Comparison of KURARAY POVAL 5-88 and PVA 205
KURARAY POVAL 5-88 and PVA 205 can be considered "similar performance alternatives." They are highly similar only in key parameters such as viscosity and degree of hydrolysis, and can meet similar application requirements.
Viscosity matching: The viscosity of a 4% aqueous solution of KURARAY POVAL 5-88 is approximately 5 mPa·s; "205" in PVA 205 is a model designation used by brands such as Sinopec, where "20" represents a degree of polymerization of approximately 2000, corresponding to a 4% aqueous solution viscosity of around 5-6 mPa·s. In daily use, their viscosities can be considered essentially identical.
Similar degree of hydrolysis: The degree of hydrolysis of KURARAY POVAL 5-88 is approximately 88% (partially hydrolyzed); degree of hydrolysis of PVA 205 is typically 88%-89%, also belonging to partially hydrolyzed type.
Application scenarios overlap: Due to similar parameters, both are suitable for general applications such as ordinary adhesives, paper sizing, textile sizing agents, and coating auxiliaries, where basic performance of PVA is required.
| Partial alcoholysis products | KURARAY POVAL 3-88 | PVA-203 | 3.2-3.6 | 87.0-89.0 | 97.5±2.5 | ≤0.4(1.06) | 5.0-7.0 |
|---|---|---|---|---|---|---|---|
| KURARAY POVAL 5-88* | PVA-205* | 4.6-5.4 | 86.5-89.0 | 97.5±2.5 | ≤0.4(1.06) | 5.0-7.0 | |
| KURARAY POVAL 5-88MB | PVA-205 MB | 4.6-5.4 | 86.5-89.0 | 97.0±3.0 | ≤0.4(1.06) | 5.0-7.0 | |
| KURARAY POVAL 22-88* | PVA-217* | 20.5-24.5 | 87.0-89.0 | 97.5±2.5 | ≤0.4(1.06) | 5.0-7.0 | |
| KURARAY POVAL 22-88SB | PVA-217 SB | 20.5-24.5 | 87.0-89.0 | 97.0±3.0 | ≤0.4(1.06) | 5.0-7.0 | |
| KURARAY POVAL 22-88PK | PVA-217 PK | 20.5-24.5 | 87.0-89.0 | 97.5±2.5 | ≤0.4(1.06) | 5.0-7.0 | |
| KURARAY POVAL 30-88* | PVA-220* | 27.0-33.0 | 87.0-89.0 | 97.5±2.5 | ≤0.4(1.06) | 5.0-7.0 | |
| KURARAY POVAL 30-88SB | PVA-220 SB | 27.0-33.0 | 87.0-89.0 | 97.0±3.0 | ≤0.4(1.06) | 5.0-7.0 | |
| KURARAY POVAL 44-88* | PVA-224* | 40.0-48.0 | 87.0-89.0 | 97.0±3.0 | ≤0.4(1.06) | 5.0-7.0 | |
| KURARAY POVAL 95-88 | PVA-235 | 80.0-110.0 | 87.0-89.0 | 97.0±3.0 | ≤0.4(1.06) | 5.0-7.0 |
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