Improved Process for the Separation of an Extract called “Lanoresin,” or Gum Resin, from the Waste Waters from Wool Washing_and Combing Mills, and for the Production of the same in a Pure Condition.
Year: 1889

page_text: Date of Application, 21st Nov., 1889
Complete Specification Left, 19th Aug., 1890-Accepted, 20th Sept., 1890
PROVISIONAL SPECIFICATION.
"
Improved Process for the Separation of an Extract called “Lanoresin,”
or Gum Resin, from the Waste Waters from Wool Washing_and
Combing Mills, and for the Production of the same in a Pure
Condition.
We CARL LAHUSEN and CARL FEUERLEIN of the North German Wool Carding
and Worsted Yarn Spinning Factory, Delmenhorst, near Bremen in the Empire of
Germany, do hereby declare the nature of this invention to be as follows :—
It seems to have completely escaped observation that another hitherto unknown
substance is contained in the waste water from wool washing and combing mills, in
addition to wool grease, soaps and alkalies, which substance is the cause of several
only now explainable appearances in the treatment of the waste water in question.
The hitherto unknown "Lanoresin" contained in the waste water is an extract or
gum resin of a dark colour, which is insoluble in benzine, ether, chloroform,
bisulphuret of carbon, acetone or concentrated alcohol, but soluble in water, diluted
alcohol, or wool grease, and which can be obtained in so dry a condition that it can be
pulverised.
"Lanoresin" is extracted from the waste water in the following manner :-
Sulphuric acid is first added, to the waste water from wool washing and combing
mills, for a sufficient time to cause a deposit to be formed. This deposit, after
separation from the remaining water, forms the so-called fat sludge or raw material
or raw product for the recovery of the "Lanoresin."
This product consists, in addition to impurities that may be in it, of fatty acids,
neutral wool grease and the substance called "Lanoresin."
This fat sludge is soaped, and then, either before or afterwards, mixed with a
3 to 5 fold quantity of benzine, and whilst exposed to heat, stirred up until a uniform
mixture is produced. Then without stopping the agitation, alcohol of about
95 per cent. is added in a quantity equal to about a tenth of the quantity of benzine
employed. When the mixture has become quite uniform, the agitation is stopped,
and after standing for some time, two layers are formed, namely, an upper one, of a
solution of wool grease, and a lower one containing the "Lanoresin."
This lower layer, after the wool grease solution has been drawn off, will still
contain some wool grease, the same process of treatment is therefore repeated with
it as with the fat sludge until the remaining benzine contains absolutely no wool
grease. Should this not be completely accomplished, the "Lanoresin," through the
presence of wool grease, has the property of being dissolved along with this wool
grease, in grease dissolving substances, and thus its production in a pure state is
prevented.
After having dissolved in this manner and separated from the bottom layer all
the wool grease, the bottom layer is freed, by means of distillation, from the volatile
substances still adhering thereto, dried, and any soap still contained therein is
completely removed by the aid of pure alcohol. Then, through extraction by water,
diluted alcohol or any other substance capable of dissolving it, the "Lanoresin,"
is obtained. Ether, chloroform or bisulphuret of carbon can be employed in place
of benzine.
"
As deposit producing substances, there can be used ethyl- methyl- or amyl-
alcohol, in general, any one of the series of alcohols which are represented by the
general formula C₁ H₂ + 20.
The quantity and strength of the alcohol to be employed do not always remain the
same, but must, by reason of the great variety in the composition of the grease

page_text: sludge which is caused by the different sorts of wools from which it is obtained, be
previously determined in each separate case.
Dated this 20th day of November 1889.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improved Process for the Separation of an Extract called "Lanoresin,"
or Gum Resin, from the Waste Waters from Wool Washing and
Combing Mills, and for the Production of the same in a Pure
Condition.
We, CARL LAHUSEN and CARL. FEUERLEIN of the North German Wool Carding
and Worsted Yarn Spinning Factory, Delmenhorst, near Bremen, in the Empire of
Germany 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:
It seems to have completely escaped observation that another hitherto unknown
substance is contained in the waste water from wool washing and combing mills.
in addition to wool grease, soaps and alkalies, which substance is the cause of
several only now explainable appearances in the treatment of the waste water in
question.
The hitherto unknown "Lanoresin" contained in the waste water is an extract or
gum resin of a dark colour, which is insoluble in benzine, ether, chloroform; bisul-
phuret of carbon, acctone or concentrated alcohol, but soluble in water, diluted alcohol,
or wool grease, and which can be obtained in so dry a condition that it can be
pulverised.
"Lanoresin" is extracted from the waste water in the following manner :-
Sulphuric or other mineral acid is first added, to the waste water from wool
washing and combing mills, for a sufficient time io cause a deposit to be formed.
This deposit, after separation from the remaining water, forms the so-called fat sludge
or raw material for the recovery of the "Lanoresin."
This product consists, in addition to impurities that may be in it, of fatty acids,
neutral wool grease and the substance called "Lanoresin."
This fat sludge is soaped, and then, either before or afterwards, mixed with a
3 to 5 fold quantity of benzine, and whilst exposed to heat, agitated until an entirely
uniform mixture is produced. Then without stopping the agitation, alcohol of about
95 per cent. is added in a quantity equal to about a tenth of the quantity of benzine
employed. When the mixture has become quite uniform, the agitation is stopped,
and after standing for some time, two layers are formed, namely an upper one, of a
solution of wool grease, and a lower one containing the "Lanoresin."
This lower layer, after the wool grease solution has been drawn off, will still
contain some wool grease, the same process of treatment is therefore repeated with
it as with the fat sludge, until the remaining benzine contains absolutely no wool
grease. Should this not be completely accomplished, the "Lanoresin," through the
presence of wool grease, has the property of being dissolved along with this wool
grease, in grease dissolving substances, and thus its production in a pure state is
prevented.
After having dissolved in this manner and separated from the bottom layer all the
wool grease, the bottom layer is freed, by means of distillation, from the volatile
substances still adhering thereto, dried, and any soap, still contained therein is
completely removed by the aid of pure alcohol. Then, through extraction by water,
diluted alcohol or any other substance capable of dissolving it, the "Lanoresin
is obtained. Ether, chloroform or bisulphuret of carbon can be employed in place of
benzine,
دو

page_text: As precipitating substances, there can be used ethyl-, methyl-, or amyl-alcohol,
in fact any one of the series of alcohols which are represented by the general
formula C H + 20.
.
The quantity and strength of the alcohol to be employed do not always remain
the same, but must, by reason of the great variety in the composition of the grease
sludge which is caused by the different sorts of wools from which it is obtained, be
previously determined in each separate case.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The process of separating an extract or gun resin called "Lanoresin" from the
waste water from wool washing mills which consists in repeatedly treating the grease
sludge, precipitated by means of sulphuric or other mineral acid, before or after
its soaping, with benzine, ether, chloroform, sulphuret of carbon or some other grease
dissolving material with the addition of alcohol (ethyl-, methyl-, amyl-, or any one
of that series of alcohols coming under the general formula C₁ H2 + 20), then
allowing it to settle, and separating the solution containing wool grease from the
bottom layer, substantially as described.
2. The production of pure" Lanoresin " by extraction of the residue, obtained as-
described in claim 1, by means of water, diluted alcohol or any other Lanoresin.
solvent, after first removing by means of alcohol from the separated impure
product the volatile substances and soaps adherent thereto, substantially as
described.
Dated this 1941
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicants.