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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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Side reactions from the reduction of azo dyes with dithionite / Alois Püntener in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 80, N° 1 (01-02/1996)
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Titre : Side reactions from the reduction of azo dyes with dithionite Type de document : texte imprimé Auteurs : Alois Püntener, Auteur ; Jens Fennen, Auteur ; C. T. Page, Auteur Année de publication : 1996 Article en page(s) : p. 1-5 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The recently introduced amendment to the Consumer Goods Act in Germany concerns itself with the prohibition of the manufacture, marketing and import of consumer goods dyed with those azo dyes, which by cleavage of the azo bond(s) can liberate certain toxic listed aromatic amines. Inmany laboratory analytical methods the reduction of the azo bond is accomplished by treatment with sodium dithionite. However, using this strong reducing agent more than just the azo groups can be cleaved as specified in ther German Act. In some cases even new amines can be generated which are neither part of the dye structure nor involved in the synthesis of the dye. These additional amines are formed by a side reaction due to the analytical procedure used and can thus lead to incorrect analytical results. The example reported here relates to the formation of 4-aminodiphenyl, when the diazo component is aniline. En ligne : https://drive.google.com/file/d/17QGfHnQspIRDUwVKSRFj5CYbROGA4O0T/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8192
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 80, N° 1 (01-02/1996) . - p. 1-5[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007008 - Périodique Bibliothèque principale Documentaires Disponible Silica-embedded polyurea microspheres with rough surface for matte leather finishing / Liang Jia in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 5 (05/2022)
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Titre : Silica-embedded polyurea microspheres with rough surface for matte leather finishing Type de document : texte imprimé Auteurs : Liang Jia, Auteur ; Li Wang, Auteur ; Jing Li, Auteur ; Jun Xiang, Auteur ; Yi Chen, Auteur ; Haojun Fan, Auteur Année de publication : 2022 Article en page(s) : p. 184-194 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Finition
Microsphères
Polymères en émulsion
Polyurée
Polyuréthanes
Rugosité
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A type of polyurea microspheres with rough surfaces and different sizes (1-12 μm), which was used for waterborne polyurethane matte leather coating, were prepared by precipitation polymerization in H 2 O/acetonitrile system, using isophorone diisocyanate as polymerized monomer, 2,4-diaminobenzenesulfonic acid sodium salt as hydrophilic monomer and nano-SiO 2 as surface roughener. The effect of the loading of isophorone diisocyanate and 2,4-diaminobenzenesulfonic acid sodium salt, the volume ratio of H 2 O/acetonitrile and the addition stage of nano-SiO 2 on the particle size and surface roughness were investigated so as to achieve the excellent matte effect of the coating. The results indicated that the adding of hydrophilic monomer can reduce the particle size of microspheres and improve its re-dispersibility in water, while the increase of the proportion of acetonitrile in the mixed solvent and the loading of polymerized monomer can enlarge the size of the polyurea microspheres. As surface roughener, with the increase of nano-SiO 2 loading, the surface roughness and the particle size of microspheres increase. When nano-SiO 2 is added at the stage of the reaction system getting turbid, the maximum surface roughness of polyurea microspheres can be achieved. Polyurea microspheres with particle size (1-2 μm) and high surface roughness have better matting effect, and the gloss of the prepared waterborne polyurethane coating can be adjusted to less than 1.6° (60°-incident Angle). Note de contenu : - EXPERIMENTAL : Materials - Preparation of polyurea microspheres with different surface roughness - Preparation of WPU matte coating - Characterization
- RESULTS AND DISCUSSION : Structural of polyurea microspheres - Influence of MPDSA-Na loading on microsphere size and its re-dispersibility - Influence of H2O/AN volume ratio on microsphere size - Influence of IPDI loading on microsphere size - Effect of nano-SiO2 loading on surface roughness of polyurea microspheres
- Influence of nano-SiO2 addition stage on surface roughness of polyurea microspheres - Influence of different polyurea microspheres on the gloss of WPU coating
- Table 1 : Dn and Dn/Dw of polyurea microspheres at different MPDSA-Na loading
- Table 2 : Dn and Dn/Dw of polyurea microspheres at differentH2O/AN
- Table 3 : Dn and Dn/Dw of polyurea microspheres at different IPDI loading
- Table 4 : Dn and Dn/Dw of polyurea microspheres at different nano-SiO2 loading
- Table 5 : The polyurea microspheres with different sizes and size distributionDOI : https://doi.org/10.34314/jalca.v117i5.4913 En ligne : https://drive.google.com/file/d/11yBWz4C1N2hxkNkOsI_QcjBpR8gbfic2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37568
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 5 (05/2022) . - p. 184-194[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23398 - Périodique Bibliothèque principale Documentaires Disponible Silicates for raw hyde curing / K. Munz in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CII, N° 1 (01/2007)
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Titre : Silicates for raw hyde curing Type de document : texte imprimé Auteurs : K. Munz, Auteur Année de publication : 2007 Article en page(s) : p. 16-21 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In a European funded R&D - project, an international group of leather institutes, tanneries and auxiliary suppliers developed new raw hide curing methods. Objective was to substitute common salt by neutralized alkali silicates, either applied as powder or by drum penetration. Both methods lead to excellent curing results, significant reduction of TDS and nearly full elimination of salt in soaking liquors. No impact on leather quality, produced from silicate-cured hides and skins was observed. Accidentally it was found that the application of silicate-containing soaking liquors for irrigation leads to improved plant growth and yield. En ligne : https://drive.google.com/file/d/1vXnGv3eUxuhOdL4mC7G141YmGb2kUQ0d/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3373
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CII, N° 1 (01/2007) . - p. 16-21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006036 - Périodique Bibliothèque principale Documentaires Disponible A simple and effective method for Cr(VI) analysis in dyed leathers / R. Ganeshjeevan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIX, N° 1 (01/2004)
