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Acrylic polymeric binder for leather finishing application / Michael Ifeanyichukwu Ugbaja / Saarbrücken [Germany] : Lambert Academic Publishing (2016)
Titre : Acrylic polymeric binder for leather finishing application : Water vapour permeability and some other physical properties of leathers - Effect of finish formulations Type de document : texte imprimé Auteurs : Michael Ifeanyichukwu Ugbaja, Auteur ; Ejila Amali, Auteur Editeur : Saarbrücken [Germany] : Lambert Academic Publishing Année de publication : 2016 Importance : IX-84 p. Présentation : ill. Format : 22 cm ISBN/ISSN/EAN : 978-3-659-91685-4 Prix : 49,90 E Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Cuirs et peaux -- Finition
Cuirs et peaux -- Propriétés physiques
Formulation (Génie chimique)
Liants
Perméabilité
Plan d'expérience
Polyacryliques
Polymérisation en émulsion
Retannage
Tannage
Vapeur d'eauIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This book is a simple and concise introduction to the effect of polymeric binders in the performance of a finished leather. It aims at exposing the formulation requirements of certain acrylic resin binder suitable for leather finishing applications. The materials are presented in a manner to benefit both the students studying leather science and technology or leather engineering in tertiary institutions as well as those in the leather industry whose knowledge in this technology is deficient. Students of polymer science and technology will also appreciate the contents of this book as it tries to study the effect acrylic polymer resin in the performance of finished leathers. This book will assist mostly undergraduates in understanding the processes of leather making,formulation of finishing agents, properties and behavior of finished leather. It will also benefit those with little or no technical background in leather processes as well as those who have sophisticated background in science but no experience in the leather industry. It will also make for a good reading material for the general public that are yet to know what synergy exist between polymers and leather. Note de contenu : - GENERALITES : Description of leather - Forms of leather - Types of leather - Leather manufacturing processes - Acrylic polymer - Polymerisation techniques - Components of emulsion polymerisation reaction - Principle of emulsion polymerisation - Leather finishing
- REVIEW OF LITERATURE : General introduction - Synthetic resin dispersions for leather finishing - Synthesis of polymer dispersions - Characterisation of polymer dispersions and effect on properties of retanned leathers - Factors affecting physical properties of finished leathers - Retannage and properties of finished leathers - Water vapour permeability, wvp of finished leathers - Effect of important variables on water vapor permeability
- DESIGN OF EXPERIMENT : Experimental procedures
- RESULTS : Examination of resin binder - Physical testing of the finished leather substrate
- DISCUSSION
- CONCLUSION AND RECOMMENDATIONS
- ANNEXES : A. Some chemicals used in leather processing - B. Definition of some leather processing termsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36813 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23152 675 IFE Monographie Bibliothèque principale Documentaires Disponible Documents numériques
Acrylic polymeric binder for leather finishing application : Water vapour permeability and some other physical properties of leathers - Effect of finish formulationsURL Acrylic syntans - versatile tanning materials / William C. Prentiss in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXX (Année 1975)
[article]
Titre : Acrylic syntans - versatile tanning materials Type de document : texte imprimé Auteurs : William C. Prentiss, Auteur ; Charles R. Sigafoos, Auteur Année de publication : 1975 Article en page(s) : p. 481-497 Note générale : Appendix - Bibliogr. Langues : Américain (ame) Catégories : Chaussures
Cuirs et peaux de porcs
pH
Polyacryliques
Prétannage
QuebrachoLe quebracho est un arbre à écorce ligneuse, mesurant 30 mètres de haut, à feuilles tannées et à fleurs tubulées blanches.
Quebracho est l'un des noms communs, en espagnol, d'au moins trois espèces similaires d'arbres originaires du Gran Chaco, en Amérique latine : Schinopsis lorentzii (quebracho colorado santiagueño), de la famille des Anacardiaceae ; Schinopsis balansae (quebracho colorado chaqueño), de la même famille ;
Aspidosperma quebracho-blanco (quebracho blanc), de la famille des Apocynaceae.
Ces trois espèces sont riches en tanin et fournissent un bois très dur, particulièrement résistant. Leur nom provient de l'espagnol quiebrahacha, qui signifie brise-hache.
