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Патент USA US2125902

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1 *Patented Aug. 9, 1938
v - 2,125,902
UNITED STATES‘ PATENT OFFICE
2,125,902
I
TREATMENT OF ARTIFICIAL TEXTILE AND
'
LIKE MATERIALS
I
George Holland Ellis and Ernest William Kirk,
Spondon, near Derby, England, assignors to
Celanese Corporation of America, a corporation '
of Delaware
No Drawing. Application-September 18, 1935,,
Serial No. 41,099. In Great Britain September
28, '1934
6 Claims.
This invention relates to improvements in the
(01. 8-5)
potassium hydrogen tartrate and phthalimide.
treatment of textile or like materials, and par
Preferably the compounds employed according to
ticularly to improved methods for the production
the present invention are vsubstantially non
volatile under the conditions to which the artifl
' of a scroop ?nish on artificial yarns, fabrics and
similar materials, especially those containing cel
lulose acetate or other organic derivative of
cial materials may be exposed.
'
Other acidic compounds which may be em
‘ ployed with advantage in the process of the in
The usual method for the production of a vention are complex salts of acid reaction formed
scroop ?nish on arti?cial silk materials comprises ’ from‘ poly-basic acids, particularly aliphatic acids.
10 a treatment with oil or soap;and with an organic for example those referred to above, and 10
acid, for example acetic acid or formic acid. We amphotericv oxides, for example oxides of~ tita
vcellulose.
.
Y
method is to deposit on the materials an acid‘
nium, tungsten, molybdenum, aluminium and
tin.. The complex compounds employed should
compound obtainable by reacting upon a poly
preferably have an acidic reaction in aqueous
basic acid withv abasic substance.
solution, and it has been found that potassium
titanium oxalate is particularly suitable. The
methods and conditions of application of this
type of scrooping agent are similar to those de
scribed above in connection with the ‘acidic
have now found that a much more advantageous
According
therefore to the present invention a scroop effect
is imparted to arti?cial yarnsHfabrics and like
products by such treatment.‘
The process of the invention enables a more
I, 20; pronounced and more permanent scroop effect
to be obtained than is possible with formic or
derivatives of poly-basic acids.
‘
\
,
20
v'I'he treatmentwith the compounds of the'pres
ent invention may, ifdes'ired, be combined with
over, dyeings with certain dyestuffs, particularly a treatment with olive oil or other suitable oil or
~those of the 1.4-diamino anthraquinone type, ‘ with soap as inthe case of the ‘known scrooping .
_ acetic acid.‘ No soap or oil is necessary.
More
25 for example, l.4~di(methylamino) anthraquinone,
l-amino-il-methylamino‘
anthraquinone
and
processes.
a
'The production of a scroop ?nish according'to
I
25
1.4.5.8.-tetra-amino anthraquinone, on materials L the present invention may be carried out by im
a
to, which 'a scroopjhas been imparted by the mersingthe materials in. a solution of the com
' pound employed'for a suitable period of time, for
process of the invention_are much more perma
nent" to light than are similar dyeings on mate-. example 15-30 minutes, at normal temperatures 30
rials treated with organic acids. This is of par
or somewhat increased temperatures, for example
ticular importance in connection with cellulose 30, 40 or 45° C., then removing the materials and
expressing excess liquid so that the materials re
‘ ' acetate and other organic derivatives of cellu
lose, since the most important blue dyestuffs for tain an amount of solution equal to about half
,
,
35 such materials are of the type referred to. The to twice their weight and drying.
35
The acidic compounds may be used in anysuit
invention includes the production of dyed mate
rials having a scroopx?nish, particularly mate
able concentration. In general concentrations
rials having a basis of organic esters of cellulose between 1 and 10 grams per litre, and particularly
dy‘id with dyes of the 1.4-amino anthraquinone between 2 and v5 grams per litre will be found
ser es.
,
»
-
The acidic compounds employed according to
' suitable.
When water-soluble compounds -are ‘employed
40
for the scrooping process they may subsequently
‘the present invention may be derivatives of poly
baslc acids, and particularly of' poly-basic ali-' ‘ be converted into water-insoluble compounds, for
phatic acids, which still contain at least one free example by treatment’ with solutions of salts of
acidic grouping, for example acid salts of oxalic, calcium, barium or other suitable metals in order 45
tartaric, citric and other poly-basic aliphatic to improve the permanency of the ?nish. Alter
acids, particularly with sodium, potassium or natively, water-insoluble compounds may be
other metals of the alkalic or alkali earth groups,
,or they may be derivatives of acids in which all
50 the hydrogen atoms of the acidic groupings
have been replaced by a group or groups which
' themselves contain acidic hydrogen. Examples
of such compounds are the imides of oxalic, ,suc-'
cinic' and otherv poly-basic acids’. Compounds
55 which have been found particularly valuable are
employed, _e. g. in solution in a suitable solvent
such as alcohol.
