Synthetic Tannins
Cód:
491_9781406773019
SYNTHETIC TANNINS AUTHORS PREFACE WHILST the synthesis of the natural tannins has been suc cessfully outlined by Emil Fischer, it has been left to the Chemical Industry, notably the Badische Anilin und Soda fabrik in Ludwigshafen-on-the-Rhine, to discover the means of making possible the production of the synthetic tannins. The scientific results of Fischers researches are to-day common knowledge, and these, together with questions arising therefrom, will only be lightly touched upon in the book herewith presented. Even an attempt at enumerating the present synthetic tannins has so far not been published, and I have therefore availed myself of the opportunity of making a brief summary of them. My work at the B. A. S. F. deepened my insight in this new field ample opportunity of applying these synthetic products in practice was given me wfyen, as a result of the war, I was appointed technical consultant to the Austrian Hide and Leather Commission, and in this capacity was called upon to act as general adviser to the trade. The ultimate object of my scientific researches was then to investigate the chemistry of this particular field, and this has led me to present a picture, complete as far as it goes, of this branch of chemical technology. The intention of the present volume is to communicate to the reader what has so far been scientifically evolved and practically applied in this field. First of all, however, it may illustrate the extreme importance and the universal applicability of the synthetic tannins in the making of vi AUTHORS PREFACE leather. The modern leather industry cannot, to-day, be without these important products but also in those tan neries, where the synthetic tannins have not so far been regarded as indispensable, their use is strongly recom mended. Just as in the case of the coal-tar dyes, the synthetic tannins will make us independent of foreign supplies, and thus keep within our own borders the vast sum of money required in former days for the p
Veja mais
