A highly regioselective acylation of myo-inositol 1,3,5-orthoformate at the 4-O/6-O positions is catalyzed by various metal trifluoromethanesulfonates, giving excellent yields; an asymmetric example using (-)-camphanic anhydride is described here.

Esterified kraft lignins (KL) were prepared by reaction with maleic anhydride (MA), succinic anhydride (SA), and phthalic anhydride (PA) in acetone solutions. The esterified lignins were characterized using ATRFTIR, solid state CP-MAS 13C NMR spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). PA modification resulted in the highest weight gain percent (...

As an alternative to inorganic fillers based composites which present high density, epoxy thermosetting (TS) phase was in situ created a polypropylene (PP) matrix and compatibilized by grafted maleic anhydride (PP-g-MA). The aim of this study is scrutinize the chemistry establish relation between morphology, mechanical properties, crystalline structure thermosetting/thermoplastic system. Depend...

A new type of naphthalene-1,8-dicarb-oxy-lic anhydride, C(12)H(6)O(3), was synthesized hydro-thermally. Unlike the two previously reported polymorphs, which crystallize in the ortho-rhom-bic space groups P2(1)2(1)2(1) [Shok et al. (1971). Kristallografiya, 16, 500-502; Grigor'eva & Chetkina (1975). Kristallografiya, 20, 1289-1290] and Pbca [Shok & Gol'der (1970). Zh. Strukt. Khim.11, 939-940], ...

A solvent-free Diels-Alder reaction was carried out by heating a mixture of graphite and a typical dienophile, maleic anhydride (MA) or maleimide (MI), in a sealed glass ampoule of argon. The functionalization of graphite with dienophiles was confirmed by various characterization techniques, suggesting the efficient functionalization and delamination of graphite into a few layers of graphitic n...

In recent years, much effort has been invested into developing multifunctional drug delivery systems to overcome the drawbacks of conventional carriers. Magnetic nanoparticles are not generally used as carriers but can be functionalised with several different biomolecules and their size tailored present a hyperthermia response, allowing for design which active in therapies. this work, we have d...

Water-soluble metal working fluids are used for processing of aluminum alloy materials. This short article describes properties of new additives in water-soluble metal working fluids for aluminum alloy materials. Many half esters or diesters were prepared from the reactions of higher alcohols with acid anhydrides. Interestingly, diesters of PTMG (tetrahydrofuran oligomer, MW = 650 and 1000) and...

Union Carbide Witco Chemical Aerosol 22 Aerosol A-102 Aerosol 18 Aerosol OS Cyanamer P-35 Ethofat 242/25 Ethofat C/15 Ethomid HT/60 Ethomeen 18/60 Merpol DA Zelec DX Duponol ST Merpol F Alkanol S Flakes Duponol WA Dry Duponol WA Paste Duponol WAQ Duponol ME Dry FC-134 FC-170 FC-172 LSD-2 LSD-6 Dequest 2000 Dequest 2006 EMA Grade 11 EMA Grade 61 ID-2721 Lomar PW Nopcosant L Tamol SN Tamol 731-25...

Abstract This article presents the potential use of tree waste materials such as leaves (L), branches (B) and trunks (T) Azadirachta excelsa (Sentang) in production wood polymer composite (WPC). The WPC was fabricated from high-density polyethylene (HDPE) bonding matrix, maleic anhydride (MA) coupling agent, Sentang particles (L, B T) filler, prepared using twin-screw extruder followed by injec...