Production of Orange Colouring Matters or Dyes.
Year: 1893

page_text: Date of Application, 13th Jan., 1893
Complete Specification Left, 12th Oct., 1893-Accepted, 18th Nov., 1893
PROVISIONAL SPECIFICATION.
Production of Orange Colouring Matters or Dyes.
I, THOMAS RICHARD SHILLITO of 89 Chancery Lane in the County of
Middlesex, Engineer and Patent Agent, do hereby declare the nature of this
invention, a communication to me from abroad by John Rudolph Geigy of the Firin
of John Rudolph Geigy & Co., of Basel, Switzerland, Colour Manufacturers, to be
as follows:-
This invention relates to the production of orange colouring matters or dyes.by.
the reaction of benzidine, diamidophenyltolyl, tolidine, benzidinsulfone, diamido-
phenyltolylsulfone, tolidinsulfone, diamidodiphenylen oxide, diamidoditoluylen
oxide, diamidodiphenol ethers, ethers of mono-oxydiamidodiphenyl, ethers of mono-
oxydiamidophenyltolyl, diamidocarbazol, diamidostilben and the known mono and
di-sulpho acids of these compounds upon p-nitrotoluolsulpho-acid under the influence
of caustic alkali in the heated state.
As an example of the manner of carrying out the invention, 25 kilogrammes of a
paste containing 33 per cent. of sulphate of benzidine are carefully mixed with a
solution of 17 kilogrammes of p-nitrotoluolsulpho-acid in about 50 liters of water,
the whole mass is then heated to boil when 20 kilogrammes of caustic soda lye
of 40° Beaumé are added. In a short time the reaction takes place and the mass
takes a deep orange colour and becomes very thick. When the reaction is complete
the dye stuff is dissolved in about 500 liters of boiling water and precipitated by
means of common salt. When filtered and dried it forms a brownish powder,
soluble in water, giving, orange colour and dyes unmordanted cotton orange
shades.
As another example, 14 kilogrammes of sodium salt of benzidinsulfone di-sulpho
acid and 17 kilogrammes of p-nitrotoluolsulpho acid are dissolved together in about
100 liters of boiling water, then 15 kilogrammes of caustic soda lye of 40° Beaumé
are added, the mass boiled during about half an hour and then treated as in the
preceding example. The dye stuff thus obtained is readily soluble in water and
dyes unmordanted cotton orange.
Dated this 13th day of January 1893.
THOMAS R. SHILLITO,
89, Chancery Lane, London, W.C.
COMPLETE SPECIFICATION.
Production of Orange Colouring Matters or Dyes.
I, THOMAS RICHARD SHILLITO of 89 Chancery Lane in the County of
Middlesex, Engineer and Patent Agent, do hereby declare the nature of this
invention, a communication to me from abroad by John Rudolph Geigy of the
Firm of John Rudolph Geigy and Co. of Basel, Switzerland, Colour Manu-
facturers, 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 production of orange colouring matters or dyes by
the reaction of benzidine or its homologues or their sulpho acids with p-nitrotoluol-
sulfo acid, under the influence of caustic alkali in the heated state.
The following substances are employed for the reaction:-Benzidine, diamido-
phenyltolyl, tolidine, benzidinsulfone, diamidophenyltolylsulfone, tolidinsulfone,
diamidudiphenylenoxide, diamidoditoluylenoxide, diamidodiphenol ethers, ethers of
[Price 8d.1

page_text: mono-oxydiamidodiphenyl, ethers of mono-oxydiamidophenyltolyl, diamidocarbazol,
diamidostilben and the known niono and disulfo acids of these compounds.
As an example of the manner of carrying out the invention:-25 kilogrammes of
a paste containing 33 per cent. of sulphate of benzidine is carefully mixed with a
solution of 17 kilogrammes of p-nitrotoluolsulfo acid in about 50 liters of water.
The whole mass is heated to boil when 20 kilogrammes of caustic soda lye of
40° Beaumé are added. In a short time the reaction takes place and the mass
takes a deep orange colour and becomes very thick. When the reaction is
complete, the dye stuff is dissolved in about 500 liters of boiling water and pre-
cipitated by means of common salt. When filtered and dried it forms a brownish
powder soluble in water, giving orange colour and dyes unmordanted cotton orange
shades.
As another example:-14 kilogrammes of sodium salt of benzidinsulfone disulfo
acid and 17 kilogrammes of p-nitrotoluolsulfo acid are dissolved together in about
100 liters of boiling water, then 15 kilogrammes of caustic soda lye of 40° Beaumé
are added, the mass boiled during about half an hour and then treated as in the
preceding example. The dye stuff thus obtained is readily soluble in water, giving
orange colour and dyes unmordanted cotton orange.
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 :-
The production of orange colouring matters or dyes by the reaction of the
following substances :-Benzidine, diamidophenyltolyl, tolidine, benzidinsulfone,
diamidophenyltolylsulfone, tolidinsulfone, diamidodiphenylenoxide, diamido-
ditoluylen oxide, diamidodiphenol ethers, ethers of mono-oxydiamidodiphenyl,
ethers of mono-oxydiamidophenyltolyl, diamidocarbazol, diamidostilben and the
known mono and disulfo acids of these compounds, upon p-nitrotoluolsulfo acid in
presence of caustic alkali, substantially as described.
Dated this 12th day of October 1893.
THOMAS R. SHILLITO,
89, Chancery Lane, London, W.C.