Retannage
Syntans
Tannage au chrome
Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-Synthétique
Tannage synthétique
Tannage végétal
Tige de la chaussure
VêtementsIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Acrylic resins have been utilized for decades in the finishing of leather, and literature references are available for their use in finishing and in retanning processes. There is little in the current literature, however, on acrylic syntans for use in tanning or retanning, although such products have been available commercially since the early 1960's. In 1966, a Netherlands patent and, in 1969, a United States patent were issued covering the basic composition and use of an acrylic polymer prepared in the presence of a sulfated oll for use in the preparation of leather. A paper read at the Northampton group of the SLTC covered the known properties of one of these novel retanning materials. More recently, a patent was issued to cover copolymers of unsaturated acids and quaternized tertiary amines, although products of this type are not normally available. Note de contenu : - USE OF ACRYLIC SYNTAN WITH CHROME TANNING : As a chrome exhaust aid - As a pretannage
- USE OF ACRYLIC SYNTAN IN RETANNING OF CHROME LEATHER : Review of precious work - Effect of pH to control deposition - Buffered retannages - Combination retannages with vegetable extract
- CURRENT RETANNAGES FOR VARIOUS LEATHERS
- Table 1 : Acrylic syntan - typical values
- Table 2 : Syntan influence on chrome exhaustion
- Table 3 : Acrylic syntan compared as pretan or retan
- Table 4 : Acrylic syntan pretan in salt-free pickle chrome content of leathers
- Table 5 : Effect of pH of retannage on leather properties
- Table 6-A : Effect of buffers on leather properties
- Table 6-B : Effect of buffers on leather properties
- Table 7 : Acrylic syntan in combination with vegetable
- Table 8 : Buffered acrylic plus quebracho retannage
- Table 9 : Buffered retannage for white, full grain side leather
- Table 10 : Soft pigskin for garment leather
- Table 11 : Retannage for white pigskin
- Table 12 : Retannage for shoe side upper leather
- Table 13 : Retannage for softy shoe or bootEn ligne : https://drive.google.com/file/d/1tJOg67zIbIoqEV2WZUuL8IAHhtGEvESE/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38793
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXX (Année 1975) . - p. 481-497[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 008509 - Périodique Archives Documentaires Exclu du prêt Adding value [valorization] to tannery fleshings : Part II - Effect of protein hydrolysates on leather dyeing / I. Bragança in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 3 (05-06/2013)
[article]
Titre : Adding value [valorization] to tannery fleshings : Part II - Effect of protein hydrolysates on leather dyeing Type de document : texte imprimé Auteurs : I. Bragança, Auteur ; H. Nouws, Auteur ; A. Crispim, Auteur Année de publication : 2013 Article en page(s) : p. 111-115 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Déchets -- Recyclage
Cuirs et peaux -- Teinture
Déchets -- Valorisation
Echarnage
Glutaraldéhyde
Hydrolysats de protéines
RetannageIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The tanning industry generates a high quantity of solid wastes. Therefore, there is a need to create valorization [added value] options for these wastes. The main objective of the present work was to study the effect of protein hydrolysates (HP) prepared from fleshings on leather dyeing. During previous studies it was found that the application of HP products, obtained from fleshings, in leather retannage intensified the colour of crust leather. In this work the CIELAB colour system was used to evaluate the effect of HP on retannage processes. The main conclusions of this study were: (i) HP can be used instead of a dicyanodiamide resin (Fortan DC) if the colour parameters of the standard procedure are to be maintained, and (ii) the replacement of an acrylic resin (Fortan A40) by glutaraldehyde-modified HP (GHP) results in a darker skin, and can therefore be interesting for the reduction of the quantity of dye used. En ligne : https://drive.google.com/file/d/1EHtGtnpl_byGnKXM02-muwHEK8ZIk1dB/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18839
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 97, N° 3 (05-06/2013) . - p. 111-115[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15193 - Périodique Bibliothèque principale Documentaires Disponible Aliphatic anionic polyurethane microemulsion leather filling-retanning agent / Bao Lihong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 2 (03-04/2007)
[article]
Titre : Aliphatic anionic polyurethane microemulsion leather filling-retanning agent Type de document : texte imprimé Auteurs : Bao Lihong, Auteur ; Lan Yunjun, Auteur ; Shufen Zhang, Auteur Année de publication : 2007 Article en page(s) : p. 73-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Caractérisation
Charges (matériaux)
Chimie analytique
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés physiques
Formulation (Génie chimique)
Imperméabilisation
Microémulsions
Poids moléculaires
Polymères aliphatiques
Polyuréthanes
RetannageIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The retanning process plays an important role in optimizing the leather’s colour, levelness, softness, fullness, and hydrophobicity. Polymer retanning agents are important materials for this process. The present study used maleic anhydride modified castor oil (MCO), PEG1000 (polyethylene glycol) and IPDI (isophorone diisocyanate) as main materials to synthesize polyurethane microemulsions (MC-PURs) and employed them to retan chrometanned leathers. The hydroxyl functionality of MCO was investigated by chemical and 1HNMR analysis, and confirmed to be about 2.0. The chemical structures of MCO, prepolymer and MC-PUR were characterized by IR.
