CERTAIN COMPOUNDS FOR DISSOLVING RESINS AND GUM RESINS, AND FOR OTHER PURPOSES FOR WHICH ALCOHOL OR METHYLATED SPIRIT IS NOW EMPLOYED
Year: 1875

page_text: LETTERS PATENT to Murdock Mackay, of Mark Street, Finsbury, in
the County of Middlesex, Practical Chemist, for the Invention of
" CERTAIN COMPOUNDS FOR DISSOLVING RESINS AND GUM RESINS, AND FOR
OTHER PURPOSES FOR WHICH ALCOHOL OR METHYLATED SPIRIT IS NOW
EMPLOYED."
Scaled the 16th July 1875, and dated the 19th January 1875.
PROVISIONAL CPECIFICATION left by the said Murdock Mackay at
the Office of the Commissioners of Patents, with his Petition, on
the 19th January 1875.
I, MURDOOK MACKAY, of Mark Street, Finsbury, in the County of
5 Middlesex, Practical Chemist, do hereby declare the nature of the said
Invention for "CERTAIN COMPOUNDS FOR DISSOLVING RESINS AND GUM RESINS,
AND FOR OTHER PURPOSES FOR WHICH ALCOHOL OR METHYLATED SPIRIT IS NOW
EXPLOYED," to be as follows:-
-
It is well known that certain of the resins and gum resins are soluble
O by particular solvents and others by other particular solvents, so that

page_text: amongst those solvents hitherto in use the one which will dissolvo one
resin or gum resin will frequently not dissolve another.
One object of the said Invention is to obtain solvents generally if not
universally applicable to resins and gum resins, and I believe my com-
pounds to be capable of application as solvents to shellac, copal, kowrie,
sandric, elemi, mastic, benzoin, colophone, and other resins at present
used, or which may be found to be useful in combination with the resins
now used, and probably some others not now in general use.
And a further object of the said Invention is to obtain a substituto
or substitutes for alcohol or methylated spirit in procuring extracts from
vegetable, animal, and mineral matters for heating and preserving
purposes; also in the manufacture of aniline colors and in other uses or
purposes to which alcohol or methylated spirit is applicable, the which
further object I believe to be attained by the employment of my said
compounds. These compounds are available as solvents with or without
heat. The variety I. produce is with the view to cheapness, quality, or
convenience. The term methylated spirit, as hercin-after used, is
intended to include not only the article of commerce known by that
name, but also its component parts and proportions which may bo
substituted for it.
The Invention consists in adding to methylated spirit one or other of
the two combinations herein-after stated, or a certain article hercin-after
named, and stirring till the mixture becomes opaque or turbid, and then
adding more methylated spirit till it becomes clear. Those combinations
I term No. 1 and No. 2.
No. 1 consists of one part of benzoline to six parts of mineral or coal
naptha, or one part of turpentine to six parts of mineral or coal naptha,
or half one part of benzoline and half one part of turpentine may be
substituted for one whole part of either. Solvents prepared with No. 1
combination I prefer for varnishes intended for outside work.
Combination No. 2 consists of one part of turpentine to three parts
of benzoline, and solvents prepared with this combination I prefer for
hard resins, and where a light color is desired.
The certain article above referred to is benzoline, which I employ in
the proportion of one part of benzoline to three parts of methylated
spirit, or any other hydrocarbon which will combine with methylated

page_text: spirit may be substituted for benzoline, the proportions varying according
to the nature of the hydrocarbon employed, but I prefer that com-
mercially known as benzoline. Varnishes made from solvents prepared
in this manner I prefer for inside work and for polishers. The resins
require only to be placed in the solvent; they then dissolvo readily and
become clear by standing.
The proportions above stated may be varied, and indeed will sometimes
require to be varied according to the purity of the hydrocarbons or the
quality of the substance intended to be dissolved.
The compound resulting from the addition of benzolino or other
hydrocarbon to methylated spirit is the one I prefer employing for
purposes to which alcohol or methylated spirit is now employed, but the
other compounds may also be similarly used.
Instead of the employment of combination No. 1 with methylated
spirit I sometimes employ mineral or coal naptha.
The ingredients may be mixed in an iron or copper or woodon or other
-
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Murdock Mackay, in the Great Scal Patent
Office on the 17th July 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MURDOCK
MACKAY, of Mark Street, Finsbury, in the County of Middlesex,
Practical Chemist, sond greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
5 Letters Patent, bearing date the Nineteenth day of January, in the year
of our Lord One thousand eight hundred and seventy-five, in the thirty-
ninth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Murdock Mackay, Her special
licence that I, the said Murdock Mackay, my executors, admini-
strators, and assigns, or such others as I, the said Murdock Mackay,
my executors, administrators, and assigns, should at any time agreo
with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,

