Styrene Maleic Anhydride Copolymer with CAS 9011-13-6

CAS: 9011-13-6
Molecular Formula: C36H30O9X2
Molecular Weight: 606.62
Product name: STYRENE MALEIC ANHYDRIDE COPOLYMER

Synonyms: sma2000a; sma2625a; sma3000; sma3000a; sma4000a; smac-a; styrene/maleic; styreneandmaleicanhydride,alternateco-polymer; styrene-maleicanhydridepolymer; styrenemaleicanhydrideresin; styrene-maleicanhydrideresin; styromal; styromal30; styromal5; SMA/STYRENE MALEIC ANHYDRIDE COPOLYMER

What is Styrene Maleic Anhydride Copolymer with CAS 9011-13-6？

Styrene Maleic Anhydride Copolymer(CAS 9011-13-6) is a kind of light yellow powder. Because of its hydrophobic styrene and hydrophilic maleic anhydride segments, low molecular weight SMA can be used as a polymer surfactant and can be used in water-soluble ink coatings.

Specification

APPEARANCE	Light yellow powder
ACID VALUE	460-520 mg KOH/
MELT FLOW RATE (200℃, 5kg)	≥60 g/10mi

Applications of Styrene Maleic Anhydride Copolymer

1. Engineering Plastics Compatibilizer

Compatibilizer SMA plays a crucial role in improving interfacial adhesion between dissimilar polymers such as ABS, PA, and PET.

Enhances mechanical strength and impact resistance.
Improves dispersion and bonding in polymer blends.
Commonly used in nylon (PA)/ABS or PET/PS blends.

This makes SMA STYRENE MALEIC ANHYDRIDE COPOLYMER a cost-effective and efficient compatibilizer in high-performance polymer formulations.

2. Coatings and Adhesives

In coatings and adhesives, SMA provides:

Excellent adhesion to metal, glass, and plastic substrates.
Good film-forming properties and chemical resistance.
Stability under heat and solvent exposure.

It’s often used as a binder, dispersant, and film-forming agent in waterborne and solvent-based formulations.

3. Paper and Textile Sizing Agent

SMA can be used as a surface sizing agent in the paper and textile industries, improving water resistance and surface strength. Its anhydride groups can react with hydroxyl-containing materials for better performance.

4. Lubricant and Emulsion Dispersant

The polar anhydride groups allow SMA to act as an effective dispersant in lubricant additives, pigment dispersions, and waterborne emulsions, improving product stability and compatibility.

5. Electronic and Automotive Applications

Due to its high thermal stability and film-forming ability, SMA is also used in electronic encapsulation materials and automotive coatings that require durability and resistance to environmental stress.

STYRENE MALEIC ANHYDRIDE COPOLYMER with CAS 9011-13-6-Application

Why Choose Us as Your SMA Supplier?

As one of the reliable styrene maleic anhydride copolymer suppliers, we provide:

High-purity SMA grades for plastics, coatings, and adhesives.
Stable product quality with strict control on acid value and molecular weight.
Competitive prices for bulk orders (Styrene Maleic Anhydride Buy).
Technical support for formulation and processing applications.

Unilong produces SMA products with different molecular weights and St: MA.Our SMA are divided into high molecular weight and low molecular weight series and customers can choose according to their own needs and production processes.

Price advantage, product quality can also be compared to large companies such as Polyscope.The product indicators (such as glass transition temperature, clarity, transparency) are relatively good and stable.

We can also customize SMA resin based on your project needs, providing solutions for compatibilizer SMA, coating binder, or dispersion aid applications.