Waterborne Polyurethane for Textile
Hyrex R-NRD or R-VL is non-yellowing polyurethane dispersion specially developed for finishing on natural fibers such as Cotton, Linsey, Rayon and Polyester, Nylon as well. Applied to stretching fabrics, it shows following advantages
⊙
Good recovery , elastic properties and anti-crease ,shrink-resist finishes.
-
Soft handle and warm touch.
-
Excellent wash fastness and semi-permanent anti-static properties of the treatments.
-
Good compatibility with other base resins (Acryl, Melamine, Glyoxal, Amino Silicone etc.) and synergy effects when blended with other resins.
⊙
R-NRD gives excellent absorbancy properties and R-VL provides silky touch.
| Items |
R-NRD/VL |
Appearance
Component
Solids (%)
Ion
Viscosity (cps/25°C)
Curing Temp
Solubility |
semi-transparent liquid( R-NRD ) / milky-white liquid
aliphatic polyurethane dispersion
25 ± 1
Nonion
300 ↓
155°C↑
soluble in cold water |
-
Typical process is as follows :
| Dipping
| →
| Pick up
| →
| Pre-Drying
| →
| Curing
|
| Hyrex : 5%
|
| 60∼100%
|
| 105 ∼ 120℃
|
| 155 ∼ 180℃
|
|
|
|
|
| (2 ∼ 3min)
|
| (2 ∼ 3min) |
※
Remarks :
-
Minimum 7days of curing time is required for the most effective finishing results.
-
CR-20, cross-linker can be added, if necessary.
| Items
| Example1
| Example2
| Example3
| Example4
|
Hyrex R-NRD
CR - 20
Glyoxal resin
Glyoxal catalyst
Fluoro resin
Amino Silicone
water
| 5
0∼03
×
×
×
×
95
| 5
0∼03
×
×
×
2∼1
93∼94
| 5
0∼03
4∼2
2∼1
×
2∼1
87∼91
| 5
0∼03
×
×
3∼1
2∼1
90∼93
|
| Substrates
| Cotton / Linsey-woosley / Rayon / Nylon / Polyester
|
Curing
condition
| Pre - Dry
| 110 ∼ 120℃
(2min)
|
| Curing
| 155∼180℃
(2∼3min)
|
| Properties
| Flexibility
Drape
Elasticity
Anti-static
| Flexibility
Drape
Elasticity
Anti-static
| W&W finishing
Anti-crease
Anti-shrinkage
Anti-static
| Peach Skin
finishing
Anti-static
Elasticity |
※
Remarks :
① Cross-linker CR-20 improves the drape and anti-wrinkling properties.
② When Glyoxal resin is used, 5% of DSA is to be used based on the amount of Hyrex.
→ Add DSA to Hyrex and mixing and then add other resins.
③ Laboratory testing should be proceeded prior to actual field application.
|
