close

Вход

Забыли?

вход по аккаунту

?

код для вставки
Patented ‘Oct. 22, 1946
2,409,980
UNITED STATES ‘ PATENT OFFICE
2,409,980
coMrosrrron FOR nIscnARoE PRINTING
Edgar C. Jensen, Rochester, Herbert G. Scull, New
York, and James G. McNally,
assignors to Eastman Kodak Rochester, N. Y.,
Company, Roch
ester, N. Y., a corporation of Ncw
Jerscy
No Drawing. Application August 28, 1943,
‘Serial No. 500, 410
9 Claims. (01. 8464)
zinc thiocyanate, potassium thiocyanate or thio
diglycol. In practicing our invention, it is ad
vantageous to prepare a paste containing salicylic
witn cotton, viscose and cuprammonium rayon.
It is known in the art of textile printing that
colored cellulose carboxylic ester fabrics will not
acid or a salt of salicylic acid, the sulfoxylate, a
swelling agent and a thickening agent. This
paste composition is then printed upon the fabric
'
with a dischargeable dye, and the
printed fabric subjected to the action of steam
?ned white, without the addition of a swelling
whereupon discharging takes place.‘
agent and a suitable catalyst.
The following examples will serve to illustrate
the manner of practicing our invention.
It is also well
Example 1
out, or “halo,” when subjected to a prolonged or
A 100% cellulose acetate satin material was
dyed a light brown with 0.5% Eastone Blue BB,
pressure steaming, suitable to destroy or perma
nently decolorize the dyed ground. It is also well
known that anthraquinone paste will speed up
the action of the above reducing agents, Within a
0.5% Eastone Orange 2R, and 0.125% Eastone
Red
R in the ‘ customary single bath method of
dyeing.
_20
The above fabric after drying was printed with
a paste made as follows:
Sodium formaldehyde sulfoxylate______lbs__ 3
Water _______________________ __'_____qts__ 1%
25 ~jThiodiglycol
tion of the sulfoxylates in a
anthraquinone paste.
_______________________ __qts__ 1/;
Supertex T-125 (solubilized gum karaya tex
tile gum; Jacques Wolf and Company)
qts__ 214/
Salicylic acid _______________________ __oz__ 8
manner similar to
However, hydroquinone
30
causes a tendering or weakening of the cellulose
ester ?bers. Therefore,‘the use of hydroquinone
'
The above paste was applied by a roller print
ing machine; the fabric was dried, and ‘aged for
3-6 minutes above 212° F. in the usual manner
from a commercial standpoint, to those
fabrics in which the inherent strength of the fab
rics is of no importance.
CO U!
We have now found that the above difficulties
can be overcome and the discharge printing of
textile materials comprising a cellulose carbox
salicylic acid or a salt of salicylic acid to acceler
ate the discharging action of the sulfoxylates. It
is, accordingly, an object of our invention to pro
vide a new method for discharge printing. A fur
ther object of our invention is to provide a new
composition for discharge printing. Other ob
jects will become apparent hereinafter.
40
Example 2
A fabric constructed of 50% cellulose acetate
rayon and 50% viscose rayon was
dyed a blue
shadeusing 2% of Eastone Blue BB based on the
weight
of
cellulose
acetate
and
45
1.6% of Pont
based on the v
In accordance with our invention, we effect the
discharge of dischargeable colors on textile ma
viscose rayon, using the customary
single bath method of dyeing. The above blue
terials comprising cellulose carboxylic esters with
aldehyde metal sulfoxylates, in the presence of
method using the following paste:
salicylic acid or a salt of salicylic acid. The dis
dyed sample was printed by the block screen
charge is advantageously effected in the presence
Potassium sulfoxylate formaldehyde___lbs__ 11/2
of a swelling agent, e, g. triethylene glycol, di
Thiodiglycol _______________________ __oz__
acetylethanolamine, propylene glycol, diethylene
glycol, sodium thiocyanate, calcium thiocyanate,
55 Supertex T-125 ____________________ __qts__ 21A;
Water ____________________________ __qts__ 1%
Salicylic acid _______________________ __oz__ 4
72,409,986
3
4
ning water, soaped lightly, rinsed, and dried. A
In the above examples, salicylic acid can be
replaced by its salts, such as its ammonium salt,
its sodium salt, its potassium salt or its calcium
salt, for example. In Example 3, the sodium
salt of salicylic acid is formed owing to the pres
clear, sharp White discharge was obtained on the
ence of the alkali.
, The fabric was printed, dried, and aged for
3—6 minutes in the usual manner that screen
printed vat colors are aged, rinsed well in run
blue material.
'
,
.
r
-
Our invention is directed especially to fabrics
comprising such cellulose carboxylic esters as
the hydrolyzed and unhydrolyzed cellulose ace
