Description

Poval 217 is a high-quality, partially hydrolyzed polyvinyl alcohol (PVOH) polymer, widely recognized for its excellent film-forming, adhesive, and emulsifying properties. This versatile chemical is essential for formulations requiring strong binding power, water solubility, and barrier characteristics. It serves as a critical raw material for manufacturers in the adhesives, paper coating, textile sizing, and construction chemical industries seeking reliable performance and batch-to-batch consistency.

Application

• Adhesive Formulations: A key binder in water-based adhesives for wood, paper, and packaging, providing high initial tack and strong bond strength.
• Paper & Paperboard Coating: Used as a coating agent to improve surface strength, printability, and oil/grease resistance.
• Textile Sizing: Acts as a warp sizing agent to protect yarns during weaving, offering excellent abrasion resistance and easy desizing.
• Construction Chemicals: Employed as a thickener, binder, and water-retention agent in cement-based mortars, tile adhesives, and gypsum products.
• Polymerization Aid: Serves as a protective colloid and stabilizer in the emulsion polymerization of vinyl acetate and other monomers.
• Film Production: Used to manufacture water-soluble films for agrochemical packaging, detergent pods, and other controlled-release applications.

Basic Information

Product Name	Poval 217
CAS No.	130960-31-5
Molecular Formula	(C₂H₄O)ₓ·(C₄H₆O₂)ᵧ
Molecular Weight	Varies by grade (Typical Mw: 85,000 - 146,000)
Synonyms	Polyvinyl Alcohol (Partially Hydrolyzed); PVOH; PVAL; PVA 217; Ethenol, homopolymer; Vinyl alcohol polymer; Alcotex 217; Gohsenol; Mowiol; Elvanol; Polyviol; Polyvinyl alcohol, hydrolyzed
EINECS	Contact for details

Quality Control

Our Poval 217 is manufactured under a strict quality management system. Each batch is tested against rigorous in-house specifications to ensure consistent performance in viscosity, degree of hydrolysis, and purity. A Certificate of Analysis (COA) documenting key parameters is provided with every shipment to guarantee compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the original container tightly sealed to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	White to cream-colored granular powder
Degree of Hydrolysis	86.5 - 89.0 %
Viscosity (4% aq. sol., 20°C)	20.0 - 26.0 mPa·s
Volatiles	≤ 5.0 %
pH (4% aq. sol.)	5.0 - 7.0
Ash Content	≤ 0.5 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.