Description

Styrene Maleic Anhydride Copolymer is a synthetic polymer formed from styrene and maleic anhydride monomers, known for its excellent thermal stability and versatile reactivity. This copolymer is valued for its ability to act as a compatibilizer, emulsifier, and rheology modifier in various industrial formulations. It is a critical material for manufacturers in the coatings, adhesives, plastics, and personal care industries seeking to enhance product performance and processability.

Application

• Coatings & Inks: Used as a rheology modifier and dispersing agent to improve flow, leveling, and pigment stability in water-based and solvent-based systems.
• Adhesives & Sealants: Functions as a tackifier and compatibilizer to enhance adhesion strength, cohesion, and thermal resistance.
• Plastics Modification: Acts as a compatibilizer and impact modifier in polymer blends and composites, particularly for engineering plastics.
• Personal Care & Cosmetics: Employed as a film-forming agent, emulsifier, and stabilizer in hair sprays, styling gels, and skin care products.
• Paper & Textile Sizing: Serves as a binder and surface sizing agent to improve strength, printability, and water resistance.
• Oilfield Chemicals: Utilized as a fluid loss additive and viscosity control agent in drilling mud formulations.
• Pharmaceutical Excipients: Can be used in controlled-release drug delivery systems due to its pH-dependent solubility and film-forming properties.

Basic Information

Product Name	Styrene Maleic Anhydride Copolymer
CAS No.	9011-13-6
Molecular Formula	(C8H8·C4H2O3)x
Molecular Weight	Varies (Polymer)
Synonyms	SMA copolymer; Maleic Anhydride-Styrene Copolymer; Styrene/Maleic Anhydride Resin; Poly(Styrene-alt-Maleic Anhydride); SMA Resin; SMA; Styrol Maleic Anhydride Copolymer; Scripset® (Trade Name); SMA® (Trade Name)
EINECS	Contact for details

Quality Control

Our Styrene Maleic Anhydride Copolymer is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key parameters including acid value, molecular weight distribution, viscosity, and residual monomer content to ensure consistent performance and reliable supply. Certificates of Analysis (COA) 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 acids and organic solvents. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Acid Value	Contact for details
Styrene:Maleic Anhydride Ratio	Contact for details
Molecular Weight (Mw)	Contact for details
Glass Transition Temperature (Tg)	Contact for details
Moisture Content	< 1.0%
Residual Solvent	Meets ICH guidelines

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