IMPROVEMENTS IN OBTAINING VARIOUS COLORS ON COTTON AND OTHER TEXTILE FIBRE
Year: 1880

page_text: LETTERS PATENT to Thomas Holliday, of the Firm of Read, Holliday, and
Sons, of Huddersfield, in the County of York, Manufacturing Chemists, for an
Invention of "IMPROVEMENTS IN OBTAINING VARIOUS COLORS ON COTTON
AND OTHER TEXTILE FIBRE."
PROVISIONAL SPECIFICATION left by the said Thomas Holliday at the
Office of the Commissioners of Patents on the 28th October 1880.
THOMAS HOLLIDAY, of the Firm of Read, Holliday, and Sons, of Huddersfield, in
the County of York, Manufacturing Chemists. "IMPROVEMENTS IN OBTAINING
VARIOUS COLORS ON COTTON AND OTHER TEXTILE FIBRE."
In the Provisional Specification of an application for Letters Patent bearing date
the 6th day of July last past, made by myself and Robert Holliday, a process was
described of impregnating cotton or other textile fibre with napthol and a diazo-
compound, and we stated therein that we employed for the purpose alpha or beta
napthol and a diazo-compound, and we proposed to employ the diazo and diazo-
azo-compounds prepared or produced from aniline, toluidine, hylidine, and napthy-
lamine, and I have since discovered that I can effect the production on the fibre
direct of azo-colors by the action of the phenols, such as alpha or beta napthol,
phenol, cresol, and others upon the diazo compounds produced from amines, which
are obtained by the introduction of ethyl or methyl into aniline, toluidine, and
bylidine, or upon the diazo-compounds of the monatomic phenols of the series of
the benzols, or upon the diazo-compounds of the ethers of the said phenols,
produced by the combination of ethyl or methyl with the said phenols, or upon the
diazo-compounds of the napthols and their ethers produced by the combination of
ethyl or methyl, or upon diazo compounds obtained from phtalamine.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Holliday in the Great Seal Patent Office on the 26th
April 1881.
THOMAS HOLLIDAY, of the Firm of Read, Holliday, and Sons, of Huddersfield,
in the County of York, Manufacturing Chemists. "IMPROVEMENTS IN OBTAINING
VARIOUS COLORS ON COTTON AND OTHER TEXTILE FIBRE."
In the Specification of Letters Patent bearing date the 6th day of July last past
granted to myself and Robert Holliday, a process was described of impregnating
cotton or other textile fibre with napthol and a diazo compound, and we stated
therein that we employed for the purpose alpha or beta napthol and a diazo
compound, and we proposed to employ the diazo and diazo-azo compounds prepared
or produced from aniline, toluidine, hylidine, and napthylamine, and I have since
discovered that I can effect the production on the fibre direct of azo colors by the
action of the phenols, such as alpha or beta napthol, phenol, cresol, and others
upon the diazo compounds produced from amines, which are obtained by the
introduction of ethyl or methyl into aniline, toluidine, and xylidine, or upon the
diazo compounds of the monatomic phenols of the series of the benzols, or upon the
'diazo compounds of the ethers of the said phenols produced by the combination of
ethyl or methyl with the said phenols or upon the diazo compounds of the napthols
and their ethers produced by the combination of ethyl or methyl, or upon diazo
compounds obtained from phtalamine.
In the application of these matters on the fibre I find it convenient. to adopt
such relative proportions of them as will give about their relative chemical
equivalents at the moment of the development of the color by the action of an
alkali, which alkali should be present in equivalent proportion to or excess of the
acid that may be contained in the diazo compound.
A good result may be obtained when the proportion of the phenol on the fibre
to such fibre is two parts of phenol to 100 parts of fibre, but these relations admit
of considerable variation, and the diazo compound and the alkali are in relative
equivalent proportion as already stated.
The character or property of the color will vary with the proportion or mixture
of the phenols or diazo compounds employed.
Having thus described my Invention and means which I adopt in carrying the
same into effect, I would have it understood that what I claim is, the obtaining
various colors on cotton and other textile fibre by impregnating the said fibre with
phenols and diazo compounds so as to produce azo color directly in or upon the
fibre in manner substantially as described.
In witness whereof, I, the said Thomas Holliday, have hereunto set my hand
and seal, this Fourteenth day of March, One thousand eight hundred and
eighty one.
THOMAS HOLLIDAY. (L.S.)