An Improved Process for Manufacturing Paint.
Year: 1893

page_text: Date of Application. 24th May, 1893-Accepted, 15th July, 1393
COMPLETE SPECIFICATION.
An Improved Process for Manufacturing Paint.
I, JOHANNES CONRAD MÜLLER, of Wolfenbuttler Strasse 53, Brunswick, in
the Empire of Germany, Decorative Painter, 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, that is to say :-
This process has for its object the production of a paint which, when spread
upon the surface to be painted, shows no kind of greasy spots and, when dry, is
absolutely free from stickiness. This result is obtained by previously treating the
oily substances used for the production of the paint (varnish, siccative matter or
dryers) with ether or similar volatile and resin dissolving substances and by
separating them from the impurities which are in this way removed.
The ether effects not only the separation of all adhesive, particularly resinous,
impurities of the oil, which cause the stickiness of the paint afterwards, but also
prevents at the same time, in consequence of the rapid drying of the paint when it
is spread, the production of greasy spots which are unavoidable with the ordinary
paint.
The following process shows an effective method of carrying out the invention.
The paint is made of the following substances:
in the following manner:
Good varnish
Sulphuric ether
Liquid siccative or dryers
Oil of turpentine, and
Dry colour
The varnish and the siccative or dryer are freed from all viscous substances as
described below, and are combined in the required proportion with the turpentine.
The varnish and siccative are purified by leaving them for twenty four hours in
contact with about th of their volume of sulphuric ether in well closed receptacles.
The addition of ether has the effect of causing the viscous substances in the oils to
deposit so that it is possible to pour off from the sediment the liquid for further
If boiled linseed oil is used as a siccative or dryer it is advisable to carry out
the operation in such a way that the viscous substances may be separated by means
of ether, the liquid from the sediment by pouring, and the ether by evaporation,
before boiling. Oil of turpentine may be purified in the same way; it is sufficient
however for the preparation of the paint to use French oil of turpentine.
The proportion of the substances used are as follows:-
use.
Equal parts of varnish and liquid siccative with 16th (of the volume of each) of
sulphuric ether, yield purified substances to which about 3rd (of the whole volume)
of turpentine is added, and the whole is mixed with the proper quantity of dry
colour.
The paint thus prepared yields a dull or dead colour which dries in a few hours
after having been applied. Stickiness afterwards never occurs, as is the case with
paints used until now.
Brightness of the colour may be produced by varnishing with amber varnish
diluted with a little sulphuric ether.

page_text: 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 :-
1. The method of producing a paint, characterized by the mode of previously
treating the oily substances, (varnish, siccative) used for its production, with ether
or similar volatile resin-dissolving liquids and of separating the viscous impurities
thus divided for the purpose of preventing the stickiness of the paint when dry and
the formation of greasy spots.
2. The addition of dry colours to the paint produced by the process specified in
Claim 1, for the purpose of obtaining the required shades of colour in the same,
substantially as described.
Dated this 24th dow of M... 100°
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.