Electrodepositive coating compositions from water soluble epoxy polymers / M. C. Shukla in PAINTINDIA, Vol. XLIX, N° 9 (09/1999)

[article]  inPAINTINDIA > Vol. XLIX, N° 9 (09/1999) . - p. 37-48 Titre : Electrodepositive coating compositions from water soluble epoxy polymers Type de document : texte imprimé Auteurs : M. C. Shukla, Auteur Année de publication : 1999 Article en page(s) : p. 37-48 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Matériau  revêtement'  'Peinture  eau'  Formulation  Liant  'Epoxyde  résine'  'Solution  aqueuse'  Peinturage  'Dépôt  électrophorèse' Index. décimale : 667.9 Revêtements et enduits Résumé : The acute shortage coupled with tremendous increase in cost of various solvents used by paint industry and pollution becoming serious concern has resulted in intensive study of water based coatings. The chemical modification of liquid epoxy polymer with bisphenol-A was carried out. The water soluble epoxy polymers were made from phthalic anhydride, phthalic-anhydride and trimellitic anhydride, phthalic anhydride and maleopimaric acid and maleopimaric acid alone, separately by using chemical modified epoxy polymer prepared earlier. The pigmentation of water soluble epoxy polymer based on phthalic anhydride, phthalic anhydride and trimellitic anhydride, phthalic anhydride and maleopimaric acid, -and maleopimaric acid alone was done using red oxide and zinc phosphate. The methylated melamine formaldehyde polymer was prepared and used as curing agent. Thereafter, electrodepositable pigmented coating compositions were prepared and they were studied for different mechanical and chemical film properties after electrodeposition. It may be used in surface coatings where good mechanical and chemical properties are required. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13057 [article]

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Maleopiramic acid based water soluble stoving coating compositions / M. C. Shukla in PAINTINDIA, Vol. XLVI, N° 12 (12/1996)

[article]  inPAINTINDIA > Vol. XLVI, N° 12 (12/1996) . - p. 27-30 Titre : Maleopiramic acid based water soluble stoving coating compositions Type de document : texte imprimé Auteurs : M. C. Shukla, Auteur ; S. Kulshreshtha, Auteur ; A. K. Vasishtha, Auteur Année de publication : 1996 Article en page(s) : p. 27-30 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Peinture  eau'  Liant  'Alkyde  résine'  Préparation  Diterpène  'Anhydride  organique'  Formulation  'Propriété  chimique'  mécanique'  Feuil  'Etude  expérimentale'  'Maléopimarique  acide' Index. décimale : 667.9 Revêtements et enduits Résumé : Water soluble alkyd was prepared from linseed oil, glycerol, maleopimaric acid and phthalic anhydride combination by monoglyceride process. For comparison purpose, two other water soluble alkyds were also prepared from trimellitic anhydride and phthalic anhydride combination, and phthalic anhydride alone, separately. Water soluble pigmented coating compositions were prepared from these watersoluble alkyds using water soluble methylated melamine formaldehyde resin as curing agent and TiO2 as pigment. The coating compositions were cured by heating at 160°C for 30 minutes. The film properties of all three pigmented coatings were determined and compared. It was observed that the overall mechanical and chemical properties of the films of coating based on water soluble alkyd made from maleopimaric acid and phthalic anhydride combination were superior over the films of coatings based on trimellitic anhydride and phthalic anhydride combinations, and phthalic anhydride alone. The films of coating based on phthalic anhydride alone gave comparatively poor mechanical and chemical film characteristics. Note de contenu : - Experimental : - Materials - Preparation of water soluble alkyds from maleopimaric acid and phthalic anhydride - Preparation of water soluble alkyd from trimellitic anhydride and phthalic anhydride - Preparation of water soluble methylated melamine formaldehyde resin - Preparation of water soluble pigmented coating compositions - Characterisation of water soluble alkyds - Evaluation of film performance of coatings - Results and discussion : - Scratch hardness - Flexibility - Water resistance - Acid resistance - Alkall resistance - Solvent resistance Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13518 [article]

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Pigmented coating compositions from water soluble epoxy polymers / Sumeet Trehan in PAINTINDIA, Vol. XLVIII, N° 7 (07/1998)