tates, cellulose propionates and cellulose bu
'
Example 3
A blue-dyed fabric like that described in Exam
ple 2 was printed by the roller printing method 10 tyrates, as well as the mixed cellulose esters,
using the following formula:
such as the hydrolyzed and unhydrolyzed cellue
Per cent
lose acetate-propionates and cellulose acetate
butyrates. All of these cellulose carboxylic esters
Algol Orange RFA Supra?x (0.1. No. 1217) _'_ 20
Vat paste _______________________________ __ 80 15 consist of a cellulose portion or radical and an
acid radical which contains from 2 to 4 carbon
The vat paste was made up as follows:
,
7 atoms.
What we claim as our invention and desire to
be secured by Letters Patent of the United States
British gum ________________________ __lbs__ 21/2 7
Wheat starch______________________ __lbs__
1/2
Water ____________________________ _v_qts__ 31/2 20 is:
1. A composition for discharge printing com
boiled for 1/2 hour,
The above, ingredients were
prising a formaldehyde metal sulfoxylate and a
substance selected from the group consisting of
the heat turned off, and 11/2 lbs. of sodium car
j'bonate, 1/2 lb. of salicyclic acid, and 8 oz. of thic
,diglycol were added. Stirring was continued
until foaming stopped. (Antifoam agents such
as octyl alcohol may be added.) Then 11/4= lbs.
of, sodium formaldehyde sulfoxylate was added.
salicylic acid and its salts.
I
.2. A composition for discharge printing com
prising formaldehyde sodium sulfoxylate and a
substance selected from the group consisting of
salicylic acid and its salts.
The fabric was printed, dried, aged 3—6 minutes
3.,A composition for discharge printing com
‘above 212° F. in the usual manner for printing
prising
a swelling agent for cellulose carboxylic
vat colors on viscose rayon or cotton fabrics. It 30
ester textile materials, 3, formaldehyde metal
was rinsed 1/2 minute in cold water and oxidized
sulfoxylate and a substance selected from the
group consisting of salicyclic acid and its salts.
4. A composition for discharge printing com
for 10 minutes with soap at 140° F., then rinsed
well and dried. A bright, well-de?ned orange
print was obtained on the blue ground.
35 prising 2. formaldehyde alkali metal sulfoxylate
Example 4
and salicyclic acid.
5. A composition for discharge printing com
A 100% acetate knit jersey material was dyed
prising formaldehyde sodium sulfoxylate and‘
'a tomato red shade with 1% Eastone Red R
in the customary manner, dried, printed, and
salicylic acid.
as in Example 1. A clear, well-de?ned 4.0 '6. A composition for discharge printing com
' processed
‘prising a formaldehyde alkali metal sulfoxylate,
white was obtained on the red ground.
normal zinc formaldehyde sulfoxylate and a sub
Example 5
stance selected from the group consisting of
‘ IA fabric constructed of 50% cotton and 50%
salicyclic acid and its salts.
-
spun acetate was dyed a yellow shade with 2% 45, 7. A composition for discharge printing com
Eastone Yellow: 3GM (Tennessee Eastman Cor
prising formaldehyde sodium sulfoxylate, normal
poration) based on the weight of the acetate,
zinc formaldehyde sulfoxylate and a substance
- {and-112% of Pontamine Fast Yellow 4GL (Pr. No.
53) . and 0.2% Pontamine Fast Yellow RL based
selected from the group consisting of salicylic
acid'and'
its salts.
8. A process
for
on the weight of the cotton. ‘The customary sin
'gle. bath method was employed in carrying out
the dyeing operations. The dried fabric was
, printed by the
block screen method using the
following printing paste:
ing a formaldehyde metal sulfoxylate and a sub
stance selected from the group consisting of
‘ salicyclic acid and its salts, and steaming ‘the
Normal zinc formaldehyde sulfoxylate_oz__ 12
.Sodium formaldehyde sulfoxylate_____oz__ 8
Thiodiglycol; ______________________ __oZ__
discharge printing of textile
materials comprising a cellulose carboxylic ester
comprising printing the textile material colored
with a’ dischargeable dye with a paste compris
8
printed fabric.
'
‘
p
-‘
91A composition‘ for discharge printing com
Water ___________________________ __qts__ 11/2
Supertex T-125 ___________________ __qts__ 21/2 60 ‘ prising normal zinc formaldehyde‘ sulfoxylate ‘and
a substance selected from the group consisting
salicyclic acid___; ____ -4 ___________ __oz__ 4
' of salicyclic acid and itsEDGAR
salts. C. JENSEN.
After printing, the fabric was dried, ‘aged above
212° F. for 6 minutes, washed, and dried.
A
‘ HERBERTG. SCULL.
'clear, ‘sharp’ white discharge ‘was obtained on
the yellow material.
65
JAMES G. MCNALLY.
Документ
Категория
Без категории
Просмотров
0
Размер файла
308 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа