Description

Siloxanes And Silicones, Di-Me, (Trimethoxysilyl)Oxy-Terminated is a specialized organosilicon compound featuring a reactive trimethoxysilyloxy terminal group. This unique structure makes it a valuable reactive intermediate and cross-linking agent in the synthesis of advanced silicone polymers and hybrid materials. It is essential for manufacturers requiring precise control over polymer architecture and surface modification. Key industries that utilize this chemical include adhesives & sealants, coatings, and specialty elastomers.

Application

• As a key cross-linking agent in moisture-curable silicone sealants and adhesives.
• As a reactive intermediate in the synthesis of custom silicone resins and polymers.
• For surface modification of inorganic materials like silica, glass, and metals to improve adhesion and compatibility.
• In the formulation of hybrid organic-inorganic coatings (ORMOSILs) for enhanced durability and chemical resistance.
• As a chain extender or endblocker in the production of polydimethylsiloxane (PDMS) fluids with specific terminal functionality.
• In the manufacture of release coatings and pressure-sensitive adhesives where controlled cross-linking is required.

Basic Information

Product Name	Siloxanes And Silicones, Di-Me, (Trimethoxysilyl)Oxy-Terminated
CAS No.	142982-20-5
Molecular Formula	CnH2n+1O3Si (Oligomeric mixture)
Molecular Weight	Varies (Oligomeric mixture)
Synonyms	α-(Trimethoxysilyl)-ω-methylpoly(dimethylsiloxane); Trimethoxysilyl Terminated Polydimethylsiloxane; Poly(dimethylsiloxane), (trimethoxysilyl)oxy-terminated; PDMS, trimethoxysilyl terminated; Dimethylsiloxane-(trimethoxysiloxy) copolymer; Silane, reaction products with dimethylsiloxane; Siloxanes and silicones, di-Me, Me 3-(trimethoxysilyl)propyl, hydroxy-terminated, reaction products with hexamethyldisiloxane (related)
EINECS	Contact for details

Quality Control

Our production of Siloxanes And Silicones, Di-Me, (Trimethoxysilyl)Oxy-Terminated adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed for critical parameters including viscosity, reactive group content (methoxy value), and molecular weight distribution. Certificates of Analysis (COA) documenting these specifications are provided with every shipment to support your quality assurance processes.

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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under a dry atmosphere (e.g., nitrogen blanket) after opening to prevent hydrolysis and premature polymerization.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Viscosity (25°C)	Contact for details
Methoxy Content (Titration)	Contact for details
Specific Gravity (25°C)	Contact for details
Water Content (KF)	< 0.1%

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