WL-187 Water-based saturated polyester resin
Composition:
WL-187 has excellent hardness and flexibility after cross-linking
with amino resin, and can be widely used in coil and iron printing
industries.
Physical Property
| Appearance | Light yellow liquid | With eyes |
| Solid content | 76±2% | 30min@120℃ |
| Water dilution | Infinite Dilution | ---- |
| Hydroxyl value | 115 mgKOH/g | For solid resin, theoretical value |
| Viscosity (Brookfield 25℃)* | 30-70mpa.s | NDJ-79 Rotational Viscometer |
| Density | 1.142 g/cm3 | Densitym meter |
Viscosity *: after dilution with propylene glycol methylether (1:1)
Application Guide
◆ After WL-187 is neutralized with N, N-dimethylethanolamine( 5~6%
of the resin), it can be directly diluted with water.
◆ Add methylated amino resin (20%-30% of the resin) for baking and
curing. The baking temperature is above 120°C. The baking
conditions and paint film properties are related to the amino resin
used. When it used with the fully methylated amino resin, an acid
catalyst(0.5-1% of the resin) must be added, and the baking
temperature must be above 140°C.
Characteristics
The diluted emulsion of WL-187 has excellent shear stability and
can directly participate in the grinding of color paste. Because
the structural characteristics of the resin help the wetting of
pigments and fillers, no or less wetting agent can be added when
the resin is involved in grinding.
Storage Condition
Store the product in a cool and dry place, the recommended storage
temperature is 0~40℃. The shelf life is one year. After the
expiration date, if the test passed, it still can be used.
.
Special Tips
This material is complied according to our existing technology and
experience, the technical advice provided is sincere, but it is not
guaranteed to be used in all samples and formulations, all the data
are for users reference only.
