The “wanwei” brand polyvinyl alcohol (PVA) series products produced by Anhui wanwei high tech materials Co., Ltd. are made by using advanced technology and process. First, vinyl acetate produced by calcium carbide acetylene method is used as raw material; second, vinyl acetate is produced from biological alcohol, methanol is used as raw material, azodiisobutyronitrile is used as initiator, and is made through polymerization, alcoholysis and other processes.
The appearance is white flake, granular or powdery solid (low alkali alcoholysis process) or white flocculent solid (high alkali alcoholysis process). Specific gravity: 1.23-1.31g/cm3, sheet PVA filling specific gravity: 0.42-0.52g/cm3, flocculent PVA filling specific gravity: 0.20-0.27g/cm3.
Better temperature stability
Extended Open Time
Slip Resistance
Sag Resistance
Delayed Hydration
Improved Workability
Dosage-saving Benefit with Blanced Strength & Water Retention
Increased Adhension Strength
| index | Numerical Value |
| Viscosity（mpa.s） | 60.0-75.0 |
| Average degree of polymerization | 2600-2800 |
| Alcoholysis degree(Mol/mol) | 98.0-100.0 |
| Molecular weight | 114400-123200 |
| Volatile matter%（≤） | 7.0 |
| Sodium acetate%（≤） | 2.8 |
| Ash content%（≤） | 1.0 |
| PH Value | 5-7 |
| Purity% | ≥91.5 |
| Packing specification | 25Kg/bag |
Mainly used as: high viscosity adhesive, high-grade coating, vinylon, high-strength membrane PVA fiber, water-soluble fiber, flame retardant, hollow fiber, etc.
The raw materials and production process of our products are strictly controlled. You can rest assured. The price is reasonable and is your good choice. Integrity is our purpose. If you have any questions in the purchase process, you can consult us at any time.
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