The effect of methyl and methoxy substituents on dianilines for a thermosetting polyimide system
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DOI: 10.1177/0954008319899141
Abstract: 4,4′-Methylenedianiline (MDA) is widely used in high-temperature polyimide resins, including polymerization of monomer reactants-15. The toxicity of MDA significantly limits the manufacturability using this resin. Modifying the substitution and electronics of MDA could allow for… read more here.
Keywords: mda; methyl methoxy; polyimide; methoxy substituents ... See more keywords
Kavalactones and Benzoic Acid Derivatives from Leaves of Piper fuligineum Kunth (Piperaceae)
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DOI: 10.21577/0103-5053.20170225
Abstract: The known kavalactones (E)-4-methoxy-6-styryl-2H-pyran-2-one, 4-methoxy6-(3-phenyloxiran-2-yl)-2H-pyran-2-one, 6-(1,2-dihydroxy-2-phenylethyl)-4-methoxy-2H-pyran2-one, the three benzoic acid derivatives methyl-4-methoxy-3-(3’-methyl-2’-butenyl)benzoate and methyl 2,2-dimethyl-4-oxochroman-6-carboxylate, and a new methyl 4-methoxy-3-(3-methylbut2-enoyl)benzoate were isolated from the ethanolic extract of Piper fuligineum. The structures of these compounds were… read more here.
Keywords: piper fuligineum; methyl methoxy; fuligineum; benzoic acid ... See more keywords