Description

Polyisobutane is a synthetic hydrocarbon polymer derived from isobutylene, valued for its excellent chemical stability, low gas permeability, and hydrophobic nature. Its primary commercial significance lies in its versatility as a tackifier, viscosity modifier, and sealant component across multiple high-performance industries. Key industrial users include manufacturers of adhesives, sealants, lubricants, and personal care products who require a stable, non-reactive, and high-purity base material.

Application

• Adhesive & Sealant Formulation: Acts as a primary tackifier and base polymer in pressure-sensitive adhesives (PSAs), hot-melt adhesives, and construction sealants, providing long-lasting tack and cohesion.
• Lubricant & Grease Additive: Used as a thickener and viscosity index improver in synthetic lubricants and greases, enhancing performance under extreme temperatures and pressures.
• Personal Care & Cosmetics: Serves as a non-greasy, occlusive emollient and film-forming agent in lip balms, hair conditioners, and skin care products, offering moisture barrier properties.
• Polymer Modification: Employed as a plasticizer and processing aid for various rubbers and plastics, improving flexibility, weatherability, and processing characteristics.
• Electrical Insulation: Used in the compounding of cable-filling compounds and insulating tapes due to its excellent dielectric properties and moisture resistance.
• Chewing Gum Base: Functions as a key elastomeric component in chewing gum base, providing the necessary chew texture and elasticity.

Basic Information

Product Name	Polyisobutane
CAS No.	40921-86-6
Molecular Formula	(C4H8)n
Molecular Weight	Variable (Low to High Molecular Weight Grades)
Synonyms	Polyisobutylene (PIB); Isobutylene Homopolymer; 2-Methyl-1-propene Homopolymer; Oppanol (Trade Name); Glissopal (Trade Name); Indopol (Trade Name); Low Molecular Weight Polyisobutene; LMW PIB
EINECS	Contact for details

Quality Control

Our Polyisobutane is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive testing including viscosity, molecular weight distribution, and purity analysis. A Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to guarantee 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). As this material is easily oxidized, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation to maintain optimal quality and prevent degradation. Keep away from strong oxidizing agents and heat sources.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Viscosity (at 100°C)	Grade Dependent (e.g., 30 - 6000 cSt)
Molecular Weight (Mn)	Grade Dependent (e.g., 300 - 5000 g/mol)
Specific Gravity (20°C)	0.83 - 0.91
Flash Point	> 150 °C
Volatile Content	< 0.5 %

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