Manufacture of New Azoic Colouring Matters.
Year: 1887

page_text: Date of Application, 29th June, 1887
.. Complete Left, 29th Mar., 1888
Complete Accepted, 4th May, 1888
[Communicated from abroad by LA SOCIÉTÉ ANONYME DES MATIÈRES COLORANTES
ET PRODUITS CHIMIQUES DE ST. DENIS, ALCIDE FRANÇOIS POIRRIER, Manufacturer,
ZACHARIE ROUSSIN, Chemist, and DANIEL AUGUSTE ROSENSTIEHL, Chemist, all
of 105, Rue Lafayette, Paris, France.]
Manufacture of New Azoic Colouring 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 to be as follows:-
This invention relates to the manufacture of azoic colouring matters obtained by.
combining the diazoic derivatives of metasulphanilic, parasulphanilic, ortho and para-
toluidine sulphonic sulphoxylidic naphthylaminesulphonic (mono- and di-sulphonic)
acids, with alpha-naphthylamine, then again diazotising and combining with meta-
phenylenediamine, metacresylenediamine, metaxenylenediamine or resorcine.
Of these colouring matters those that are derived from resorcine dye violet, the
others in dark violet oven to black shades.
The mode of preparation is the same for all the products; the following is an
example.
-
10 kilogr. of metasulphanilate of soda (or an equivalent quantity of a soda salt of
another of the acids mentioned above) are dissolved in 200 litres of water and
13 kilos. of hydrochloric acid at 20° Beaumé. To the solution kept agitated and
cooled, is added a solution of 3 kilos. 400 of nitrite of soda in 10 litres of water. Tho
liquor thus obtained contains the diazoic derivative, to this is added a solution of
9 kilos. of hydrochlorate of alpha-naphthylamine in 250 litres of water. When the
reaction is complete the liquor is filtored and diluted with 500 litres of water, and has
added to it 13 kilos. of hydrochloric acid, then a solution of 3 kilos. 400 of nitrito
of soda in 10 litres of water. The diazo-azoic derivate is precipitated, it is collected
on the filter and introduced into a solution 5 kilos. 400 of metaphenylenediamine in
500 litres of water. Care should be taken to add a quantity of carbonate of soda to
render the solution, after reaction, slightly alkaline. The colouring matter is finally
precipitated with salt.
In the same manner the operation is conducted, when metacresylenediamine meta-
xenylenediamine or resorcine is substituted for phenylenediame.
The proportions of the ingredients may be varied.
ABEL & IMRAY,
Agents for the Applicant.

page_text: Manufacture of New Azoic Colouring 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 and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to the manufacture of azoic colouring matters obtained by
combining the diazoic derivatives of metasulphanilic, parasulphanilic, ortho- and para-
toluidino sulphonic, sulphoxylidic, naphthylaminesulphonic (mono- and di-sulphonic)
acids, with alpha-naphthylamine, then again diazotising and combining with meta-a
phenylenediamine, metacresylenediamine, metaxonylenediamine or resorcine.
these colouring matters those that are derived from resorcine dye violet, tho othors in
dark violet even to black shades.
Of
The mode of preparation is the same for all the products; the following is an
example.
10 kilogr. of motasulphanilate of soda (or an equivalent quantity of a soda salt of
another of the acids mentioned above) are dissolved in 200 litres of water and
18 kilo. of hydrochloric acid at 20° Beaume. To the solution, kept agitated and
cooled, is added a solution of 3-4 kilo. of nitrite of soda in 11. litres of water. The
liquor thus obtained contains the diazoic derivativo; to this is added a solution of
9 kilo. of hydrochlorate of alpha-naphthylamine in 250 litres of water. When the
reaction is completo, the liquor is filtered and diluted with 500 litres of water, and
lins added to it 13 kilo. of hydrochloric acid, then a solution of 3.4 kilo. of nitrite of
soda in 10 litres of water: The diazo-azoie derivate is precipitated; it is collected on
the filter and introduced into a solution of 5-4 kilo. of metaphenylenediamine in
500 litres of water. Care should be taken to add a quantity of carbonate of soda to
render the solution, after reaction, slightly alkaline. The colouring matter is finally
precipitated with salt.
In the same manner tho operation is conducted when metacresylenediamine, meta-
xenylenediamine or resorcine is substituted for phenylenediamine.
'The proportions of the ingredients may be varied.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is:
1. The process of manufacturing azoic colouring matters by combining the diazoic
derivatives of metasulphanilic, parasulphanilie, ortho- and para-toluidinesulphonie,
sulphoxylidic naphthylaminesulphonic (mona- and disulphonic) acids with alpha-
naphthylamine, then diazotising the product of this combination and combining with
metaphenylenediamine, metacresylenediamine, metaxenylenediamine, or resorcine as
above described.
2. As new products, the colouring matters obtained as above described.