Improvements in Colouring Matters.
Year: 1889

page_text: Date of Application, 24th July, 1889
Complete Specification Left, 20th Nov., 1889-Accepted, 21st Dec., 1889
PROVISIONAL SPECIFICATION.
[Commanicated from abroad by RUPERT GREVILLE WILLIAMS, of Albany, in the
County of Albany, in the State of New York, one of the United States of
America, Manufacturer.]
Improvements in Colouring Matters.
I. HENRY HARINGTON LEIGH, Fel. Inst. P A., Assoc. Mem. Inst. C.E, practising as
Phillips & Leigh, of No 22, Southampton Buildings, Chancery Lane, London, WC.,
do hereby declare the nature of this invention to be as follows:-
My invention relates first to the production of new colouring matters which dye
unmoranted cotton in an alkaline or soap bath and which are obtained by combining
one molecule of a tetrazo compound with two molecules of the alkylisod acids of the
orchella lichens or compounds of the same, and secondly, to the production of mixed
colours by first combining one molecule of a tetrazo compound with one-molecule of
one of the herein mentioned phenols or amines and then combining this intermediate
product with one molecule of the alkylised acids of the orchella lichens or compounds
of the same.
The alkylised acids referred to can be prepared by treating the orchella lichens for
a short time with water in prosence of lime and after filtering precipitating the
orsellinic and other acids by means of hydrochloric acid. The acids of the; lichens
thus obtained in the form of a jelly are filtered off and dried at a low temperature and
are then boiled with various alcohols to produce the corresponding alkylized derivatives
which can be purified by re-crystalization.
The alkylised acids may be also prepared by treating the lichens directly with the
alcohols.
I do not confine myself to these or any other methods for producing the alkylized
lichen acids as my invention does not relate to their production but to the colours
obtained by their use.
By tetrazo compounds I moan tetrazo diphenyl and its homologues :
Tetrazo naphthalene ;
"
"
stilbene;
fluorene ;
"7
diphenolether
;
"
"
azobenzole and its homologues ;
oxydiphenyl,
B
T'ho
as well as the alkylized compounds or the sulpho or carbo acids of 'the same.
phenols and amines I have successfully used up to the present time in this process are
The naphthylamines ;
The sulpho acids of
1
The naphthols;
Mono ethyl aniline
•

page_text: the lichens and 100 lbs. of caustic soda dissolved in 100 gallons of water. The
colour is immediately formed and is salted out pressed and dried. This colour dyes
a fine scarlet shade on unmordanted cotton in an alkaline or soap bath.
COMPLETE SPECIFICATION.
Improvements in Colouring Matters.
I, HENRY HARINGTON LEIGH, Fel. Inst. P.A., Assoc. Mem. Inst. C.E, practising
as Phillips & Leigh, of No. 22, Southampton Buildings, Chancery Lane, London, W.C.,
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 :-
My invention relates first to the production of new colouring matters which dye
unmordanted cotton in an alkaline or soap bath, and which are obtained by combining
one molecule of a tetrazo compound with two molecules of the alkylised acids of the
orchella lichens or compounds of the same; and secondly, to the production of mixed
colours by first, combining one molecule of a tetrazo compound with one molecule of
one of the herein mentioned phenols or amines, and then combining this intermediate
product with one molecule of the alkylised acids of the orchella lichens or compounds
of the same.
The alkylized acids referred to can be prepared by treating the orchella lichens for
a short time with water in presence of lime, and after filtering, precipitating the
orsellinic and other acids by means of hydrochloric aid. The acids of the lichens thus
obtained in the form of a jelly are filtered off and dried at a low temperature, and
are then boiled with various alcohols to produce the corresponding alkylized derivatives
which can be purified by re-crystallization.
The alkylized acids may be also prepared by treating the lichens directly with the
alcohols.
I do not confine-myself to these or any other methods for producing the alkylized
lichen acids, as my invention does not relate to their production, but-to the colours
obtained by their use.

page_text: EXAMPLE II.
If the 28 lbs. of benzidine sulphate in Ex. I be replaced by 30.2 lbs. of tolidine
sulphate, a fine saffronine shade of colour is produced.
Mixed azo colours "
can be produced practically as follows:-
EXAMPLE III.
30.2 lbs. of tolidine sulphate or its equivalent of the base are converted into the
tetrazo compound. This solution is then run into 28 lbs. of alpha naphthylamine
mono sulpho acid soda salt and 30 lbs. of acetate of soda dissolved in 100 gallons
of water.
The mixture is well stirred, and when all the tetrazo compound is combined, this
intermediate product is run into a solution of 18.2 lbs. of the methylated lichen acid
and 100 lbs. of caustic soda.
The colour thus formed is treated as usual, and is a blue shade of red known as

page_text: 2. The process for the production of mixed colouring matters by first combining
one molecule of one of the herein mentioned tetrazo.compounds with one molecule of
one of the herein before mentioned amines or phenols and then combining this
intermediate product with one molecule of an.alkylized acid of the orchella lichen or
compounds of the same.
3. As new colouring-matters, the products obtained by the above-processes.
-= Dated this hf Nanas 1990