Improvements in or connected with the Manufacture of Varnishes, Paints and the like.
Year: 1897

page_text: Date of Application, 10th Aug., 1897-Accepted, 11th Sept., 1897
COMPLETE SPECIFICATION.
Improvements in or connected with the Manufacture of Varnishes,
Paints and the like.
I ISRAEL GOLDBLUM of No. 22, Barnowa, Lublin in Russian Poland,
Manufacturer, 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:-
This invention relates to the manufacture of varnishes, paints and the like and
consists in the preparation and use of a composition which can serve as substitute
for linseed oil varnish and for mixing or preparing paints. This substitute is
prepared by treating a solution of colophony in benzine, benzol or naphtha with
carbonates of alkalis, in the following way. About fifty parts in weight of
powdered colophony are dissolved by stirring, in one hundred parts by weight of
benzol, benzine or naphtha, which is finished in a few minutes, and to the solution
twelve to fifteen parts in weight of coarsely powdered ordinary washing soda or
other alkaline carbonate are added while continually stirring, and the mixture
obtained is finally filtered or decanted.
The composition or varnish substitute prepared in this way combines the
adhesion and cementing quality of colophony with the viscosity or cohesion of a
resin-soda soap, which at the same time softens the stickiness of the colophony
while the added benzine effects an almost instantaneous drying of the paint. The
surfaces covered with this varnish substitute show a fine gloss, are rendered
impermeable to moisture and are free from the disagreeable odour of varnish.
The addition of the substitute to paints lacquers or enamels prepared with linseed
oil reduces their cost in some cases to one half. In some cases the substitute
may be used by itself for manufacturing paints, for instance in the preparation of
white-zinc paint the dry white zinc is preferably mixed directly with the
composition.
For manufacturing washing paints without the admixture of linseed oil as a
carrier the dry colouring substances are preferably mixed with a little boiled
linseed oil to a stiff paste which is left to dry in the air, then ground, and the
powder thus obtained mixed with the substitute prepared as before described.
The paints thus prepared may be used for painting wood, glass, iron, or any other
building materials.
To prevent the too rapid drying of the paints while storing them, a little naphtha
is preferably added to them.
Having now particularly ascertained and described the nature of my said inven-
tion and in what manner the same is to be performed. I declare that what I
claim is:-
1. The process of preparing a substitute for linseed-oil varnish substantially
as herein before described.
2. The process of manufacturing a substitute for linseed-oil varnish by treating
solutions of colophony in benzine benzoi or naphtha with alkaline carbonates
substantially as hereinbefore described.

page_text: 3. The use of a substitute for linseed-oif varnish prepared substantially as
hereinbefore described, for painting wood, glass, iron, or other buildings materials.
4. The use of a substitute for linseed-oil varnish prepared substantially as here-
inbefore described for the preparation of paints-by mixing dry mineral or other
dry colours with said substitute with or without an addition of linseed oil.
Dated this 7th day of August 1897.
R. J. URQUHART,
57, Barton Arcade, Manchester, Consulting Engineer and Patent Agent.