... reduce water or solvent systems coating&painting’s surface tension, improve the wettability between the painting and ... and make the painting migrate to leather’s surface quickly , 2, effectively improve the painting’ levelling ... smooth and delimit-resistance of the leather’s surface, improve the product’s glossiness and hand-feeling ... C, g/ cm3) 1.01~1.024). Surface tension(25°C,mN/m) 20.5~21.05).active ...