Description

Stearyl Methacrylate is a long-chain alkyl methacrylate monomer prized for its ability to impart exceptional hydrophobicity, flexibility, and low-temperature properties to polymer systems. This high molecular weight monomer is a critical building block for creating advanced materials with tailored performance characteristics. It is essential for formulators and polymer chemists in the coatings, adhesives, and specialty plastics industries seeking to enhance product durability and functionality.

Application

• Coatings & Paints: Used as a co-monomer to develop high-performance industrial, marine, and architectural coatings with improved water resistance, flexibility, and gloss retention.
• Adhesives & Sealants: Imparts internal plasticization, enhancing low-temperature flexibility and adhesion to low-energy surfaces in pressure-sensitive adhesives (PSAs) and sealants.
• Lubricant & Fuel Additives: Serves as a precursor for viscosity index improvers and pour-point depressants, crucial for engine oils and industrial lubricants.
• Textile & Leather Finishes: Employed in polymer emulsions for fabric and leather treatments to provide durable water repellency (DWR) and soft hand feel.
• Printing Inks: Modifies resin properties in inks to improve pigment wetting, rub resistance, and substrate adhesion.
• Personal Care Polymers: Used in the synthesis of film-forming agents and fixative polymers for hairsprays, sunscreens, and nail polish.
• Optical Polymers: Contributes to the formulation of impact-resistant lenses and optical films due to its compatibility and clarity.
• Crosslinking Agent: Acts as a reactive monomer in radiation-curable (UV/EB) systems and as a crosslinker for specialty elastomers.

Basic Information

Item	Details
Product Name	Stearyl Methacrylate
CAS No.	32360-05-7
Molecular Formula	C22H42O2
Molecular Weight	338.57 g/mol
Synonyms	Octadecyl methacrylate; Methacrylic acid, octadecyl ester; SMA; ODA; n-Octadecyl methacrylate; Stearyl 2-methyl-2-propenoate; 1-Octadecyl methacrylate; Lauryl methacrylate (C18); Long-chain alkyl methacrylate monomer
EINECS	251-005-4

Quality Control

Our Stearyl Methacrylate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including assay, purity, and impurity profile analysis, to ensure it meets stringent specifications for polymerization-grade monomers. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and consistency for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials such as strong acids and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Color (APHA)	≤ 50
Acidity (as Methacrylic Acid)	≤ 0.5%
Water Content (KF)	≤ 0.1%
Inhibitor (MEHQ)	50 - 100 ppm

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