Improved Waterproof Coating for Walls and the like.
Year: 1898

page_text: Date of Application, 10th Jan., 1898
Complete Specification Left, 10th Oct., 1898-Accepted, 17th Dec., 1898
PROVISIONAL DIECIFICATION
An Improved Waterproof Coating for Walls and the like.
I, EUGÈNE TOUSSAINT, of 15³, Boulevard St. Denis, Paris, in the Republic of
France, Manufacturing Chemist, do hereby declare the nature of this invention
to be as follows:-
"
My invention has for its object a new or improved waterproof coating for walls
and the like. I make a mixture consisting of 35 parts of benzine in which are
dissolved 10 parts of resin or gum arabic, one part of bees-wax being added to
the solution.
The coating made by this mixture constitutes a special kind of penetrating
paint, which is used to renew, and render wholesome, walls from which saltpetre
and the like is efflorescing, and to prevent and stop the formation of such salt-
petre, preventing dampness, whether arising from the outside or the inside of
the wall.
It may also be used as a protecting coating for wood, leather, metals, and the
like.
An Improved Waterproof Coating for Walls and the like.
I, EUGÈNE TOUSSAINT, of 42, Boulevard Ornano, Clichy, Department of Seine,
late of 15bis, Boulevard St. Denis, Paris, France, Fabricant, 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 subject of the present invention consists in a hydrocarbon coating charac-
terized by a property of penetrating the materials to which it is applied, whether
they contain saltpetre or not, of hardening them and rendering them impermeable.
The hydrocarbon coatings or coverings employed up to the present time simply
form a film upon the surface of the part covered or coated therewith without
penetrating it. This film, under the progressive action of humidity, soon rises
up, forms blisters and falls off.
The hydrocarbon coating material which forms the subject of the present
invention produces on the surface of the materials a crust the thicker in pro-

page_text: portion as the penetration has been the more considerable; which penetration
increases with the state of degradation of the materials.
The crust thus formed acquires a very great hardness, and its adherence to a
wall is perfect. The coating or covering material is prepared by dissolving in
an essence or a hydrocarbon of any description, benzine for example, bees wax
and certain proportion of Judean bitumen. The effect of the bitumen is to harden
and to give solidity even to the worst plasters, and conjointly with the wax to
ensure impermeability.
The bees wax may in some cases be replaced by cerasin, paraffin, or other pro-
ducts of a like nature. With regard to the Judean bitumen, for this may be
substituted, or mixed therewith, a gum or resin of any kind, for example danmar
gum, or colophany, when it is desired to obtain coatings either colourless or very
slightly coloured."
As a general rule a good coating material will be obtained if the weights of
the substances employed in the mixture be in the following proportions;
The above proportions may naturally be varied within certain limits without
the quality of the coating being affected; they are merely given by way of
example and simply to afford an idea of the product and they may be modified
in accordance with the uses which it is intended to make of the covering or
coating material.
In order to obtain durable results it is necessary to liberally coat the surfaces
to be treated, in order to cause the materials to absorb the largest possible amount
of the coating and thus to augment the penetration. This coating may be
employed on all materials: cements, plasters, stones; upon woods which they
preserve from decay; upon metals which they protect from oxidation. It also
admits of leather being rendered impermeable, and papers so treated forms excel-
lent packing papers both strong and impermeable.
This coating material mixed in a suitable manner with white lead, or zinc
white, with the addition of the colouring pigments employed in paint, forms an
excellent hydrocarbon paint, capable of resisting moisture, and which, at the
termination of a very short time, acquires a very great hardness.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what
I claim is:-
A hydrocarbon coating having the property of penetrating the materials upon
which it is applied, and of rendering them impermeable by forming a crust
which prevents the passage of any damp, applicable for the preservation of woods,
leathers, and metals, to the rendering impermeable of papers, and composed of
a dissolution of bees wax or its equivalent and of Judean bitumen, gum, or resin
of any description, in benzine, essence, or any hydrocarbon in proportions which
may be varied with the use to be made of the coating, and the average composi-
tion of which is as follows: benzine 35, resin or gum of any description 10,
wax 1.
Dated this 10th
1000
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicant.