Improvements in and relating to the Recovery of Soap and Suint from Wool Grease.
Year: 1892

page_text: Date of Application, 20th Sent.. 1892
Complete Sp-cification Left, 17th June, 1893-Accepted, 22nd July, 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Recovery of Soap and Suint
from Wool Grease.
I, WILLIAM MILLS of The Milton Chemical Company, 90 Cowlairs Road,
Glasgow, Lanarkshire, Soap Manufacturer, do hereby declare the nature of my
invention to be as follows:-
This invention has reference to and comprises a new or improved mode or
process of, and means for treating wool grease with the object of separating and
recovering the soap and suint fat, or lanoline contained therein for mercantile
purposes.
My invention essentially consists in treating the wool grease within a deep
vessel, with a potassium or borax base in combination with a soda base, under the
application of heat, so as to separate the suint or lanoline from the soap, and
recover both as merchantable commodes.
By my improvements I take say 10) parts of wool grease and place same in an
iron or other deep vessel, preferably about double the depth of its breadth, and I
introduce steam into the vessel by a coil or otherwise. 1 then carefully add by
degrees about 300 parts potassium carbonate or borax lye, at a strength of about
8 degrees Twaddle, and boil the mixture, the treatment lasting about six hours. The
partially saponified mass is allowed to settle for about twelve hours, and then the
containing vessel is heated by a fire from below, and about 25 parts sodium hydrate
lye added at a strength of about 30 degrees Twaddle, and the mixture boiled for
about three hours. On the fire being now drawn or removed, the suint will
immediately come to the surface of the liquid in the form of a sticky soapy looking
scum, and underneath I have a pure oleine soap of a dark color perfectly free from
the said suint.
1 then carefully skim or float off the suint and place it in a vessel to boil along
with three times its weight of sodium hydrate at a strength of about 20 degrees
Twaddle. The suint is afterwards passed over into other vessels and washed two
or more successive times with hot water, and then the pure commercial suint rises
to the top and is allowed to cool.
The oleine soap I boil down with fire heat, adding from time to time small
quantities of potassium hydrate at a strength of about 35 degrees Twaddle until
the soap becomes thick and plastic, taking great care to keep it clear of more
I then add about 5 parts X X pale
free caustic potash than the fat will take up.
soap, and 2 parts cocoa nut oil soap, or 5 parts oleic acid soap to bind the mixture;
soap is pumped
and allow it to cool for about three days, after which the finished
off into a crutching or agitating machine and treated for about 6 hours, when
it is ready for being run off into barrels.
وو
tambor 1802
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to the Recovery of Soap and Suint
from Wool Grease.
1, WILLIAM MILLS, of The Milton Chemical Company, 90 Cowlairs Road,
Glasgow, Lanarkshire, Soap Manufacturer, do hereby declare the nature of my
invention, and in what manner the same is to be performed to be particularly
971

page_text: described and ascertained in and by the following statement in writing, that is
to say :-
This invention has reference to and comprises a new or improved mode or
process of, and means for treating wool grease with the object of separating and
recovering the soap and suint fat, or lanoline contained therein for mercantile
purposes.
My invention essentially consists in treating the wool grease within a deep vessel,
with a potassium or borax base in combination with a soda base, under the applica-
tion of heat, so as to separate the suint or lanoline from the soap, and recover both
as merchantable commodity.
I carrying my improvements into practice, I take say 100 parts of wool grease
and place same in an iron or other deep vessel, preferably about double the depth
of its breadth, and I introduce steam into the vessel by a coil or otherwise." I
then carefully add by degrees about from 200 to 300 parts potassium carbonate or
borax lye, at a strength of about from 6 to 10 degrees Twaddle, and boil the
mixture, the treatment lasting about six hours. The partially saponified mass is
allowed to settle and cool for about twelve or more hours, and then the containing
vessel is heated by a fire from below, and about 25 parts sodium hydrate lye added
at a strength of about 30 degrees Twaddle, and the mixture boiled for about three
hours. On the fire being now drawn or removed, the suit will come to the surface
of the liquid in the form of a sticky soapy looking scum and underneath I have a
pure oleine soap of a dark colour perfectly free from said suint.
I then carefully skim or float off the suint and place it in a vessel to boil along
with sodium hydrate at a strength of about 20 degrees Twaddle. The suint is
afterwards passed over into other vessels and washed two or more successive
times with hot water, and then the pure commercial suint rises to the top and is
allowed to cool.
The oleine soap I boil down with fire heat, adding from time to time small
quantities of potassium hydrate at a strength of about 35 degrees Twaddle until the
soap becomes thick and plastic, taking great care to keep it clear of more free
caustic potash than the fat will take up, I then add about 5 parts X X pale soap
and 2 parts cocoa nut oil soap, or 5 parts oelic acid soap to bind the mixture; and
allow it to cool for about three days, after which the finished soap is pumped off
into a " crutching or agitating machine and treated for about 6 hours, when it is
ready for being run off into barrels.
"
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
First. The herein described process of treating wool grease and separating and
recovering the soap and suint fat or lanoline contained therein, substantially as set
forth.
Second. In a process for treating wool grease to recover the soap or lanoline
contained therein, the use of a potassium or borax base in combination with a soda
base, substantially as set forth.
De tek
1900
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.