Description

Butyl Resin CAS NO 157885-28-4 is a high-performance synthetic polymer valued for its excellent barrier properties, flexibility, and chemical resistance. This material is crucial for applications demanding superior impermeability to gases and moisture, ensuring long-term product stability and protection. It is primarily sought by manufacturers in the adhesive, sealant, coating, and specialty packaging industries for formulating durable and reliable products.

Application

• Hot-Melt and Pressure-Sensitive Adhesives (PSA): Provides tack, cohesion, and flexibility for tapes, labels, and assembly applications.
• Industrial & Protective Coatings: Used in formulations for corrosion-resistant paints, tank linings, and moisture-barrier coatings.
• Sealants and Caulks: Imparts durability, adhesion, and weather resistance for construction and automotive sealing.
• Polymer Modification: Acts as an impact modifier or processing aid to enhance the properties of other plastics and elastomers.
• Specialty Packaging: Serves as a key component in laminates and films requiring high gas and moisture barrier properties.
• Rubber Compounding: Used in the production of hoses, gaskets, and other molded rubber goods for improved performance.

Basic Information

Product Name	Butyl Resin
CAS No.	157885-28-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyisobutylene resin; PIB resin; Isobutylene polymer; Butyl polymer; Butyl rubber resin; High molecular weight polyisobutylene; Synthetic rubber resin; IIR (Isobutylene-isoprene rubber) resin
EINECS	Contact for details

Quality Control

Our Butyl Resin is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in molecular weight distribution, viscosity, and purity, meeting the precise requirements of industrial applications. Certificates of Analysis (COA) detailing all relevant specifications are available upon request.

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. For long-term storage, ensure the container is kept sealed to prevent contamination and moisture absorption.

Specification

Item	Specification
Appearance	Pale yellow to amber solid or viscous mass
Identification (IR)	Conforms to structure
Mooney Viscosity (ML 1+8 @ 125°C)	Contact for details
Molecular Weight (Mw)	Contact for details
Volatile Matter	≤ 0.5%
Ash Content	≤ 0.1%

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