Polyvinyl Alcohol (PVA) is a kind of heavy polymer. It is white or light yellow floc, granular or powdery in appearance. It is non-toxic, insipid and harmless, and it is water-soluble and the solvent provide good viscosity and film building. It can withstand oils, lubricants, hydrocarbons and most other organic solvents. Polyvinyl Alcohol has better chemical stability, and provides ease in firm building; It possess the typical chemical properties of poly-ols and can carry out process of esterification, etherealization, aceatalization etc.
Physical Specification
| Grade | Hydrolysis（mol%) | Viscosity (mpa.s) | Volatiles | Ash | PH | Purity |
| 05-88 | 87.0-89.0 | 4.5-6.0 | < 5% | < 1% | 5-7 | > 93.5% |
| 17-88 | 87.0-89.0 | 20.5-24.5 | < 5% | < 1% | 5-7 | > 93.5% |
| 20-88 | 87.0-89.0 | 29.0-34.0 | < 5% | < 1% | 5-7 | > 93.5% |
| 24-88 | 87.0-89.0 | 45.0-55.0 | < 5% | < 1% | 5-7 | > 93.5% |
| 05-99 | 98.0-99.0 | 5.0-6.5 | < 5% | < 1% | 5-7 | > 93.5% |
| 17-99 | 99.0-100.0 | 27.0-34.0 | < 5% | < 1% | 5-7 | > 94% |
| 20-99 | 99.0-100.0 | 43.0-53.0 | < 5% | < 1% | 5-7 | > 94% |
| 24-99 | 99.0-100.0 | 68.0-78.0 | < 5% | < 1% | 5-7 | > 94% |
Properties / Benefits
Polyvinyl Alcohol (PVA) provides the following benefits: Soluble in water and insoluble in almost all organic solvents. Supply excellent film forming property Supply extreme tensile strength and friction strength Superior to oil resistance
Application
Polyvinyl Alcohol (PVA) may be used in a variety of cement or gypsum based drymix mortars applications as follows: interior skim coat (wall putty) ceramic tile adhesive dry mortar heat preservation wall binder thin layer of adhesive flexible adhesive mineral plaster PVC emulsion screen photographic film confused on the cloth zinc plate printing, photographic film long fiber yarn sizing agent wet PVC latex adhesives
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| Classification | Partially alcoholysis | Fully alcoholysis | |||||||||||||||||
| PVA Grade | 05-88 | 17-88 | 20-88 | 24-88 | 05-99 | 17-99 | 20-99 | 24-99 | |||||||||||
| Kuraray Grade | PVA-205 | PVA-217 | PVA-220 | PVA-224 | PVA-105 | PVA-117 | PVA-120 | PVA-124 | |||||||||||
| Textile | Span | ★ | ★ | ||||||||||||||||
| Filament | ★ | ★ | |||||||||||||||||
| hard finish of textiles | ★ | ★ | ★ | ||||||||||||||||
| Paper processing | clear coating | ★ | ★ | ★ | |||||||||||||||
| pigment coating | ★ | ★ | ★ | ||||||||||||||||
| Adhesive | Paper adhesive | ★ | ★ | ★ | ★ | ★ | |||||||||||||
| Remoistenable adheisve | ★ | ★ | ★ | ★ | |||||||||||||||
| Plywood adhesive | ★ | ★ | ★ | ★ | |||||||||||||||
| Disperant | Vinyl acetate emulsion polymerization | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ||||||||||
| Vinyl chloride suspension polymerization | ★ | ★ | |||||||||||||||||
| Film Formation | Film | ★ | ★ | ||||||||||||||||
| Sponge grindstone | ★ | ★ | |||||||||||||||||
| Caking Agents | Ferrite ceramics | ★F | ★ | ||||||||||||||||
| Construction | Gypsum application | ★F | ★F | ★F | |||||||||||||||
| cement application | F | F | F | ||||||||||||||||
| Note: F= avaiable by fine powder | |||||||||||||||||||
