Description

Polyvinyl Acetal is a versatile class of synthetic resins formed by the reaction of polyvinyl alcohol with aldehydes, with CAS number 63148-63-0 representing a specific grade or formulation. This material is valued for its excellent film-forming properties, strong adhesion to various substrates, and good flexibility. It serves as a critical component in industries requiring durable, transparent, and chemically resistant binders and coatings.

Application

• Adhesive Formulations: Used as a key binder in high-strength industrial and construction adhesives.
• Protective Coatings: Serves as a film-forming agent in primers, wash primers, and corrosion-resistant coatings for metals.
• Ink and Pigment Binders: Provides excellent dispersion and binding properties in printing inks and pigment preparations.
• Safety Glass Interlayer: A primary component in polyvinyl butyral (PVB) sheets used as the interlayer in laminated safety glass for automotive and architectural applications.
• Textile Sizing and Finishing: Imparts stiffness, body, and water resistance to fabrics.
• Pharmaceutical Coatings: Used in enteric and sustained-release tablet coatings due to its film-forming and pH-dependent solubility.
• Specialty Membranes: Employed in the manufacture of filtration and separation membranes.

Basic Information

Product Name	Polyvinyl Acetal
CAS No.	63148-63-0
Molecular Formula	(C4H6O2)n (Representative for Polyvinyl Butyral type)
Molecular Weight	Varies by grade and acetal content
Synonyms	PV Acetal; Polyvinyl Butyral (PVB); Polyvinyl Formal (PVF); Polyvinyl Acetal Resin; Butvar; Mowital; Pioloform; Saflex; Vinyl Acetal Polymer; Acetalized Polyvinyl Alcohol
EINECS	Contact for details

Quality Control

Our Polyvinyl Acetal is manufactured under a strict quality management system. Each batch is tested against key parameters such as degree of acetalization, molecular weight distribution, viscosity, and residual acetate content to ensure batch-to-batch consistency and performance. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We can supply grades compliant with relevant industry standards for safety glass, adhesives, and coatings.

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 container tightly sealed when not in use to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white granules or powder
Identification (IR)	Conforms
Acetal Content	Contact for details
Hydroxyl Content	Contact for details
Acetate Content	Contact for details
Viscosity (Solution)	Contact for details
Volatile Matter	< 3.0%
Ash Content	< 0.1%

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