Manufacture of Azo Coloring Matters.
Year: 1889

page_text: Date of Application, 19th Mar., 1889
Complete Specification Left, 21st Nov., 1889-Accepted, 21st Dec., 1889
.
PROVISIONAL SPECIFICATION.
[Communicated from abroad by LA SOCIÉTÉ ANONYME DES MATIÈRES COLORANTES
ET PRODUITS CHIMIQUES DE ST. DENIS, ALCIDE FRANÇOIS POIRRIER, Manu-
facturer, and DANIEL AUGUSTE ROSENSTIEHL, Chemist, all of 23, Boulevard de
Strasbourg, Paris, France.]
Manufacture of Azo Coloring Matters.
I, JOHN IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex, Consulting Engineer and Patent Agent, do hereby declare the nature
of this invention to be as follows:-
This invention consists in the production of colouring matters which have among
other properties, that of dyeing wool in very deep colors, extending to black, and
which resist the action of soap, the atmosphere, and light. These coloring matters
are obtained in combining the diazo derivatives of the mono and disulphonic acids of
aniline, of toluidines, of xylidines, and of isomeric naphthylamines with a naphthyla-
mine, and then again diazotizing the compound obtained by combining it with
phenylized, toluidized, benzylidized, xylydized or naphthylidized metaphenylene
diamine, as also with the corresponding secondary and tertiary derivatives of cresyline
diamine, or of xenyline diamine.
Example. To the aqueous solution of the soda salt of 30 kilos of disulphonated a
naphthylamine are added 7 kilos of nitrite of soda and 45 kilos of commercial
hydrochloric acid. When the mixture is effected, there is run into the mass 900 litres
of a solution of a naphthylamine hydrochlorate representing 143 kilos of naphthyla-
mine, As soon as the reaction is completed, the compound is rediazotised by adding
20 kilos of coinmercial hydrochloric acid and 7 kilos of nitrite of soda dissolved
in 15 litres of water.
The diazo compound which is precipitated, is collected and is introduced in the
condition of paste into an alcoholic solution of 26 kilos of diphenylized metaphenyline
diamine. After standing for some hours the liquid is acidified and the colouring
matter, which separates from the alcoholic liquid, is collected on a filter and is finally
converted into the soda salt.
The process is carried out in an analogous manner when the diphenylized meta-
diamene is replaced by toluidized meta diamine &c. or by the corresponding cresyline-
diamines.
Dated this 10th day of Mar 1880
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Manufacture of Azo Coloring Matters.
1, JOHN IMRAY of No. 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex, Consulting Engineer and Patent Agent, 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 :-
This Invention consists in the production of coloring matters which have among
other properties, that of dyeing wool in very deep colors, extending to black colors
that resist the action of soap, the atmosphere, and light. These coloring matters are
obtained in combining the diazo derivatives of the mono and disulphonic acids of
aniline, of toluidines, of xylidines, and of isomeric naphthylamines with a naphthyla-
mine, and then again diazotizing the compound obtained and combining it with

page_text: phenylized, toluidized, benzylidized, xylydized or naphthylidized meta phenylenedia-
mine as also with the corresponding secondary and tertiary derivatives of cresylene-
diamine, or of xenylene diamine.
(L
Example. To the aqueous solution of the soda salt of 30 kilos of disulphonated
naphthylamine are added 7 kilos of nitrite of soda and 45 kilos of commercial
hydrochloric acid. When the mixture is effected there are run into it 900 litres of a
solution of a naphthylamine hydro chlorate representing 14.3 kilos of naphthylamine.
As soon as the reaction is completed, the compound is diazotised again by adding
20 kilos of commercial hydrochloric acid and 7 kilos of nitrite of soda dissolved
in 15 litres of water.
The diazo compound which is precipitated, is collected and is introduced in the
condition of paste into an alcoholic solution of 26 kilos of diphenylized meta-phenylene
diamine. After standing for some hours, the liquid is acidified and the coloring
matter, which separates from the alcoholic liquid, is collected on a filter and is finally
converted into the soda salt.
The process is carried out in an analogous manner when for the diphenylized meta-
diamine is substituted toluidized meta diamine &c. or the corresponding cresylene-
diamines.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
-
1. The herein described process for the production of coloring matters by combining
secondary and tertiary meta-diamines with diazoic derivatives such as are hereinbefore
mentioned.
2
As new products, the colouring mattors produced as "hove
Dated this 21st day of November 1889.
ABEL & IMRAY,
Agents for the Applicant.