PINK DISCHARGE. 28 parts Red Discharge 70 parts Reducing Paste HELIOTROPE DISCHARGE. 21 parts Red Discharge 4 parts Blue Discharge GO 75 parts Reducing Paste VIOLET DISCHARGE 40 parts Red Discharge. 60 parts Blue Discharge GO YELLOW GREEN DISCHARGE. 80 parts Yellow Discharge 20 parts Blue Discharge GO GREEN DISCHARGE. 66 parts Yellow Discharge 34 parts Blue Discharge GO OLIVE DISCHARGE. 75 parts Orange Discharge R 25 parts Blue Discharge GO LIGHT BLUE DISCHARGE. 25 parts Blue Discharge GO 75 parts Reducing Paste BLUE DISCHARGE VM (DARK BLUE). 50 parts Chromoglaucine VM 40% 250 parts Water Rub up with: 400 parts Thickening WT 50 parts Green Chromium Acetate Then add: 150 parts Hydrosulphite NF Conc. THE FIRST SULPHUR RED. As before noted in this journal, the Farbwerke vorm. Meister Lucius & Bruening, Hoechst-on-the-Main, have brought out bright sulphur violets which are Thiogene Violets V and B and Thiogene Heliotrope O. They now have brought out the first Sulphur Red under the name of Thiogene Rubine O. This is a blue shade of red with the same fastness to washing as the Thiogene Violet B, but its fastness to light is appreciably better. This new dyestuff is suitable for all kinds of cotton dyeing. It is dyed in a Sodium Sulphite bath with or without the addition of common salt and Soda. On account of its solubility it can be used in all kinds of dyeing machines. The shades are fast to washing, fulling, light, soda and acid, but the resistance to chlorine bleach is small, like that of the other colors of this group. When treated with copper sulphate, Thiogene Rubine O gives a violet shade which approaches that of Thiogene Violet V, but the fastness is considerably better, being equal to that of Alizarine Violet with the exception of its resistance to chlorine. These fast violet and lilac shades are particularly recommended where great fastness is desired. As these shades can also be discharged with chlorates, they should be very interesting to calico printers. (Revue Generale des Matieres Colorantes.) THIOGENE BLUES R AND RR. These new products are similar to Thiogene Blue B in their properties but the shades are somewhat redder, the 2R being the reddest. The dyestuff is dissolved with sodium sulphide in boiling water and this solution added to the dye bath containing soda and salt and glucose. The dyeing is continued for 1 hour at about 160° to 190° F. After dyeing, the excess of dye liquor is removed from the goods by squeezing or extracting and the color developed by smothering or oxidizing in the air. For the dyeing of piece-goods in large quantities, it is advisable to use a box with rollers connected with an oxidizing arrangement and a washing machine. The arrangement is shown in the sketch. If the goods are washed immediately after dyeing, the result is somewhat faster but the shade somewhat greener and duller. Raw cotton or yarn is dyed in machines or in other kettles, the material being kept under the liquor. About 600 yards of goods can be dyed per hour in a vat containing about 375 gallons. For dyeing smaller quantities, a jigger connected with a suitable oxidizing apparatus should be employed. In this case the goods should have 2 or 3 runs, and in order to obtain a clear list the goods should be thoroughly squeezed after each passage and then oxidized. First bath for the above box with rollers and containing about 375 gallons. The above quantities are to be considered as remaining in the dye bath, and the amount of color used in dyeing should be added by means of a feeding liquor which contains the same proportions as the first bath but is more concentrated, and its addition is regulated according to the weight of the goods and the rapidity of the passage through the dye liquor, in such a way that the amount of dye and the strength of the dyestuff remain constant. Proportions for 100 lbs. yarn in kettle: These colors can be combined with the other Thiogene colors for the production of compound shades, especially various shades of blue. THIOGENE GREENS—B, BL EXTRA, GG, AND GL EXTRA. This group of colors is a valuable addition to the Thiogenes and is of great advantage on account of the range of shades which can be obtained from them either alone or in combination with the other Thiogene colors. These are dyed as usual in a sodium sulphide bath with the addition of salt and sodium carbonate. Like all Thiogene colors, a perfect solution must be made with these before adding to the dyebath. This is most readily done by dissolving the dyestuff and sodium sulphide together in boiling water and then adding to the dyebath which contains the sodium carbonate and salt in solution. |
