A New or Improved Product adapted for use in Dyeing Wool, in Aerating Bread or Pastry and for other Purposes.
Year: 1897

page_text: A New or Improved Product adapted for use in Dyeing Wool, in
Aerating Bread or Pastry, and for other Purposes.
GOTTLOB WENDLER, of 18, Tib Lane, Manchester, in the County of Lancaster,
Merchant and Manufacturer, do hereby declare the nature of this invention to be
as follows:-
This invention relates to a new or improved product which may advantageously
be employed as an acid salt in mordanting baths used in wool dyeing, as an element
in the aeration of bread and pastry and for other purposes. The new product may
be called a boro-sulphate or a boro-phosphate preferably of sodium or potassium,
and is prepared by acting upon acid sulphate (bisulphate) of sodium or of potassium
or upon the acid phosphate of sodium or of potassium with boracic acid or with
sodium borate and sulphuric or phosphoric acid under heat. Or, in substitution
for the acid salts, normal salts may be employed with the addition of an extra
molecular proportion of the acid. The dry product possesses high antiseptic and
preservative properties and is generally used in combination with an indifferent
substance such as sodium chloride or sulphate as a diluent. When brought into
contact with an alkaline carbonate, there is an evolution of carbonic dioxide, and
it may in this manner be employed in the aeration of fluids, pastry and the like.
The normal product may be used in the mordanting bath with or without admix-
ture. If the dry product is mixed with an alkaline carbonate for the ultimate
production of carbonic dioxide, it must be preserved where or under such conditions
that the moisture of the atmosphere cannot reach it before the time of use or
thereabouts.
W. E. HEYS & SON,
Agents for the Applicant.
A New or Improved Product adapted for use in Dyeing Wool, in
Aerating Bread or Pastry, and for other Purposes.
I, GOTTLOB WENDLER, of 18, Tib Lane, Manchester, in the County of Lancaster,
Merchant and Manufacturer, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement; -
This invention relates to a new or improved product which may advantageously
be employed as an acid salt or as an acid carrier in the process of mordanting
woollen goods; as an element in the composition of baking powders, gazogene

page_text: powders and the like; and generally as a substitute for cream of tartar and for
tartaric acid. The new product may be designated a boro-sulphate of sodium or
of potassium or a boro-phosphate of sodium or of potassium as the case may be.
It is prepared either by acting upon the acid sulphate or upon the acid phosphate
of sodium or of potassium with boracic acid under heat, or by acting upon sodium
or potassium borate with sulphuric or with phosphoric acid.
The new product is best prepared for commercial use in the following manner:-
Sixty pounds of concentrated commercial sulphuric acid having been heated
to the boiling point of the acid, there is gradually added thereto, with stirring,
One hundred pounds of calcined sodium sulphate.
When complete solution has been effected there is gradually added to the
mixture, with stirring, about:
Fifteen pounds of boracic acid.
The melt having been kept heated during the whole operation is then cooled and
the cold mass may be broken up, powdered and packed for sale or use.
The proportion of boracic acid may vary within very wide limits according
to any special object, but for general use the proportion above mentioned may be
employed.
It will be obvious that a potassium salt may be substituted for the sodium salt,
and that a bisulphate may be employed instead of a sulphate, in which case a
correspondingly smaller quantity of sulphuric acid can be used because of the
additional acid contained in the salt. Also that if a boro-phosphate is required,
phosphoric acid and phosphates must be substituted for the hereinbefore described
sulphuric acid and sulphates in molecular proportions. Further, that sodium
borate may be employed as the source of boracic acid in which case this salt may
be substituted for the boracic acid and a correspondingly larger quantity of sul-
phuric acid may be employed. I prefer however in all cases to proceed as more
particularly hereinbefore set forth.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is:-
1. The herein before described composition of matter consisting of a chemical
combination of sulphuric and boracic acids and sodium or potassium.
2. The hereinbefore described composition of matter consisting of a chemical
combination of phosphoric and boracic acids and sodium or potassium.
3. The herein before described composition of matter for use as an acid salt or as an
acid carrier in mordanting woollen goods in the manufacture of baking and
gazogene powders and generally as a substitute for tartaric acid or cream of tartar
consisting of or containing sixty pounds of commercial concentrated sulphuric acid
and one hundred pounds of calcined potassium or sodium sulphate or the molecular
equivalents thereof, and a variable quantity of boracic acid, prepared substantially
as set forth.
Dated this 2nd day of Fohmuam ÅD
1909