-
The following examples illustrate the inven 50
tion:—-
'
‘ ‘Example 1
A knitted fabric of cellulose acetate yarns is
drawn slowly through ‘a solution containing 5
_
19,125,902
2
grams per litre of potassium hydrogen tartrate.
After treatment, the fabric is allowed to drain
and is centrifuged, so that it retains approxi
mately half its weight of the solution; it is then
the whole of said products an acid compound ob
tainable by reacting upon a carbon-containing
polybaslc acid with a basic substance, and subse-_
quently dyeing the material with a dyestu?? of the
dried and ?nished as desired.
1.4-diamino-‘anthraquinone type.
-
_,
Example 2
A fabric, as in Example 1, is similarly treated,
but using a solution of 2 grams per litre of potas
10 sium titanium oxalate.
Example 3
A fabric woven from cellulose acetate staple
fibre yarn is treated with a solution of 5 grams
15
per litre of phthalimide. Hydroextractlon by suc
tion follows,‘so that the fabric contains about
‘80% of its own weight of- the liquor. It is then
dried and otherwise treated as required.
In these examples instead of a fabric of cellu
lose acetate, fabrics or yarns of other artificial
material such as cellulose propionate, cellulose
acetate propionate, cellulose butyrate, cellulose
acetate nitrate, ethyl cellulose, benzyl cellulose,
or regenerated cellulose of the viscose or cupram
monium kind may be treated.
There may also be employed instead of the spe
ciilc compounds described. in these examples,
other acid compounds obtainable by reacting
upon a poly-basic acid with a basic substance, for
example potassium hydrogen citrate or sodium
bicarbonate.
The process of the present invention isparticu- '
larly valuable in the treatment of arti?cial ma
,\ terials having a basis of cellulose acetate, but it
35
may also be employed with arti?cial materials
containing other organic derivatives of cellulose,
2. Process for the production of dyed arti?cial
materials having an enhanced permanency to
light, which comprises imparting a scroop effect
to arti?cial yarns, fabrics and like products hav
ing a basis of cellulose acetate by depositing on 10
the whole of said products a salt of acid‘reaction
containing an alkali metal, a heavy metal and a
polybasic organic acid radicle, and subsequently
dyeing the material with a dyestuif of the 1.4;
diamino-anthraquinone type.
15
3. Process for the production of dyed arti?cial
materials having an enhanced permanency to
light, which comprises imparting a scroop effect
to artificial yarns, fabrics and like products hav
ing albasis of cellulose acetate by depositing on 20
the whole of said products an acid tartrate of an
alkali metal, and subsequently dyeing the mate
rials with a dyestu? of the 1.4-diamino-anthra
quinone type.
4. Process for the production of dyed artificial 25
vmaterials having an enhanced permanency to
light, which comprises imparting a scroop e?ect
to artificial yarns, fabrics and like products hav
ing a basis of cellulose acetate by depositing on
/the whole of said products potassium titanium 30
oxalate, and subsequently dyeing thematerials
with a dyestuif of the 1.4-diamino-anthraquinone
type.
5. Process for the production of dyed artificial
materials having an enhanced permanency to
light, which comprises imparting a scroop effect
e. g. cellulose propionate, butyrate, nitro-acetate, . to arti?cial yarns, fabrics and like products hav
and acetate-propionate, and‘ other esters and
mixed esters of cellulose, cellulose ethers and
40
mixed ethers, e. g. methyl, ethyl and butyl cellu
lose, and cellulose ether-esters, e. g. ethyl cellu
lose acetate and oxy-ethyl cellulose acetate. It
ing a basis of cellulose acetate -by depositing on
the whole of said products an im'ide of an organic‘
polybasic acid, and subsequently dyeing the ma
terials with a dyestuif of the lA-diamino-anthra
quinone type.
'
I
.
.
is also applicable to the treatment of other-textile” ‘ 6. Dyed arti?cial yarns, fabrics andlike mate
materials, e. g. natural silk and artificial mate
rials having an enhanced permanency to light
rials containing regenerated cellulose.
'
and a scroop finish due. to the presence of an 45
What we claim and desire to secure by Letters
Patent is:-—
-
,
1. Process for the production of dyed arti?cial
materials having an enhanced permanency to
light, which comprises imparting a scroop effect
50 to artificial yarns, fabrics and like products hav
ing a basis of cellulose acetate by depositing on
acid compound obtainable by reacting upon a
carbon-containing polybasic acid with a basic
substance and dyed with a dyestui’f of the 1.4
diamino anthroquinone type.~
GEORGE HOLLAND ELLIS.
ERNEST WILLIAM KERK.
50
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