IMPROVEMENTS IN THE MANUFAO- TURE OF COLOURING MATTERS
Year: 1881

page_text: '
This Specification was, upon the 7th day of March 1892, Amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
LETTERS PATENT to John Imray, of No. 28, Southampton Buildings, in tho
County of Middlesex, for an Invention of "IMPROVEMENTS IN THE MANUFAO-
TURE OF COLOURING MATTERS." A communication from abroad by Horace
Koechlin of Loerrach in the German Empira Chamist
PROVISIONAL SPECIFICATION left by the said John Imray at the Office of
the Commissioners of Patents on the 9th November 1881.
JOHN IMRAY, of No. 28, Southampton Buildings, in the County of Middlesex.
"IMPROVEMENTS IN THE MANUFACTURE OF COLOURING MATTERS." [A communica-
tion from abroad by Horace Koechlin, of Loerrach, in the German Empire,
Chemist.].
According to this Invention violet colouring matters are produced by the action
on tannin and its analogues of the nitrosed derivatives of the tertiary amines, such
as nitrosodimethylaniline or nitrosodiethylaniline or their salts, or sulphoconjugate
acids or chloroquinonimides. Amongst the analogues of tannin which may be
employed are the products of catechu, morina, oak, quinine, coffee, dividivi, sumac,
and the like; also gallic acid, or salts or ethers of the substances mentioned may
be used. For preparing the colouring matter, an alcoholic, acetic, or aqueous
solution of hydrochlorate of nitrosodimethylaniline and gallic acid is heated. The
product of the reaction is diluted with water, slightly alkaline, and precipitated by
a weak acid, such as acetic acid, and filtered. The leukobases or leukosalts of the
colouring matters may be produced by heating, as above mentioned, a solution of
gallato of soda and nitrosodimethylaniline.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Imray in the Great Seal Patent Office on the 9th May
1882.
JOHN IMRAY, of No. 28, Southampton Buildings, in the County of Middlesex.
"IMPROVEMENTS IN THE MANUFACTURE OF COLOURING MATTERS." A communica-
tion from abroad by Horace Koechlin, of Loerrach, in the German Empire,
Chemist.
According to this Invention violet colouring matters are produced by the action
on tannin and its analogues of the nitrosed derivatives of the tertiary amines, such
es the nitrosodimethylaniline or nitrosodiethylaniline, or their salt below mentioned,
or sulphoconjugate acids or chloroquinonimides. Amongst The analogues of tannin
which may be employed are the product of which may be obtained from catechu,
known as catechine and the products which may be obtained from morina, onk, quinine,
coffee, dividivi, and sumac, and the like; also gallic acid, or salts or ethers of the
substances may be used but I do not direct nor do I make claim to the use of such salts.
For preparing the colouring matter, an alcoholic, acetic, or aqueous solution of hydro-
chlorate of nitrosodimethylaniline and gallic acid is heated. The product of the
reaction is diluted with water, slightly alkaline, and precipitated by a weak acid, such
-as-acetic acid, and filtered. The leukobases or leukosuits of the colouring mutters
may be produced by heating, us above mentioned, a solution of gallate of soda and
nitrosodimethylaniline.
Having thus described the nature of the said Invention, and in what manner
the same is to be performed, as communicated to me by my foreign correspondent,
I claim,
The manufacture of colouring matters by the action of the nitrosed derivatives
of-the-tertiary amines the nitroso-di-methyl-aniline or their compound above mentioned
on tannin or its analogues, substantially as herein described.
my hand
In witness whereof, 1, the said John Imray, have hereunto set
and seal, this Ninth day of May, in the year of our Lord One thousand
eight hundred and eighty two.
JOHN IMKAY. (L.S.)

page_text: LETTERS PATENT to John Imray, of No. 28, Southampton Buildings, in the
County of Middlesex, for an Invention of "IMPROVEMENTS IN THE MANUFAC-
TURE OF COLOURING MATTERS." A communication from abroad by Horace
Koechlin, of Locrrach, in the German Empire, Chemist.
PROVISIONAL SPECIFICATION left by the said John Imray at the Office of
the Commissioners of Patents on the 9th November 1881.
JOHN IMRAY, of No. 28, Southampton Buildings, in the County of Middlesex.
"IMPROVEMENTS IN THE MANUFACTURE OF COLOURING MATTERS." [A communica-
tion from abroad by Horace Koechlin, of Loerrach, in the German Empire,
Chemist.]
According to this Invention violet colouring matters are produced by the action
on tannin and its analogues of the nitrosed derivatives of the tertiary amines, such
as nitrosodimethylaniline or nitrosodiethylaniline or their salts, or sulphoconjugate
acids or chloroquinonimides. Amongst the analogues of tannin which may be
employed are the products of catechu, morina, oak, quinine, coffee, dividivi, sumac,
and the like; also gallic acid, or salts or ethers of the substances mentioned may
be used. For preparing the colouring matter, an alcoholic, acetic, or aqueous
solution of hydrochlorate of nitrosodimethylanilino and gallic acid is heated. The
product of the reaction is diluted with water, slightly alkaline, and precipitated by
a weak acid, such as acetic acid, and filtered. The leukobases or leukosalts of the
colouring matters may be produced by heating, as above mentioned, a solution of
gallate of soda and nitrosodimethylaniline.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Imray in the Great Seal Patent Office on the 9th May
1882.
JOHN IMRAY, of No. 28, Southampton Buildings, in the County of Middlesex.
"IMPROVEMENTS IN THE MANUFACTURE OF COLOURING MATTERS." A communica-
tion from abroad by Horace Koechlin, of Loerrach, in the German Empire,
Chemist.
According to this Invention violet colouring matters are produced by the action
on tannin and its analogues of the nitrosed derivatives of the tertiary amines, such
as nitrosodimethylaniline or nitrosodiethylaniline, or their salts, or sulphoconjugate
acids or chloroquinonimides. Amongst the analogues of tannin which may be
employed are the products of catechu, morina, oak, quinine, coffee, dividivi, sumac,
and the like; also gallic acid, or salts or ethers of the substances mentioned may
be used. For preparing the colouring matter, an alcoholic, acetic, or aqueous
solution of hydrochlorate of nitrosodimethylaniline and gallic acid is heated. The
product of the reaction is diluted with water, slightly alkaline, and precipitated by
a weak acid, such as acetic acid, and filtered. Tho leukobases or leukosalts of the
colouring matters may be produced by heating, as above mentioned, a solution of
gallate of soda and nitrosodimethylaniline.
Having thus described the nature of the said Invention, and in what manner
the same is to be performed, as communicated to me by my foreign correspondent,
I claim,―
The manufacture of colouring matters by the action of the nitrosed derivatives
of the tertiary amines or their compounds on tannin or its analogues, substantially
as herein described.
In witness whereof, I, the said John Imray,, have hercunto set my hand
and seal, this Ninth day of May, in the year of our Lord One thousand
eight hundred and eighty two.
JOHN IMRAY. (L.S.)