Water Based Saturated Polyester Resin
Water-based Saturated Polyester Resin WL-181 Saturated polyester resin WL-181 is a aqueous oil free resin,
through its free hydroxyl and amine crosslinking, the coating
produced has a good film effect on the surface, the coating
produced by WL-181 can be used as primer, topcoat or overcoat
varnish.
Product Features: - High solid content, low odor, low VOC
- Non yellowing
- High hardness (over 4H)
- Excellent solvent and chemical resistance(MEK more than 100times)
- High gloss
- Can use spraying, rolling coating, brushing
- Good adhesion to metal surface
It is recommended for hardware accessories, car wheel drum,
high-grade wood paint and other industrial fields.
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Features:
● After neutralized by amine,it can be infinitely diluted by water
directly.
● High gloss(above 900),high hardness,high fullness,excellent
flexibility,and ageing resistance(QUVA>1000h)
● Excellent shear stability;it can be grinded with dispersions
directly.
● Good pigment and filler wettability;it can be grinded in the
presence of no or little wetting agent
● Applicable to amino baking type and all types of decorative top
coatings.
Technical Index
Appearance:light yellow to light brown transparent viscous liquid
Solid Content:75%(120℃,30min)
Acid Value:25 mg KOH/g
Hydroxyl Value:100-120 mg KOH/g
Properties
WL-181 is a kind of water based saturated polyester resin,and can
be diluted by deionized water infinitely.It is stable under
alkaline condition,so the diluted resin and lacquer shall be stored
under weak alkaline condition.The viscosity of the emulsion will
increase as the pH value increases.
The diluted emulsion has the excellent shear stability,and
therefore can directly be used in pigment paste grinding.After
crosslink with amino,the paint film has excellent hardness and
flexibility,high gloss,and high fullness,and therefore can be used
for highly decorative top coatings,such as all kinds of hardness
metal surfaces or wood surfaces.
Instructions:
The etherfied water based amino is recommend for crosslinking.The
consumption is 35-40%of the resin consumption,and the baking
temperature is above 130℃.
Paint film property
WL-181 paint film property
| Film thickness(μm) | 25 | |
| Gloss(600) | >90 | GB/T1743-79 |
| Adhesion(Cross-cut tape test) | ≤Grade 1 | GB/T1720-79 |
| Flexibility(Grade) | 1 | GB/T1731-93 |
| Impact resistance(kg,cm) | 50 | GB/1732-93 |
| Hardness | 3H | Pencil hardness |
| Resistance to butanone rub | >100times | |
| Baking condition | 130℃/20min | |
