Читать книгу Henley's Formulas, Recipes and Processes (Applied Chemistry) - Various - Страница 562
Bottle-capping Mixtures.—
ОглавлениеI.—Soak 7 pounds of good gelatin in 10 ounces of glycerine and 60 ounces of water, and heat over a water bath until dissolved, and add any desired color. Pigments may be used, and various tints can be obtained by the use of aniline colors. The resulting compound should be stored in jars. To apply liquefy the mass and dip the cork and portion of the neck of the bottle into the liquid; it sets very quickly.
| II.— | Gelatin | 1 ounce |
|---|---|---|
| Gum arabic | 1 ounce | |
| Boric acid | 20 grains | |
| Starch | 1 ounce | |
| Water | 16 fluidounces |
Mix the gelatin, gum arabic, and boric acid with 14 fluidounces of cold water, stir occasionally until the gum is dissolved, heat the mixture to boiling, remove the scum, and strain. Also mix the starch intimately with the remainder of the water, and stir this mixture into the hot gelatin mixture until a uniform product results. As noted above, the composition may be tinted with any suitable dye. Before using, it must be softened by the application of heat. {127}
| III.— | Shellac | 3 ounces |
|---|---|---|
| Venice turpentine | 1 1/2 ounces | |
| Boric acid | 72 grains | |
| Powdered talcum | 3 ounces | |
| Ether | 6 fluidrams | |
| Alcohol | 12 1/2 fluidounces |
Dissolve the shellac, turpentine, and boric acid in the mixed alcohol and ether, color with a spirit-soluble dye, and add the talcum. During use the mixture must be agitated frequently.