page_text: use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
" CERTAIN COMPOUNDS FOR DISSOLVING RESINS and Gum RESINS AND FOR OTHER
PURPOSES FOR WHICH ALCOHOL OR Methylated SpiRIT IS NOW EMPLOYED,” upon
the condition (amongst others) that I, the said Murdock Mackay, my |
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately :
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Murdock Mackay, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement :-
It is well known that certain of the resins and gum resins are soluble
by particular solvents and others by other particular solvents, so that
amongst those solvents hitherto in use the one which will dissolve onc
resin or gum resin will frequently not dissolve another.
1
One object of the said Invention is to obtain solvents generally if not a
universally applicable to resins and gum resins, and I believe my com-
pounds to be capable of application as solvents to shellac, copal, kowric,
sandric, elemi, mastic, benzoin, colophone, and other resins at prosent
used or which may be found to be useful in combination with the resins
now used and probably some others not now in general use.
2
And a further object of the said Invention is to obtain a substitute or
substitutes for alcohol or methylated spirit in procuring extracts from
vegetable, animal, and mineral matters for heating and preserving
purposes; also in the manufacture of aniline colors and in other uses or
purposes to which alcohol or methylated spirit is applicable, the which 8
further object I believe to be attained by the employment of my said
compounds. These compounds are available as solvents with or without
heat. Tho variety I produce is with the view to cheapness, quality, or
convenience. The term methylated spirit, as herein-after used, is
intended to include not only the article of commerce known by that 3
name, but also its component parts and proportions which may be sub-
stituted for it.

page_text: The Invention consists in adding to methylated spirit one or other of
the combinations herein-after stated, or a certain article herein-after
named, and stirring till the mixture becomes opaque or turbid, and then
adding moro methylated spirit till it becomes clear. These combinations
I term No. 1 and No. 2.
No. 1 consists of one part of benzoline to six parts of mineral or coal
naptha, or one part of turpentine to six parts of mineral or coal naptha,
or half one part of benzoline and half one part of turpentine may be
substituted for one whole part of either. Solvents prepared with No. 1
combination I prefer for varnishes intended for outside work.
Combination No. 2 consists of 1 part of turpentine to three parts of
benzoline, and solvents prepared with this combination I prefer for hard
resins and where a light color is desired.
The certain article above referred to is benzoline, which I employ in
the proportion of one part of benzoline to three parts of methylated
spirit, or any other hydrocarbon which will combine with methylated
spirit may be substituted for benzoline, the proportions varying according
to the nature of the hydrocarbon employed, but I prefer that com-
mercially known as benzoline. Varnishes made from solvents prepared
in this manner I prefer for inside work and for polishers. The resins in
some cases may be ground fine, and require only to be placed in the
solvent; they then dissolve readily and become clear by standing.
The proportions above stated may be varied, and indeed will sometimes
require to be varied according to the purity of the hydrocarbons, and a
small portion of camphor added, according to the quality of the substance
intended to be dissolved.
The compound resulting from the addition of benzoline or other
hydrocarbon to methylated spirit is the one I prefer employing for
purposes to which alcohol or methylated spirit is now employed, but tho
other compounds may also be similarly used.
Instead of the employment of combination No. 1 with methylated
spirit I sometimes employ mineral or coal naptha.
The ingredients may be mixed in an iron or copper or wooden or other
vessel, and I prefer it being covered to prevent evaporation.
For oil varnishes I dissolve drying oils or oleaginous matter, with or
without camphor, in any of the said solvents, and then add the powdered

page_text: gums, or a varnish may be first made with the solvents and gums, and
compound of oil or oleaginous matter, with or without camphor, dissolved
in any of the solvents, methylated spirit or spirit of turpentine, and then
added to the spirit varnish; also dryers may be added to any of the
above compositions.
In witness whereof, I, the said Murdock Mackay, have hereunto
set my hand and scal, this Seventeenth day of July, in the
year of our Lord One thousand eight hundred and seventy-
five.