A comparative study of waterborne epoxy-acrylic graft copolymer dispersion based coatings and solvent based coatings for can coating applications / Randhir Parmar in PAINTINDIA, Vol. LIV, N° 3 (03/2004)

[article]  inPAINTINDIA > Vol. LIV, N° 3 (03/2004) . - p. 51-64 Titre : A comparative study of waterborne epoxy-acrylic graft copolymer dispersion based coatings and solvent based coatings for can coating applications Type de document : texte imprimé Auteurs : Randhir Parmar, Auteur ; Ashok Dighe, Auteur ; Niranjan V. Patel, Auteur ; Jayant S. Parmar, Auteur Année de publication : 2004 Article en page(s) : p. 51-64 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Epoxy-Acrylic Graft copolymer Dispersions (EAGDs) were prepared from various grades of Epoxies by grafting Acrylic monomers on it including methacrylic acid to render water compatibility after neutralisation with tertiaryamine. The waterborne can coating compositions were prepared by varying the type ofEAGDs and amount of curing agent, hexamethoxy methyl melamine (HMMM). These compositions were evaluated for their various physico-chemical characteristics and film properties after curing at 200°C for 15 minutes. The conventional Epoxy-phenolic solvent based can coating compositions were also similarly characterised for their performance properties and for the comparison purpose. The study revealed the excellent performance of certain EAGD based waterborne coatings compared to the conventional solvent based can coatings. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12041 [article]

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Synthesis, characterization and optimization of epoxy-acrylic graft copolymer dispersions for waterborne industrial coatings / Randhir J. Parmar in PAINTINDIA, Vol. LIII, N° 12 (12/2003)

[article]  inPAINTINDIA > Vol. LIII, N° 12 (12/2003) . - p. 31-40 Titre : Synthesis, characterization and optimization of epoxy-acrylic graft copolymer dispersions for waterborne industrial coatings Type de document : texte imprimé Auteurs : Randhir J. Parmar, Auteur ; Niranjan V. Patel, Auteur ; Jayant S. Parmar, Auteur Année de publication : 2003 Article en page(s) : p. 31-40 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Volatile organic compounds (VOCs) are a major concern in the environmental pollution by organic solvents used in paint industry. The current trend is towards eco-friendly coatings like water borne coatings. The present work focusses on the method of preparing the Epoxy-Acrylic graft copolymer dispersions. The various experimental sets were prepared by varying the reaction parameters as well as compositions. The EAGDs were then characterized for their physico-chemical characteristics like nonvolatile content, water compatibility, viscosity, particle size, shelf stability as well as the instrumental methods viz. GPC (molecular weight), IR-Spectra and DSC where also employed for the analysis. Thus the optimization was carried out for the EAGDs to be used for the water borne industrial coatings. Note de contenu : - Experimental : - Materials - Preparation of epoxy-acrylic graft copolymer based waterborne dispersions (EAGDs) - Characterization of EAGDs - Result and discussions : - Non-volatile contents (solids) – Compatibility with water – Clarity (visual) – Acid value – Viscosity by Brookfield viscometer – Particle size – Infrared spectral studies – Number (Mn) and weight average (Mw) molecular weight – Thermal analysis by DSC – Shelf life Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12203 [article]

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