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Coil coating based on high molecular weight polyester / L. T. Gangotri in PAINTINDIA, Vol. LVII, N° 9 (09/2007)

[article]  inPAINTINDIA > Vol. LVII, N° 9 (09/2007) . - p. 77-84 Titre : Coil coating based on high molecular weight polyester Type de document : texte imprimé Auteurs : L. T. Gangotri, Auteur ; Ganesh Kulkarni, Auteur Année de publication : 2007 Article en page(s) : p. 77-84 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Hydroxyl terminated straight chain polyester resins of high molecular weight ranging from 3000 to 10000, were prepared and evaluated. The coil coating compositions based on these polyester resins were found to have excellent flexibility (OT bend test), scratch hardness (6H) and excellent water, salt water, acid, alkali, solvent and corrosion resistance. The polyester resin of 10000 molecular weight was found to give best results. The curing time of one minute was achieved at stoving temperature of 250°C with 0.4% melamine as curing agent. Note de contenu : - Vehicles for coil coatings - Polyesters resin in coil coatings - Aims of present investigation - Experimental Preparation of polyester resin Evaluation of polyester resin Composition & evaluation of polyester varnish - Stoving paint Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11504 [article]

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Cement paints : truly green / E. Padmanabhan in PAINTINDIA, Vol. LVII, N° 9 (09/2007)

[article]  inPAINTINDIA > Vol. LVII, N° 9 (09/2007) . - p. 85-89 Titre : Cement paints : truly green Type de document : texte imprimé Auteurs : E. Padmanabhan, Auteur Année de publication : 2007 Article en page(s) : p. 85-89 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Note de contenu : - Common misconceptions 1) Hydraulic binder 2) Alkalinity 3) Mixed paint 4) Curing 5) Efflorescence - Failure of concrete - Composition - Portland cements - Hydrated line Polymeric binders - Accelerators - Hydrophobing agents - Cellulose ethers - Preservation Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11505 [article]

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Use of fortified urea formaldehyde adhesives in moisture resistance grade plywood / Smita Mathur in PAINTINDIA, Vol. LVII, N° 9 (09/2007)

[article]  inPAINTINDIA > Vol. LVII, N° 9 (09/2007) . - p. 97-105 Titre : Use of fortified urea formaldehyde adhesives in moisture resistance grade plywood Type de document : texte imprimé Auteurs : Smita Mathur, Auteur ; Pradeep Sharma, Auteur ; K. S. Shukla, Auteur ; P. L. Soni, Auteur Année de publication : 2007 Article en page(s) : p. 97-105 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Resins were prepared by fortifying urea formaldehyde with tannins of Uncaria gambier and Acacia catechu separately upto 30% at room temperature. Adhesive formulations and gluing conditions were examined by preparing laboratory 3-ply sal boards (53.34cm x 53.34cm). In order to study the effect of fortification of Urea formaldehyde with both the tannins, the gluing results obtained were analyzed and it was revealed that the glue shear strength of the plywood cannot only meet the requirements of the Indian Standards IS: 303-1989, for moisture resistance grade plywood, but also better than control. Hence both the tannins would be desirable fortifiers for urea formaldehyde resin as reducing the cost of the glue without affecting the bond quality of Moisture Resistance (MR) grade plywood. Note de contenu : Experimental : Preparation of urea-formaldehyde (UF) resin Basic adhesive formulation and gluing conditions Basic gluing conditions - Results and discussion : Urea-tannin-formaldehyde (UTF) resins - Glue shear strength - Statistical analysis Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11506 [article]

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Preparation and characterization of cardanol based novolacs for use in surface coatings / Raju in PAINTINDIA, Vol. LVII, N° 9 (09/2007)

[article]  inPAINTINDIA > Vol. LVII, N° 9 (09/2007) . - p. 107-119 Titre : Preparation and characterization of cardanol based novolacs for use in surface coatings Type de document : texte imprimé Auteurs : Raju, Auteur ; Ganesh Datt Bajpai, Auteur ; Pramod Kumar, Auteur Année de publication : 2007 Article en page(s) : p. 107-119 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Novolacs  Cardanol  Characterisation  'Cashew  nut  shell  liquid  (CNSL)' Index. décimale : 667.9 Revêtements et enduits Résumé : The novolac resins were prepared by reacting cardanol with formaldehyde. The molar ratios taken with respect to cardanol to formaldehyde were 1:0.6, 1:0.7, 1:0.8 and 1:0.9. These resins were characterized by I.R. spectroscopy for determining respective functional groups in the resin structure, and Gel Permeation Chromatography (GPC) was used to determine the molecular weights of the prepared novolac resins. These resins were found to possess ortho-ortho and ortho-para linkages. The curing characteristics of the resins showed that the resin prepared with molar ratio 1:0.8 has good curing characteristics. Note de contenu : - Experimental : Materials - Analysis of cardanol - Synthesis of cardanol-formaldehyde novolac resins - Coating of panels - Evaluation of physical properties of films - Evaluation of cheminical resistance properties of films - Results and discussion : Analysis of cardanol - Molecular weight determination of cardanol-formaldehyde resins - I.R. spectral analysis of cardanol-formaldehyde resins - Evaluation of coating films for their curing characteristics - Characterization of cured films of (CNs) for film properties Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11507 [article]

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