Description

3-Methacryloxypropylpentamethyldisiloxane is a bifunctional organosilicon monomer featuring both a methacrylate group and a pentamethyldisiloxane moiety. This unique structure makes it a critical intermediate for synthesizing silicone-modified polymers, imparting enhanced properties like hydrophobicity, flexibility, and thermal stability. It is essential for R&D chemists and manufacturers in the advanced materials, coatings, and specialty chemical sectors seeking to create high-performance hybrid organic-inorganic systems.

Application

• Silicone-Modified Acrylic Resins: A key monomer for introducing silicone segments into acrylic polymer backbones, improving weatherability, water repellency, and surface properties in coatings and paints.
• UV-Curable Systems: Used as a reactive diluent and crosslinker in UV-curable inks, coatings, and adhesives, contributing to fast cure rates and enhanced film flexibility.
• Pressure-Sensitive Adhesives (PSAs): Imparts low surface energy and controlled release characteristics in silicone-modified acrylic PSAs for labels and tapes.
• Fiber Optic Coatings: Serves as a precursor for coatings that protect optical fibers, offering excellent environmental resistance and mechanical protection.
• Release Liners: Used in the synthesis of silicone release coatings for papers and films in the label and graphic arts industries.
• Hydrophobic Additives: Incorporated into various polymer matrices to create hydrophobic surfaces for textiles, construction materials, and electronic components.

Basic Information

Item	Detail
Product Name	3-Methacryloxypropylpentamethyldisiloxane
CAS No.	18151-85-4
Molecular Formula	C15H32O4Si2
Molecular Weight	332.59 g/mol
Synonyms	3-(Methacryloyloxy)propylpentamethyldisiloxane; Methacryloxypropylpentamethyldisiloxane; γ-Methacryloxypropylpentamethyldisiloxane; MEMO-PDMS; (3-Methacryloxypropyl)(pentamethyl)disiloxane; Silane, [3-[(2-methyl-1-oxo-2-propen-1-yl)oxy]propyl]pentamethyl-; Disiloxane, 1-[3-(methacryloyloxy)propyl]-1,1,3,3,3-pentamethyl-; SIB1830.0 (Gelest)
EINECS	Contact for details

Quality Control

Our production of 3-Methacryloxypropylpentamethyldisiloxane adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including GC, NMR, and FTIR, to ensure high purity and consistent performance. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at temperatures between 15-25°C (59-77°F). Due to its light-sensitive and easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Refractive Index (n20D)	1.425 - 1.435
Density (20°C)	0.92 - 0.96 g/mL

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