UV-shielding agent
ULS-700/ULS-1700
UV-shielding agent for use in post-processing |
The special feature of Ipposha Oil Industries' two UV-shielding agents, ULS-700 and ULS-1700, is the ability to withstand 30 launderings. Production of soft hand is another.
The benzophenone type ULS-700 is widely used in conventional UV-shielding finishing, while ULS-1700, a benzotriazole type with superior UV-shielding properties, targets specialized areas.
A UPF value of at least 30 is required in general UV-shield finishing today. Even stricter requirements for over 50 UPF value can be found in work suits for all-day, outdoor use in Australia. While ULS-700 has been the main seller, demand for ULS-1700 is also growing.
General Characteristics
| |
ULS-700 |
ULS-1700 |
| Appearance |
White emulsion |
White emulsion |
| Ionicity |
Nonionic |
Nonionic |
| pH |
Neutral |
Neutral |
UV-shielding Properties and Durability
Method
| Substrate: |
Cotton broad cloth (non-mercerized) |
| Liquor: |
1% and 3% solutions of each UV shielding agents |
| Treatment: |
1 dip, 1 nip |
| Pick-up: |
80% |
| Drying: |
100°C x 2 min |
| Heat setting: |
160°C x 2 min |
UV-shielding properties
UV transmittance (%T) between 500-250 nm in treated fabric observed using Hitachi spectrophotometer U-3200 (with integrating sphere)
Durability
JIS L-0217 103 (with use of Marseilles soap)
Alteration of UV-shielding effects observed after 0, 10, 20 and 30 launderings.
Australia/New Zealand Standards
- Examined are UPF (UV protection factor) values of ULS-700 and ULS-1700 solutions in different concentrations, as well as UVR (UV radiation of 290 -400 nm) protection levels
- Method
| Substrate: |
Cotton broad cloth (non-mercerized) |
| Liquor: |
1%, 2% and 3% solutions of each UV-shielding agent |
| Treatment: |
1 dip, 1 nip |
| Pick-up: |
100% |
| Drying: |
100°C x 2 min |
| Heat setting: |
160°C x 2 min |
- Standards
Australia/New Zealand standards (AS/NZS 4399: 1996)
- Results
| |
UPF value |
UVR protection |
| ULS-700 |
1%soln. |
14 |
None |
| 2%soln. |
33 |
Very Good Protection |
| 3%soln. |
57 |
Excellent Protection |
| ULS-1700 |
1%soln. |
25 |
Very Good Protection |
| 2%soln. |
53 |
Excellent Protection |
| 3%soln. |
84 |
Excellent Protection |
|