Description

Methacryloxypropyl Terminated Polydimethylsiloxane is a reactive silicone macromonomer featuring a polydimethylsiloxane (PDMS) backbone capped with methacrylate functional groups. This unique hybrid structure combines the low surface energy, flexibility, and thermal stability of silicones with the UV-curability and copolymerization potential of methacrylates. It is a critical raw material for formulators and polymer scientists seeking to modify surface properties and enhance material performance. Key industries that utilize this advanced material include UV-curable coatings, pressure-sensitive adhesives, release liners, and high-performance elastomers.

Application

• UV-Curable Release Coatings: Serves as a key component in silicone release liners for labels and tapes, providing excellent, controllable release force.
• Pressure-Sensitive Adhesives (PSAs): Incorporated as an additive to improve wetting, flow, and surface slip properties of acrylic and rubber-based adhesives.
• Surface Modification Additive: Used as a migratory additive in coatings, inks, and plastics to impart permanent or temporary slip, mar resistance, and water repellency.
• Silicone Hybrid Resins & Elastomers: Acts as a reactive modifier or crosslinker in acrylate and methacrylate systems to create flexible, weatherable, and impact-resistant polymers.
• Fiber & Textile Treatment: Applied to confer soft hand feel, durable water repellency (DWR), and fiber lubrication.
• Mold Making & Casting: Utilized in formulations for UV-curable molds or as a component to create low-surface-energy, flexible mold materials.

Basic Information

Product Name	Methacryloxypropyl Terminated Polydimethylsiloxane
CAS No.	58130-03-3
Molecular Formula	CnH2n+1O3Si(n/2) (Variable, based on PDMS chain length)
Molecular Weight	Variable (Typically 500 - 10,000 g/mol). Contact for details.
Synonyms	Methacryloxypropyl-Terminated PDMS; Methacryloxypropyl Polydimethylsiloxane; Methacrylated Silicone; Silicone Methacrylate; PDMS-DMA; 3-Methacryloxypropyl Terminated Polydimethylsiloxane; Poly(dimethylsiloxane), (3-methacryloxypropyl) terminated; Reactive Silicone Macromonomer
EINECS	Contact for details.

Quality Control

Our Methacryloxypropyl Terminated Polydimethylsiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including verification of methacrylate functionality, silicone content, viscosity, and purity. Certificates of Analysis (COA) detailing key specifications are available for every shipment upon request, providing full traceability and quality assurance for your formulation process.

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). To prevent premature polymerization, avoid contamination and exposure to heat, free radicals, or UV light sources. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Specification available upon request (Grade dependent)
Methacrylate Content	Specification available upon request
Specific Gravity (25°C)	~0.97 - 1.00
Refractive Index (n20D)	~1.405 - 1.415
Purity (HPLC/GPC)	≥ 95% (Grade dependent)
Water Content (KF)	≤ 0.1%

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