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Acrylic-cellulose acetate butyrate automotive lacquers / D. A. Raval in PAINTINDIA, Vol. XLVIII, N° 11 (11/1998)
[article]
Titre : Acrylic-cellulose acetate butyrate automotive lacquers Type de document : texte imprimé Auteurs : D. A. Raval, Auteur ; Ashok Dighe, Auteur ; T. J. M. Sinha, Auteur Année de publication : 1998 Article en page(s) : p. 43-46 Note générale : Bibliogr.
Langues : Anglais (eng) Tags : 'Matériau revêtement' Peinture Vernis 'Industrie automobile' Liant 'Méthacrylate méthyle copolymère' butyle' 'Cellulose acétobutyrate' Formulation 'Propriété physique' mécanique' Feuil Index. décimale : 667.9 Revêtements et enduits Résumé : Automotive lacquers were prepared in the laboratory using copolymers of methyl methacrylate and butylmethacrylate (in varying weight ratios) in combination with cellulose acetate butyrate, castor oil base plasticiser, linear plasticiser, solvents and pigments. Note de contenu : - EXPERIMENTAL : Materials : Present studies were performed with - Introduction of lacquer manufacture - Upgrading the mechanical properties of lacquers - Compatibility test - Preparation of pigmented lacquers - A characteristics of a NC lacquer
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13181
in PAINTINDIA > Vol. XLVIII, N° 11 (11/1998) . - p. 43-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006481 - Périodique Bibliothèque principale Documentaires Disponible Chlorinated butyl acrylate - methyl methacrylate copolymer : A novel film former / S. Bhandari in PAINTINDIA, Vol. XLV, N° 6 (06/1995)
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Titre : Chlorinated butyl acrylate - methyl methacrylate copolymer : A novel film former Type de document : texte imprimé Auteurs : S. Bhandari, Auteur ; S. Chandra, Auteur Année de publication : 1995 Article en page(s) : p. 27-32 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Peinture Liant 'Copolymère acrylate de butyle' 'Polymétacrylate méthyle' Chloration chlore' 'Stabilité thermique' 'Propriété mécanique' Feuil chimique' 'Résistance feu' 'Etude expérimentale' Index. décimale : 667.9 Revêtements et enduits Résumé : Maximum 25.6 per cent chlorine content could be achieved during the chlorination of butyl acrylate - methyl methacrylate copolymer. Infrared analysis revealed that chlorine enters only in the main chain by the substitution reaction. The thermal stability was found increasing with the chlorine content. Chlorinated copolymer possessed superior film properties as compared those of the unchlorinated except in terms of flexibility and adhesion. The property of resistance to fire was also introduced in the copolymer on chlorination. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of Poly (butyl acrylate) - Chlorination of Poly (butyl acrylate) - Synthesis and chlorination of butyl acrylate - methyl methacrylate copolymer - Infrared analysis - Determination of thermal stability - Mechanical and chemical film properties - Test for fire resistance
- RESULTS AND DISCUSSION : Viscosity and solubility - Substitution of chlorine - Thermal stability - Flexibility and adhesion - Impact resistance - Scratch hardness - Water, acid and alkali resistance - Fire resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13643
in PAINTINDIA > Vol. XLV, N° 6 (06/1995) . - p. 27-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006452 - Périodique Bibliothèque principale Documentaires Disponible Cycloaliphatic epoxide crosslinkable core-Shell latexes / Mark D. Soucek in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 921 (10/2001)
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Titre : Cycloaliphatic epoxide crosslinkable core-Shell latexes : A new strategy for waterborne epoxide coatings Type de document : texte imprimé Auteurs : Mark D. Soucek, Auteur ; Ganghua Teng, Auteur ; Shoabing Wu, Auteur Année de publication : 2001 Article en page(s) : p. 117-125 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Matériau revêtement' 'Peinture phase aqueuse' émulsion' Formulation Liant 'Résine époxyde' 'Polymère réticulé' Latex 'Polyméthacrylate méthyle' 'Polyacrylate butyle' hydroxyéthyle' 'Acide méthacrylique' Préparation 'Etude expérimentale' 'Particule core shell' Index. décimale : 667.9 Revêtements et enduits Résumé : New core-shell acrylic latexes designed for crosslinking with cycloaliphatic diepoxides were prepared. The core consisted of methyl methacrylate (MMA), butyl acrylate (BA), 2-hydroxyethyl methacrylate (HEMA), and the shell MMA, BA, and methacrylic acid (MAA). A strong acid acrylate was incorporated into the shell to catalyze the crosslinking reactions. The diepoxide crosslinker was introduced into the latex formulation via three methods: (1) added with the monomers during the polymerization of the latex, (2) added after the preparation of the latex in an organic solvent, and (3) added as a separate emulsion. The stability of epoxide was shown to be dependent on latex morphology, initiator system, and reaction conditions. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5766
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 921 (10/2001) . - p. 117-125[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001229 - Périodique Bibliothèque principale Documentaires Disponible Free volume distribution during consolidation and coalescence of latex films / A. J. Hill in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 913 (02/2001)
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Titre : Free volume distribution during consolidation and coalescence of latex films Type de document : texte imprimé Auteurs : A. J. Hill, Auteur ; J. D. Cloyd, Auteur ; D. L. Murray, Auteur ; R. R. Stockl, Auteur ; P. P. Shang, Auteur ; R. L. McGill, Auteur ; M. R. Tant, Auteur Année de publication : 2001 Article en page(s) : p. 115-124 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Coalescence (Sciences physiques)
Latex
Polyméthacrylates
