IMPROVEMENTS IN THE PREPARATION OF ANILINE SOLUTIONS FOR DYEING AND PRINTING TEXTILE AND OTHER MATERIALS
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by William Robert Lake at the Office of
the Commissioners of Patents on the 6th January 1881. A communication
from abroad by Nicolas Charles Armand and Jacques Eugene Berton, both of
Paris, France, Dyers and Cleaners.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN THE PREPARATION OF
ANILINE SOLUTIONS FOR DYEING AND PRINTING TEXTILE AND OTHER MATERIALS."
A communication from abroad by Nicolas Charles Armand and Jacques Eugene
Berton, both of Paris, France, Dyers and Cleaners.
This Invention relates to aniline solutions for cold dyeing or printing in which
no water is used, benzine or any kind of mineral or vegetable essence being
employed, as hereinafter described.
The said Invention consists chiefly in the means I employ for rendering aniline
colouring matters, or any matters derived therefrom, soluble in the said benzines or
essences.
Hitherto no one has succeeded, even by using alcohol, in dissolving in benzine
and mineral essences the coloring matters derived from tar, for instance, and
according to the present Invention to obviate this difficulty which has hitherto
been considered insuperable I use as an intermediary agent a special solvent which
possesses the property of being capable of effecting the desired result. This solvent
consists of two series of distinct elements, viz., of vegetable oil or of fat and the
following chemical compounds, that is to say:-Either acetic acid or hydrochloric
acid, sulphuric ether, volatile alkali (ammonia), and potash. These elements are
mixed in the following proportions for each hundred parts, that is to say :-
Oil (olive oil for instance), or fat (say lard) 45 parts.
Acetic acid or hydrochloric acid
-
-
25
"
Volatile alkali
Potash
7
"
16
"
These proportions may however be varied within certain limits according to the
color or shade that is to be produced. This solvent having been prepared in a
suitable vessel on a slow fire I add to the same the required aniline dye in the
quantity requisite to produce the desired shade. When the dye has thus been

page_text: obtained and is perfectly cooled it is put into a quantity of benzine or essence, such
quantity being determined according to that of the fabrics or materials to be dyed.
The bath of colored benzine being thus prepared I immerse the fabrics or other
materials or articles therein and stir till the desired shade is attained. The articles
or materials thus dyed are dried by the processes ordinarily used when cleaning is
effected by means of benzine, or what is known as cleaning by the dry process.
By means of this Invention silk or cotton, or silk and cotton combined, can be
dyed with aniline colors and in all shades, either in skeins or when woven into
fabrics, or made up into wearing apparel, whatever their shape, without injury to
such articles, and this is an advantage not attainable by any of the processes
hitherto in use for similar purposes. Articles of furniture, fancy-goods, skins,
gloves, and hosiery may also be dyed to any shade or color, according to this
Invention; and the said solutions are also applicable for printing upon cotton,
silk, or mixed fabrics.