Alternatives to chromium tanning. Part II. Use of sequential treatments for production of aluminium-tanned leather of high stability / M. H. Davis in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 69 (Année 1985)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 69 (Année 1985) . - p. 130-134 Titre : Alternatives to chromium tanning. Part II. Use of sequential treatments for production of aluminium-tanned leather of high stability Type de document : texte imprimé Auteurs : M. H. Davis, Auteur ; K. C. Montgomery, Auteur ; J. G. Scroggie, Auteur Année de publication : 1985 Article en page(s) : p. 130-134 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The use of sequential treatments has been tested in an attempt to develop an aluminium tannage of high stability which might be used to replace chrome-tanning. Treatments based on various combinations using aluminium, chromium and zirconium compounds and pyromellitic acid have been surveyed in a series of "screening" experiments using lamb intestine. On treatment, involving successive treatments with zirconium sulphate, pyromellitic acid and then aluminium sulphate, gave a product with exceptionnaly high shrinkage temperature (up to 128°C) and high stability to dyebath conditions. Based on this, tanned leather with similar high stabiility was produced using both sheepskin and cattle hide and this has demonstrated the possible application of this system for development of a white aluminium-based tannage with suitable stability for general application. En ligne : https://drive.google.com/file/d/1n1yth3x04pV56gUNU9g8fVaW7x9ORCuC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9409 [article]

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Development of the "SIROLIME" unhairing process / R. W. Cranston in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXI (Année 1986)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXI (Année 1986) . - p. 347-355 Titre : Development of the "SIROLIME" unhairing process Type de document : texte imprimé Auteurs : R. W. Cranston, Auteur ; M. H. Davis, Auteur ; J. G. Scroggie, Auteur Année de publication : 1986 Article en page(s) : p. 347-355 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : By using conventional reagents in a novel way, the “SIROLIME” process allows rapid removal of the hair from cattle hide in an essentially fibrous form with consequent major environmental benefits compared with conventional hair-destroying systems. A large number of successful trials, including regular production runs, have been performed with the process in tanneries throughout the world and have shown that, provided the basic principles are followed, the process is commercially feasible, can be adapted to the requirements of a particular tannery and produces leather of improved quality. The process is particularly suitable where the loosened hair can be removed continuously from the processing vessel during the hair-removal stage. The process can be adapted to stock other than cattle hide, recycling of the processing liquors is relatively simple and there are several variations to the basic process to allow even further advantages. En ligne : https://drive.google.com/file/d/17uOH4bW_X6_t2FLhJl6kdAP5XxfMVS0g/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9217 [article]

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Practical considerations on the sirolime process / R. W. Cranston in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 70 (Année 1986)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 70 (Année 1986) . - p. 50-55 Titre : Practical considerations on the sirolime process Type de document : texte imprimé Auteurs : R. W. Cranston, Auteur ; M. H. Davis, Auteur ; J. G. Scroggie, Auteur Année de publication : 1986 Article en page(s) : p. 50-55 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The sulphide-lime system for removing hair from hides still represents the most easily controllable and cost-efficient method available to a tanner despite the enormous amount of research which has been done in attempting to develop an alternative. Its major drawback today, however, is its severe environmental effect and it is this problem which has prompted the search for a non-polluting method. A number of years ago, we adopted the approach that it would be more advantageous to develope a rapid hair-saving process which utilised, essentially, existing tannery equipment rather than an alternative hair destroying system. Ititially, we worked extensively with enzymes but were unable to find any with sufficient specificity to avoid collagen damage. That is not to say, however, that we have excluded the possibility of using enzymes, as developments in biotechnology may still be able to provide an enzyme of sufficient specificity. The enzyme work enabled us to establish some important principles. Any hair-saving process would need to be a two-stage process. In the first stage, almost all of the hair (at least 90 %) is removed by a rapid chemical treatment. The small amount of redestroying stage, the conditions of which can be chosen to give the normal "liming action" on the hide. Finally there should be an efficient method for separating loosened hair from the hides. Experiments with sulphide had been running concurrently with our enzyme work and eventually an approach using sulphide was developed which has become known as the SIROLIME process. En ligne : https://drive.google.com/file/d/1e_O7PlEdffG3lSNq0zhuWcp9q6h9xH5X/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9207 [article]

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