Description

4-(Triethoxysilylpropoxy)-2,2,6,6-Tetramethylpiperidine n-Oxide, Tech-85 is a bifunctional hindered amine light stabilizer (HALS) featuring a reactive triethoxysilyl group. This compound is engineered to provide superior long-term thermal and UV stability to polymer matrices by chemically grafting onto substrates, preventing stabilizer migration and loss. It is a critical additive for manufacturers of high-performance coatings, adhesives, and engineering plastics requiring durable protection against environmental degradation.

Application

• Polymer Stabilization: Primary use as a graftable HALS in polyolefins (PP, PE), polyurethanes, and engineering plastics to prevent photo-oxidative degradation.
• High-Performance Coatings: Key additive in automotive clear coats, industrial maintenance paints, and coil coatings for enhanced weatherability and gloss retention.
• Adhesives & Sealants: Imparts long-term stability to silicone, polyurethane, and acrylic-based formulations exposed to sunlight and heat.
• Fiber-Reinforced Composites: Used in glass or carbon fiber composites to protect the polymer resin matrix from UV-induced embrittlement.
• Construction Materials: Stabilizer for PVC profiles, geomembranes, and other polymeric building materials.
• Automotive Components: Protection for interior and exterior plastic parts against fading and cracking.

Basic Information

Item	Details
Product Name	4-(Triethoxysilylpropoxy)-2,2,6,6-Tetramethylpiperidine n-Oxide, Tech-85
CAS No.	913375-27-6
Molecular Formula	C20H44NO5Si
Molecular Weight	418.66 g/mol
Synonyms	4-(3-(Triethoxysilyl)propoxy)-2,2,6,6-tetramethylpiperidine-1-oxyl; Graftable HALS; Silane-coupled nitroxyl radical; NOR HALS; Reactive HALS; 2,2,6,6-Tetramethyl-4-(3-triethoxysilylpropoxy)piperidine-1-oxyl; Tech-85 HALS
EINECS	Contact for details

Quality Control

Our 4-(Triethoxysilylpropoxy)-2,2,6,6-Tetramethylpiperidine n-Oxide, Tech-85 is manufactured under a strict quality management system. Each batch is tested to ensure it meets the defined technical specifications for purity and performance. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is provided with every shipment to guarantee consistency and reliability for your formulations.

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). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to minimize moisture uptake and maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to orange viscous liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 85.0%
Active Nitroxyl Content	Contact for details
Ethoxy Content	Contact for details
Volatile Matter	≤ 2.0%

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