Description

Light Stabilizer 622 is a high-performance hindered amine light stabilizer (HALS) widely used to protect polymers from photo-oxidative degradation. Its primary function is to scavenge free radicals generated by UV exposure, thereby significantly extending the service life and maintaining the mechanical properties and color of plastic materials. This additive is essential for manufacturers in the plastics industry seeking to enhance the durability and weatherability of their products for demanding outdoor and long-term applications.

Application

Light Stabilizer 622 is a versatile additive designed to protect a wide range of polymeric materials from UV-induced degradation. Its key applications include:

• Polyolefin Stabilization: Critical for protecting polypropylene (PP) and polyethylene (PE) fibers, tapes, and molded articles used in agriculture, automotive, and construction.
• Engineering Plastics: Enhances the weatherability of polyamides (PA) and other engineering plastics used in automotive components and electrical enclosures.
• Automotive Plastics: Protects interior and exterior plastic parts, such as bumpers, dashboards, and trims, from fading and embrittlement.
• Agricultural Films: Extends the functional lifespan of greenhouse films, mulch films, and silage covers by preventing UV breakdown.
• Synthetic Fibers: Used in the production of UV-stable polyolefin fibers for outdoor textiles, geotextiles, and artificial turf.
• Paints and Coatings: Incorporated into specific coating formulations to improve gloss retention and prevent chalking.

Basic Information

Product Name	Light Stabilizer 622
CAS No.	65447-77-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate; Tinuvin 622; Chimassorb 944; HALS 622; LS 622; Hindered Amine Light Stabilizer 622; Poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidyl)imino]] (Note: This is a common polymeric HALS often associated with this CAS/application space); UV Stabilizer 622
EINECS	Contact for details

Quality Control

Our Light Stabilizer 622 is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent performance, including assay, melting point, and color index. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications to support your quality assurance protocols. Our production adheres to industry best practices, ensuring reliability for your critical formulations.

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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	White or light yellow powder or granules
Melting Point	55 - 140 °C (Typical for polymeric HALS grades)
Assay (HPLC)	≥ 98.0%
Volatile Content	≤ 0.5%
Ash Content	≤ 0.1%
Color (Gardner)	≤ 3

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