Production of Coloring Matters.
Year: 1893

page_text: Date of Application, 16th Mar., 1893
Complete Specification Left, 16th Dec., 1893-Accepted, 20th Jan., 1854
[Communicated from abroad by THE FARBWERKE vormals MEISTER LUCIUS
AND BRUNING, of Hoechst a Main, in the Empire of Germany, Manufacturers.]
Production of Coloring Matters.
I, OLIVER IMRAY of No. 28 Southampton Buildings, in the County of London,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
In an analogous manner to that described for dinitro-chloro-benzene in another
application for Letters Patent No. 1982002 other chloro-nitro-derivatives of the
aromatic hydro-carbons, such as for example picryl-chloride, di-nitro-chloro-toluols,
nitro-benzyl-chlorides etc. etc. act under certain conditions, upon tetra-ethyl- or tetra-
methyl-ineta-amido-phenol-phthaleine, forming novel body-colours, which produce
on tanned cotton shades somewhat bluer and by far faster, and on wool shades
essentially yellower, than those produced with rhodamine.
The coloring matters are easily soluble in alcohol and acetic acid; some of them
are easily soluble in water whereas others are soluble with difficulty in this
solvent
The coloring matters produced from tetra-methyl-meta-amido-phenol-phthaleïne
crystallise from their solutions in the form of small crystals, whereas the
corresponding tetra-ethyl compounds could not as yet be obtained in crystalline
form.
EXAMPLE.
A solution of 25 parts by weight of picryl-chloride and 44 parts by weight of
tetra-ethyl-meta-amido-phenol-phthaleine in about 75 parts by weight of alcohol, is
boiled for a few hours, the alcohol is distilled off and the coloring matter, which is
received in the form of a tenacious mass, is dried as it is or it is previously dissolved
in diluted hot hydrochloric acid, filtered, and precipitated from the filtrate by means
of common salt.
Dated this 16th day of March 1893.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Production of Coloring Matters.
I, OLIVER IMRAY of No. 28 Southampton Buildings in the County of London,
Chartered Patent Agent, 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 :—
In an analogous manner to that described for dinitro-chloro-benzene in the
Specification No. 19820 of 1892 other chloro-nitro derivatives of the aromatic
hydrocarbons, such as, for example, picryl-chloride, di-nitro-chloro-toluols, nitro-
benzyl-chlorides etc. etc. act under certain conditions upon tetra-ethyl- or tetra-
methyl-meta-amido-phenol-phthaleine, forming novel body-colors, which produce
on tanned cotton shades somewhat bluer and by far faster, and on wool shades
essentially yellower, than those produced with rhodamine.
TD 077

page_text: The coloring matters are easily soluble in alcohol and acetic acid; some of them
are easily soluble in water, whereas others are soluble with difficulty in this
solvent.
The coloring matters produced from tetra-methyl-meta-amido-phenol-phthaleine
crystallise from their solutions in the form of small crystals, whereas the
corresponding tetra-ethyl compounds could not as yet be obtained in crystalline
form.
EXAMPLE.
A solution of 25 parts by weight of picryl-chloride and 44 parts by weight of
tetra-ethyl-meta-amido-phenol-phthaleïne in about 75 parts by weight of alcohol, is
boiled for a few hours, the alcohol is distilled off and the coloring matter, which is
received in the form of a tenacious mass, is dried as it is, or it is previously dissolved
in diluted hot hydrochloric acid, filtered, and precipitated from the filtrate by means
of common salt.
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 production of novel body colors by the action of chloro-nitro-derivatives
of the aromatic hydrocarbons upon tetra-ethyl- or tetra-methyl-meta-amido-phenol-
phthaleine, substantially as described.
2. The novel body colors produced as above set forth.
ABEL & IMRAY,
Agents for the Applicant.