Description

Ethenylbenzene Polymer With 1,3-Butadiene And 2-Methyl-1,3-Butadiene, Hydrogenated is a high-performance, fully hydrogenated block copolymer derived from styrene, butadiene, and isoprene monomers. This specialized material offers exceptional stability, color, and aging resistance compared to its non-hydrogenated counterparts, making it a critical component for demanding applications. It is primarily sought by manufacturers in the adhesives, sealants, thermoplastic elastomers (TPEs), and polymer modification sectors who require superior weatherability and thermal-oxidative stability.

Application

• High-Performance Adhesives & Sealants: Used as a tackifier and modifier to enhance cohesive strength, flexibility, and long-term durability, especially in construction and automotive applications.
• Thermoplastic Elastomers (TPEs): Serves as a key component in soft-touch grips, seals, and gaskets that require excellent resistance to UV light, heat, and oxidation.
• Polymer Modification & Compounding: Employed to improve the impact resistance, flexibility, and processing characteristics of engineering plastics like polystyrene (PS) and polypropylene (PP).
• Bitumen Modification: Enhances the elasticity, low-temperature performance, and rutting resistance of asphalt for high-grade road paving and roofing membranes.
• Viscosity Index Improvers: Acts as a stabilizer and thickener in high-performance lubricants and greases to maintain viscosity across a wide temperature range.
• Medical Device Components: Utilized in non-implantable medical parts requiring clarity, flexibility, and biocompatibility, subject to specific purity grades.

Basic Information

Product Name	Ethenylbenzene Polymer With 1,3-Butadiene And 2-Methyl-1,3-Butadiene, Hydrogenated
CAS No.	132983-38-1
Molecular Formula	(C8H8·C4H6·C5H8)n (Hydrogenated)
Molecular Weight	Varies by grade and block composition
Synonyms	Hydrogenated Styrene-Butadiene-Isoprene Block Copolymer; Hydrogenated SBI Block Copolymer; HSBI; Hydrogenated Styrene-Isoprene-Butadiene Polymer; Fully Hydrogenated Styrenic Block Copolymer; SEPS (Styrene-Ethylene/Propylene-Styrene) type polymer; Hydrogenated Poly(styrene-b-butadiene-b-isoprene); Thermoplastic Rubber, Hydrogenated
EINECS	Contact for details

Quality Control

Our Hydrogenated Styrene-Butadiene-Isoprene Block Copolymer is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including verification of hydrogenation level, molecular weight distribution, and stabilizer content. Certificates of Analysis (COA) detailing key specifications are 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 strong oxidizing agents and heat sources to maintain product integrity. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow pellets or crumbs
Identification (IR)	Conforms to structure
Styrene Content	10% - 40% (by wt.)
Degree of Hydrogenation	> 98%
Volatile Matter	< 0.5%
Ash Content	< 0.1%
Stabilizer Content	0.1% - 1.0% (typically BHT)
Melt Flow Index (MFI)	1 - 30 g/10min (varies by grade)

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