A New or Improved Method of Dyeing Aniline Black.
Year: 1889

page_text: Date of Application, 4th Dec., 1889
Complete Specification Left, 17th July, 1890-Accepted, 23rd Aug., 1890
PROVISIONAL SPECIFICATION.
A New or Improved Method of Dyeing Aniline Black.
I LUDWIG SCHREINER of Stuttgart in the Empire of Germany, Doctor do hereby
declare the nature of this invention to be as follows:-
The improved method of dyeing aniline black consists in employing a mixture of
the solution of aniline salts with a solution of such matters as coagulate immediately
into an insoluble combination with the reagents especially with chromic metallic salts
usually employed for the oxydation of the aniline and so carry along the aniline salt
and secure it on the staple.
Such properties are shown by the so-called proteine compounds albumen and
caseïne as well as their kindreds, the glutinous liquids namely glutine and chondrine.
A 10% solution of glue is prepared by stirring and boiling and 20% of aniline
hydrochlorate added. The mixture will become clear at once and remain quite thin
and flowing in a cold atmosphère.
The matters to be dyed are now soaked in this solution, then they are either pressed
or swung and treated either at once, or after a slight drying with a solution of chromic
acid or its salts and salts of the oxides of copper or iron with or without addition
of oxydising materials such as combinations of oxygen with chlorine and manganese
until the fuel development of the analine black.
If caseïne is to be used as a coagulating body a 5% solution of the same is made
by boiling with aniline salt and free aniline prepared. When using albumen from
blood or eggs the operation of dissolving and soaking should naturally be performed
in a cold atmosphere.
Dated this 4th day of December 1889
HERBERT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
A New or Improved Method of Dyeing Aniline Black.
1 LUDWIG SCHREINER of Stuttgart in the Empire of Germany Doctor do hereby
declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:
The improved method of dyeing aniline black consists in employing a mixture of
the solution of the aniline salt with a solution of such matters as coagulate imme-
diately into an insoluble combination with the reagents, especially with chromic
metallic salts usually employed for the oxydation of the aniline and so carry along
the analine salt and secure it on the staple.
Such properties are shown by the so-called proteine compounds albumen and caseine
as well as their kindreds the glutinous bodies, glutine and chondrine.
As an example:-A 10% solution of glue is prepared by stirring and boiling
and 20% of aniline hydrochlorate is added thereto. The mixture will become clear
at once and remain quite thin and flowing in a cold atmosphere.
In this solution are now soaked the matters to be dried. The excess of liquor
having been pressed out of them they are then treated either at once or after a slight
drying with a solution of chromic acid or its salts, and salts of the oxides of copper
or iron with or without addition of other oxydising materials such as combinations
of oxygen with chlorine and manganese until the aniline black is fully developed. If
caseine is to be used as a coagulating body a 5% solution of the same is prepared

page_text: by boiling with aniline salt and free aniline. When using albumen from blood or
eggs the operation of dissolving and soaking should naturally be performed in a cold
atmosphere.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
The method of dyeing an aniline black, consisting in treating the matters to be
dried with a solution comprising the aniline salt and albumen, caseine or analogous
glutinous bodies and subsequent oxydation by compounds of chromium and chlorine
with metal salts.
1711
1000
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant