Synthesis of alkyld resins via acylation for high performance industrial coatings / D. V. Gaykar in PAINTINDIA, Vol. LI, N° 7 (07/2001)

[article]  inPAINTINDIA > Vol. LI, N° 7 (07/2001) . - p. 55-60 Titre : Synthesis of alkyld resins via acylation for high performance industrial coatings Type de document : texte imprimé Auteurs : D. V. Gaykar, Auteur Année de publication : 2001 Article en page(s) : p. 55-60 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Alkyde  résine'  'Matériau  revêtement'  Préparation  Polycondensation  Estérification  'Huile  végétale'  ricin''Anhydride  organique'  Cinétique  'Relation  composition  propriété'  'Dureté'  'Résistance  chimique'  Utilisation  'Peinture  émail'  'Etude  expérimentale'  'Propriété  mécanique' Index. décimale : 667.9 Revêtements et enduits Résumé : The study investigates the synthesis of castor oil based alkyds by adopting a novel acylation route. Castor oil was allowed to react with anhydride to yield a secondary half ester, which upon further esterification with polyol and polyacids gave superior quality alkyd resins, which can find large applications in cost effective high performance industrial coatings. The molecular weights of the alkyds prepared by the acylation process, MG process and fatty acid process were recorded. Various anhydrides such as phthalic, tetrahydro phthalic and hexahydro phthalic were compared for the degree of acylation. The mechanical and chemical properties of the white enamel based on the alkyd resin prepared by the acylation technique was compared with that of alkyd resin based on the MG route and the fatty acid route having the same oil length, molecular weight and hydroxyl value. Note de contenu : - Synthesis of castor oil based alkyld by acylation technique - Results : Comparative study of different anhydrides during acylation - The evidence for the formation of secondary halfester - Effect of temperature - Effect of the anhydride used - Effect of catalyst - Effect of oil length Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12619 [article]

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