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Synthesis and characterization of polyol poly-12-hydroxy stearic acid / Yonglei Wang in Industrial & engineering chemistry research, Vol. 48 N° 8 (Avril 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 3749–3754 Titre : Synthesis and characterization of polyol poly-12-hydroxy stearic acid : applications in preparing environmentally friendly overbased calcium oleate detergent Type de document : texte imprimé Auteurs : Yonglei Wang, Auteur ; Wumanjiang Eli, Auteur ; Ayixiamuguli Nueraimaiti, Auteur Année de publication : 2009 Article en page(s) : pp. 3749–3754 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Poly-12-hydroxy  stearic  acid  Esterification  Polyol  polymeric  hyperdispersant  FT-IR  analysis Résumé : In this study, the poly-12-hydroxy stearic acid (PTHSA) was synthesized and then modified by esterification with pentaerythritol to obtain a polyol polymeric hyperdispersant (polyol-PTHSA). Under suitable reaction conditions (molar ratio pentaerythritol/PTHSA, 1.2:1; reaction temperature, 453 K; and reaction time, 4−8 h), the polyol-PTHSA with acid value of 3 mg of KOH/g can be obtained. The structures were confirmed by FT-IR analysis. The polyol-PTHSA was subsequently used as a hyperdispersant in the process of preparing environmentally friendly overbased calcium oleate detergent to increase the total base number of the product. Reaction conditions including the polymerization catalyst, the catalyst amount, the amount of xylene, the polymerization temperature, the polymerization time, the polyol-PTHSA amount, and the acid value of the PTHSA were optimized. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8016016 [article] Synthesis and characterization of polyol poly-12-hydroxy stearic acid : applications in preparing environmentally friendly overbased calcium oleate detergent [texte imprimé] / Yonglei Wang, Auteur ; Wumanjiang Eli, Auteur ; Ayixiamuguli Nueraimaiti, Auteur . - 2009 . - pp. 3749–3754. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 3749–3754 Mots-clés : Poly-12-hydroxy  stearic  acid  Esterification  Polyol  polymeric  hyperdispersant  FT-IR  analysis Résumé : In this study, the poly-12-hydroxy stearic acid (PTHSA) was synthesized and then modified by esterification with pentaerythritol to obtain a polyol polymeric hyperdispersant (polyol-PTHSA). Under suitable reaction conditions (molar ratio pentaerythritol/PTHSA, 1.2:1; reaction temperature, 453 K; and reaction time, 4−8 h), the polyol-PTHSA with acid value of 3 mg of KOH/g can be obtained. The structures were confirmed by FT-IR analysis. The polyol-PTHSA was subsequently used as a hyperdispersant in the process of preparing environmentally friendly overbased calcium oleate detergent to increase the total base number of the product. Reaction conditions including the polymerization catalyst, the catalyst amount, the amount of xylene, the polymerization temperature, the polymerization time, the polyol-PTHSA amount, and the acid value of the PTHSA were optimized. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8016016