Description

Poly(Diethoxysiloxane) is a versatile organosilicon polymer characterized by its reactive ethoxy groups. This compound is a crucial intermediate in the synthesis of silicone resins and serves as a coupling agent and surface modifier. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producers of specialty chemicals and advanced materials seeking to enhance product performance and durability.

Application

• Silicone Resin Precursor: A key intermediate in the manufacture of heat-resistant and weatherable silicone resins for protective coatings.
• Surface Treatment Agent: Used to modify inorganic surfaces like glass, silica, and metals to improve adhesion and compatibility with organic polymers.
• Crosslinking Agent: Functions as a crosslinker in room-temperature vulcanizing (RTV) silicone rubber formulations.
• Adhesive & Sealant Formulation: Imparts improved flexibility, weather resistance, and adhesion in high-performance sealants and adhesives.
• Filler Treatment: Enhances the dispersion and bonding of mineral fillers within polymer matrices, improving composite mechanical properties.
• Hydrophobic Coatings: Serves as a base material for creating water-repellent surface treatments on construction materials and textiles.

Basic Information

Product Name	Poly(Diethoxysiloxane)
CAS No.	68412-37-3
Molecular Formula	(C2H5O)3Si[OSi(C2H5O)2]nOSi(OC2H5)3
Molecular Weight	Variable (Oligomer)
Synonyms	Poly(diethoxy siloxane); Diethoxypolysiloxane; Ethoxysiloxane homopolymer; Poly(diethoxysiloxane) homopolymer; Silane, diethoxy-, homopolymer; Ethyl polysilicate (related); Poly(diethyl silicate); Tetraethyl orthosilicate condensate
EINECS	Contact for details

Quality Control

Our Poly(Diethoxysiloxane) is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent composition, viscosity, and reactivity. Certificates of Analysis (COA) detailing key parameters such as ethoxy content, silicon content, and residual solvents 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). This material is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent hydrolysis and degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Ethoxy Content	Contact for details
Silicon Content	Contact for details
Viscosity (25°C)	Contact for details
Specific Gravity (25°C)	Contact for details
Refractive Index (25°C)	Contact for details

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