3888-22-0Relevant articles and documents
Replacing bisphenol-A with bisguaiacol-F to synthesize polybenzoxazines for a pollution-free environment
Periyasamy, Thirukumaran,Asrafali, Shakila Parveen,Muthusamy, Sarojadevi,Kim, Seong-Cheol
, p. 9313 - 9319 (2016)
In recent years, bisguaiacol F (BGF) is considered as a green alternative to bisphenol A (BPA). The present work deals with the synthesis of BGF and BGF-based benzoxazines, viz., bis[(3-(furan-2-yl) methyl)-3,4-dihydro-2H benzoxazin-6-yl]methane and bis[(3-octadecyl)-3,4-dihydro-2H benzoxazin-6-yl]methane, as an alternative to BPA and polybenzoxazines derived from BPA. A solventless method was adopted for the synthesis of BGF and the benzoxazine monomers. The structure and purity of BGF is confirmed by FT-IR, NMR (1H and 13C), MS and GC. The monomers were polymerized via ring opening polymerization by heating as shown by FT-IR (disappearance of the peak due to the oxazine ring at 933 cm-1). Differential scanning calorimetric (DSC) analysis of the monomers shows a wide range of processability between 77 and 122 °C. Thermal properties of the furfurylamine based polybenzoxazine (BGF-FPbz) and stearylamine based polybenzoxazine (BGF-SPbz) were investigated by thermogravimetric analysis (TGA). The results indicate that BGF-FPbz shows the maximum thermal stability when compared with BGF-SPbz. Both the polymers exhibit good flame retardant properties as shown by their LOI values (more than 26).
BISPHENOL ALTERNATIVE DERIVED FROM RENEWABLE SUBSTITUTED PHENOLICS AND THEIR INDUSTRIAL APPLICATION
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Paragraph 0044; 0061, (2017/08/22)
A compound is provided according to structure 4, (4) wherein n has a value from 0 to 48 and Z is hydroxyl or a benzene ring bearing substituents R11-R15, wherein R1-R15 are each individually selected from the gr
Anti-inflammatory properties of quebecol and its derivatives
Cardinal, Sébastien,Azelmat, Jabrane,Grenier, Daniel,Voyer, Normand
, p. 440 - 444 (2016/01/09)
Herein we report our results on the anti-inflammatory activity of quebecol, a polyphenolic compound discovered in maple syrup. Bioassays demonstrated that quebecol has an anti-inflammatory effect on LPS-induced NF-κB activation and inhibits the secretion of two pro-inflammatory cytokines, IL-6 and TNF-α. We also prepared and tested precursors of quebecol and its derivatives corresponding to its substructures of interest, with the aim to study the structure-activity relationships. Comparing the results obtained for all tested compounds allowed the identification of the main moiety responsible for the anti-inflammatory activity of quebecol.