Description

Poly(Styrene-Co-Maleic Acid), Partial Cyclohexyl/Isopropyl Ester, Cumene Terminated is a specialized functional copolymer designed to act as a versatile dispersant, emulsifier, and compatibilizer in advanced material formulations. Its unique structure, featuring both hydrophobic styrene and functionalized maleic acid ester groups, provides excellent interfacial activity and stability in complex systems. This polymer is essential for manufacturers in the coatings, inks, and advanced resin industries seeking to enhance pigment dispersion, film formation, and material compatibility.

Application

• Industrial Coatings & Inks: Acts as a high-performance dispersant and grinding aid for organic pigments and fillers, improving color strength, gloss, and stability in solvent-based systems.
• Pigment Concentrates & Masterbatches: Enhances the compatibility and dispersion of pigments in polymer matrices, preventing agglomeration and ensuring consistent color quality.
• Adhesives & Sealants: Functions as a tackifier and compatibilizer, improving adhesion to various substrates and the stability of adhesive formulations.
• Oilfield Chemicals: Utilized as a component in drilling fluid additives and demulsifiers due to its surfactant properties.
• Polymer Modification: Serves as a compatibilizer in polymer blends and alloys, improving the interfacial adhesion between otherwise immiscible polymers.
• Resin & Binder Systems: Modifies rheology and enhances the performance of alkyd, acrylic, and other specialty resins.

Basic Information

Item	Detail
Product Name	Poly(Styrene-Co-Maleic Acid), Partial Cyclohexyl/Isopropyl Ester, Cumene Terminated
CAS No.	160611-51-8
Molecular Formula	(C9H8·C4H2O4)n (Copolymer base)
Molecular Weight	Varies by grade (Typically 1,500 - 50,000 g/mol)
Synonyms	Styrene Maleic Anhydride Copolymer Partial Ester; SMA® Resin Ester; Cumene-Terminated Styrene Maleic Anhydride Partial Ester; Poly(styrene-alt-maleic acid) partial cyclohexyl/isopropyl ester; SMA Copolymer; SMA Ester; Dispersant SMA; SC-100 (trade name series); SC-200 (trade name series); SC-300 (trade name series)
EINECS	Contact for details

Quality Control

Our production of Poly(Styrene-Co-Maleic Acid) Partial Ester adheres to stringent quality management protocols. Each batch is characterized for critical parameters including acid value, esterification degree, molecular weight distribution, and viscosity to ensure batch-to-batch consistency and performance reliability. Certificates of Analysis (COA) documenting these specifications are provided with every shipment.

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 heat sources and open flame. Under these conditions, the product is stable for at least 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Yellow to amber flakes or solid
Acid Value	30 - 200 mg KOH/g (Grade Dependent)
Esterification Degree	Partial (Cyclohexyl/Isopropyl)
Molecular Weight (Mw)	1,500 - 50,000 (Grade Dependent)
Glass Transition Temperature (Tg)	Contact for details
Solubility	Soluble in common organic solvents (e.g., acetone, toluene, THF)
Identification (IR)	Conforms to structure

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