The optimized synthesis formulation and polyurethane microemulsion MC-PUR3 for MC-PURs as retanning agent was selected by comparing the properties of retanned leathers, such as softness, fullness, grain tightness, tensile strength, extension at break, depth of shade, waterproof properties et al. Then, MC-PUR3 was characterized by means of DSC, TG/DTG and TEM techniques. SEM microgram of MC-PUR3 retanned leather shows that the fibres are well dispersed.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of maleic anhydride modified castor oil (MCO) - Preparation of microemulsions of polyurethane filling retanning agents (MC-PURs) - Determination of molecular weight - H n.m.r. spectroscopy - Purification - FT-IR spectroscopy - Differential scanning spectroscopy - Thermo-gravimetric analysis - Transmission electron microscope analysis - Measurement of final dyebath exhaustion - Physical and waterproofness properties of leathers - Organoleptic properties of the final leathers - Scanning electron microscopic analysis
- RESULTS AND DISCUSSION : Determination of the average molecular weight, hydroxyl number and average hydroxyl functionality (Fn(OH)) of MCO - Determination of the average hydroxyl functionality of MCO by chemical analysis - Determination of the average hydroxyl functionality of MCO by 1HNMR - Chemical structure analysis by IR
- OPTIMIZATION OF RETANNING AGENT : Effect of MCO/PEG1000 mass ratio on the properties of retanned leathers - Effect of carboxyl content of MC-PUR on the properties of retanned leathers - Effect of NCO/OH molar ratio on the properties of retanned leathers - Thermal properties of MC-PUR3
- Table 1 : Basic formulations of MC-PURs
- Table 2 : Filling, retanning and wet finishing processes
- Table 3 : Effect of MCO/PEG1000 mass ratio on the properties of retanned leathers
- Table 4 : Effect of carboxyl content of MC-PUR on the properties of retanned leathers
- Table 5 : Effect of NCO/OH molar ratio on the properties of retanned leathersEn ligne : https://drive.google.com/file/d/19ti2BicD3kfHFF4Z4QLX1cSWPC0J39gs/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39037
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 2 (03-04/2007) . - p. 73-80[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire An acrylic resin retanning agent with a reinforcing effect - Synthesised by hihg solids content microemulsion copolymerization / Wang Xuechuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 4 (07-08/2005)
[article]
Titre : An acrylic resin retanning agent with a reinforcing effect - Synthesised by hihg solids content microemulsion copolymerization Type de document : texte imprimé Auteurs : Wang Xuechuan, Auteur ; An Huari, Auteur ; Sun Ming, Auteur ; Luo Yanhong, Auteur ; Feng Jianyan, Auteur Année de publication : 2005 Article en page(s) : p. 164-168 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Caractérisation
Copolymères en émulsion
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de porcs
Granulométrie laser
Haut extrait sec
Latex
Microémulsions
Polyacryliques
Polymérisation en émulsion
Retannage
Tannage organique
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : An acrylic resin nano-size latex whose colloidal particle size was about 20nm and solids content about 25% was prepared by a high solids content semicontinuous microemulsion copolymerization. The experimental product was employed in retanning drop [bottom] splits of pigs aiming to reinforce the leather. The offer of cross-linking agent and functional monomer were varied in the copolymerization experiment and their effect on the reinforcing function was investigated. The effect of colloidal particle size and dosage of nano-size latex on the reinforcing function also was verified.
