Description

Polystyrene-B-Poly(Ethylene-Ran-Butylene)-B-Polystyrene-G-Maleic Anhydride is a functionalized triblock copolymer, specifically a maleic anhydride-grafted styrenic thermoplastic elastomer. This material matters because the grafted maleic anhydride groups provide reactive sites for compatibilization, adhesion promotion, and property modification in polymer blends and composites. It is primarily needed by manufacturers in the plastics, adhesives, coatings, and advanced materials industries seeking to enhance the performance of their formulations.

Application

• Polymer Compatibilizer: Acts as a coupling agent to improve the interfacial adhesion and dispersion of immiscible polymer blends, such as polyolefin/polyamide or polyolefin/polyester systems.
• Adhesive & Sealant Formulations: Enhances adhesion to polar substrates (metals, glass, treated plastics) in hot-melt and pressure-sensitive adhesives.
• Reinforced Composites: Improves the bonding between non-polar polymer matrices (like PP or PE) and polar fillers or reinforcements (glass fiber, minerals).
• Impact Modifier: Used to toughen engineering plastics while maintaining other key mechanical properties.
• Reactive Processing Aid: Serves as a reactive intermediate for further chemical modifications, such as creating amine-functionalized polymers.
• Coatings & Paints: Functions as a dispersing agent and adhesion promoter in coating systems for improved durability and substrate wetting.

Basic Information

Product Name	Polystyrene-B-Poly(Ethylene-Ran-Butylene)-B-Polystyrene-G-Maleic Anhydride
CAS No.	124578-11-6
Molecular Formula	Typically represented as (C8H8)x.(C4H8)y.(C2H4)z with grafted C4H2O3
Molecular Weight	Variable (Typically 50,000 - 200,000 g/mol). Contact for details.
Synonyms	SEBS-g-MAH; Maleated SEBS; SEBS-g-Maleic Anhydride; Polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene-graft-maleic anhydride; Styrene-Ethylene/Butylene-Styrene Grafted with Maleic Anhydride; Functionalized SEBS; SEBS-MA; TPE-g-MAH
EINECS	Contact for details.

Quality Control

Our Polystyrene-B-Poly(Ethylene-Ran-Butylene)-B-Polystyrene-G-Maleic Anhydride undergoes rigorous quality testing to ensure batch-to-batch consistency and performance. Key parameters monitored include maleic anhydride grafting level, melt flow index, and block copolymer composition. Certificates of Analysis (COA) detailing specific lot specifications are available upon request to support your quality assurance protocols.

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, strong bases, and sources of heat. The product is typically stable under these conditions for extended periods.

Specification

Item	Specification
Appearance	White to off-white pellets or granules
Maleic Anhydride Content	0.5 - 2.0 % (w/w) (Typical)
Melt Flow Rate (MFR)	1 - 20 g/10 min (230°C/5 kg)
Polystyrene Content	20 - 40 % (w/w)
Density	0.90 - 0.95 g/cm³
Identification (IR)	Conforms to structure

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