MISCELLANEOUS.

BORNYL ESTERS AND PROCESS OF MAKING CAMPHOR, &c.

Bruno Richard Seifert, of Radebeul, near Dresden, and Curt Philipp, of Dresden, Germany, assignors to Chemische Fabrik von Heyden, Actiengesellschaft. Patent No. 779,377, dated January 3, 1905.

The inventors have discovered a new class of aromatic compounds called "bornyl esters" of aromatic mono-oxy carbonic acids. The typical representative of this new class of bodies is the salicylate of borneol (C10H17OCOCH2OH), and the general formula of this new class is CHOCO-R-OH, wherein "R" means an aromatic nucleus. The substances of this new class of bodies are especially important on account of their manifold availability. They may be used in the manufacture of borneol and camphor. For this purpose the borneol is separated from the esters by the action of alkalies and oxidized to camphor in the known manner. Furthermore, the substances of this new class of bodies have important therapeutical properties. The salicylate of borneol and the paracresotinate of borneol have an antineuralgic and antirheumatic action when given internally or rubbed into the skin.

This new class of compounds are formed by heating aromatic mono-oxy-carbonic acids with terpenes (C10H18)-for example, pinene, camphene, mixtures containing pinene and camphene, like turpentine-oil. The chemical reaction takes place according to the equation

wherein "R" means an aromatic nucleus. The reaction proceeds slowly already at temperatures below 100° C., but can be hastened considerably by higher temperatures.

WAX EMULSION AND PROCESS OF PRODUCING SAME.

Herbert H. Church, of Bellows Falls, Vermont, assignor to Casein Company of America. Patent No. 779,527, dated January 10, 1905.

This invention has for its object to provide a wax emulsion suitable for use in the arts, such as in the paper-manufacturing and textile trades or for laundry use, which will contain a large proportion of paraffin-wax in an emulsified condition, and which emulsion, while smooth and soft, may be produced at comparatively little cost.

This paraffin-wax emulsion is preferably produced in the following manner: To fifty parts, by weight, of paraffin-wax and fifty parts, by weight, of stearic acid are added about three hundred parts, by weight, of water. These ingredients are then thoroughly heated until the solid substances are completely melted. To the hot liquid is then preferably added about twenty parts, by weight, of borax previously dissolved in a small quantity of water, or instead of the borax, which has an alkaline reaction, a smaller quantity-say about ten parts-of an alkali, such as caustic soda, previously dissolved in water, may be used. The mixture should then be kept heated to the boiling-point with continual agitation. This heating and agitation should be kept up for at least half an hour after the addition of the borax and alkali. When the borax or alkali has first been added, the mixture will froth or foam considerably, and it is important to continue the boiling and agitation until such frothing or foaming has ceased and which will require at least half an hour. When the frothing or foaming has ceased and the product is cooled, the result will be a perfectly smooth and white wax emulsion.

PROCESS OF PRODUCING ADHESIVES.

Hezekiah Kibbe Brooks, of Bellows Falls, Vermont, assignor to Casein Company of America. Patent No. 779,583, dated January 10, 1905.

This invention is based on the use of persulfate and acid and secures amylaceous adhesive products more nearly resembling animal glue than any of the similar products previously made.

The invention or discovery may be carried into effect in the following manner: Mix one hundred pounds of dry fecula with one pound of persulphate (preferably persulphate of ammonia) and fifteen pounds of water. Add two pounds of sulphuric acid, which will usually raise the temperature of the mixture to about 120° F. Should the temperature of the mixture not come up to this point, heat should be applied until the temperature of the mixture has been brought up to 120° F. The mixture is then preferably agitated at a temperature of at least 100° F., but preferably at a temperature of about 120° F., to modify the fecula. The mixture or modified fecula is then preferably washed or neutralized to eliminate the free acid and the resulting ammonium sulphate. If the product is to be employed as an adhesive to be applied to envelops or labels, a well-washed material free from chemicals which impart a bad taste thereto is better than a neutralized material, although the neutralizing process by the use of any alkali or alkaline salt may be more quickly and easily performed. After being washed or neutralized the modified fecula should be heated to a temperature of about 150° F. or above, when it will quickly dissolve and present a very close resemblance in amber-colored appearance and transparency to dissolved animal glue and will be about the same density.

