Description

Polystyrene-Block-Poly(Ethylene-Ran-Butylene)-Block-Poly-Styrene-Graft-Maleic Anhydride is a reactive thermoplastic elastomer, widely recognized as a maleic anhydride-grafted SEBS triblock copolymer. This material is engineered to provide excellent compatibility and adhesion between non-polar polymers and polar substrates or fillers. It is a critical additive for formulators and compounders in the plastics, rubber, and coatings industries seeking to enhance material performance through improved interfacial bonding.

Application

• Polymer Compatibilizer: Acts as a key agent to improve the miscibility and interfacial adhesion in blends of immiscible polymers, such as polyolefins with polyamides (PA) or polyesters.
• Adhesion Promoter: Used in tie-layer adhesives, primers, and coatings to bond polyolefin-based materials (e.g., PP, PE) to metals, glass, or polar plastics.
• Filler Coupling Agent: Enhances the dispersion and bonding of polar fillers (e.g., glass fibers, minerals, wood flour) in non-polar polyolefin matrices, improving mechanical properties.
• Impact Modifier: Incorporated into engineering thermoplastics to increase toughness and impact resistance without sacrificing other key properties.
• Asphalt Modification: Used to modify asphalt binders, improving elasticity, high-temperature performance, and adhesion to aggregates.
• Hot Melt Adhesives: Serves as a base polymer to provide tack, flexibility, and enhanced adhesion to diverse substrates.

Basic Information

Product Name	Polystyrene-Block-Poly(Ethylene-Ran-Butylene)-Block-Poly-Styrene-Graft-Maleic Anhydride
CAS No.	113569-15-6
Molecular Formula	(C8H8)x·(C4H8)y·(C4H4O3)z
Molecular Weight	Variable (Typical Mw: 50,000 - 200,000 g/mol)
Synonyms	SEBS-g-MAH; Maleated SEBS; SEBS-g-Maleic Anhydride; Poly(styrene-block-(ethylene-ran-butylene)-block-styrene)-graft-maleic anhydride; SEBS-MA; SEBS graft copolymer with maleic anhydride; Kraton FG1901X (example trade name); Tuftec M1913 (example trade name)
EINECS	Contact for details

Quality Control

Our SEBS-g-MAH products undergo rigorous quality testing to ensure batch-to-batch consistency and performance. Key parameters such as maleic anhydride grafting level, melt flow index, and styrene content are strictly monitored. Certificates of Analysis (COA) detailing specific lot specifications are available upon request, supporting compliance with relevant industry and customer-specific 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). This material is hygroscopic (moisture-sensitive); prolonged exposure to atmospheric humidity should be avoided to prevent potential property degradation.

Specification

Item	Specification
Appearance	White to off-white granules/pellets
Maleic Anhydride Content	0.5 - 2.0 % (Typical)
Melt Flow Rate (230°C/5 kg)	1 - 30 g/10 min
Styrene Content	20 - 40 %
Ash Content	< 0.5 %
Volatile Matter	< 0.5 %

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