Description

Poly(Vinyl Alcohol-Co-Ethylene) is a synthetic copolymer combining the properties of polyvinyl alcohol (PVA) and polyethylene. This material is valued for its excellent film-forming, emulsifying, and adhesive characteristics, offering a unique balance of water solubility and toughness. It is essential for industries requiring advanced polymer performance in applications such as specialty coatings, adhesives, and controlled-release systems.

Application

• Adhesive Formulations: Used as a key binder and film-forming agent in water-based adhesives for paper, textiles, and packaging.
• Specialty Coatings: Serves as a base polymer for high-performance barrier coatings, paper sizing, and release coatings.
• Pharmaceutical & Controlled Release: Employed in tablet coatings, transdermal patches, and as a matrix for the controlled delivery of active ingredients.
• Textile & Fiber Sizing: Provides a protective, temporary coating on yarns to reduce breakage during weaving.
• Emulsion Stabilizer: Acts as a protective colloid and stabilizer in the polymerization of vinyl acetate and other monomers.
• Film Production: Used to manufacture water-soluble films for unit-dose packaging of agrochemicals, detergents, and dyes.

Basic Information

Product Name	Poly(Vinyl Alcohol-Co-Ethylene)
CAS No.	26221-27-2
Molecular Formula	(C2H4O.C4H6O)x
Molecular Weight	Varies by grade (Typical range: 20,000 - 200,000 g/mol)
Synonyms	Ethylene-Vinyl Alcohol Copolymer; EVOH; Poly(ethylene-co-vinyl alcohol); Vinyl Alcohol-Ethylene Copolymer; EVAL; E/VAL; OH-Ethylene Copolymer; Polyvinyl Alcohol Ethylene Copolymer
EINECS	247-499-8

Quality Control

Our Poly(Vinyl Alcohol-Co-Ethylene) is manufactured under a strict quality management system. Each batch is tested to ensure consistent properties such as degree of hydrolysis, ethylene content, viscosity, and residual monomer levels. Certificates of Analysis (COA) documenting these parameters are available for every shipment. We can support compliance with relevant regulatory frameworks including REACH and FDA for specific grades.

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); containers must be kept tightly sealed after initial opening to prevent moisture absorption, which can affect physical properties.

Specification

Item	Specification
Appearance	White to off-white granules or powder
Identification (IR)	Conforms to standard
Ethylene Content	20 - 50 mol% (Grade dependent)
Degree of Hydrolysis	70 - 99 mol% (Grade dependent)
Viscosity (4% aq. sol., 20°C)	5 - 60 mPa·s (cP)
Volatiles (Moisture)	≤ 5.0 %
Residual Vinyl Acetate Monomer	≤ 0.1 %
Ash Content	≤ 1.0 %

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