Download or read book ANALYSIS OF SYNTHETIC TANNING MATERIALS CLASSIC REPRINT written by EDWARD. WOLESENSKY and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behavior of Synthetic Tanning Materials Toward Hide Substance Classic Reprint written by Edward Wolesensky and published by Forgotten Books. This book was released on 2017-11-19 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Behavior of Synthetic Tanning Materials Toward Hide Substance The various synthetic tanning materials vary very much in the ex tent oi their solvent (hydrolytic) action on the hide substance of leather during tanning, some showing negligible hydrolysis in solutions of normal acid concentration, while others, in solutions of half this concentration, produce a practically complete destruction of the leather as such. N o relation has yet been found between this behavior and other characteristics of the syntans. As regards the fixation of the tanning material in the hide, the syntans may be divided into two groups corresponding to the two general methods of preparing these products. Those which are obtained by first sulphonating an aromatic compound and then condensing the sulphonic acid with an aldehyde (designated as type A syntans) combine with the hide rapidly, but to a limited extent, and the maximum of combined tanning material, as well as the time required to reach this maximum, are but little affected by the concentration of the solution. The second group of syntans, in the preparation of which the order of sulphonation and condensation with aldehyde is reversed (type B) possesses much greater filling power, requires longer time to reach a maximum, and the time required to reach this maximum is more dependent on the concentration of the solution. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Analysis of Synthetic Tanning Materials written by Edward Wolesensky and published by . This book was released on 1926 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Synthetic Tanning Materials written by Edward Wolesensky and published by . This book was released on 1926 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Synthetic Tanning Material Classic Reprint written by Edward Wolesensky and published by Forgotten Books. This book was released on 2018-12-31 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Investigation of Synthetic Tanning Material In 1904 the chestnut blight, a fungus importation from Japan and China, was recognized as a serious disease around New York City. Since that year the disease has spread rapidly, until at the present time it has killed 80 per cent of the available chestnut north of Virginia and penetrated western North Carolina eastern Tennessee, and Georgia, the vital centers of the remaining stands of chestnut timber. The effect of this blight from the point of View of its economic consequence has not yet been fully determined, but it now appears certain that any estimate of our resources based upon an inexhaustible supply of chestnut wood must be subject to radical modifications. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Action of Sodium Sulphate in Synthetic Tanning Materials Classic Reprint written by Edward Wolesensky and published by Forgotten Books. This book was released on 2018-01-09 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Action of Sodium Sulphate in Synthetic Tanning Materials It therefore follows that if a hide is treated with a solution contain ing both sodium sulphate and a synthetic tanning material (which is usually an active acid) both the sulphuric acid and the tanning material will combine with the hide to a certain extent. In other words, the neutralization of the excess sulphuric acid ln syntans, by means of sodium hydroxide or any other reagent 'which yields a soluble sulphate, does not entirely prevent the sulphuric acid from reacting with the hide during the tanning process. The extent to which the sulphuric acid and the synthetic tanning agent will combine with the hide under these conditions is not yet definitely known, but it is probable that an equilibrium will ultimately be reached, depending partly on the nature of the syntan and partly on the concentrations of the reagents in the tanning solution. But whatever the amount of the sulphuric acid which will be combined ln the leather, the results obtained in the present study indicate that this can not be com pletely removed by any amount of washing with water at ordinary temperatures. It is possible and even probable that this combined sulphuric acid which remains in the leather after thorough washing will have no injurious effect on it, but this still remains to be definitely ascertained. In any case, thorough washing of the leather after using a syntan which contains any considerable amount of sodium sulphate or other soluble sulphate is always necessary in order to prevent injury from the free sulphuric acid which would result from the inter action of the sulphate with any excess of uncombined sulphonic acid. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Analysis of Synthetic Tanning Materials by Edward Wolesensky written by Edward Wolesensky and published by . This book was released on 1926 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Synthetic Tanning Materials written by Edward Wolesensky and published by . This book was released on 1925 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications on Hides Skins Tanning Materials Tanning Processes and Leather written by Eastern Regional Research Laboratory and published by Forgotten Books. This book was released on 2017-11-19 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Publications on Hides, Skins, Tanning Materials, Tanning Processes, and Leather: September 1948 Clarification of leather extracts for the determination of reducing sugars. (f. P. Veitch and J. S. Rogers) J. Amer. Leather Chem. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Use of Sulphite Cellulose Extract As a Tanning Material Classic Reprint written by E. L. Wallace and published by Forgotten Books. This book was released on 2017-11-18 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Use of Sulphite Cellulose Extract as a Tanning Material In Table 1 will be found the results of chemical analyses made on four samples of sulphite cellulose extracts. In determining the tannin content the official method of the American Leather Chemists' Association was used. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book The Structure of Some Synthetic Tanning Materials written by I. I. Sada and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Syntans and Newer Methods of Tanning written by Philip Stanley Chen and published by . This book was released on 1950 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Synthetic Tanning Materials written by Edward Wolesensky and published by . This book was released on 1925 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Synthetic Tanning Material written by Edward Wolesensky and published by . This book was released on 1925 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vegetable and Synthetic Tanning Materials written by V. S. Sundara Rao and published by . This book was released on 1991 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthetic Tanning Materials written by and published by . This book was released on 1949 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthetic Tannins written by Georg Grasser and published by Forgotten Books. This book was released on 2018-02-08 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Synthetic Tannins: Their Synthesis, Industrial Production and Application The scientific results Of Fischer's researches are today 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 deepened my insight in this new field; ample Opportunity Of applying these synthetic products in practice was given me when, 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. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
