PART II
Fini Georges Alexander Enna translation
Synthetic Tannins: Their Industrial Production and Application
A. Condensation of Free Phenolsulphonic Acid B. Condensation of Partly Neutralised Phenolsulphonic Acid C. Condensation of Completely Neutralised Phenolsulphonic Acid D. Condensation of Cresolsulphonic Acid E. Relative Behaviour of an Alkaline Solution of Bakelite and Natural Tannins F. Dicresylmethanedisulphonic Acid (Neradol D) 1. Neradol D Reactions 2. Electro-Chemical Behaviour of Neradol D 3. The Influence of Salts and Acid Contents on the Tanning Effect of Neradol D 4. Phlobaphene Solubilising Action of Neradols 5. Effect of Neradol D on Pelt 6. Reactions of Neradol D with Iron and Alkalies 7. Reagents suitable for Demonstrating the Various Stages of Neradol D Tannage 8. Combination Tannages with Neradol D (1) Chrome Neradol D Liquors (2) Aluminum Salts and Neradol (3) Fat Neradol D Tannage 9. Analysis of Leather containing Neradol D 10. Properties of Leather Tanned with Neradol D 11. Neradol D, Free from Sulphuric Acid 12. Neutral Neradol G. Different Methods of Condensation as Applied to Phenolsulphonic Acid 1. Condensation Induced by Heat 2. Condensation with Sulphur Chloride 3. Condensation with Phosphorus Compounds 4. Condensation with Aldehydes 5. Condensation with Glycerol