Methylolation of Melamine with Incipient Condensation I. Synthesis and Characterization

V. NICOLAU; M MARTINELLI; M. STRUMIA; D. ESTENOZ; G.R.MEIRA

JOHN WILEY & SONS INC

Año: 2009 vol. 113 p. 1030 - 1030

p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: justify; mso-layout-grid-align: none">This work investigates five reactions between melamine (M) and formaldehyde (F) at pH ¼ 9.0, and with initial F : M ratios of 2. The samples were analyzed by size exclusion chromatography (SEC), volumetric techniques, and (1H and 13C) NMR. Condensation was quantified by the SEC measurements. In the experiments at 38 and 48