SU-315V is a less-yellowing type blocked isocyanate which blocking agent dissociates at low temperature. It can be used in combination with water-based chemicals and resins to improve various properties such as rubbing fastness, water resistance, solvent resistance, and washing durability.
| Appearance | Light yellowish – yellowish liquid |
|---|---|
| Component | blocked isocyanate and glycol ether solution |
| Ionicity | Nonionic |
| pH | Weak alkaline (10% aqueous solution) |
| Solubility | Dilute by water at any ratio |
Test method
1)Mix water-soluble resin and SU-315V and dry.
2)Heat treatment for 30 minutes at the specific temperature.
3)Dip the heat-treated film in acetone /methanol = 1/1 (wt) and collect insoluble matter.
4)Calculate the insoluble rate of the coating from the weight of insoluble matter.
SU-315V changes the solubility aqueous resin.
| Recipe | Solid content | Part by weight |
|---|---|---|
| Pigment paste (Including acrylic binder) |
8% | 80.8 |
| SU-315V | 55% | 1.8 |
| Water | - | 17.4 |
Dry ：100℃ × 2min
Cure ：Specific condition
Evaluation method ：JIS L 0849-2003 Type Ⅱ
SU-315V improves rubbing fastness.
| Recipe | 1 | 2 | 3 | |
|---|---|---|---|---|
| agent | Solid content | |||
| Fluorinated water repellent agent | 20% | 5 | 5 | 5 |
| SU-315V | 55% | 0.5 | ||
| Conventional cross-linking agent | 30% | 1.0 | ||
Dry ：110℃ × 90sec
Cure ：110℃ × 60sec
Water repellency ： JIS L 1092-2009.7.2 spray method
Home laundry (HL) ： JIS L 1092-2009.6.2.1 C
SU-315V imparts sufficient washing durability even low curing temperature conditions.