[article]  inPAINTINDIA > Vol. XLVIII, N° 7 (07/1998) . - p. 81-88 Titre : Pigmented coating compositions from water soluble epoxy polymers Type de document : texte imprimé Auteurs : Sumeet Trehan, Auteur ; M. C. Shukla, Auteur Année de publication : 1998 Article en page(s) : p. 81-88 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Peinture  eau'  Formulation  'Solution  aqueuse'  Liant  'Epoxyde  résine'  'Bisphénol  A'  'Benzo[c]furane-1,3-dione(1,3-dihydro)'  'Maléopimarique  acide'  'Trimellitique  anhydride'  'Modification  chimique'  'Mélamine  '  Matériau  revêtement'  'Anhydride  organique' Index. décimale : 667.9 Revêtements et enduits Résumé : The chemical modified epoxy polymer was synthesised from liquid epoxy resin and bisphenol-A. Thereafter water soluble epoxy polymers were synthesised from phthalic anhydride alone, phthalic anhydride and trimellitic anhydride, phthalic anhydride and maleopimaric acid and maleopimaric acid alone. The methylated melamine formaldehyde polymer was synthesised and was used as curing agent. The film properties of the pigmented coating compositions were studied in detail. Note de contenu : - Experimental : Materials - Results and discussion Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13139 [article]

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Water soluble cathodic electrodepositable coating compositions / S. Singh in PAINTINDIA, Vol. LII, N° 1 (01/2002)

[article]  inPAINTINDIA > Vol. LII, N° 1 (01/2002) . - p. 35-40 Titre : Water soluble cathodic electrodepositable coating compositions Type de document : texte imprimé Auteurs : S. Singh, Auteur ; P. K. Kamani, Auteur ; M. C. Shukla, Auteur Année de publication : 2002 Article en page(s) : p. 35-40 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Esterified epoxy-amine adducts with linseed fatty acids were prepared by reacting epoxy-amine-adduct and linseed fatty acids in different proportions. The used epoxy-amine adduct was synthesized from epoxy resin and diethanol amine in molar ratio 1:1. The pigmented coating compositions for cathodic electrodeposition were prepared by using different esterified epoxy-amine adducts with linseed fatty acids, separately. Film properties of cathodic electrodeposited coating compositions were studied and it was found that the coating compositions having 10% and 15% esterified epoxy- amine adducts showed good film properties. Note de contenu : - EXPERIMENTAL : Preparation of epoxy-amine adduct using epoxy and amine in molar ratio 1:1 - Esterification of epoxy-amine adduct with linseed oil fatty acids - Preparation of pigmented coating compositions - Cathodic electrodeposition - Evaluation of film properties of cathodic electrodepositable pigmented coating compositions - RESULT AND DISCUSSION : Scratch hardness - Flexibility and adhesion - Impact resistance - Water resistance - Acid resistance - Alkali reistance - Solvent resistance - Corrosion resistance - Salt spray resistance Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12252 [article]

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Water soluble stoving coating compositions from maleopimaric acid modified epoxy resins / U. S. Mishra in PAINTINDIA, Vol. XLVII, N° 10 (10/1997)

[article]  inPAINTINDIA > Vol. XLVII, N° 10 (10/1997) . - p. 43-48 Titre : Water soluble stoving coating compositions from maleopimaric acid modified epoxy resins Type de document : texte imprimé Auteurs : U. S. Mishra, Auteur ; M. C. Shukla, Auteur Année de publication : 1997 Article en page(s) : p. 43-48 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de titane Epoxydes Liants Maléopimarique, Acide Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : This paper deals with the synthesis of water soluble epoxy resins by using maleopimaric acid as a tricarboxylic acid. Water soluble epoxy resins were synthesised from epoxy resin and maleopimaric acid using different weight ratio. There after, pigmented coating compositions were prepared using water soluble epoxy resins and titanium dioxide as pigment. These coating compositions were characterised and evaluated for mechanical and chemical film properties. The results show that all the coating compositions had good film properties and they may be used as industrial coatings. Note de contenu : - Preparation of water soluble maleinised dehydrated castor oil - Preparation of water soluble epoxy resins - Preparation of methylated urea formaldehyde (UF) resin - Preparation of methylated melamine formaldehyde (MF) resin - Preparation of water soluble pigmented coating compositions - Characterisation of water soluble epoxy resins - Characterisation and evaluation of film properties of water soluble pigmented coating compositions - RESULTS AND DISCUSSION : Scratch hardness - Flexibility - Gloss - impact resistance - Corrosion resistance - Water resistance - Acid resistance - Alkali resistance - Xylene resistance - Butanol resistance - lubricating oil resistance Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13343 [article]

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