Description

Polyvinyl Formal-Acetal is a versatile synthetic resin derived from polyvinyl alcohol, combining the properties of both formal and acetal functional groups. This unique copolymer offers an excellent balance of film-forming ability, adhesion, and chemical resistance, making it a critical component in high-performance industrial formulations. It is essential for manufacturers in the coatings, adhesives, and specialty chemical industries seeking durable and reliable polymeric binders.

Application

• Adhesive Formulations: As a key binder in high-strength structural and laminating adhesives for metals, wood, and plastics.
• Protective Coatings: Used in primers and topcoats for metal, automotive, and industrial equipment due to its excellent adhesion and corrosion resistance.
• Magnetic Media: Serves as a critical binder component in the production of magnetic tapes and floppy disks.
• Wire Enamels: An essential resin in insulating varnishes and enamels for electrical wires and components.
• Textile Sizing: Provides strength and abrasion resistance to yarns during weaving processes.
• Printing Inks: Enhances the durability and gloss of specialty printing inks.
• Composite Materials: Acts as a matrix or binder in fiber-reinforced composites and abrasive products.

Basic Information

Product Name	Polyvinyl Formal-Acetal
CAS No.	252364-22-0
Molecular Formula	(C5H8O2)n · (C2H4O)m
Molecular Weight	Varies (Polymer)
Synonyms	Polyvinyl Formal Acetate; PVF-PVA Acetal; Vinyl Formal-Acetal Resin; Poly(vinyl formal-co-acetal); Formvar (related trade name); Polyvinyl Acetal; Vinyl Acetal Polymer; PVAcetal
EINECS	Contact for details

Quality Control

Our Polyvinyl Formal-Acetal is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as degree of acetalization, viscosity, and residual acetate content. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing the specifications and test results. Our quality commitment ensures the material meets the demanding requirements of industrial adhesive and coating applications.

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). Keep away from heat sources and open flames. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption which may affect performance.

Specification

Item	Specification
Appearance	White to off-white granules or powder
Identification (IR)	Conforms
Assay (Acetal Content)	70.0 - 85.0 %
Viscosity (10% solution)	20 - 60 mPa·s
Acetyl Content	≤ 12.0 %
Hydroxyl Content	5.0 - 13.0 %
Volatile Matter	≤ 3.0 %
Ash Content	≤ 0.5 %

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