Specialty Grades
Low Saponification PVOH LL Series
GOHSENX™ LL Series
A low degree of saponification PVOH that hardly dissolves in water.
GOHSENX™ LL dissolves in organic solvents and mixture solutions.
GOHSENX™ LL is used worldwide as a hot melt adhesive, providing the property of melting at relatively low temperatures, besides suspension aids for vinyl polymerization.
Structural formula
- Properties
- Dissolves in organic solvents such as methanol, ethanol, methyl acetate, and acetone, and aqueous mixture solution.
Melts at 100℃ to 180℃ and allows hot melt coating and adhesion.
Grade |
Volatile Matter |
Viscosity (mPa・s) |
Saponification Degree (mol% ) |
Applications |
|---|---|---|---|---|
LL-810 |
3.0 or less |
7.0～10.0 |
45.0～51.0 |
Secondary dispersant for suspension
polymerization of vinyl chloride,
Adhesive (hot-melt), Binder, Anchor coating agent |
LL-920 |
3.0 or less |
9.0～13.0 |
30.0～38.0 |
|
LL-940 |
3.0 or less |
20.0～28.0 |
34.0～41.0 |
Viscosity: mixture solution of 10.0% methanol and water (1/1, volume ratio)
| Solvent | LL-810 | LL-920 | LL-940 |
|---|---|---|---|
Water |
△ |
△ |
△ |
Water/Methanol = 1/1 |
◎ |
◎ |
◎ |
Methanol |
○～△ |
○ |
○ |
Ethanol |
○～△ |
○ |
○ |
Acetone |
○～△ |
○ |
○ |
Methyl acetate |
△ |
○ |
○ |
Toluene |
× |
× |
× |
Trichlene |
× |
△ |
△ |
Solubility (High) ◎>○>△>× (Low)
Grade |
Initial Young's Modulus (109dyne/cm2) |
Yield Strength (kg/cm2) |
Rupture Strength (kg/cm2) |
Elongation (%) |
|---|---|---|---|---|
LL-810 |
Approx 4.5 |
112 |
126 |
130 |
LL-920 |
Approx 5.0 |
125 |
140 |
145 |
LL-940 |
Approx 10.5 |
270 |
219 |
45～160 |
Measuring conditions
Film: 150～200μ×40mm×15mm
Humidity: 20℃×65 % RH×7days
Tensile speed with autograph, 100mm/min, 7 cycles
| LL-810 | LL-920 | LL-940 | ||
|---|---|---|---|---|
| Incipient Fluidization Temperature (℃) |
Approx. 100 |
Approx. 100 |
Approx. 110 |
|
| Incipient Fluidization Viscosity (poise) |
150 |
300 |
4,000 |
|
| Decomposition Temperature (℃) |
250 or higher |
250 or higher |
250 or higher |
|
| Grass Transition Point (℃) |
Approx. 50 |
Approx. 50 |
Approx. 45 |
|
Measuring conditions:
Koka flow tester
Load 20kg/cm2, heat increase rate 1℃/min, Orifice dia 1m/mΦ×10m/mL
- Other Precautions
- GOHSENX™ LL series is a stable polymer compound, and does not usually putrefy, decompose, or depolymerize.
However, owing to its lower glass transition point, the particles conglomerate when stored at high temperature / humidity and under a heavy load. Keep the above in mind especially storage in sumer or rainy seasons.
