Improvements in or relating to the Manufacture or Preparation of Resinous Paints.
Year: 1891

page_text: Date of Application, 21st Oct., 1891-Accepted, 25th Nov., 1891
COMPLETE SPECIFICATION.
Improvements in or relating to the Manufacture or Preparation of
Resinous Paints.
A communication by ALPHONS FREIHERR (Baron) VON PEREIRA, of Stuttgart,
in the Kingdom of Würtemburg, Empire of Germany.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6 Bank Street,
Manchester both in the County of Lancaster and 323 High Holborn in the
County of Middlesex Civil Engineer, 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 order to complete paintings which have been commenced with distemper, a
coating of special varnish is necessary, or else they must be gone over again with
oil or resin colours in order to increase their transparency and durability.
Many artists prefer and employ the latter process as it gives considerable
increase of transparency, but it possesses this drawback, that the oil colours or
oil resin colours become dull in time and the transparency of the picture suffers.
Pure resin colours, however, without the addition of a fatty oil, which do not
possess the foregoing drawbacks have, it is believed, been hitherto unknown in
painting and have never been manufactured or sold.
The object of this invention is therefore to enable such a pure resin colour
being procured by artists or painters, and yet, when such a colour (without the
addition of fatty oils) is employed, the paintings will neither become dark nor
their surface crack, nor will their transparency and durability be interfered with.
The composition or mixture with which, when this new resin colour or paint is
being prepared, it is to be rubbed up consists of:
325 grams of copaiba balsam
25 do. of lavender essence
15 do. of mastic
15
do. of dammara resin.
This composition combines the brittleness of the resin with the ductility and
softness of the copaiba balsam, and yet, in the paint manufactured therefrom,
neither one nor the other of these two properties will predominate. These resin
colours dry completely in about 24 hours, even when they are laid on thickly, and
they possess a much greater clearness, adhesiveness, permanency and durability
than oil or other resin colour as experiments on glass plates have demonstrated.
They will therefore be found excellent for painting on glass and metal even when
employed by themselves.
When using these new resinous paints in distemper painting, they can, without
any hesitation, be again further painted on with distemper, as it is immaterial
whether the painting be done again on fixed, that is, varnished distemper colours,
with distemper colour (as in the process described in the main in English Patent
No. 6805 of 1890) and then be again changed to resinous colours by the applica-
tion of a fixing or varnish on the canvas, or whether it be painted over with
resinous colours which are completely in accord with the varnishes.
The dry distemper colour is, in the former case, saturated on the canvas with
resin, whilst, in this case, the paint is employed already worked up with resin
solution.
If it be desired to impart to the surface of the picture a faint brilliancy, a little
oil is added to the resinous colour or paint, it is not the same thing, as regards
permanency and clearness of tones and the durability of the picture, whether

page_text: the paint be mixed with oil, or whether the paint already mixed with an ether
solution of resin be diluted with a little oil, in which case much less oil comes onto
the picture.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
The improvements in or relating to the manufacture or preparation of resinous
paints which consist in rubbing up with the colour a composition or mixture of
copaiba balsam, lavender essence, mastic and dammara resin, substantially as and
for the purposes hereinbefore described.
Dated this 90th dex of October 1901
WM. P. THOMPSON & Co.,
Agents for the Applicant.