Description

Poly(Octadecyl Methacrylate) is a high molecular weight polymer derived from the esterification of methacrylic acid with octadecanol. This long-chain alkyl methacrylate polymer is valued for its excellent hydrophobic properties, low surface energy, and ability to modify the physical characteristics of materials. It serves as a crucial performance additive and rheology modifier in advanced industrial formulations. Key industries that utilize this specialty polymer include coatings, plastics, adhesives, and personal care.

Application

• As a rheology modifier and thickener in solvent-based coatings, inks, and adhesives.
• An internal or external lubricant and processing aid for polyolefin and engineering plastic compounds to improve flow and mold release.
• A key component in the formulation of hydrophobic and water-repellent surface treatments for textiles, paper, and leather.
• Used as a viscosity index improver in synthetic lubricants and greases.
• An additive in personal care products, such as hair sprays and sunscreens, to provide film-forming and water-resistant properties.
• Employed in the production of pressure-sensitive adhesives (PSAs) to adjust tack and peel strength.
• As a compatibilizer and dispersing agent in pigment masterbatches and composite materials.

Basic Information

Product Name	Poly(Octadecyl Methacrylate)
CAS No.	25639-21-8
Molecular Formula	(C22H42O2)n
Molecular Weight	~ 10,000 - 100,000 g/mol (Typical)
Synonyms	Poly(stearyl methacrylate); PSMA; Octadecyl methacrylate homopolymer; Poly(ODMA); Stearyl methacrylate polymer; n-Octadecyl methacrylate polymer; Polymethacrylic acid octadecyl ester; Lauryl methacrylate polymer (related); Long-chain alkyl methacrylate polymer
EINECS	Contact for details

Quality Control

Our Poly(Octadecyl Methacrylate) is manufactured under a strict quality management system. Each batch undergoes rigorous testing to ensure consistent performance, including analysis of molecular weight distribution, residual monomer content, and key physical properties. Certificates of Analysis (COA) detailing lot-specific results 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 flames. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	White to off-white flakes or powder
Identification (IR)	Conforms to structure
Assay (as Polymer)	> 98.0 %
Residual Monomer	< 0.5 %
Molecular Weight (Mw)	10,000 - 100,000 (Customizable)
Glass Transition Temp (Tg)	< -20 °C
Melting Point	30 - 50 °C

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