Description

4-[3-(Diethoxymethylsilylpropoxy)-2,2,6,6-Tetramethyl]Piperidine is a high-purity, functionalized hindered amine light stabilizer (HALS) and coupling agent, designed for advanced material science applications. This compound is critical for enhancing the durability and performance of polymers by providing superior resistance to photo-oxidative degradation and improving interfacial adhesion. It is an essential raw material for manufacturers in the plastics, coatings, adhesives, and specialty chemical industries seeking to develop high-performance, long-lasting products.

Application

• Polymer Stabilization: Acts as a highly effective HALS (Hindered Amine Light Stabilizer) in polyolefins (PP, PE), engineering plastics, and coatings to prevent UV-induced degradation, color change, and loss of mechanical properties.
• Surface Modification & Coupling Agent: Used to functionalize inorganic fillers (silica, glass fibers, minerals) and pigments, improving their dispersion and compatibility within polymer matrices for enhanced composite strength.
• Adhesive & Sealant Formulations: Enhances the weather resistance and long-term adhesion stability of silicone, polyurethane, and other high-performance sealants and adhesives.
• Advanced Coatings: Incorporated into automotive, industrial, and architectural coatings to provide long-term gloss retention, crack resistance, and protection against environmental weathering.
• Crosslinking Agent: Serves as a reactive intermediate in the synthesis of silane-modified polymers and crosslinked network materials.
• Fiber Treatment: Applied as a sizing or finishing agent for glass and carbon fibers to improve the fiber-matrix interface in reinforced composites.

Basic Information

Product Name	4-[3-(Diethoxymethylsilylpropoxy)-2,2,6,6-Tetramethyl]Piperidine
CAS No.	102089-33-8
Molecular Formula	C17H37NO3Si
Molecular Weight	331.57 g/mol
Synonyms	3-((2,2,6,6-Tetramethyl-4-piperidinyl)oxy)propyl(methyl)diethoxysilane; Methyl[3-((2,2,6,6-tetramethyl-4-piperidinyl)oxy)propyl]diethoxysilane; HALS-silane coupling agent; Light stabilizer 770-silane adduct; N-Methyl-3-(trimethoxysilyl)propyl-2,2,6,6-tetramethyl-4-piperidinyl ether (related variant); Silane A-171 HALS derivative; CAS 102089-33-8.
EINECS	Contact for details

Quality Control

Our production of 4-[3-(Diethoxymethylsilylpropoxy)-2,2,6,6-Tetramethyl]Piperidine adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including GC, HPLC, and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key specifications are provided with each shipment to guarantee compliance with your technical requirements.

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/59-77°F). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.455 - 1.465
Density (g/mL, 20°C)	0.95 - 0.98
Water Content (KF)	≤ 0.5%

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