of an aliphatic hydroxy acid.
5. A printing paste containing a mordant dye
stuif, a gum arabic thickening, chromium lactate
and sodium tartrate.
6. A printing'paste containing a mordant dye
stuff, a gum arabic thickening, chromium lactate
and sodium glycollate.
7 . A printing paste containing a mordant dye
stuff, a gum arabic thickening, chromium lactate
and sodium lactate.
-
EMIL GUBLER.
10
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