Year: 1886

page_text: I, FRIEDRICH WENDLING of Munich in the German Empire, Chemist do hereby
declare the nature of my said invention to be as follows :
The object of my invention is to manufacture improved paints for resisting
atmospheric influence and variations of temperature; such paints being also
washable.
In carrying out the said invention, I form in the first instance a binding body
for the paint, for which purpose I make use of the following substances:
About 80
parts of potash or soda water-glass.
Fluoride of lime.
Cryolite.
15 to 25
"
"
"
10
"
"
"
15 to 10
"
"
"
"
20 to 15
10
12
"
Marble or silicate of magnesia.
Carbonate of lime.
"
"
"
Phosphate of lime.
These materials are finely pulverized and well mixed together. This binding
body is used in the form of a powder. The paint has to be made of such a
consistency that it is not affected by the addition of caustic potash.
To 100 parts of coloring matter, 200 parts of the above binding body is added,
the whole being well stirred and mixed, and afterwards passed through a sieve.
In order to prepare the paint for use, the above mixture is further mixed with
a paste of caustic potash, in the proportion of about one part of paint to two parts
of caustic potash, and sufficient water is added to produce the proper consistency;
the whole is then again well mixed and passed through a sieve.
The paint is applied in the same manner as ordinary paint.
In order to effect the hardening of the paint, after laying it on the surface, it is
washed several times about 24 hours after finishing the painting, or as soon as the
same is getting dry. Hot water is for this purpose preferred to cold water.
The hardening of the paint, so as to enable it to become permanent, is obtained
by adding to the water used for washing the painted surfaces, about 15 per cent
of potash, or soda water-glass.
The process of hardening is mainly due to the formation of silicate of lime,
which effect arises when carbonate of lime is exposed to the influence of a solution
of silicate of potash.

page_text: The carbonic acid in the air acts upon the silicate of potash the silicic acid com-
bining with the lime which is present in large quantities. The carbonic acid
combines very slowly with the lime of the pulverized carbonate of lime, by freeing
from it some of the water, which again acts upon fresh portions of the silicate of
potash. Another process in this combination arises through the decomposition of
cryolite by lime in the well known manner; finely divided fluoride of lime being
formed, which is united with the silicate of potash.
For the reason that all the above named changes and combinations progress only
slowly, by the continual operation of the carbonic acid in the air, and its humidity
(for which reason the washing of the paint is recommended) the paint obtains its
final hardness and permanent character only after a certain lapse of time.
The superiority of the paint, prepared as herein before described, consists in its
resistance to the influence of the weather, its suitability for being washed, its
brilliancy of tone, and its cheapness.

page_text: I, FRIEDRICH WENDLING of Munich in the German Empire Chemist, do hereby
declare the nature of said 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 my invention is to manufacture improved paints for resisting
atmospheric influence and variations of temperature such paints being also
washable.
In carrying out the said invention, I form in the first instance a binding body
for the paint, for which purposes I make use of the following substances;
About 30
parts of potash or soda water glass.
Fluoride of lime.
Cryolite.
15 to 25
"
"
10
"
"
15 to 10
"
"
Marble or silicate of magnesia.
20 to 15
"3
"
10
"
»
Carbonate of lime.
Phosphate of lime.
These materials are finely pulverised and well mixed together. This binding
body is used in the form of a powder. The paint has to be made of such a
consistency that it is not affected by the addition of caustic potash.
To 100 parts of coloring matter, 200 parts of the above binding body is added,
the whole being well stirred and mixed and afterwards passed through a sieve.
In order to prepare the paint for use the above mixture is further mixed with
a paste of caustic potash, in the proportion of about one part of paint to two parts
of caustic potash, and sufficient water is added to produce the proper consistency;
the whole is then again well mixed and passed through a sieve.
The paint is applied in the same manner as ordinary paint.
In order to effect the hardening of the paint after laying it on the surface, it is
washed several times about 24 hours after finishing the painting, or as soon as the
same is getting dry. Hot water is for this purpose preferred to cold water..
The hardening of the paint so as to enable it to become permanent, is obtained
by adding to the water used for washing the painted surfaces about 15 per cent of
potash, or soda-water glass.
The process of hardening is mainly due to the formation of silicate of lime
which effect arises when carbonate of lime is exposed to the influence of a solution
of silicate of potash.
The carbonic acid in the air acts upon the silicate of potash, the silicic acid
combining with the lime which is present in large quantities. The carbonic acid
combines very slowly with the lime of the pulverized carbonate of lime by freeing
from it some of the water which again acts upon fresh portions of the silicate of
potash. Another process in this combination arises through the decomposition of
cryolite by lime in the well known manner: finely divided fluoride of lime being
formed, which is united with the silicate of potash..

page_text: For the reason that all the above named changes and combinations progress only
slowly, by the continual operation of the carbonic acid in the air, and its humidity
(for which reason the washing of the paint is recommended) the paint obtains its
final hardness and permanent character only after a certain lapse of time.
The superiority of the paint, prepared as herein before described, consists in its
resistance to the influence of the weather, its suitability for being washed, its
brilliancy of tone, and its cheapness.
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 method of preparing dry powder composed of potash or soda water glass,
fluoride of lime, cryolite, marble or silicate of magnesia, carbonate of lime and
phosphate of lime, mixed with color and used with caustic potash: and after
application treated with hot or cold water or a solution of potash, or soda water
glass, and the use of the same substantially as and for the purposes hereinbefore
described.
2. The combination of the several and respective materials or of some of them,
and the application of the same substantially as and for the purposes hereinbefore
described.