Product Introduction
YWU2921J is a two-component aliphatic polyurethane acrylic resin polymer with a molecular weight ranging from 4500 to 6500. It has a low molecular functionality, a small curing shrinkage, excellent adhesion and flexibility, and good weather resistance, acid and alkali resistance, good adhesion, high elongation rate, and exhibits excellent macroscopic properties such as excellent adhesion and resilience, high gloss, excellent color stability, weather resistance and chemical resistance. Due to the presence of main functional groups containing propenoxy double bonds, it can be radiation-cured or chemically cross-linked. The product has a light color and transparency, high adhesion and scratch resistance, high gloss without yellowing; it has a wide range of applications and can be used alone as the main resin for UV pressure-sensitive adhesives, UV adhesives for plastics and metals, PET film, OPP film coating adhesives, screen printing inks, and UV electronic sealants, etc.
Application scope and recommendations:
Plastic topcoat primer, surface paint resin, UV pressure-sensitive adhesive as the main resin, dosage 25-60%
UV adhesive for plastic-metal bonding, bonding of PET, OPP films and other products, dosage 30 -60%
UV spray oil coating for electronics, cosmetics, furniture and cabinets, dosage 10 -25%
Screen printing ink, good adhesion and gloss, dosage 30 -60%
Other polymer adhesion and toughness modifiers, dosage 10 -30%
Typical physical and chemical performance indicators
| Indicator Name |
Testing Standard |
Technical Requirements |
| Appearance |
YW356 |
Light-colored clear and transparent liquid |
| Color(APHA)≤ |
YW8 |
Maximum 50 |
| Viscosity(60℃)CPS |
YW121 |
7000~12000 |
| NCO(%)≤ |
YW101 |
0.06 |
| Polymerization inhibitor content;ppm;≤ |
YW15 |
100 |
| Refractive index |
YW24 |
1.4765 |
| Pencil hardness |
T6739 |
5B |
| Adhesion (100-grid scratch method) |
T5210 |
0 grade(100/100) |
| Resistance to boiling water (100°C, 90 minutes) |
YW101 |
No bubbling or detachment |
Packaging specifications: 20kg per barrel; 200kg per barrel
Shelf life: In a dry and cool environment, 12 months