Table 1.
Properties of two types of MUF resins used in this study

Resin type	Melamine content (%)	pH	Viscosity (mPa·.s)	Non-volatile solids content (wt %)	Gel time (s)	Water toluene (%)
MUF-A	5	8.93	91.7	58.36	189	90.0
	10	9.42	100.7	60.11	143	40.7
	20	9.51	170.7	61.53	68	16.4
MUF-B	5	8.92	78.0	58.26	176	105.0
	10	9.06	95.3	59.23	135	72.0
	20	9.28	154.7	62.43	61	26.2