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Moisture cured coatings based on chemoenzymatically modified linseed oil / Vilas D. Athawale in PAINTINDIA, Vol. LV, N° 10 (10/2005)

[article]  inPAINTINDIA > Vol. LV, N° 10 (10/2005) . - p. 57-66 Titre : Moisture cured coatings based on chemoenzymatically modified linseed oil Type de document : texte imprimé Auteurs : Vilas D. Athawale, Auteur ; K. R. Joshi, Auteur Année de publication : 2005 Article en page(s) : p. 57-66 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : One component, moisture cure polyurethane resins were synthesised based on monoglycerides of linseed oil. Linseed oil was transesterified with n-butanol at near ambient temperature using lipase as a catalyst. Monoglyceride from the resultant transesterification product (TP) was separated using column chromatography (hexane: chloroform, 80: 20) and was further reacted with aromatic and aliphatic isocyanates in different NCO/ OH ratio to form NCO terminated polyurethane resins. Polyurethane resins synthesized by this method were very light in color as compared to conventional ones obtained from the chemically catalysed transesterification reactions at high temperatures. Significant differences in the hardness, adhesion, flexibility, impact resistance and chemical resistance were noticed when different NCO/ OH ratio of isocyanate precursors were used. Note de contenu : - Characterization - High performance thin layer chromatography - Coating properties of polyurethane resins - Enzyme catalysed transesterification - H NMR spectroscopy - IR spectroscopy - Coating properties of polyurethane resins - Mechanical properties of polyrethane resins Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11625 [article]

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Development of emulsions for optimum dirt pick up resistance and elasticity in exterior emulsion paints / Santanu Roy in PAINTINDIA, Vol. LV, N° 10 (10/2005)

[article]  inPAINTINDIA > Vol. LV, N° 10 (10/2005) . - p. 67-84 Titre : Development of emulsions for optimum dirt pick up resistance and elasticity in exterior emulsion paints Type de document : texte imprimé Auteurs : Santanu Roy, Auteur ; Girish Mehendale, Auteur Année de publication : 2005 Article en page(s) : p. 67-84 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Exterior paints play dual role - decorative as well as protective. Coating with excellent dirt pick up resistance (DPUR) is the desire, and elasticity is the necessity, for masonry surfaces. To accommodate the contradicting properties (DPUR and elasticity) in the same design requires study of novel raw materials and their optimization. In this paper, focus has been to identify suitable glass transition temperature, specialty monomers, chemical and surface crosslinkers for the emulsion desired for such exterior coatings. An emulsion has been successfully developed for a quality exterior paint, which shows good elasticity and optimum dirt pick up resistance. Note de contenu : - EXPERIMENTATION : Emulsion processing - Paint processing - Characterization - RESULTS AND DISCUSSION : Glass transition temperature for desired coating - Specially monomer incorporation - Iso bornyl methacrylate - Iso decyl acrylate - Veova-11 - Ethyl methacrylate - Effect of the crosslinkers - Hexane diol diacrylate (HDODA) - Glycidyl metha acrylate (GMA) - Aceto acetoxyethyl methacrylate (AAEMA) - Effect of the photo initiator - 2,2 dimethoxy-2-phenylacetophenone(DMPA) - Benzophenone derivative (BDP) - Effect of polymerizable surfactant Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11626 [article]

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Azo pigments containing phthalimide units / N. Sekar in PAINTINDIA, Vol. LV, N° 10 (10/2005)

[article]  inPAINTINDIA > Vol. LV, N° 10 (10/2005) . - p. 85-88 Titre : Azo pigments containing phthalimide units Type de document : texte imprimé Auteurs : N. Sekar, Auteur Année de publication : 2005 Article en page(s) : p. 85-88 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Note de contenu : - Pigments containing phthalimide residue - Monoazo pigments with phthalimide residue in the diazo component - Monoazo pigments with phthalimide residue occuring as a ring substituent - Disazo pigments containing phthalimide residue Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11628 [article]

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A guide to graphics ink safety / Denise Breard in PAINTINDIA, Vol. LV, N° 10 (10/2005)

[article]  inPAINTINDIA > Vol. LV, N° 10 (10/2005) . - p. 89-94 Titre : A guide to graphics ink safety Type de document : texte imprimé Auteurs : Denise Breard, Auteur Année de publication : 2005 Article en page(s) : p. 89-94 Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : When it comes to worker health and safety, graphics screen-printing operations face a long list of hazards against which workers must be protected. These hazards run the gamut, from potential repetitive-motion injuries and unsafe equipment operation to lifting dangers and chemical-exposure threats. With all the elements of production that pose obvious risks, it's not surprising that many of us fail to realize menace in one of the essential components of the screen-printing process-the inks that we print. Note de contenu : - How safe are our inks? - Forms of exposure - Ingestion - Skin/eye contact - Inhalation - UV curing - Protecting against ink hazards Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11629 [article]

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