Table 1.
Properties of MUF resins prepared with different synthesis methods and melamine contents

Resin type	Final F/(U+M) mole ratio	Melamine content (%)	Non-volatile solids content (%)	Gelation time (s)	Viscosity (mPa·s)	pH	Water tolerance (%)
MUF-A	1.0	5	61.6 ± 0.1	204 ± 2	58	9.3	100
		10	61.7 ± 0.1	174 ± 3	65	9.3	80
		20	61.9 ± 0.2	134 ± 2	84	9.3	30
MUF-B	1.0	5	59.7 ± 0.1	197 ± 3	57	8.9	160
		10	60.1 ± 0.1	168 ± 3	64	9.0	100
		20	61.0 ± 0.1	106 ± 2	84	9.3	30