Preparation and application of cationic soap-free latex as a filling agent / Jin Liqiang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 4 (07-08/2005)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 4 (07-08/2005) . - p. 169-173 Titre : Preparation and application of cationic soap-free latex as a filling agent Type de document : texte imprimé Auteurs : Jin Liqiang, Auteur ; Xu Qinghua, Auteur ; Li Yanchun, Auteur ; Liu Zonglin, Auteur Année de publication : 2005 Article en page(s) : p. 169-173 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Charges (matériaux) Copolymères Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Cuirs et peaux de porcs Formulation (Génie chimique) Latex Polymérisation en émulsion Retannage Surfactants Tannage au chrome Wet-blue (tannage) Peau tannée au chrome (le chrome donne une couleur bleue) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A cationic soap-free latex for use as a filling agent has been prepared by batch emulsion polymerization in the presence of a polymerizable surfactant. The product has been characterized by FTIR and TGA; the colloid properties of the latex particles have also been studied. The characteristics and effects of the latex as a filling agent have been investigated by measuring such physical/mechanical indexes of treated leather as tensile strength, thickness increment ratio, elongation at break, bursting height and also by instrumental analysis such as scanning electron microscopy (SEM) and colour analysis. It has been found that the cationic latex has a filling and softening ability and can improve the treated leather’s physical/mechanical properties and the affinity for anionic dyestuffs. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Preparation of DMHB - Preparation of copolymer emulsion - Characterization of cationic latex - Application formulations - Determination of leather properties - RESULTS AND DISCUSSION : Preparation of cationic soap-free latex - Application results - Table 1 : The monomers used in the polymerization reactions to prepare the FR seies of cationic filling agents - Table 2 : Retanning and fatliquoring formulation of blue pigskin garment leather - Table 3 : The colloid properties of cationic latexes - Table 4 : Physical and mechanical properties of chromed leather treated with the FR series En ligne : https://drive.google.com/file/d/1w7VhN8VmOnoQ_xegyeMvehC-I-VDRqKr/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39247 [article]

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Synthesis and application of an amphoteric acrylic polyelectryte as a retanning agent / Jin Liqiang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 3 (05-06/2004)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 88, N° 3 (05-06/2004) . - p. 105-109 Titre : Synthesis and application of an amphoteric acrylic polyelectryte as a retanning agent Type de document : texte imprimé Auteurs : Jin Liqiang, Auteur ; Liu Zonglin, Auteur ; Xu Qinghua, Auteur ; Li Yanchun, Auteur Année de publication : 2004 Article en page(s) : p. 105-109 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage Composés amphotériques Copolymères -- Synthèse Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Cuirs et peaux de porcs Formulation (Génie chimique) Polyacryliques Polyélectrolytes Retannage Tannage au chrome Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : An amphoteric acrylic copolymer of acrylic acid(AA) and methylacrylethyltrimethylammonium chloride (DMC) has been synthesized by free radical copolymerization using ammonium persulfate as the catalyst at 75°C for 4hrs.The structure of the polyelectrolyte has been characterized by FTIR and 13C NMR.The solution properties of the polymer have also been studied. The correlation between the comonomer ratio of the amphoteric polyelectrolyte and its application properties as a retanning material has been investigated by measuring such physical/ mechanical indexes of the retanned leather as thickness increment ratio, shrinkage temperature, tensile strength, unit load elongation and also by instrumental analysis such as scanning electron microscopy (SEM), X-ray diffraction (XRD) and colour analysis. It has been found that the amphoteric polymer tanning agent has a strong retanning ability and has no negative effect on the dyeing of the retanned leather under proper conditions. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Preparation of the copolymer - STRUCTURE DETERMINATION OF THE COPOLYMER - SOLUTION PROPERTIES - RETANNAGE APPLICATION : Determination of leather properties - RESULTS AND DISCUSSION : Synthesis of copolymer - SOLUBILITY OF THE COPOLYMER - APPLICATION RESULTS - Table 1 : The reaction conditions and results for preparing the AR series of retannages - Table 2 : Retanning formulation of blue pigskin garment leather - Table 3 : Physical and mechanical propertis of chromed leather retanned by AR series copolymer En ligne : https://drive.google.com/file/d/1I9awenD9B3UvyzDc5202rtW_IRoiiwyN/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39636 [article]

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Synthesis and application of fluorinated acrylate copolymer as a retanning agent / Jin Liqiang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 4 (07-08/2006)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 4 (07-08/2006) . - p.159-163 Titre : Synthesis and application of fluorinated acrylate copolymer as a retanning agent Type de document : texte imprimé Auteurs : Jin Liqiang, Auteur ; Li Yanchun, Auteur ; Xu Qinghua, Auteur Année de publication : 2006 Article en page(s) : p.159-163 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage Allongement à la rupture Caractérisation Copolymères -- Synthèse Copolymères acrylates fluorés Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Formulation (Génie chimique) Perméabilité Polyaddition Résistance à l'humidité:Résistance à l'eau Résistance à la traction Retannage Tannage synthétique Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A fluorinated acrylate copolymer of dodecafluoroheptyl methacrylate (FA) and methacrylic acid (MAA) has been synthesized by free radical copolymerization using azobisisobutyronitrile as the catalyst at 75°C for 6hrs in dioxane. The structure of this copolymer was characterized by Fourier transformation infrared spectrum (FTIR), proton nuclear magnetic resonance (1H-NMR), elemental analysis, differential scanning calorimetry (DSC), and gel permeation chromatography (GPC). The characteristics and effects of the copolymer as a retanning material have been investigated by measuring such physical/mechanical indexes as the tensile strength, thickness increment ratio, elongation at break, static water resistance and air permeability Instrumental analysis such as scanning electron microscopy and X-ray energy spectrum (SEM-EDAX) was also employed. The results indicate that this fluorinated acrylate copolymer tanning agent has good filling cum retanning ability and can improve the treated leather’s physical/mechanical properties and water repellency. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Preparation of the copolymer - Characterization of the copolymer - APPLICATION FORMULATIONS : Determination of leather properties - RESULTS AND DISCUSSION : Synthesis of copolymer - Application results - Scanning electron microscopy and X-ray energy spectrum (SEM-EDAX) examination - Table 1 : The reaction conditions and results for preparing Poly (FA-co-MAA) - Table 2 : Retanning and fatliquoring formulation of blue goat shoe leather - Table 3 : The composition of Poly (FA-co-MAA) - Table 4 : Physical and mechanical properties of leather treated by fluorinated acrylic polymer - Table 5 : The elemental analysis results through SEM-EDAX En ligne : https://drive.google.com/file/d/1PHFsxXJ59Xvb2-q630r7ui_01idTr8aU/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39114 [article]

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