Improvements relating to Siccative Oils and Varnishes.
Year: 1898

page_text: Date of Application, 13th Aug., 1898
Complete Specification Left, 13th June, 1899-Accepted, 13th Aug., 1899
PROVISIONAL SPECIFICATION.
Improvements relating to Siccative Oils and Varnishes.
I, CHARLES WEYGANG, of No. 17, Park Place, Gravesend, in the County of
Kent, Gentleman, do hereby declare the nature of this invention to be as follows:-
The object of this invention is the manufacture of a solid or semi-solid oil
which can be readily transformed into a liquid form in which condition it is
applicable as a vehicle for paints, or as a varnish, or for other purposes for which
ordinary siccative oils are employed. The solid consistence facilitating packing
and transport, obviating loss by leakage, and minimizing risk from fire.
In carrying this invention into practice I take the siccative oil referred to
in the Patents Nos. 3025 and 23,995 % or siccative oils substantially produced
in the manner therein described. I preferably mix therewith a proportion of
linseed, cotton-seed, or similar siccative oils, more generally in proportions of
10 to 25%.
This mixture I thicken by agitation in the air, or by blowing air through it,
preferably applying heat as it becomes tenacious.
The resulting more or less solid oil will readily dissolve in ordinary petroleum,
benzene, turpentine, or the like, and in this condition may be used as a paint
oil, or varnish according to the solvent employed. For instance, with ordinary
petroleum the results would form a useful paint oil, and with benzene, turpen-
tine and the like, it would be more applicable as a varnish.
.Dated this 10th day of August 1898.
CHARLES WEYGANG.
Improvements relating to Siccative Oils and Varnishes.
I, CHARLES WEYGANG, of No. 17, Park Place, Gravesend, in the County of
Kent, Gentleman, 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:-
The object of this invention is the manufacture of a solid or semi-solid oil
which can be readily transformed into a liquid form, in which condition it is
applicable as a vehicle for paints, or as a varnish, or for other purposes for which
ordinary siccative oils are employed.
In carrying this invention into practice I take the siccative oil referred to
in the Specifications No. 3025/94 and 23995/94 or siccative oils substantially
בנס. bנ

page_text: produced in the manner therein described preferably with the admixture of a
certain proportion of vegetable drying oil.
This mixture I thicken by agitation in the air, or by blowing air through it,
preferably applying heat as it becomes tenacious.
The resulting more or less thickened oil can when required for use, be thinned
with petroleum, benzene, turpentine or similar suitable agent when it may be
applied as a paint oil, or varnish, or the like, according to the solvent employed.
For instance with petroleum the result would form a useful paint oil and with
lighter spirit solvents a varnish would be produced.
In detail I proceed for example as follows:-
I first produce a siccative oil substantially as described in the herein before
referred to specifications--that is to say: I make a melt of resin and petroleum,
preferably employing the distillates of the latter of specific gravity between 800
and 820 or thereabouts. The most usual proportion of resin being 1½ parts by
weight to 2 parts of oil. I render the mixture miscible with water by the
gradual and intermittent introduction of alkali and I may introduce the alkali
with this object in any equivalent convenient manner or form, for instance,
the alkali may be combined with a portion of the resin to form a resinous soap
while the remainder of the resin is melted in the petroleum, the two products
being then mixed together. But I obtain the most effectual results by gradually
and intermittently adding a solution of caustic alkali to a melt of resin and
petroleum as particularly set forth in the Specifications 3025 and 23995 of 1894.
This more or less miscible mixture I treat with an agent or agents which will
neutralize the alkali and impart the necessary siccative properties, such as the
acid salts of metals or the salts of some of the carths, or a combination of the
same, such as sulphate of zinc, sulphate of lime or magnesia. The most effectual
for the purpose is sulphate of zinc and in order to cheapen the employment of
this I mostly use it in conjunction with a salt of lime or magnesia more par-
ticularly the sulphates of these and by preference the sulphate of lime. employ
the latter generally in a proportion of to 1 cwt. per 20 cwt. of the miscible oil
and after thoroughly mixing I add a little water, about the equivalent in weight
of the sulphate of lime used, and again after thorough mixture I add gradually
sulphate of zinc under continuous energetic mixing until the whole of the alkali
is neutralized. I then find it beneficial to heat the mixture to about 200° F.
after which I allow it to settle and subsequently decant the clear oil.
The sulphate of lime referred to is employed in the form of powder & by
preference the calcined.
To the resulting siccative oil I generally prefer to add a certain proportion of
an elastic vegetable drying oil such as linseed, cotton seed or similar oil. More
generally I employ boiled linseed oil in a proportion of 20 to 30 per cent.
This mixture I now resinify or oxidize to a thick or nearly solid consistence
by agitating it in the air or blowing air through it until it has the desired thick
consistence and this operation I find is facilitated by keeping it warm or slightly
hot when it begins to become tenacious.
As a rule the more the mixture is resinified or oxidized the quicker its drying
properties afterwards.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. The herein before described method of preparing an oil suitable as a vehicle
for paints, or as a varnish, or for similar purposes, by firstly resinifying or
oxidizing an oil mainly composed of petroleum and resinous matter by blowing
such oil with air or agitating it in air, or otherwise conveniently exposing it to
the action of air until a thick consistence has been attained, and subsequently
thinning such thickened oil with suitable solvents substantially as described.
2. The process for the manufacture of a more or less resinified or oxidized oil

page_text: applicable as a vehicle for paints or as a varnish or for other purposes for which
ordinary drying oils are used substantially as hereinbefore described.
3. The manufacture of siccative oils and varnishes substantially as herein
described.
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