Improvement of storage stability and physicochemical properties by addition of benzoguanamine in melamine‐formaldehyde resin synthesis

Abstract

The improvement of melamine‐formaldehyde resin storage stability was achieved using benzoguanamine as partial replacement of melamine during synthesis (up to 15% substitution of melamine). The results showed that when benzoguanamine is added in the later stages of reaction, the resulting resins have improved storage stability (4 days or more, compared to 1 day in unmodified melamine‐formaldehyde resin). High‐pressure laminates produced with décor paper impregnated with the new developed resins showed surface properties equivalent to those obtained using commercial melamine‐formaldehyde resins. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45185.

Modified melamine-formaldehyde resins improve tensile strength along with antifouling and flame retardancy in impregnation of cellulose paper

“…Finally, BG was added to the transparent solution and stirred for about 15 minutes. 1,8,10,16 The addition amount of PVA and BG are listed Table 1.…”

“…High-pressure laminates (HPLs), commonly available and used for decoration purposes, are prepared with paper impregnation with thermosetting resins. 1 A variety of resins (epoxy resins, phenolic resins, melamine formaldehyde resins, urea resins, polyurethane prepolymers and unsaturated polyesters, etc.) can be used for impregnating kra cellulose paper and enhancing the properties of the laminates, like dimensional stability, biological and chemical resistance, re resistance, weathering and mechanical properties, etc., 2 but melamine formaldehyde (MF) resin is the commonly-used resin to manufacture HPLs.…”

Flame‐retardant expandable polystyrene foams coated with ethanediol‐modified melamine–formaldehyde resin and microencapsulated ammonium polyphosphate

“…The absorption peaks of COH stretching can be observed at 1087 cm −1 for ethylene glycol. The typical absorption peaks of melamine (NH 2 stretch) and ethylene glycol (COH stretch) cannot be observed in the spectrum of EMF, while a new peak corresponding to the COC stretching vibration can be found at 1038 cm −1 , demonstrating the successful preparation of EMF …”

“…The typical absorption peaks of melamine (ANH 2 stretch) and ethylene glycol (ACAOH stretch) cannot be observed in the spectrum of EMF, while a new peak corresponding to the ACAOACA stretching vibration can be found at 1038 cm 21 , demonstrating the successful preparation of EMF. 22 Some characteristic properties of MF and EMF were also tested, and the results are summarized in Table II. It can be seen that the introduction of ethylene glycol (EG) can significantly increase the storage time from 6 days for MF to 220 days for EMF.…”

Preparation of melamine–formaldehyde resin grafted by (3‐aminopropyl) triethoxysilane for high‐performance hydrophobic materials

“…Because of its commercial importance, numerous investigations focused on the modification of MF resin have been performed in order to improve its physicochemical properties and widen its downstream industrial applications . In order to improving the hydrophobicity and water resistance of MF material, specific chemical additives, such as siloxanes, silanes, fluorine compounds, and nanoparticles, were incorporated into MF formulation by physical doping or chemical grafting.…”