DEPILATING COMPOSITION.

John Campbell and William A. Rushworth, of Chicago, Illinois, assignors, by mesne assignments, to Schoellkopf, Hartford & Hanna Company. Patent No. 781,714, dated February 7, 1905. The object of this invention is to produce a depilatory composi

tion which can be used in the form of a watery solution in which the hides are immersed or steeped and which operates quickly and effectively in loosening the hair without injuring either the skin or the hair.

This improved composition consists mainly of calcium sulphydrate and barium hydrate and contains barium hydrate in excess or as the preponderating ingredient.

The composition contains barium hydrate in excess or as the preponderating ingredient and does not dissolve or remove any part of the gelatinous tissue, grain, or substance of the hide or dissolve the hair-bulbs, as sodium sulphide does, but acts mainly by expanding the skin or hide, thereby loosening the hair-bulbs, so that the hair can be readily removed on the beam. The hide retains its natural suppleness, although increasing somewhat in weight, and the hair retains its natural strength even if the hide is allowed to remain immersed in the solution longer than is necessary to loosen the hair. The hides require no baiting or liming after treatment with the solution and are placed in a very receptive condition for the tanning material. The proportion of sodium sulfid in the composition is so small that this ingredient does not act to any material extent as a depilatory, but mainly to freshen and restore the grain and give the skin plumpness.

DICHLOR-DIMETHYL-FLUORANE

OF MAKING SAME.

AND PROCESS

Paul Julius, of Ludwigshafen-on-the-Rhine, Germany, assignor to Badische Anilin und Soda Fabrik. Patent No. 785,003, dated March 14, 1905.

This invention relates to the manufacture of dichlor-dimethylfluorane which can be used for the preparation of rhodamine coloring-matters, the method used being similar to that employed with dichlor-fluorescein (dichlorfluorane). It is claimed that this compound can be prepared by heating together phthalic anhy

drid and ortho-chlor-para-cresol in the presence of a condensing agent, for then the hydrogen atom which is in the ortho position to the hydroxyl group of the ortho-chlor-para-cresol reacts with the phthalic anhydrid and the pyrone ring is formed.

The pure compound forms small colorless crystals. It is easily soluble in chloroform and in hot nitrobenzene, but difficultly soluble in alcohol, ether, and benzene. It dissolves in concentrated sulfuric acid, giving a yellowish-green solution.

COATED OR IMPREGNATED FABRIC AND METHOD OF MAKING SAME.

Thomas E. Kinney, of Waverly, Ohio. Patent No. 785,110, dated March 21, 1905.

This invention relates to coated and impregnated fabrics, and has for its object to produce an improved fabric which is particularly adapted for use in the manufacture of gloves and mittens.

In the preferred process the fabric to be treated, cotton ticking, coverts, fleeced cotton duck, or other cotton fabric, is subjected to the action of a heated bath containing approximately ninety parts of paraffin, two and one-half parts of tallow, two and onehalf parts of beeswax, two and one-half parts of rosin, two and one-half parts of linseed-oil, and from one hundred to two hundred parts of water. The bath is maintained at a sufficiently-high temperature to keep all of the ingredients in a melted condition, preferably at or about 212° F. The fabric may be coated or impregnated with the processing mixture in any convenient manner. The treated fabric is then hung in the dry-house until all the water has been evaporated.

Fabrics treated by this process are not only permanently waterresisting, but exhibit greatly-increased durability by reason of the treatment. Furthermore, the paraffin mixture will not crumble and loosen from the fabric under any amount of bending or hard usage however low the temperature, and the treated fabric has been found to possess a degree of permanency and unalterability before unattained.