An Improved Manufacture of Saponifiable Fatty Matter from Wool Fat.
Year: 1890

page_text: Date of Application, 7th Aug., 1890
Complete Specification Left, 14th Apr., 1891- Accepted, 23rd May, 1891
PROVISIONAL SPECIFICATION.
An Improved Manufacture of Saponifiable Fatty Matter from
Wool Fat.
I, Dr. ISRAEL Roos, of Frankfort on Maine, Germany, Chemist, do hereby
declare the nature of this invention to be as follows:-
According to this invention a yellowish white fatty matter is produced from
commercial wool fat which is of a dark brown colour and which in this condition is
either not at all applicable to the manufacture of soap, or can only be used for the
most inferior sorts. The said improved product on the other hand can be used
either alone, or mixed with other suitable saponifiable fats, for the production of
light-colored kinds of soap.
The process for the production of such material is based on the discovery that if,
by means of a soda solution, or other substance producing the saponification of the
wool fat, only a partial saponification hereof be effected and the resulting emulsion
be mixed with water and allowed to stand, the non saponifiable cholesterines &c.
will collect at the top of the deposited saponified fatty acids, which are partly in
solution and partly in emulsion, so that by this means a separation and precipitation
of the fatty product from the non saponifiable constituents can be effected.
In practically carrying out this process, 100 parts by weight of wool fat is stirred
together with 100 parts of boiling water until the wool 'fat is melted; 4 parts of
crystallized carbonate of soda dissolved in 20 parts of water are then added and the
whole is stirred together at a temperature above the melting point of the wool fat
until a complete emulsion of the wool fat is effected. The liquid is then boiled and
is added to 400 parts of water under continued stirring.
If the liquid be then allowed to stand, the above mentioned separation will take
place, a layer of the non saponifiable cholesterines &c. collecting at top while below
the same the saponified fatty acids, partly dissolved and partly in emulsion, will be
deposited.
These are drawn off and to them are added dilute acids, whereupon the resulting
fatty product will be separated, which will only require to be well washed one or
more times.
.
If necessary, the product obtained can be subjected repeatedly to the above
process, for effecting its further purification.
The fatty product, having a yellowish white to perfectly white color, can then
be used, either alone or mixed with other fats and oils, for the preparation of soaps
and other saponaceous products.
The residues obtained, which, as a rule, do not exceed about 10 per cent. of the
raw materials employed, can be employed for the manufacture of wax and other
purposes.
Dated this 7th day of August 1890,
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE
SPECIFICATION.
An Improved Manufacture of Saponifiable Fatty Matter from
Wool Fat.
I, Dr. ISRAEL Roos, of Frankfort on Maine, Germany, Chemist, 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 :-
According to this invention a yellowish white fatty matter is produced from
[Price 4d 1

page_text: commerciai wool fat which is of a dark brown colour and which in this condition is
either not at all applicable to the manufacture of soap, or can only be used for the
most inferior sorts. The said improved product on the other hand can be used either
alone, or mixed with other suitable saponifiable fats, for the production of light
colored kinds of soap.
The process for the production of such material is based on the discovery that if,
by means of a carbonate of soda solution or of another solution, such as caustic
soda, caustic potash, ammonia, potassium carbonate, and the like, producing the
saponification of wool fat or of substances containing wool fat, only a partial
saponification hereof be effected and the resulting emulsion be mixed with water
and allowed to stand, the non-saponifiable cholesterines &c. will collect at the top
of the deposited saponified fatty acids which are partly in solution and partly in
emulsion, so that by this means a separation and precipitation of the fatty product
from the non-saponifiable constituents can be effected.
One method for carrying out this process in practice, is, for instance, thus:-
100 parts by weight of wool fat are stirred together with 100 parts of boiling
water until the wool fat is melted; 4 parts of crystallized carbonate of soda
dissolved in 20 parts of water are then added and the whole is stirred together at a
temperature above the melting point of the wool fat until a complete emulsion of
the wool fat is effected. The liquid is then boiled and there must be added
400 parts of water under continued stirring.
If the liquid be then allowed to stand, the above mentioned separation will take
place, a layer of the non-saponifiable cholesterines & c. collecting at top while below
the same the saponified fatty acids, partly dissolved and partly in emulsion, will be
deposited.
These are drawn off and to them are added dilute acids, whereupon the resulting
fatty product will be separated, which will only require to be well washed one or
more times.
If necessary, the product obtained can be subjected repeatedly to the above
process, for effecting its further purification.
The fatty product, having a yellowish white to perfectly white colour, can then
be used either alone or mixed with other fats and oils, for the preparation of soaps
and other saponaceous products.
The residues obtained, which as a rule, do not exceed above 10 per cent. of the
raw materials employed, can be employed for the manufacture of wax and other
purposes.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what
I claim is
1
A manufacture of saponifiable fatty products of light colour from dark coloured
wool fat or substances containing wool fat, by incompletely saponifying the latter,
separating the soap thus formed which is partly in solution and partly in emulsion,
by the addition of water, and finally decomposing the soap by means of dilute acid,
substantially as described.
Dated this 14th day of April 1891
ABEL & IMRAY,
Agents for the Applicant.