Description

Poly(Vinyl Butyral) (CAS NO 27360-07-2) is a high-performance synthetic resin renowned for its exceptional adhesion, flexibility, and optical clarity. Its primary value lies in its ability to form tough, transparent films with excellent binding properties for glass and other substrates. This polymer is a critical raw material for manufacturers in the safety glass, coatings, and specialty adhesives industries, where performance and reliability are paramount.

Application

• Safety Glass Interlayer: The dominant application is as the plastic interlayer in laminated safety glass for automotive windshields and architectural glazing, providing impact resistance and preventing shattering.
• Protective Coatings: Used in formulating primers and wash primers for metals, offering excellent corrosion resistance and promoting paint adhesion.
• Specialty Adhesives & Binders: Serves as a key binder in ceramic inks, printing inks, and high-strength adhesives for wood and textiles.
• Photographic & Film: Employed as a subbing layer or binder in photographic films and papers.
• Electronics: Used in the production of printed circuit boards and as a binder for electronic pastes.
• Paints & Inks: Functions as a film-forming agent and adhesion promoter in high-performance industrial coatings and inks.

Basic Information

Product Name	Poly(Vinyl Butyral)
CAS No.	27360-07-2
Molecular Formula	(C8H14O2)n
Molecular Weight	Varies by grade (Typical Mw: 40,000 - 250,000 g/mol)
Synonyms	PVB; Polyvinyl Butyral; Vinyl Butyral Resin; Butvar® (Trade Name); Mowital® (Trade Name); Saflex® (Trade Name); Poly[(2-propyl-1,3-dioxane-4,6-diyl)methylene]; Ethenol, polymer with butanal
EINECS	248-375-1

Quality Control

Our Poly(Vinyl Butyral) is manufactured under a strict quality management system. Each batch is tested against rigorous in-house specifications to ensure consistent performance in key parameters such as molecular weight, viscosity, and hydroxyl content. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee traceability and compliance with your technical 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). Keep away from heat sources and open flame. The material is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white granules or powder
Identification (IR)	Conforms
Assay (PVB Content)	≥ 98.0 %
Vinyl Acetate Content	≤ 3.0 %
Hydroxyl Content (as % PVOH)	10.0 - 13.0 %
Viscosity (10% in ethanol)	Contact for details
Volatiles	≤ 3.0 %
Ash Content	≤ 0.1 %

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