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Titre : A simple and effective method for Cr(VI) analysis in dyed leathers Type de document : texte imprimé Auteurs : R. Ganeshjeevan, Auteur ; Raghavan Chandrasekar, Auteur ; S. Shanmuga Priya, Auteur ; Ganga Radhakrishnan, Auteur Année de publication : 2004 Article en page(s) : p. 12-15 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Spectrophotometric detection of Cr(VI) by 1,5-diphenylcarbazide derivatization method recommended by the IUC-18 protocol suffers seriously due to the interference of colorants present in dyed leather extracts. Recently a C-18 reverse phase cartridge clean up for the color removal was recommended but the method has limitations. The present paper suggests an alternate material, which serves better for the removal of interfering colors. This method is rapid, very effective, and economic for the detection of Cr(VI) in finished leathers. En ligne : https://drive.google.com/file/d/1ttG-bU7UwAsMPVTEnfdl-6UQMtUsg_QX/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4172
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Code-barres Cote Support Localisation Section Disponibilité 001596 - Périodique Bibliothèque principale Documentaires Disponible 001609 - Périodique Bibliothèque principale Documentaires Disponible A simple approach to leather process investigation / P. Laight in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 58 (Année 1974)
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Titre : A simple approach to leather process investigation : Part 1 - Standardisation of the leather manufacturing process Type de document : texte imprimé Auteurs : P. Laight, Auteur ; Alan Gordon Ward, Auteur ; S. Wolstenholme, Auteur Année de publication : 1974 Article en page(s) : p. 88-99 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés mécaniques
Essais (technologie)
Essais dynamiques
Mesure
Poids
Procédés de fabrication
Surfaces (Physique)
TannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : A standard process for the production of chrome side leather has been developed, based on studies of individual operations as well as on a critical study of the complete process selected. Details of the equipment evolved for the process, the process conditions and the chemicals employed are outlined. Preliminary results are reported for weight and area variation of hide segments at the various stages of the process. Physical tests have been carried out at selected locations on the segments of unfinished leather. The process finally chosen provides a satisfactory basis from which to study selected process variations. Note de contenu : - Development of the standard process
- Process details : Chemicals and conditions - Techniques
- Test method details : Weight and area measurement - Subjective and objective physical testing - Chemical tests
- Results : Raw material variations - Weight and area variations during processing - Implications - Chemical results - Objective and subjective physical results
- Table 1 : Conditions used in testing tensile samples (instrument : Instron 1112 chart recorder)
- Table 2 : Average hide weights and areas
- Table 3 : Weight variations after pre-tannage sub-process
- Table 4 : Weight variations after tannage and post-tannage sub-processes
- Table 5 : Weight after brine pile as % of washed weight
- Table 6 : Analytical results
- Table 7 : Linear extension (see also table IX)
- Table 8 : Grain crack (d) and rupture (e) lastometer distention values (mm)
- Table 9 : Maximum stress during tear (kg mm-1) (f), extension at rupture (%) for linear extension (g)
- Table 10 : Overall segment averages for physical test resultsEn ligne : https://drive.google.com/file/d/1A95K1AY5enimAV7QKWOFMsiV7ZNnQaQG/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35484
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 58 (Année 1974) . - p. 88-99[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 008594 - Périodique Archives Documentaires Exclu du prêt A simple approach to leather process investigation / P. Laight in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60 (Année 1976)
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PermalinkA simple approach to leather process investigation part 3 - The development of the modified standard process for side leather / Ibrahim Elrufai abuelhassan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 68 (Année 1984)
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PermalinkA simple approach to leather process investigation part 4 - The introduction of variants in the drying process / Ibrahim Elrufai abuelhassan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 68 (Année 1984)
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PermalinkA simple method for the combined determination of both zirconium and aluminium in leather and tanning solutions / L. J. Stephens in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. N° 71 (Année 1987)
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PermalinkA simple method of assessing the grain treatment of finished leather / J. H. Bavinton in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XXVII (Année 1982)
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PermalinkA simple test to determine the propensity of a sample of leather to the formation of chromium / Joaquim Font in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 2 (02/2018)
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PermalinkSimulation of realistic fur texture based on piece element synthesis / Wei Wang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 12 (12/2022)
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PermalinkSimultaneous determination of chloride and sulfide in tannery effluents by low pressure ion-exclusion chromatography with post-column spectrophotometric detection / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 5 (09-10/2010)
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PermalinkSimultaneous determination of N-methyl-2-pyrrolidone (NMP) and N-ethyl-2-pyrrolidone (NEP) in leather by gas chromatography-mass spectrometry / Sang Jun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 3 (05-06/2015)
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PermalinkPermalinkSingle step hair removal and fiber opening process : Simultaneous and successive addition of protease and a-amyiase / Palanisamy Thanikaivelan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 11 (11/2006)
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PermalinkSize-exclusion chromatography of organic acid-masked aluminum complexes and the determination of combined acid/aluminum ratio of the fractions / Tingyou Zhang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXXI, N° 4 (04/1996)
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PermalinkPermalinkSkin characteristics of Cervus Elaphus L. from Republic of Tuva in Russia / Urana Dandar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 5 (05/2014)
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PermalinkSkin parasites : a strategic approach to control / Paul Pearson in WORLD LEATHER, Vol. 9, N° 3 (05/1996)
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PermalinkPermalinkSky fruit seed crush (SFSC) / Md. Abdur Razzaq in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 6 (06/2024)
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PermalinkPermalinkSLTC chemical analysis committee / G. N. Rowley in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 73 (Année 1989)
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PermalinkSLTC draft fastness test method in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 76, N° 6 (11-12/1992)
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