The particle size of the latex was tested with a laser particle size analyzer, and the composition of the copolymer was analyzed by infrared spectrometry. Multifunction material test equipment was used in the physical testing of the retanned leather.
The result of the experiment showed: when the dosage of divinylbenzene (DVB) was 1.2% and the dosage of acrylic acid (AA) 0.8%, the reinforcing performance was the highest. When the colloidal particle size decreased from 64.2nm to 16.3nm, the reinforcing effect was also enhanced.
The tensile strength increased by 68%, and the tear strength improved 44% after the drop splits of pigs were retanned with 2% acrylic resin nano-size latex (with respect to the shaved wet blue weight). The effect of the dosage of sodium lauryl sulphate (SLS), n-pentanol (PA), ammonium persulfate (ASP) and AA on the colloidal particle size was also studied.Note de contenu : - EXPERIMENTAL DETAILS : Materials - Synthesis
- APPLICATION OF NANO-SIZE LATEX IN RETANNING CHROME TANNED PIG DROP SPLITS : Characterization
- RESULTS AND DISCUSSION : Colloidal particle size of the microemulsion copolymer - The IR spectra of BA/MMA/DVB copolymers prepared by microemulsion copolymerization - The effect of functional monomer on the reinforcing function - The effect of cross-linking agent on the reinforcing function - The effect of colloidal particle size on the reinforcing function - The relationship between dosage of retanning agent and reinforcing effect
- Table 1 : Recipes used in the series of experiments and average particle size of synthesized latexes
- Table 2 : Process details for the retanning applications of nano-size latex on wet blue pig drop splitsEn ligne : https://drive.google.com/file/d/1GoIENUWkqhu85g-LTxdP-0cZzXD-IvPo/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39249
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 4 (07-08/2005) . - p. 164-168[article]Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire An exploration of enhancing thermal stability of leather by hydrophilicity regulation : effect of hydrophilicity of phenolic syntan / Sun Qingyong in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 4 (Année 2022)
PermalinkApplication of nonionic gemini aliphatic polyurethane surfactant for improving the performance of vegetable tanned leather / Shuangquan Lai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 11 (11/2019)
PermalinkApplication of Y-shaped polyurethane and polyacrylic acid as a complex retanning agent in aldehyde-tanned goat leather / Shuangquan Lai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 11 (11/2017)
PermalinkBase line : amphoteric implications / Olga Ballùs in LEATHER INTERNATIONAL, Vol. 217, N° 4861 (06/2016)
PermalinkBisphenol reduction in syntans and examples for extraction and migration of bisphenols from leather articles / Jochen Ammenn in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 5 (05/2024)
PermalinkCastor oil-rubberseed oil blend as a leather lubricant / A. S. Olawale in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 2 (03-04/2002)
PermalinkCharacteristics of aldehyde reactive dyes for leather dyeing and retanning process / Xiao Chen in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 10 (10/2015)
PermalinkComparative retanning performance of ecofriendly melamine resins produced using different condensing agents / Muhammad Naveed Ashraf in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 3 (05-06/2021)
PermalinkComparative study of glucose and sulfur dioxide reduced chrome powders / Ding Xiaoliang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 1 (01-02/2019)
PermalinkComparative study of retanning properties of melamine-glyoxal resins produced by different sulfonating agents / Muhammad Naveed Ashraf in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 5 (09-10/2022)
PermalinkConsideration of the vegetable tannin chromium-collagen system / D. A. Williams-Wynn in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 54, N° 1 (01/1970)
PermalinkCopolymères à base de tannins et déchets lignocellulosiques avec des matériaux synthétiques en substitution des sels de chrome pour applications en substitution / Caroline Simon / 2002
PermalinkDeciphering the role of individual retanning agents on physical properties of leathers / Murali Sathish in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 3 (03/2019)
PermalinkA deeper exploration of the relation between sulfonation degree and retanning performance of aromatic syntans / Qingyong Sun in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
PermalinkDétannage et retannage de cuirs en croute prétannés végétal-synthétique provenant de petites peaux in TECHNICUIR, N° 10 (12/1972)
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