Improvements in the Process of Producing Disinfectants.
Year: 1889

page_text: Date of Application, 16th Dec., 1889
Complete Specification Left, 16th Sept., 1890-Accepted, 1st Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Process of Producing Disinfectants.
We, ADOLF ARTMANN, of 1 Fabrikstrasse, Braunsweig in the Empire of Germany,
Manufacturer, and HEINRICH WILHELM KUFEKE, of 53 Neuer Wall Hamburg, in the
Empire of Germany, Merchant, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the production of disinfectants which are emulsive in water
and it consists in treating carburet of hydrogen derived from coal tar or tar extracted
from brown coal, petroleum and other organic substances, with sulphuric acid, absorb-
ing the carburet of hydrogen which has become sulphonised by the action of the
sulphuric acid by means of a substance which does not dissolve neutral oils such as
water and separating the sulphonised carburet of hydrogen from the liquid thus
obtained which is then neutralized and mixed with oil and if desired with carbolic acid
and other substances.
Dated the 16th dox of Deanmber 1800
COMPLETE SPECIFICATION.
Improvements in the Process of Producing Disinfectants.
We, ADOLF ARTMANN, of 1, Fabrikstrasse, Braunsweig, in the Empire of Germany,
Manufacturer, and HEINRICH WILHELM KUFEKE, of 53 Neuer Wall, Hamburg, in the
Empire of Germany, Merchant, 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 :-
This invention relates to the production of disinfectants which are emulsive in
water.
What is known as Jeyes' disinfectant or "Creolin" comprises a mixture of tar-oils
containing carbolic acid of high boiling point with small quantities of a pyridine base,
and caustic soda, resin-soap and water. The said disinfectant is easily soluble or
emulsive in water but loses its emulsive property when hydrochloric acid, sulphuric
acid, soda-lye and common salt are added thereto. It is easily produced from tar-
oils which contain carbolic acid by treating them with resin-soap, which latter renders
them emulsive, its disinfecting quality depending on the carbolic acid, which by
reason of its poisonous nature renders substances containing it unfit or dangerous to
be employed for many purposes.
As a result of numerous experiments I have succeeded in producing from tar-
oils a disinfectant capable of emulsion and possessing disinfecting qualities in a high
degree without containing carbolic acid or substances of a kindred nature.
This 1 effect by treating with sulphuric acid, carburet of hydrogen freed from
carbolic acid and derived fron coal tar or tar extracted from brown coal, petroleum
and other organic substances, especially from those coal-tar oils which exist in com-
bination with carbolic acid and cresols. The sulphuric acid sulphonates the carburet
of hydrogen freed from carbolic acid.
In carrying out my invention the process is conducted in the following
manner :-
The tar-oil freed from carbolic acid, preferably coal-tar oil having a boiling point
of 180° and 220° C. is shaken up with concentrated sulphuric acid in small quantities
at a time (about 4% of the coal tar) and at an ordinary temperature. The acid is
each time withdrawn and renewed. This is continued until a sample of the product
Price Al

page_text: when shaken up with water has a milky appearance. The tar-oil thus treated with
sulphuric acid and partly converted into sulphonic acid and sulphone is then shaken
up with water. Other liquids can, however, be used instead of water for extracting
the sulphonic acid and the sulphone providing they will not dissolve neutral oils
(neutral carburet of hydrogen in the tar-oil). The sulphated milky liquid which
contains the sulphonated tar-oil carburet of hydrogen is separated from the undissolved
tar oils which are found floating on the surface after the whole has been allowed to
rest in order that the oil may thoroughly separate and leave the milky liquid by itself
at the bottom. After being separated from the undissolved tar-oils the milky
sulphonated liquid is preferably treated with hydrochloric acid or common salt which
separates the liquid into two layers, the tar-oil acted upon by the sulphuric acid
forming the upper layer. This layer after being separated from the acidulated water
is then neutralized with soda for example. The neutralized substance is now treated
with spirit or any other suitable solvent and then submitted to distillation for the
purpose of eliminating the solvent and by mixing the remaining portion with a
neutral oil (tar-oil carburet of hydrogen) it forms a product which I term Artmann's
creolin, which possesses disinfecting qualities and produces with water a durable
emulsion without possessing the dangerous and poisonous qualities of carbolic acid. A
certain quantity of carbolic acid may if desired be added to the neutral oil (tar-oil
carburet of hydrogen) to be used in the mixture to render it basic and thus I can
produce either neutral or basic Artmann's creolin, that is to say, it may be free from
or contain carbolic acid. The neutral oil or the basic oil can, if desired, be added
to the neutralized mass directly after its neutralization.
As the above described product without the before-mentioned additions possesses
disinfecting qualities and when mixed with water produces a durable emulsion, it can
be used in very small quantities as an effective disinfectant. As these disinfecting
qualities do not result from carbolic acid the product does not possess the poisonous
qualities of the carbolic acid and therefore can be used in numerous instances especially
in cases where the use of carbolic acid or substances containing it are not admissible
in consequence of its poisonous effects.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what
we claim is :
The herein described process of producing a disinfectant which is emulsive in
water, the said process consisting in treating carburet of hydrogen derived from coal
tar or tar extracted from brown coal, petroleum and other organic substances, with
sulphuric acid, absorbing the carburet of hydrogen which has become sulphonated by
the action of the sulphuric acid by means of a substance which does not dissolve neutral
oils, such as water, and separating the sulphonated carburet of hydrogen from the liquid
thus obtained which is then neutralized and mixed with oil and if desired with carbolic
acid and other substances.
Dated the 16th day of September 1890
.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.