Improvements in or relating to the Manufacture of Celluloid.
Year: 1896

page_text: Improvements in or relating to the Manufacture of Celluloid.
I, MARIE EUGÉNIE ASSELOT, née MARTIN, of 16 Rue du Saumon, Paris, in
the Republic of France, Merchant, do hereby declare the nature of this invention
to be as follows:--
Celluloid is, as is well known largely used, but it has the great drawback of
being highly inflammable, which renders its manipulation dangerous.
The present invention relates to the production of non-inflammable celluloid.
I take the ordinary celluloid and dissolve it in acetone in about the proportion
of 25 grammes of celluloid to 250 grammes of acetone; besides I dissolve pulverised
magnesium chloride in alcohol in about the following proportion ;-
150 grammes of alcohol to 50 grammes of magnesium chloride.
Then I mix these two solutions together so as to finally obtain a paste
containing say 20 grammes of the magnesium chloride solution for each 100 grammes
of solution of celluloid.
The paste obtained in this manner is thoroughly mixed and after it has been
dried constitutes the non-inflammable celluloid.
This new product possesses all the transparency, elasticity and other qualities
of ordinary celluloid, and in addition is absolutely non-inflammable.
In the process described I may of course combine magnesium chloride with other
substances having the same qualities or replace the magnesium chloride by these
substances and I may vary the proportions specified.
The new celluloid obtained by my process can be used for all purposes for
which the ordinary celluloid is used, among others for the manufacture of artificial
flowers, leaves etc.
Dated this 23rd day of March 1896.
BOULT & WADE,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to the Manufacture of Celluloid.
I, MARIE EUGENIE ASSELOT née MARTIN of 16 Rue du Saumon Paris, in
the Republic of France, 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 :-
Celluloid is, as is well known largely used, but it has the great drawback of
being highly inflammable, which renders its manipulation and use dangerous.
The present invention relates to the production of non-inflammable celluloid.
I take the ordinary celluloid and dissolve it in acetone in about the proportion
of 25 grammes of celluloid to 250 grammes of acetone; I also dissolve pulverised
magnesium chloride in alcohol in about the following proportion.
150 grammes of alcohol to 50 grammes of magnesium chloride.

page_text: Then I mix the two solutions together so as to finally obtain a paste
containing say 20 grammes of the magnesium chloride solution for each 100 grammes
of solution of celluloid.
The paste obtained in this manner is thoroughly mixed and after it has been
dried constitutes the non-inflammable celluloid.
This new product possesses all the transparency, elasticity and other qualities of
ordinary celluloid, and in addition is absolutely non-inflammable.
In the process described I may of course combine magnesium chloride with other
substances having the same qualities, or replace the magnesium chloride by these
substances and I may vary the proportions specified.
The new celluloid obtained by my process can be used for all purposes for which
the ordinary celluloid is used, among others for the manufacture of artificial
flowers, leaves etc.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The new process of manufacturing uninflammable celluloid, consisting in
dissolving celluloid in acetone and mixing the solution obtained with a solution
of magnesium chloride in alcohol; the mixture of the two solutions being in about
the proportion of 20 grammes of solution of magnesium chloride, containing about
30 per cent. of magnesium chloride, to 100 grammes of solution of celluloid
containing about 10 per cent. of celluloid and afterwards thoroughly mixing and
drying the paste obtained substantially as described.
2. Non-inflammable celluloid, consisting of ordinary celluloid combined with
magnesium chloride in the proportions substantially such as described.
Dated this 16th day of November 1896.
BOULT & WADE,
Agents for the Applicant.