IMPROVE- MENTS IN THE PRODUCTION OF COLOURING MATTERS
Year: 1881

page_text: LETTERS PATENT to Gerard Wenzeslaus von Nawrocki, Proprietor of the Firm
of J. Brandt and G. W. v. Nawrocki, of 124, Leipzigerstrasse, Berlin, German
Empire, Patent Agent, & Civil Engineer, for an Invention of "IMPROVE-
MENTS IN THE PRODUCTION OF COLOURING MATTERS." A communication
from Jean Rodolphe Geigy, of the City of Basel, Switzerland.
PROVISIONAL SPECIFICATION left by the said Gerard Wenzeslaus von
Nawrocki at the Office of the Commissioners of Patents on the 22nd March
1881.
i
GERARD WENZESLAUS VON NAWROCKI, Proprietor of the Firm of J. Brandt
and G. W. v. Nawrocki, of 124, Leipzigerstrasse, Berlin, German Empire, Patent
Agent & Civil Engineer. "IMPROVEMENTS IN THE PRODUCTION OF COLOURING
MATTERS." [A communication from Jean Rodolphe Geigy, of the City of Basel,
Switzerland.]
This Invention relates to the production of a series of colouring matters available
for commercial purposes by the combination of amidoazobodies or their substitution
products with bodies of the phenole or the chinon classes, or their substitution
products, either alone or in the presence of a condensing medium. Under
amidoazobodies are to be understood the compounds produced by the combination
of diazobodies with amido bodies, for example,-
1. Amidoazobenzol from diazobenzol and aniline, amidoazonaphthaline from alpha
or beta-diazonaphthaline and alpha or beta naphthylamino.
2. Compound amidoazobodies, such as combinations of diazobenzol with toluidine
xylidine, alpha or beta naphthylamine, &c., diazotoluol with aniline xylidine,
naphthylamine &c., alpha or beta diazonaphthaline with aniline, toluidine
xylidine, &c.
3. The substitution products of the above named amidoazobodies produced,
a. By diazotising substituted amines, and combining the resulting diazobodies

page_text: with amines, as, for instance, diazo nitrobenzol (from nitroaniline), diazochlorbenzol
(from chloride of aniline) with aniline toluidine naphthylamine, &c.
b. By substitution of the completely formed amidoazobodies.
Under bodies of the phenole class are to be understood phenole and its
homologues, the dioxybenzoles, trioxybenzoles, oxybenzoic acid, &c.; the naphtholes, &
dioxynapthaline, &c., as also the substitution products of these bodies.
Under chinon-like bodies are to be understood benzochinon, toluchinon, and their
homologues, as also naphtochinon, anthrachinon, phenantrechinon, &c.; also the
intermediate bodies between the phenoles and chinones; as type of which may be
taken chinhydron; lastly, also the substitution products of the chinones and 1
chinhydrones.
For the condensing medium may serve known substances that abstract water, as,
for instance, sulphuric acid, muriatic acid, glycerine, chlorides of iron, zinc, or
aluminium, or other metallic salts.
The colouring matters are produced simply by heating an amidoazobody with a
body of the phenole or chinon class, either alone or with a condensing medium,
until the reaction takes place, mostly with frothing, and samples of the mass show
the complete conversion of the components into the said colouring matters. In this
way are produced, according to the substances used, red, yellow, green, blue, violet,
grey, or brown colouring matters, which are soluble either in water or in alcohol.
In the latter case they may be converted into their sulpho acids by means of
sulphuric acid, so as to be soluble in water, if they are not directly applicable as
alcoholic solutions.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Gerard Wenzeslaus von Nawrocki in the Great Seal Patent Office on the
16th September 1881.
GERARD WENZESLAUS VON NAWROCKI, Proprietor of the Firm of J. Brandt and
G. W. v. Nawrocki, of 124, Leipzigerstrasse, Berlin, German Empire, 'Patent
Agent & Civil Engineer. "IMPROVEMENTS IN THE PRODUCTION OF COLOURING
MATTERS." A communication from Jean Rodolphe Geigy, of the City of Basel,
Switzerland.
This Invention relates to the production of a series of colouring matters available
for commercial purposes by the combination of amidoazobodies or their substitution
products with bodies of the phenole or the chinon classes, or their substitution
products, either alone or in the presence of a condensing medium. Under
amidoazobodies are to be understood the compounds produced by the combination
of diazo bodies with amido bodies, for example,-
1. Amidoazobenzol from diazobenzol and aniline, amidoazonaphthaline from alpha
or beta diazonaphthaline and alpha or beta naphthylamine.
2. Compound amidoazobodies, such as combinations of diazobenzol with toluidine,
xylidine, alpha or beta naphthylamine, &c.; diazotoluol with aniline, xylidine,
naphthylamine, &c.; alpha or beta diazonaphthaline with aniline, toluidine,
xylidine, &c.
3. The substitution products of the above named amidoazobodies produced,
a. By diazotising substituted amines, and combining the resulting diazobodies
with amines, as, for instance, diazonitrobenzol (from nitro aniline), diazochlorbenzol
(from chloride of aniline) with aniline toluidine naphthylamine, &c.
b. By substitution of the completely formed amidoazobodies.
Under bodies of the phenole class are to be understood phenole and its homologues,
the dioxybenzoles, trioxybenzoles, oxybenzoic acid, &c., the naptholes, dioxynaph-
thaline, &c., as also the substitution products af these bodies.
Under chinon-like bodies are to be understood benzochinon, toluchinon, and their
homologues, as also naphtochinon, anthrachinon, phenantrechinon, &c.; also the
intermediate bodies between the phenoles and chinons; as type of which may be
taken chinhydron; lastly, also the substitution products of the chinones and
chinhydrones.
For the condensing medium may serve known substances that abstract water, as,
for instance, sulphuric acid, muriatic acid, glycerine, chlorides of iron, zinc, or
aluminium, or other metallic salts.
The colouring matters are produced simply by heating an amidoazobody with a
body of the phenole or chinon class, either alone or with a condensing medium,
until the reaction takes place, mostly from frothing, and samples of the mass shew
the complete conversion of the components into the said coloring matters. In this
way are produced, according to the substances used, red, yellow, green, blue, violet,
grey, or brown colouring matters, which are soluble either in water or in alcohol.
In the latter case they may be converted into their sulpho acids by means of
sulphuric acid, so as to be soluble in water, if they are not directly applicable as
alcoholic solutions.
Having thus described the nature of this Invention, and in what manner the
same is to be performed, as communicated to me by my correspondent, I claim,-
The production of coloring matter by the action of amidoazobodies, or their

page_text: substitution products, upon bodies of the phenole or chinon class, or their substitution
products, either alone or in the presence of condensing media.
In witness whereof, I, the said Gerard Wenzeslaus von Nawrocki, have
hereunto set my hand and seal, this Twelfth day of September, in the year
of our Lord One thousand eight hundred and eighty one.
VERAND WENZESLAUD VON NAWUUKI.
("S'T)