The dyeing of leather with the dyestuffs of Cassella Color Company . g to an aftertreatment with a solution of 172 oz sulphate of copper, I V/2 OZ bichromate of potash and per 10 gallons water. 8 oz acetic acid of 50 0/0 J The dyed leather is drummed or kneaded in this solution for hour,and then rinsed thoroughly. Black on chamois leather has frequently to be produced by staining,which is carried out in the following manner: Prepare as above stated a solution of 5 lbs Immedial Black NN lbs sodium sulphide crystals1 lb formaldehyde1 lb soap and apply this sohition to the dry leather by m
The dyeing of leather with the dyestuffs of Cassella Color Company . g to an aftertreatment with a solution of 172 oz sulphate of copper, I V/2 OZ bichromate of potash and per 10 gallons water. 8 oz acetic acid of 50 0/0 J The dyed leather is drummed or kneaded in this solution for hour,and then rinsed thoroughly. Black on chamois leather has frequently to be produced by staining,which is carried out in the following manner: Prepare as above stated a solution of 5 lbs Immedial Black NN lbs sodium sulphide crystals1 lb formaldehyde1 lb soap and apply this sohition to the dry leather by means of a brush. Afterthis coating has been absorbed by the leather, another solution is appliedin exactly the same manner, consisting of 8 oz sulphate of copper I 8 oz bichromate of potash per 10 gallons water. 2i/i> lbs acetic acid of 50 J 0 JThe leather is then rinsed several times with water, squeezed, and dried. For shading black dyeings produced in this manner, ImmedialBordeaux G cone, is used. per 10 gallons liquor, Without guarantee. I Bark-tanned oz Diamond Phosphine PG„ New Blue D 120.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdyesanddyeing, bookye
