Year: 1888

page_text: WILLIAM GOULDEN THOMPSON 5 Cooper Street, Manchester, Manufacturing
Chemist and WILLIAM HENRY CLAUS Tonge Villa, Middleton Chemist & Manager
do hereby declare the nature of this invention to be as follows:-
The production of new colouring matters obtained by treating cutch, quercitron-
bark & logwood decoctions in solution or otherwise with diazo- or tetrazo-compounds
& by treating fustic decoctions in solution or otherwise with tetrazo-compounds.
Our invention consists, firstly in the production of new dyes suitable for dyeing
wool & cotton with mordant more especially for printing on cotton fabrics, by the
action of diazocompounds of benzole & its homologues, the sulfo acids of the same,
amidoazobenzole and its sulfoacids, a & ẞ naphthylamine & their sulfoacids, the
phenylene diamine on decoctions of cutch, quercitronbark & log wood.
Secondly we obtain new colouring matters, the more valuable of which dye cotton
without mordant in a soap-bath, by the action of tetrazo-compounds of benzidine & its
homologues & sulfoacids on the decoctions of cutch, quercitronbark & log wood, fustic
& other dyewoods.
Thirdly we obtain new dyes by making mixed tetrazo-compounds, we proceed by
first making the well known not readily soluble compounds, which are formed by the
action of diazotised benzidine & its homologues & their sulfo acids on only one
molecule of a phenole, naphthole & their sulfoacids, salicylic acid or an amine or
their sulfoacids and we combine these compounds with a molecule of the acting
principal of cutch, quercitronbark, logwood, fustic & other dyewood decoctions in
solution or otherwise.
Fourthly we take the well known compounds formed by the action of diazotised
benzidine & its homologues & their sulfoacids on two molecules of an amine or a
diamine or their sulfoacids, these compounds we diazotise again & combine the same
with decoctions of cutch, quercitronbark, log wood, fustic & other dyewoods in
solution or otherwise.
1
1000

page_text: WILLIAM GOULDEN THOMPSON Manufacturing Chemist 5 Cooper Street, Manchester
and WILLIAM HENRY CLAUS Chemist Tonge Villa, Middleton near Manchester 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:-
The production of new yellow, orange, red, violet & blue colouring matters
obtained by treating diazo- or tetrazo-compounds with the acting principles of cutch,
logwood & quercitronbark and by treating tetrazo-compounds with the active principle
of fustic.
Firstly we have obtained soluble dyes by the action of diazo-compounds of benzole
& its homologues, the sulfoacids of the same, amidoazo-benzole & its sulfoacids,
a and naphthylamine & their sulfoacids, the phenylenediamine on the active
principles of cutch, logwood & quercitronbark; several of these dyes are valuable to
the dyer & calico-printer.
Secondly we have found that by the action of tetrazo-compounds of benzidine
& its homologues & its sulphoacids on the active principles of cutch, quercitron-bark,
logwood & fustic new colouring matters are formed.
Thirdly we obtain new dyes by making mixed tetrazo-colours such as produced
by the action of one molecule of the tetrazo-compounds of benzidine, its homologues
& their sulphoacids with one molecule of the active principles of the above mentioned
dyewoods & one molecule of a phenol, naphthol, their sulphoacids, salicylic acid or
an amine or their sulphoacids.
The proportions of the dyewood solution to the diazo- or tetrazo-compounds varies
according to the strength of the former & must be ascertained by experiment, the
proportions can not be put down by a fast & hard rule as the active principle in cach
dyewood extract varies considerably, the proportions we give later however produce
very satisfactory results & the dyes can be easily made by a colour chemist.
That new colouring matter is formed by the above mentioned reactions, is easily
shown by the addition of diazo-compound, obtained by treating an amine salt with a
solution of nitrite of soda to the weak alcaline or with acetic acid acidulated solution
of the dyewood, the colour of the solution changes at once, in some cases however
after a short time, the colour so produced can be precipitated with salt & collected by
filtration, such colours dye wool in a weak acid bath, they also can be used for dyeing

page_text: & printing calico in conjunction with chrome, iron & alumina mordants, some very
valuable steam colours for printing on calico are thus obtained.
The tetrazo colours produced in the same manner from the tetrazo-compounds of
benzidine its homologues & their sulphoacids are rather insoluble & of less commercial
value.
We have however obtained valuable dyes by the action of half the quantity of the
dyowood solution that we take in the preceding case with one molecule of the tetrazo-
compound of benzidine, insoluble compounds are thus formed which we further com-
bine with one molecule of a phenol naphthol, an amine or the sulphoacids of the same
in a weak alcaline or with acetic acid acidulated solution, after some time the mixed
tetrazo-compounds are formed, they are easily salted out & collected in a filter, they are
fast colours & dye cotton without mordant in a soap bath, that they are not simply
mixtures is easily demonstrated by allowing the clear solution of one molecule of
diazotised-benzidine to run into a colution containing only one molecule of the active
principle of the dyewood, an insoluble precipitate is formed after a short time, this
insoluble compound is analogous to the well known compound formed by the action of
the diazotised benzidine on one molecule of a phenol, if we treat our thus formed
insoluble compounds with one molecule of a phenol, amine or their sulphoacids,
colours are produced which are valuable to the dyer.
As an illustration for the first, second & third part of our patent we give the
following proportions after which the new colours can be produced, the cutch
used is always calculated as solid, the logwood, quercitronbark & fustic as extract-of
51° Twaddle.

page_text: Amine.
Amidoazo benzol- *
disulphonie-
acid
yewood.
cutch
logwood
yellow to brown.
253 quercitron
To illustrate the manner in which these colours are manufactured we give as
instance the colour produced by the action of toluidine on cutch. 107 lbs. toluidine
are dissolved in 180 gls. water containing 230 lbs. Muriatic acid 30 To the solution
is cooled or either allowed to cool, 73 lbs. of Nitrite of soda dissolved in 20 gls. of
water are then added & after a lapse of about. one minute the 280 lbs. of cutch
dissolved in 100 gls. of water is added & the colour can be salted out at once &
filtered & dryed in the usual way. The colour so produced gives fine chocolate
shades with iron & chrome mordants.
To illustrate the manner in which these colours are manufactured we give as
instanco the colour produced by the action of toluidine on cutch. 107 lbs. toluidine
are dissolved in 180 gls. water containing 230 lbs. Muriatic acid 30 To the solution
is cooled or either allowed to cool, 73 lbs. of Nitrite of soda dissolved in 20 gls. of
water are then added & after a lapse of about. one minute the 280 lbs. of cutch
dissolved in 100 gls. of water is added & the colour can be salted out at once &
filtered & dryed in the usual way. The colour so produced gives fine chocolate
shades with iron & chrome mordants.

page_text: night, the liquor in which the colour is suspended is then made slightly alcaline & the
temperature raised with steam up to 50 to 60° co. the colour is dissolved, then filtered
& salted out, it dyes cotton in a soap bath a bluish violet hue, instead of using
92 parts benzidine the corresponding amount of its higher homologue 106 parts
tolidine may be used, the dyes resulting are a little redder in shade.
As our invention we claim substantially the production of the new colouring matters
as set out in the first; second & third part of this application.