Product Description: PVA 173 (Polyvinyl Alcohol)
PVA 173 is a high-quality polyvinyl alcohol (PVA) that is widely used in various industrial applications due to its excellent film-forming, emulsifying, and adhesive properties. This water-soluble synthetic polymer is known for its versatility and is commonly utilized in the production of coatings, adhesives, and films. PVA 173 is characterized by its high degree of hydrolysis, which enhances its solubility in water and improves its performance in aqueous environments.
Uses of PVA 173
PVA 173 is employed in a variety of applications across different industries, including:
- Adhesives: Used as a bonding agent in woodworking, paper, and textile industries.
- Coatings: Acts as a protective layer in paints and coatings, providing durability and resistance to moisture.
- Textiles: Utilized in the textile industry for sizing and finishing processes.
- Paper Products: Enhances the strength and durability of paper products.
- Films: Used in the production of biodegradable films for packaging applications.
- Cosmetics: Serves as a thickening agent and film-former in cosmetic formulations.
- Pharmaceuticals: Employed in drug delivery systems and as a binder in tablet formulations.
Technical Data of PVA 173
| Property | Value |
|---|---|
| Chemical Name | Polyvinyl Alcohol |
| Appearance | White to off-white powder |
| Molecular Weight | 31,000 – 50,000 g/mol |
| Degree of Hydrolysis | 85% – 89% |
| Viscosity (1% solution) | 20 – 30 mPa·s |
| Solubility | Soluble in water |
| pH | 4.0 – 6.0 |
| Melting Point | 230 – 240 °C |
| Glass Transition Temperature | 60 – 70 °C |
| Density | 1.19 g/cm³ |
| Storage Conditions | Cool, dry place |
| Shelf Life | 24 months from the date of manufacture |
Key Features of PVA 173
- Water Solubility: Easily dissolves in water, making it suitable for various aqueous applications.
- Biodegradability: Environmentally friendly, as it can decompose naturally.
- Film-Forming Ability: Forms a strong, flexible film that is resistant to oils and solvents.
- Non-Toxic: Safe for use in food packaging and cosmetic applications.
PVA 173 is a reliable choice for manufacturers looking for a versatile polymer that meets the demands of modern applications while being environmentally conscious.