Description

Styrene-Lmethyl Methacrylate-Ethyl Acrylate-Hydroxyethyl Methacrylate Copolymer is a versatile multi-component acrylic copolymer engineered for high-performance applications requiring tailored film formation, adhesion, and durability. This polymer is critical for formulators seeking to balance hardness, flexibility, and chemical resistance in advanced coating systems. It is primarily needed by manufacturers in the paints & coatings, industrial adhesives, and specialty ink sectors, where its unique monomer composition provides exceptional binding and protective properties.

Application

• High-Performance Industrial Coatings: Used as a key film-forming agent in metal, wood, and plastic coatings for enhanced weatherability and gloss retention.
• Automotive Refinish & OEM Paints: Provides excellent adhesion to various substrates and contributes to the durability and aesthetic finish of automotive paints.
• Packaging Inks and Overprint Varnishes: Imparts scratch resistance, flexibility, and high gloss in inks and varnishes for flexible packaging and labels.
• Industrial & Construction Adhesives: Serves as a base polymer in pressure-sensitive and structural adhesives, offering strong bonding and cohesion.
• Textile & Leather Finishes: Applied as a coating binder to provide water resistance, durability, and a soft hand feel to treated fabrics and leathers.
• Specialty Resins and Modifiers: Acts as a performance additive or modifier in other polymer systems to improve specific properties like toughness or compatibility.

Basic Information

Product Name	Styrene-Lmethyl Methacrylate-Ethyl Acrylate-Hydroxyethyl Methacrylate Copolymer
CAS No.	29226-59-3
Molecular Formula	(C8H8·C5H8O2·C5H8O2·C6H10O3)x
Molecular Weight	Varies (Polymer)
Synonyms	Styrene/MMA/EA/HEMA Copolymer; Acrylic-Styrene Copolymer; SMA-HEMA Copolymer; Styrene Methyl Methacrylate Ethyl Acrylate Hydroxyethyl Methacrylate Tetrapolymer; Poly(Styrene-co-Methyl Methacrylate-co-Ethyl Acrylate-co-Hydroxyethyl Methacrylate); 2-Propenoic acid, 2-methyl-, methyl ester, polymer with ethenylbenzene, ethyl 2-propenoate and 2-hydroxyethyl 2-methyl-2-propenoate; Acrylic Polyol Resin; Multi-functional Acrylic Resin
EINECS	Contact for details

Quality Control

Our copolymer products undergo rigorous quality testing to ensure batch-to-batch consistency and compliance with industry standards. Key parameters such as monomer content, molecular weight distribution, viscosity, and hydroxyl value are strictly monitored. Certificates of Analysis (COA) documenting these 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 heat sources and open flame. Under these conditions, the product is typically stable for 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Colorless to pale yellow pellets or solution
Identification (IR)	Complies
Solid Content	Contact for details
Viscosity (Brookfield)	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 5.0
Glass Transition Temperature (Tg)	Contact for details
Residual Monomers (GC)	< 0.5%

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