Year: 1897

page_text: WILLIAM HENRY CLAUS and ALFRED RÉE, Aniline Colour Manufacturers, Droylsden,
Manchester, and LEON MARCHLEWSKI, 25, Wellington Street, Higher Broughton,
Manchester, do hereby declare the nature of this invention to be as follows:-
The invention relates to the production of new azoic compounds, which possess the
property of dyeing cotton without the aid of mordants. The intermediate products
for the production of these dyes are:
., the amido azo compounds obtained by coupling the diazo compound of
y-amidonaphtolsulphonic acid with itself, or with amidonaphtoldisulphonic acid
(OH: NH, SO,H: SO,H 1: 8:36) in alkaline solution.
=
b., the amido azɔ compound obtained by coupling the diazo compound of a:nido-
naphtoldisulphonic acid (1: 8: 3: 6) with itself or with y-amidonaphtolsulphonic acid
in alkaline solution.
c., the amido azo compound obtained by coupling the diazo compound of y-amido-
naphtolsulphonic acid with itself or amidonaphtolsulphonic acid in acid solution.
d., the amido azo compound obtained by the action of the diazo compound of
amidonaphtoldisulphonic acid (1: 8: 3: 6) with itself or y-amidonaphtolsulphonic
acid in acid solution.
e., the diamidoazo compound obtained by coupling diazo-y-naphtol sulphonic acid
with 1 mol. of m-phenylenediamine or toluylenediamine.
In order to illustrate the methods of production of cotton dyes using the above
enumerated intermediate products, the following examples may be given.
Clauses y
molecule of any of the amido azo compounds enumerated under
The produced dyes may be diazotised on the fibre and combined with
phenylenediamine.
EXAMPLE II.
1 mol. of the amido azo compounds enumerated under clause a orb is diazotised
by means of one molecule of sodium nitrite and the diazo compound introduced into
the alkaline solution of one molecule of y-amidonaphtolsulphonic acid or of one mol.
of amidonaphtoldisulphonic acid (1:8:3:6). The obtained amido disazo compound
is brought to act in alkaline solution upon one mol. of tetrazo diphenyl, tetrazoditolyl,
tetrazo dianisidyl and the like, and after some time one molecule of an amine, phenole,
naphtole or sulpho acids thereof is added. The dyes may be diazotised on the fibre
and combined with phenylendiam.

page_text: manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:—
The invention relates to the production of new substantive dyes. The intermediate
products for the manufacture of these dyes are:-
(a). The amidoazo compound obtained by combining the diazotised gamma-
amidonaphtholsulphonic acid with the same acid, or with amido-naphtholdisulphonic
acid 1:8:3:6, in alkaline solution.
(b). The amidoazo compound obtained by combining the diazotised gamina-
ainidonaphtholsulphonic acid with the same acid, or with amido-naphtholdisulphonic
acid 18:3:6, in acid solution.
(c). The amidoazo compound obtained by combining the diazotised amido-
naphtholdisulphonic acid 1:8:3: 6 with the same acid, or with gamma-amidonaphthol-
sulphonic acid, in acid solution.
The preparation of the amidoazo compounds enumerated under clause (a) may be
performed in exactly the same manner as described in our British Patent
No. 18020/96.
For instance, 23.9 parts, by weight, of gamma-amido-naphtholdisulphonic acid are
diazotised in the well-known manner with 6.9 parts of nitrite of soda, and the yellow
diazo compound obtained introduced into the alkaline solution of 31-9 parts of
amido-naphtholdisulphonic acid H. The solution obtained may be further used for
the preparation of the colouring matters as described hereinafter.
The preparation of the amidoazo compounds enumerated above under (b) and (c) is
performed in the following manner :-
23.9 parts, by weight, of gamma-amidonaphtholsulphonic acid are diazotised in
the well-known manner with 6.9 parts of sodium nitrite, and the diazo compound
obtained gradually introduced into the solution of 26-1 parts of gamma-amido-
naphtholsodium sulphonate, to which an excess of sodium acetate is added. The
formation of the amidoazo compound is completed after a few hours.
In a similar manner the amidoazo compounds deriving from two mols. of amido-
naphtholdisulphonic acid H. is prepared, substituting in the foregoing example the
ganına acid by 31.9 parts of the disulpho. acid.
In order to illustrate the preparation of direct dyeing cotton colours, using the
above-mentioned various amidoazo compounds, the following examples may
given
EXAMPLE I.
be
Production of azodyes from the amidoazɔ compounds enumerated under clause (α).

page_text: mol. of an ortho-amidoazo compound obtained by combining diazotised gammac-
amidonaphthols ulphonic acid with the same acid, or with amidonaphtholdisulphonic
acid H in acid solution; or by combining diazotized amidonaphtholdisulphoni
acid H with the same acid, or with gamma-amidonaphtholsulphonic acid in acid
solution.
7. Producing new tetrakisazodyes by combining a tetrazotised paradiamine-such
as benzidine, tolidine, and the like-in alkaline solution with one mol. of salicylic
acid, and, finally, with one mol. of a disazo compound obtained by combining one
mol. of the diazotised amidoazo compounds mentioned in Claim 1. with one mol. of a
naphthol, of an amido-naphtholsulphonic acid, a naphthylaminesulphonic acid, or a
naphtholsulphonic acid.
8. Producing new polyazodyes by combining one mol. of a tetrazotised para-
diamine-such as benzidine, tolidine, dianisidine, diamidodiphenylamine, and the
like--with one mol. of the diamidodisazo compound obtained by combining 2 mol.
of diazotised gamma-amidonaphthol sulphonic acid with one mol. of m-phenylene-
diamine, and one mol. of a meta-diamine-such as toluylenediamine, or one mol. of
a phenol, naphthol, amidonaphthol, napthylamine or sulpho. acids thereof.
9. As new substances the new substantive polyazo colouring matters, produced as
hereinbefore set forth.
1
100
WILLIAM HENRY CLAUS.
ALFRED REE.
LEON MARCHLEWSKI.