SK saturated polyester resin

SKYBON EW-312 saturated polyester resin

performance

parameter	unit	Numerical value
Exterior	--	transparent particles
molecular weight	--	15,000
Viscosity	Dl/g	0.45
glass transition temperature	℃	60
Softening point (℃)	℃	160
Acid value	KOH mg/g	3~5
Hydroxyl value	KOH mg/g	5~10

application
Water-based paper coating, varnish (OPV)
water-based ink adhesive
water-based adhesive

Features
Good waterproof performance, pulp recyclability
Excellent adhesion
Good heat resistance and durability
FDA Certified (CFR 175.300 and 177.1630)

Dissolution method EW312 25~30%
Ethylene glycol monobutyl ether 8~10%
Pure water 60~67%
Put pure water and ethanol monobutyl ether or DPM (dipropylene glycol monomethyl ether) in the reactor; while stirring, put EW-312.
Dissolution temperature: 80~90℃
Dissolution time: 3~5 Hours
Solution viscosity: ~200 Cps

Properties of Varnish Made with EW-312

parameter	Numerical value	Remark
Film thickness	1.5-2.5um
water permeability	400-600g/m².day
Gloss, 60°	75-85
Anti-scratch (sec)	600at2um 1200at10um	ASTM D722
Water resistance (sec)	300+	water drop test