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Mention de date : 02/1991
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Ajouter le résultat dans votre panierCosts-effective method for the production of depilation / S. Malathi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 1 (02/1991)
Titre : Costs-effective method for the production of depilation : A cost-effective method for the production of alkaline protease by an aspergillus flavus isolate and its application for the depilation of goat skins Type de document : texte imprimé Auteurs : S. Malathi, Auteur ; R. Chakraborty, Auteur ; K. Parthasarathi, Auteur ; B. Ramanaiah, Auteur Année de publication : 1991 Article en page(s) : p. 33-41 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Solid-substrate fermentation(SSF) of an Aspergillus flavus isolate has been developed for the production of an alkaline protease.Since SSF is known to have distinct economic advantages over conventional methods, it is hoped that this alkaline protease will be available at a commercially attractive price.A study of the properties of the enzyme indicate that it is active over a pH range of 6.5 to 10.5, with a temperature optimum at 45°C.It has high caseinolytic activity and no activity against collagen.Evaluation of this enzyme as a depilating agent for goat skins indicate that its dehairing capacity is satisfactory.Physical testing of the finished leathers of both experimental and control groups, indicates that the enzymically dehaired skins had better strength properties when compared to the controls.Miscroscopic evaluation of the pelts showed that enzymic dehairing compared favorably with the lime-and-sulfide method. En ligne : https://drive.google.com/file/d/1RIYYmyBjJ3XMXnTQPXu0Kvfq6A2DW9mM/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8585
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXVI, N° 1 (02/1991) . - p. 33-41[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006877 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Low voc topcoats for the leather industry Type de document : texte imprimé Auteurs : Christopher J. Gill, Auteur Année de publication : 1991 Article en page(s) : p. 42-48 Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : There is an increasing interest in using aqueous topcoats in the leather industry.Topcoats traditionally have been the coating requiring the greatest amount of organic solvent and are therefore primary targets for solvent reduction.Waterborne topcoats offer the tanner several well-known advantages over conventional lacquers and lacquer emulsions,namely ease of clean-up and significantly reduced solvent in the work environment.The adoption,though, of waterborne topcoats into the industry has been slowed by a reluctance to compromise traditional aesthetic standards of solvent-based coatings and by the need to develop familiarity and comfort with pratical aqueous topcoat application.There is no doubt that local and federal pressures to eliminate solvents will continue.
The successful incorporation of water topcoats into the leather industry will require a thorough understanding of the needs of each market segment.Shoes,accessories,furniture upholstery,garment and automotive leather all have different needs.This paper will address the performance and aesthetic requirements of each market, the finishing systems currently used and those that are evolving,the application variations and approaches to overcoming problems inherent in aqueous systems.En ligne : https://drive.google.com/file/d/1BRRA50U7j_RwlfjD266R7tXBq4QUKBwc/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8586
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXVI, N° 1 (02/1991) . - p. 42-48[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006877 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Solvent-free, high-performance finishing systems Type de document : texte imprimé Auteurs : Helmut Will, Auteur ; Karl Fischer, Auteur Année de publication : 1991 Article en page(s) : p. 49-68 Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Administrative control laws and regulations on air pollution are in existence in many countries.
Leather finishing is chiefly affected, and enforcements of these regulations will make the use of finishes based on organic solvents more difficult in the future.
Likewise the use of formaldehyde has to be reduced considerably due to its strong irritating effect on the mucus membranes.
Today,we can manage to produce solventfree finishes and finishes based on protein which possess good physical properties,wet and dry.By the use of carefully selected binders,topcoating agents based on acrylics and urethanes,and crosslinkers it is possible to develop "high performance" finishes.The emission of V.O.C.'s can also be reduced to a large degree by using new application methods,such as rollcoating.En ligne : https://drive.google.com/file/d/1pduqBykajiZo5kETusJ3TSkG2n6l-ZQz/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8587
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Code-barres Cote Support Localisation Section Disponibilité 006877 - Périodique Bibliothèque principale Documentaires Disponible
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| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| 006877 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |
