Improvements in the Manufacture of Cosmetics and Skin Tonics.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Cosmetics and Skin Tonics.
I, CARL VON HUBER, Gentleman, residing at 76, Hasenhaide, in the City of
Berlin, Germany, do hereby declare the nature of this invention to. be as
follows:-
-
My invention relates to the manufacture of cosmetics and skin tonics, espe-
cially of that class usually manufactured with mercury as a base and it is designed
to obviate the difficulties arising from the decomposition of these preparations
which cause them to turn of a dirty grey after being kept for but a short time.
This decomposition which is due to the formation of some mercury in a
metallic state and of chloride of mercury from the proto-chloride originally
present and which in the preparations heretofore in use was usually covered up
by the employment of a white colouring agent in admixture with the prepara-
tion, I entirely overcome in my improved process by the use of entirely pure
not destillated rain water in the various stages of manufacturing of the pre-
paration. The small amount of ammonia salts, principally nitrite and nitrate
of ammonia always present in the rain water, seem to form basic compounds
with the proto-chloride of mercury which causes it to stay of a dazzling snowy
white colour.
In order to manufacture a mercury preparation such as are used for the
removal of freckles, moles and the like and for the softening and general beauti-
fication of the skin, I employ subnitrate of mercury which must be obtained by
the cold process and which I allow to crystallize the crystals being then dissolved
in pure, not destillated rain water and the resulting solution precipitated with a
solution of salt or other soluble chloride in rain water also not destillated.
precipitated proto-chloride of mercury is then washed with not destillated rain
water until free from nitrate of soda, if salt is employed and finally dispensed
either in the dry state or as a paste in mixture with pure not destillated rain
water.
The
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11. 20th dow of November 1899.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
Improvements in the Manufacture of Cosmetics and Skin Tonics.
Carl von Huber, Gentleman, residing at 76, Hasenhaide, Berlin, in the Empire
of Germany, do hereby declare the nature of this invention and in what manner
гр.... 077

page_text: the same is to be performed to be particularly described and ascertained in and
by the following statement:-
My invention relates to the manufacture of cosmetics and skin tonics, for
the removal of freckles, moles and the like, and for softening and general
beautification of the skin, especially for the class of cosmetics usually manufac-
tured with mercury as a base and it is designed to obviate the difficulties arising
from the decomposition of these preparations which cause them to turn of a dirty
grey after being kept for but a short time.
This decomposition which is due to the formation of some mercury in a
metallic state and of chloride of mercury from the proto-chloride originally
present and which in the preparations heretofore in use was usually covered up
by the employment of a white colouring agent in admixture with the prepara-
tion, I entirely overcome in my improved process by the use of pure
undistilled rain water in the various stages of manufacturing of the preparation.
The small amount of ammonia salts, principally nitrite and nitrate of ammonia
always present in the rain water, seem to form basic compounds with the proto-
chloride of mercury giving it a permenent dazzling snowy white color.
The manufacture is carried out as follows:-
1 part of mercury is allowed to flow into two parts of cold nitric acid and after
the generation of brown vapours has ceased, the mixture allowed to cool and
put aside to crystallise, when crystals of mercurous nitrate are deposited. These
crystals are then freed from the solution in the ordinary manner, and dissolved
in pure undistilled rain-water. To the solution obtained a solution of salt or
some other soluble chloride in pure undistilled rain water is added and thus a
snow white deposit of chloride of mercury is obtained, which is then washed
with pure undistilled rain water. It is recommended that for use the pre-
paration be in the form of a paste obtained by mixing it with pure undistilled
rain water. The preparation will retain its pure white colour when kept a long
time and does not change in the light.
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
A preparation of mercury for cosmetic purposes prepared by dissolving mer-
curous nitrate produced by the cold process in pure undistilled rain water, pre-
cipitating the solution with a solution of a soluble chloride in pure undistilled
rain water, and afterwards washing the precipitate which consists substantially
of chloride of mercury, with pure undistilled rain water substantially as described.
Dated this 31st day of July 1900.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.