Table 1.
Properties of two types of MUF resins synthesized with three melamine contents

Resin type	Resin type Melamine content (%)	pH	Viscosity (mPa•s)	Non-volatile solids content (wt %)	Gelation time (s)	Water-tolerance (%)
MUF-A	5	9.4	58	61.6±0.1	204±2	100
	10	9.1	65	61.7±0.1	174±3	80
	20	9.3	84	61.9±0.2	134±2	30
MUF-B	5	8.8	57	59.3±0.2	197±3	160
	10	8.9	64	61.2±0.1	168±3	100
	20	8.9	84	62.4±0.1	106±2	30