An Improved Process for the Production of Camphor.
Year: 1890

page_text: Date of Application, 31st Dec., 1890
Complete Specification Left, 30th Sept., 1891-Accepted, 31st Oct., 1891
PROVISIONAI. SPECIFICATION.
An Improved Process for the Production of Camphor.
I WILLIAM WILSON HORN of the firm of Horn & Son of 151 Strand in the
County of Middlesex Patent Agent do hereby declare the nature of this invention
(a communication to me from Frederic de Mare, Comte Napoléon Ney Marc
Sannier and Georges Dambmann all of 95 Boulevard Beaumarchais Paris in the
Republic of France Chemists) to be as follows:-
This my invention relates to an improved process for the production of camphor
and my object is to obtain (by synthesis) the economical and commercial production
thereof by taking advantage of the oxidizing properties of ozone both upon
terebenthine as well as upon camphene.
I propose to obtain the oxidization of terebenthine in two ways viz. :-either by
a hot process at the very moment of its separation from the gum, or by a hot or a
cold process when the terebenthine is entirely formed and has been freed from other
products.
The first means consists in heating the gum and in causing a current of ozone to
pass over it, which combining with terebenthine in vapour produces camphor which
is distilled and condensed in the cold parts of the apparatus.
The second means consists in causing ozone to act upon the vapour of terebenthine
and to condense the vapour of the camphor.
As has been before stated instead of terebenthine, camphene may be employed
for the same purpose. In that case I obtain camphene by treating the mono-
chlorhydrate of terebenthine by an alkaline carbonate, by preference, dry carbonate
of soda at a temperature of 180° Centigrade. The camphene becomes sublimated
at the beginning of the operation and distillation commences at once.
I oxidize the camphene thus obtained in a receiver heated to 80° Centigrade.
Camphene at this temperature becomes vaporized and in that state combines with the
ozones which is then introduced into the receiver. The camphor thus produced is
sublimated and deposited on the sides of the receiver in which the reaction takes
place.
In each and every case we collect the camphor thus produced in fragments
which are compressed by suitable mechanical means into such moulds as may be
desired.
Dated this 31st day of December 1890.
HORN & SON,
Applicant's Agents.
COMPLETE SPECIFICATION.
An Improved Process for the Production of Camphor.
I WILLIAM WILSON HORN of the firm of Horn & Son 151 Strand in the County
of Middlesex Patent Agent, do hereby declare the nature of this invention (a
communication to me from Frederic de Mare Comte Napoléon Ney, Marc Sannier
and Georges Dambmann all of 95 Boulevard Beaumarchais Paris in the Republic
of France Chemists) and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
This my invention relates to an improved process for the production of camphor
and my object is to obtain by synthesis the economical and commercial production
thereof by taking advantage of the oxidizing properties of ozone both upon
terebenthene as well as upon camphene.

page_text: I propose to obtain the oxydization of terebenthene in two ways, namely, either by
a hot process at the very moment of its separation from the gum, or by a hot or a
cold process when the terebenthene is entirely formed, and has been freed from other
products.
The first means consists in heating the gum, and in causing a current of ozone to
pass over it, which combining with terebenthene in vapour, produces camphor which
is distilled and condensed in the cold parts of the apparatus.
The second means consists in causing ozone to act upon the vapour of terebenthene
and to condense the vapour of the camphor.
As has been before stated, instead of terebenthene, camphene may be employed
for the same purpose.
In that case I obtain camphene by treating the monochlorhydrate of terebenthene
with an alkaline carbonate, by preference dry carbonate of soda at a temperature
of 180° Centigrade. The camphene becomes sublimated at the begining of the
operation and distillation commences at once.
I oxydize the camphene thus obtained in a receiver heated to 80° Centigrade.
Camphene, at this temperature, becomes vaporized, and in that state combines with
the ozone which is then introduced into the receiver. The camphor thus produced
is sublimated and deposited on the sides of the receiver in which the reaction takes
place.
In each and every case we collect the camphor thus produced in fragments which
are subsequently compressed by suitable mechanical means into such moulds or
shapes as may be desired.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same to be performed I declare that what I
claim is,
or
1. A process for obtaining artificial camphor (as described above) which consists
essentially in oxidizing by the action of ozone produced in any manner, camphene,
any
other product of the camphene series such as terebenthene terebene and the
like, in appropriate apparatus, the said camphene being prepared economically by
treating the monochlorhydrate of terebenthene by an alcaline carbonate or an
earthy alkali substantially as herein set forth.
Dated this 30th day of September 1891.