Dyeing and Printing Animal and Vegetable Fibres with Dinaphthyl, Diquinhydrone, or with Beta-naptho-quinone or Tetra Oxydi- naphthyl.
Year: 1889

page_text: Date of Application, 12th Nov., 1889
Complete Specification Left, 12th Aug., 1890-Accepted, 4th Oct., 1890
PROVISIONAL SPECIFICATION.
Dyeing and Printing Animal and Vegetable Fibres with Dinaphthyl,
Diquinhydrone, or with Beta-naptho-quinone or Tetra Oxydi-
naphthyl.
I BENJAMIN WILLCOX of 47 Lincolns Inn Fields in the County of Middlesex Patent
Agent do hereby declare the nature of this invention which has been communicated
to me from abroad by The Farbenfabriken vormals Friedrich Bayer & Co. of Elberfeld
in the Empire of Germany to be as follows:-
My foreign correspondents have discovered that dinaphthyl diquinhydrone can be
effectually fixed with the aid of metallic mordants on animal and on vegetable fibres
and the present invention consists in enabling the said dinaphthyl diquinhydrone
which has not heretofore been employed in practice as a colouring mattor to be
employed with useful effect by means of suitable methods of dyeing and printing as
hereinafter described.
Good results are obtained with ordinary chromium mordants. The colours thus
produced in dyeing and printing resemble the shades obtained with anthra gallol and
are perfectly fast to light and soaping.
The following preparation may be employed for printing on cotton for example
1000 kilos.
The subsequent treatment is the same as with aniline colouring matter, the materials
or goods being steamed fulled and soaped.
The dyeing of animal and of vegetable fibres is conducted in the same way as
with anthra gallol the dyeing of wool mordanted with chromium being performed
by placing the materials in a cold condition in a bath mixed with two per cent. of
acetic acid and boiling say for about an hour.
The colour thus obtained has a somewhat redder tinge than that produced by
anthra gallol.
In this printing and dyeing process beta naphthe quinone or the tetra oxydi-
naphthyl obtained by a reduction process from dinaphthyl diquinhydrone may be
employed in place of the dinaphthyl diquinhydrone.
In both cases a conversion of these substances into the dinaphthyl diquinhydrone
takes place in the course of the operations the fast colours being produced by this
substance.
Dated this 12th day of November 1889
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.

page_text: COMPLETE SPECIFICATION.
Dyeing and Printing Animal and Vegetable Fibres with Dinaphthyl,
Diquinhydrone, or with Beta-naphtho-quinone or Tetra Oxydi-
naphthyl
I BENJAMIN WILLCOX of 47 Lincolns Inn Fields in the County of Middlesex
Patent Agent do hereby declare the nature of this invention (which has been com-
municated to ine from abroad by The Farbenfabriken vormals Friedr. Bayer & Co.
of Elberfeld in the Empire of Germany) and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:
My foreign correspondents have discovered that dinaphthyl diquin-hydrone can be
effectually fixed with the aid of metallic mordants on animal and on vegetable fibres
and the present invention consists in enabling the said dinaphthyl diquinhydrone
which has not heretofore been employed in practice as a colouring matter, to be
employed with useful effect by means of suitable methods of dyeing and printing as
hereinafter described. Good results are obtained with ordinary chromium mordants.
The colours thus produced in dyeing and printing resemble the shades obtained
with anthragallol and withstand the action of light and soaping.
The following preparation may be employed for printing on cotton, for example,
namely
1000.
The subsequent treatment is the same as with aniline colouring matter, the materials
or goods being dried steamed and soaped.
The dyeing of animal and of vegetable fihres is conducted in the same way as
with anthragallol the dyeing of wool mordanted with chromium being performed by
placing the materials in a cold bath consisting of water mixed with 2 per cent. or
thereabouts of acetic acid and then boiling say for about an hour.
The colour thus obtained has a somewhat redder tinge than that produced by
anthragallol.
In this printing and dyeing process beta naphthoquinone or the tetra hydroxydi-
naphthyl obtained by a reduction process from dinaphthyl-diquinhydrone may be
employed in place of the dinaphthyl-diquinhydrone.
In both cases a conversion of these substances into the dinaphthyl-diquinhydrone
takes place in the course of the operations.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The employment of dinaphthyl-diqninhydrone, beta-naphtha-quinone or tetra
hydroxydinaphthyl for dyeing or printing purposes.
2. The dyeing and printing of animal or vegetable fibre by means of dinaphthyl-
diquinhydrone beta-naphtho-quinone or tetra-hydroxydinaphthyl with the aid of a
chromium mordant.
Dated this 19th day of August 1890.
J. H. JOHNSON & Co.,
Agents.