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Modified Karanja (Pongamia pinnata) oil based curing of acid functional acrylic copolymer resin for anticorrosive coating / D. A. Raval in PAINTINDIA, Vol. LV, N° 3 (03/2005)
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Titre : Modified Karanja (Pongamia pinnata) oil based curing of acid functional acrylic copolymer resin for anticorrosive coating Type de document : texte imprimé Auteurs : D. A. Raval, Auteur ; Vismay M. Patel, Auteur Année de publication : 2005 Article en page(s) : p. 51-58 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.6 Peintures Résumé : Karanja oil (Pongamia pinnata) is available in large quantity and used as a raw material for soap, and after its sulfonation and sulfation in the leather tanning industry in India. Oil from P. pinnata was extracted and characterized. It was first converted into N,N-bis(2-hydroxyethyl) Karanja fatty amide (HEKFA). HEKFA has been synthesized by reaction between Karanja oil and diethanol amine in presence of zinc oxide as a catalyst. The reaction is relatively rapid and proceeded to high yield at 200 ° ′ 5° C. The resulting HEKFA was used to formulate thermosetting coating compositions. Films were cured at ambient (air drying) and elevated (stove drying) temperatures using N,N-bis (2-hydroxyethyl) Karanja fatty amide (HEKFA) as eco-friendly crosslinking agent for acrylic resin. The coating performance of the various compositions was tested by measurement of scratch hardness, impact strength and chemical resistance. The results show better performance of the HEKFA based compositions compared to butylated melamine formaldehyde (MF) based compositions. Note de contenu : - Materials
- Synthesis of N,N-bis(2-hydroxyethyl) Karanja fatty amide (HEKFA) and carboxylic acid functional acrylic resin (AAR)
- Coating compositions
- Preparation of coating compositions of AAR and HEFKA
- Spectral analysis of HEFKA and AAR
- Film properties
- Chemical and solvent resistance properties
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