Description

Siloxanes And Silicones, Me Methoxy Polymers With Me Silsesquioxanes, Methoxy-Terminated is a specialized organosilicon compound featuring a hybrid polymeric structure of methoxy-terminated polydimethylsiloxane (PDMS) and methyl silsesquioxane (Me-SSQ) units. This unique architecture provides exceptional compatibility, surface modification capabilities, and thermal stability, making it a valuable reactive intermediate and performance additive. It is primarily sought by formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced material science for creating high-performance composites and release agents.

Application

• Reactive Modifier for Silicone Resins & Elastomers: Acts as a crosslinking agent or chain extender to enhance mechanical properties, adhesion, and thermal stability in silicone-based formulations.
• Surface Treatment & Coupling Agent: Improves the interfacial adhesion between organic polymers and inorganic fillers (like silica, glass, or metals) in composite materials.
• High-Performance Release Coatings: Used to formulate durable, heat-stable release liners for pressure-sensitive adhesives and industrial molding processes.
• Additive for Coatings & Inks: Imparts mar resistance, slip, and improved flow and leveling properties to industrial and protective coatings.
• Precursor for Hybrid Organic-Inorganic Materials: Serves as a building block in sol-gel chemistry for creating advanced ceramics, optical materials, and low-k dielectrics.
• Water Repellent & Protective Agent: Used to create hydrophobic surfaces on construction materials, textiles, and electronic components.

Basic Information

Item	Detail
Product Name	Siloxanes And Silicones, Me Methoxy Polymers With Me Silsesquioxanes, Methoxy-Terminated
CAS No.	181186-37-8
Molecular Formula	Typically represented as (C2H6OSi)x(CH3SiO1.5)y; specific ratio varies by grade.
Molecular Weight	Variable, depending on the polymer chain length and Me-SSQ content.
Synonyms	Methoxy-Terminated PDMS-Me Silsesquioxane Copolymer; Methoxy-Functional Polydimethylsiloxane Methylsilsesquioxane; Methyl Methoxy Siloxane-Silsesquioxane Polymer; MeSiO1.5-PDMS(OMe) Copolymer; Reactive Methoxy Silicone Fluid; Methoxy Siloxane Resin; Methyl Silsesquioxane Modified Methoxy Silicone Oil
EINECS	Contact for details

Quality Control

Our production of Methoxy-Terminated PDMS-Me Silsesquioxane Copolymer adheres to strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as methoxy content, viscosity, molecular weight distribution, and purity. A comprehensive Certificate of Analysis (COA) detailing these specifications is provided with every shipment to guarantee product integrity and support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature reaction. Isolate from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow viscous liquid
Identification (IR)	Complies with reference spectrum
Viscosity @ 25°C	100 - 5000 cSt (Grade dependent)
Methoxy Content (CH3O-)	5 - 15 % (w/w)
Non-Volatile Matter	> 95 %
Specific Gravity @ 25°C	0.95 - 1.05
Refractive Index @ 25°C	1.400 - 1.420

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