Process of Manufacturing Varnish.
Year: 1895

page_text: Date of Application, 4th Dec., 1895
Complete Specification Left, 26th Sept., 1896-Accepted, 4th Dec., 1896
PROVISIONAL SPECIFICATION.
A. Process of Manufacturing Varnish.
I, CARL WILHELM JURANY, of Veitgasse 4, Vienna, Austria, Colour-
manufacturer, do hereby declare the nature of this invention to be as follows:-
:-
This invention relates to a process of manufacturing white or coloured varnish,
which is produced by stirring 40-70 per cent. of sulphide of zinc (ZnS) containing
sulphide of zinc colour with alcohol of high percentage.
The sulphide of zinc colour containing 40—70 (ZnS) is produced by a special
process only recently known in the trade, viz. by the so called cold process, but which
it will be understood forms no part of the present invention. The said sulphide
of zinc colour has for its base 60 per cent. of sulphide of zinc (ZnS) and 30-40 per
cent. barium sulphate (BaSO4) and by the aid of the said process it is possible
to produce white sulphide of zinc colour, the barium sulphate which it contains
can only be raised 30 per cent. whilst as above mentioned the ZnS contents can be
raised up to 70 even 75 per cent.
The sulphide of zine colour of high percentage is stirred in as pure alcohol as
possible to a paste until it becomes a perfect homogeneous mass, from which the
superfluous alcohol is removed by pressure or careful distillation with or without
the application of a vacuum.
The said mass may be coloured as desired by mixing whilst kneading with it
aniline colours.
The paste like white or coloured mass thus obtained dissolves perfectly in
alcohol or benzenevarnish, mollifies in any oilvarnish and forms in any of the said
dissolving means a varnish which will coat well, is perfectly pure, white or
coloured as the case may be, which runs thin is easily usable, dries quickly and
can be kept in closed tins for any length of time ready for use.
The basis of this varnish, the sulphide of zinc colour of high percentage,.
containing according to experience principally traces of oxyde of zinc (one half
to two per cent.) which might mix with the free fatty acid which may be present.
in the means used for dissolving (alcohol, benzine, fatty varnish) and form a fatty
acid salt of zinc, which would be detrimental to the quality of the varnish, it is
advisable to employ only such varnish the free fatty acids of which have been
neutralized by being previously treated with alcalis.
Dated this 3rd day of December 1895.
F. BOSSHARDT & Co.,
Agents to Applicant.
A Process of manufacturing varnisn,
I, CARL WILHELM JURANY, of Veitgasse 4, Vienna, Austria, Colour-
manufacturer, 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 a process of manufacturing white or coloured varnish,

page_text: which is produced by mixing sulphide of zinc colour containing 40-70 per cent.
sulphide of zinc (ZnS) with alcobol of high percentage.
The sulphide of zinc colour containing 40-70 (ZnS) is produced by a special
process only recently known in the trade, viz. by the so called cold process, but
which it will be understood forms no part of the present invention. The said
sulphide of zinc colour has for its base 60 per cent. of sulphide of zinc (ZuS) and
30-40 per cent. barium sulphate (BaSO4) and by the aid of the said process it is
possible to produce white sulphide of zinc colour, the barium sulphate which it
contains reaches 30-25 per cent. whilst as above mentioned the ZnS contents
may reach 70, even 75 per cent.
The sulphide of zinc colour of high percentage is stirred in as pure alcohol as
possible to a paste until it becomes a perfect homogeneous mass, from which the
superfluous alcohol is removed by pressure or careful distillation with or without
the application of a vacuum.
The said mass may be coloured as desired by mixing whilst kneading with it
aniline colours:
The paste like white or coloured mass thus obtained dissolves perfectly in
alcohol or benzenevarnish, mollifies in any oilvarnish and forms in any of the said
dissolving means a varnish which will coat well, is perfectly pure, white or
coloured as the case may be, which runs thin is easily usable, dries quickly and
can be kept in closed tins for any length of time ready for use.
The basis of this varnish, the sulphide of zinc colour of high percentage,
containing according to experience principally traces of oxyde of zinc (one half to
two per cent.) which might mix with the free fatty acid which may be present in the
means used for dissolving (alcohol, benzine, fatty varnish) and form a fatty acid
salt of zinc, which would be detrimental to the quality of the varnish, it is
advisable to employ only such varnish the free fatty acids of which have been
neutralized by being previously treated with alcalis.
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―
1st. The process of manufacturing white varnish, consisting in mixing sulphide
of zinc colour containing 40-70 per cent. of sulphide of zinc (ZS) and only
30 per cent. barium sulphate (BaSO) in pure alcohol to paste form, the superfluous
alcohol being pressed out or by distillation expelled.
2nd. The process of manufacturing coloured varnish, consisting in mixing with
the alcohol and sulphide of zinc colour during the process specified in the preceding
-claim, aniline colours of the desired colour.
. . '
3rd. White varnish manufactured in accordance with the process specified in
Claim 1.
4th. Coloured varnish manufactured in accordance with the process specified in
Claim 2.
5th. Dissolving the product specified in Claims 3 & 4, in alcohol or benzene
varnish; or emollition of same in oilvarnish.
6th. Dissolving the product specified in Claims 3 & 4, in alkalized alcohol,
benzine or oilvarnish.
Dated thie 25th day of Sentember 1896.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.