34 oz. chlorate of aniline, 12 oz. prussiate of aniline, 34 oz. water, 12 oz. gum tragacanth water (containing 4 3/8 oz. per 1 3/4 pint). This mixture may also be thickened with starch paste, both for block and machine work. The chlorate of aniline is prepared by dissolving 5 oz. tartaric acid in 10 oz. boiling water, and, separately, 4 oz. chlorate of potash in 12 oz. boiling water. These two hot liquids are mixed together, 20 oz. cold water and 3 oz. aniline being added. After this addition, the liquid takes a faint yellowish tinge, and stands at 9 1/2° Tw. To obtain a prussiate of aniline, treat 7 oz. yellow prussiate with 3 oz. sulphuric acid, previously diluted with 14 oz. water. After some days, the yellow colour disappears, and a deposit of sulphate of potash is formed. To 100 oz. of the solution thus obtained, are added 128 oz. of water and 20 oz. aniline.
Thicken an acid solution of the permanganate of potash with finely-ground siliceous earth and China-clay, and block on. Take through oxalic acid when dry. No organic matter must be used for thickening the permanganate.
This process illustrates the manners in which aniline black may be combined with other colours. For the madder red, is used a mordant of red liquor at 12° Tw., thickened with 2 1/4 lb. flour per gal. Cool, and add, per gal.f 4 oz. tin crystals. For the orange, dissolve 4 1/2 lb. nitrate of lead, 4 1/2 lb. white sugar of lead, in 1/3 gal. water. Add 2/3 gal. gum Barbary water (6 lb. to the gal.). For the black, mix 1 gal. of the colour below, just before printing, with 1/2 pint sulphide of copper paste. To make the colour, thicken 6 gal. clear chlorate of ammonia with 36 lb. British gum. Heat to 150° F. (66° C), let stand till cold, and add 4 qt. aniline oil, and 3 qt. best muriatic acid at 34° Tw. Mix well together. To make the chlorate of ammonia, dissolve 7 1/2 lb. tartaric acid in 6 gal. boiling water. When dissolved, add gradually 3 lb. 2 oz. sesquicarbonate of ammonia. Now add 8 lb. chloride of potash, and stir till dissolved. Let stand till cold, and filter. Wash the precipitated tartar (potassium bitartrate) with 6 qt. cold water. This should yield 6 gal. clear chlorate of ammonia solution.
For the sulphide of copper, take 2 lb. 2 oz. flowers of sulphur, 11 1/2 lb. caustic soda lye (70° Tw.). Stir well till dissolved, without heat; add it to 10 lb. blue-stone, dissolved in 20 gal. boiling water. Wash till neutral to test-paper, and filter till the bulk of the paste is reduced to 1 gal.
(21° C.) with about 8° to 9° F. difference between the wet- and dry-bulb thermometers. Age till black, and pass through ammonia gas. Hang in a cool room for a few hours, and pass through the following solution at 160° F. (71° C): - 2 lb. sulphate of soda, 1 oz. phosphate of soda, 1 gal. water. Wash, and give a second dunging for 25 minutes at 130° F. (54° C.) in 100 gal. water, 2 lb. sulphate of soda, 1 oz. phosphate of soda, and '4 qt. solid cow* dung. Wash, and dye with 13 lb. madder, or a proportionate quantity of alizarine, per piece. Wash, pass through chloride of lime at 1° Tw., then steam, and wash. Dry, and steam for 1/2 hour at 2 lb. pressure. Wet out, soap-wash, and pass through weak sours (1 part oil of vitriol at 170° Tw., to 1000 water) at 60° F. (15° C.) for 6 minutes. Wash, and pass through chloride of lime, as before. Wash, dry, and raise orange in the usual way, first in bichromate alone, and then in bichromate and lime at 212° F. (100° C). Wash well, and pass through chloride of lime, as before.
Wash and dry.
(6) Dissolve 7/8 to 1 1/4 oz. chlorate of soda in 17 fl. oz. water, and thicken as usual. In another vessel, thicken 17 fl. oz. water, and stir in 2f oz. muriate of aniline, with 1 1/2 gr. chloride of vanadium. Equal measures of these two solutions are mixed, and printed at once. Age at a low temperature, as long as chlorine is given off, and raise the temperature till perfectly dry. Lastly, pass through a solution of bichromate of potash, wash, and dry.
(7) The cerium aniline black, of Jerens, is obtained by mixing 75 gr. bisulphate of cerous oxide with 2f ox. muriate of aniline, thickened as usual. The shade, after printing, appears a a light green, but after ageing for 24 hours at 77° F. (25° C.) - 68° F. (20° C.) by the wet-bulb thermometer - it turns to a dark-green, and, after soaping and taking through an alkaline beck, it comes np a fine black.
This is a modification of the madder style. For a " plate purple," a purple is printed on; and an "acid" as described, and the whole is covered over with a lighter purple. The pieces are then aged in the normal manner; fly-dunged at 170° F. (77° C.); and dunged a second time at 165° F. (74° C). They are next washed and dyed, raising the temperature in 2 hours to 175° F. (79° C), which heat is kept .up for J. hour. Wash, and soap, taking 1 lb. soap for 3 pieces of 30 yd. each, boiling for 30 minutes. Wash, and take for 5 minutes through a beck of 500 gal. water, with 1/2 gal. solution of chloride of lime at 8° Tw. Rinse; boil for 1/2 hour with 1 lb. soap per 5 pieces; wash; chlore again for 5 minutes; wring in 1 gal. bleaching liquor at 8° Tw., in only 200 gal. water, along with 2 lb. soda ash at 160° F. (71° C).
This is another modification of madder - work. Acid reserves, consisting of lime-juice and caustic soda, are printed on the pieces; next, the ordinary "colours " for madder reds, purples, chocolates, etc, are printed; and the goods, after the usual operations of ageing and dunging, are dyed. In the white portions reserved, steam or pigment colours maybe blocked in.