OH H N OH C H 15 27 COOH H N COOH OH C H 15 27 C H 15 27 H N C H 15 27 H CH Electronic supplementary material The online version of this Keywords Cardanol, Benzoxazines, Curing kinetics, article (https://doi.org/10.1007/s11998-017-0020-9) contains sup- Kissinger, Ozawa–Flynn–Wall plementary material, which is available to authorized users. K. Wazarkar, A. Sabnis (&) Department of Polymer and Surface Engineering, Institute of Chemical Technology, Matunga, Mumbai 400019, India e-mail: email@example.com 555 J. Coat. Technol. Res., 15 (3) 555–569, 2018 Introduction Materials Polybenzoxazines are a new class of thermosetting Cardanol (NC-700) was received from Cardolite Spe- polymers developed by high-temperature ring-opening ciality Chemicals Ltd., Mangalore, India. All analyti- self-polymerization of benzoxazine monomers. Benzox- cal-grade chemicals including formaldehyde (35 wt%), azines are heterocyclic compounds with one or two aniline, 4-aminophenol and 4-aminobenzoic acid, tetra- oxazine rings in their molecules. In general, a phenolic butyl ammonium bromide (TBAB), sodium hydroxide, compound, primary amine, and formaldehyde when sodium sulfate, and ethyl acetate were purchased from reacted together in a speciﬁc molar ratio yield benzox- SD Fine Chemicals, Mumbai, India, and were used as azines through Mannich reaction. Benzoxazine curing received without further puriﬁcation. process does not
Journal of Coatings Technology and Research – Springer Journals
Published: Feb 9, 2018
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