Hydroxyl Acrylic Resin for PU finishing varnish SE6628
SE 6628 is an hydroxyl functional acrylic resin that, when combined
with appropriate aliphatic polyisocyanates, provides excellent
durability and outstanding gloss retention. It should be used in
solid color paints and clearcoats for vehicle refinishing and in
industrial topcoats. Se 6628 is used in combination with aliphatic
isocyanates it exhibits good exterior durability, good build and
gloss, high end hardness and good adhesion results on metallic base
coats.
1. Features
Good adhesion to substrates of ABS, PS, hardware, fast drying,
excellent compatibility, superior silver powder distribution
orientation
2. Applications
PU plastics, hardware silver powder paint, colored paint,
disposable spraying on ABS and PS
3. Properties
| Component | Appearance | Fe-Co Color | Viscosity Pa.s/25℃ | Non-volatile % | Acid value mgKOH/g | Solvent | Hydroxyl value |
| Acrylic copolymer | Clear | ≤1 | 3.5-7 | 60±2 | 2-6 | XYL/BAC/PMA | 30 |
4. Compatibility and solubility
| XYL | + | BCS | + |
| TYL | + | CAC | + |
| BAC | + | IBA | + |
| CYC | + | NBA | + |
Remark:+ show soluble in/compatible in
5. Reference formula
| Two component aluminum powder paint | Diluent |
| (A component)) |
| SE6628 | 70 | XYL | 50 |
| ZX1065 | 10 | TOL | 10 |
| BYK-306 | 0.2 | BAC | 15 |
| EFKA2018 | 0.1 | CAC | 15 |
| 20% CAB-381-2 | 10 | MIBK | 10 |
| BAC | 9.7 | | |
| (B component) Bayer N3390 | | | |
A component: B component: diluent=100: 18.6: 80~100
6. Process conditions
▲ Baking condition: (1) 65℃ x 60min, corrosion resistance index was
measured after 24h
(2) Air drying
▲ Substrate: ABS/tin
7. Test technical index
| Test Item | Test Method | Reference Standard | Test Standard | Test Result (reference value) |
| Surface drying | Blow cotton ball method | ------ | Not stick cotton ball | 5min |
| Hard drying | Finger pressing method | ------ | No finger print | 6h |
| 8h hardness | Pencil scratch | GB/T6739-96 | ----- | <HB |
| 24h hardness | Pencil scratch | GB/T6739-96 | ----- | HB |
| Gloss | 60 degree | GB/T9754-88 | ≥85 | 88 |
| Hardness | Pencil scratch | GB/T6739-96 | ≥HB | 2H |
| Adhesion | The case method | GB/T9286-98 | 100% | 100% |
| silver distribution orientation | Scraper method | ------- | Silver powder has high whiteness, uniform gloss | excellent |
| Levelling property | Visual method | ------ | Flat and smooth, no shrinkage hole | Qualified |
| Acid resistance | Soak method | GB/T9274-88 | 10%H2SO4 48h not bubbling, not falling off, no color change | Qualified |
| Alkali resistance | Soak method | GB/T9274-88 | 5%NaOH 24h not bubbling, not falling off, no color change | Qualified |
| Alcohol resistance | Wiping method | ----- | No exposing base for 60 times(500g) | 85 times (13um) |
8. Safe storage and shelf life
1. Stored in cool and ventilation place, keep far away from heat
and fire resources, keep the container closed.
2. From production date, shelf life is 12months.
9. Packing specifications
200kg/pail (new metal pail)
10. Safety
This product contains solvent, must do safeguard procedure, handle
carefully, avoid contact with the skins and eyes, for other
details, please refer to MSDS of this product.