Revêtements en phase aqueuse:Peinture en phase aqueuseTags : 'Peinture émulsion' Latex 'Formation de film' Consolidation Coalescence 'Polyméthacrylate butyle' d'isobutyle' 'Volume libre' Annihilation positon 'Microscopie à force atomique' Index. décimale : 667.9 Revêtements et enduits Résumé : The focus of the work is the effect of molecular architecture on free volume distribution during consolidation and coalescence of aqueous latex emulsions. Two series of model emulsion polymers, iso-butyl methacrylate (i-BMA) and normal-butyl methacrylate (n-BMA) dispersions with varying level of trimethylolpropanetriacrylate (TMPTA) crosslinker, are studied. Coatings are characterized by positron annihilation lifetime spectroscopy (PALS), and atomic force microscopy (AFM). Formation of coherent brittle films without significant interdiffusion is achieved by consolidation below the glass transition temperature (Tg). Consolidation, or ordering/compaction of films following water evaporation at temperatures below the MFFT, results in a decrease in the relative free volume element size, Tau 3, as measured by PALS. An increase in the characteristic relaxation time for the consolidation process is evident as TMPTA levels and corresponding gel fraction increase. Consolidation below Tg is accompanied by physical aging. Coalescence and interdiffusion are achieved by annealing films at or above Tg. Annealed coatings show a decrease in Tg and an increase in PALS free volume attributed to erasure of physical aging in combination with the action of the surfactant (sodium dodecyl sulfate) as a plasticizer. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5693
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 913 (02/2001) . - p. 115-124[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001221 - Périodique Bibliothèque principale Documentaires Disponible Novel chlorinated film formers for high performance coatings / S. Bhandari in PAINTINDIA, Vol. XLV, N° 7 (07/1995)
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Titre : Novel chlorinated film formers for high performance coatings Type de document : texte imprimé Auteurs : S. Bhandari, Auteur ; S. Chandra, Auteur Année de publication : 1995 Article en page(s) : p. 19-35 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Peinture Liant 'Polymère chlore' 'Résine alkyde' Préparation Chloration 'Huile soja' 'Corps gras végétal' époxyde' 'Polyacrylate de butyle' 'Copolymère acrylate méthacrylate méthyle' 'Propriété thermique' mécanique' chimique' Feuil 'Article synthèse' Index. décimale : 667.9 Revêtements et enduits Résumé : Chlorinated alkyds, epoxy esters and butyl acrylate-méthyl methacrylate (BA-MMA) copolymers were synthesised by bubbling dry chlorine gas in carbon tetrachloride solution. The chlorination of DCO alkyd was studied both in the absense as well as in the presence of iodine catalyst. Soybean and nigerseed oil alkyds and linsseed oil epoxy ester were, however, chlorinated without catalyst only. The chlorination of BA-MMA copolymer was performed in the presence of UV light.
It was found that the maximum chlorine content of about 50-55 per cent could be achieved in DCO, soybean and nigerseed oil alkyds and linseed oil epoxy ester. Five samples each of chlorinated DCO, soybean and nigerseed oil alkyds and four samples of chlorinated epoxy ester, varying in the chlorine content, were synthesized in order to study the effect of chlorine. In the case of BA-MMA copolymer maximum chlorine content about 26 per cent was obtained. One more sample of chlorinated BA-MMA copolymer, with lesser chlorine content, was synthesized for comparison purposes.
It was confirmed through IR spectroscopy that chlorine enters only into the aliphatic portions of all the three alkyds and epoxy ester molecules by addition and substitution reactions and only into the aliphatic main chain of the BA-MMA copolymer molecule by substitution reaction.
Thermal stability of all the chlorinated products was determinated by the Bloomfield test and by the weight loss procedure and compared with that of the commercial sample of chlorinated rubber. It was found that the termal stability increases with the chlorine content. In the case of chlorinated BA-MMA copolymers, the thermogravimetric analysis (T.G.A) was also carried out which further confirmed that the thermal stability increases with the chlorine content.
All the products were characterized for sulubility, compatibility, colour viscosity, iodine value, epoxide equivalent and molecular weight. The mechanical and chemical film properties were also appraised simultaneously which revealed that, in general, the cholorinated products possessed superior film properties as compared to those of the unchlorinated ones expect in terms of flexibility and adhesion and solvent resistance.
All the chlorinated products also passed the standard tests for protection against corrosion and resistance to salt-spray and fire, justifying their application in high performance coatings.Note de contenu : - Important materials
- Chlorinated DCO alkyds : Preparation of alkyd - Chlorination - Samples prepared
- Chlorinated soybean oil alkyds : Preparation of alkyd - Chlorination - Samples prepared
- Chlorinated nigerseed oil alkyds : Preparation of alkyd - Chlorination - Samples prepared
- Chlorinated epoxy esters : Preparation of epoxy ester - Chlorination - Samples prepared
- Chlorinated acrylics : Preparation of poly (butyl acrylate) - Chlorination - Preparation of chlorinated butyl acrylate-methyl methacrylate (BA-MMA) copolymer - Sample prepared
- Characterization : Solubility and compatibility - Colour - Viscosity - Addition/substitution of chlorine - Thermal stability
- Evaluation : Drying time - Flexibility and adhesion - Impact resistance - Scratch hardness - Water, acid and alkali resistance - Solvent resistance - Protection against corrosion - Resistance to salt-spray - Fire resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13620
in PAINTINDIA > Vol. XLV, N° 7 (07/1995) . - p. 19-35[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006454 - Périodique Bibliothèque principale Documentaires Disponible Organotin copolymer binders for self polishing antifouling paints (SPC's) : Performance of SPC A/F paints in relation to polymerization conditions and binder composition / S. Pal in PAINTINDIA, Vol. XLVI, N° 4 (04/1996)
PermalinkPreparation and characterization of weather resistant silicone/acrylic resin coatings / Hong-Soo Park in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 936 (01/2003)
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