An Improvement in the Manufacture of Oil Varnish.
Year: 1889

page_text: Date of Application, 8th June, 1889
Complete Specification Left, 21st Jan., 1890-Accepted, 22nd Feb., 1890
PROVISIONAL SPECIFICATION.
An Improvement in the Manufacture of Oil Varnish.
I, HUGO NOERDLINGER, of Stuttgart, Wurtemberg Germany, Chemist do hereby
declare the nature of this invention to be as follows:-
This invention has for its object to lessen to a very great extent the dangers to which
the manufacture of oil varnish is subject, as also the losses arising through evaporation
in boiling the varnish.
The invention consists in dividing the manufacture of varnish into two stages, the
one of which treats only with a small portion of the varnish, under heating, while the
other is carried through entirely without heating.
This division of the process is rendered possible by the fact that, as a rule, during
the first stage of varnish manufacture a different description of oil is employed from
that which is used in the second stage, and that in the former certain means for drying
are employed.
For the above purpose 100 kilos of a non-volatile oil, preferably fatty resin oil, are
mixed with about 20 kilos of saturated resin soap, under the action of heat, until it
is dissolved. The turbid mass, which is liquid when hot, is allowed to stand, and after
cooling the supernatent clear liquid is decanted from the sediment.
A perfectly liquid body is thus obtained, which does not dry up and which can be
converted into a rapidly drying varnish by adding thereto, in the cold, from ten to 100
times the quantity of a drying oil such as linseed oil.
During the first stage the simultaneous purification of the resin acid or fatty-acid
soap, is effected, as the impurities contained therein remain undissolved, while the
pure soaps are dissolved.
In place of the resin soap may also be used a saturated lime,-Strontia-Barium or
metal salt of an oil or of a fatty acid &c., added to the oil which is to be boiled. The
latter can also be boiled directly with an alkaline earth, or metallic oxide or chloride,
but in that case a quantity of free resin or fatty acid sufficient to bind the base,
must be added.
It is essential that the non-drying oil should contain a greater quantity of a resin
oil or fatty acid salt dissolved therein than would be the case if only the quantity of
free acid contained in the oil were bound by an alkaline earth or metallic oxide &c.
Dated this 8th day of June 1889.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in the Manufacture of Oil Varnish.
I, HUGO NOERDLINGER, of Stuttgart, Wurtemberg, Germany, Chemist, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:-
This invention has for its object to lessen to a very great extent the dangers to which
the manufacture of oil varnish is subject, as also the losses arising through evaporation.
in boiling the varnish.
The invention consists in dividing the manufacture of varnish into two stages, the
one of which treats only with a small portion of the varnish under heating, while the
other is carried through entirely without heating.

page_text: This division of the process is rendered possible by the fact that, as a rule, during
the first stage of varnish manufacture a different description of oil is employed from
that which is used in the second stage and that in the former certain means for drying
are employed.
For the above purpose 100 kilos of a non-volatile oil, preferably fatty resin oil, are
mixed with about 20 kilos of saturated resin soap, under the action of heat, until it
is dissolved. The turbid mass, which is liquid when hot, is allowed to stand, and
after cooling, the supernatent clear liquid is decanted from the sediment.
A perfectly liquid body is thus obtained which does not dry up and which can be
converted into a rapidly drying varnish by adding thereto, in the cold, from 10 to
100 times the quantity of a drying oil such as linseed oil.
During the first stage the simultaneous purification of the resin acid or fatty acid
soap, is effected, as the impurities contained therein remain undissolved, while the pure
soaps are dissolved.
In place of the resin soap may also be used a saturated lime-Strontia-Barium or
metal salt of an oleic or fatty acid &c., added to the oil which is to be boiled. The
latter can also be boiled directly with an alkaline earth, or metallic oxide or chloride,
but in that case a quantity of free resin- or fatty-acid sufficient to bind the base,
must be added.
It is advisable that the non drying oil should contain a greater quantity of a resin-
acid, oloic-acid- or fatty-acid-salt dissolved therein than would be the case if only the
quantity of free acid contained in the oil were bound by an alkaline earth or metallic
oxide &c.
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: :-
The method of preparing oil varnish by first mixing together under heating non
volatile oil with a saturated resin-acid, oleic-acid, or fatty-acid-salt, and after cooling
and decantation, mixing this compound in the cold with a considerably larger quantity
of a drying oil, substantially as described.
Dated this 21st day of January 1890.
ABEL & IMRAY,
Agents for the Applicant.