Description

4-[3-(3,5-Di-T-Butyl-4-Hydroxyphenyl)Propionyloxy]-1-[2-[3-(3,5-Di-T-Butyl-4-Hydroxyphenyl)Propionyloxy]Ethyl-2,2,6,6-Tetramethyl] Piperidine is a high-performance, hindered amine light stabilizer (HALS) designed to provide exceptional long-term thermal and UV stability to polymeric materials. Its molecular structure, featuring two phenolic antioxidant moieties linked to a piperidine core, offers a synergistic mechanism for superior protection against oxidative degradation. This additive is essential for formulators and manufacturers in the plastics, coatings, and synthetic fiber industries seeking to enhance product durability and lifespan under demanding environmental conditions.

Application

This advanced HALS compound is engineered for demanding applications where long-term stability is critical. Its primary uses include:

• Polyolefin Stabilization: Providing critical UV and thermal protection for polyethylene (PE) and polypropylene (PP) used in automotive parts, agricultural films, and outdoor furniture.
• Engineering Plastics: Enhancing the weatherability and color retention of high-performance polymers like polyamides (PA) and thermoplastic polyurethanes (TPU).
• Industrial and Automotive Coatings: Protecting paint, clear coats, and other coating systems from photo-oxidation, chalking, and gloss loss.
• Adhesives and Sealants: Extending the service life of polymeric adhesives and sealants exposed to sunlight and heat.
• Synthetic Fibers: Improving the resistance of polyolefin and polyamide fibers to degradation from sunlight exposure.
• Masterbatch Production: Serving as a key active component in concentrated additive formulations for easy dispersion in final polymer processing.

Basic Information

Item	Information
Product Name	4-[3-(3,5-Di-T-Butyl-4-Hydroxyphenyl)Propionyloxy]-1-[2-[3-(3,5-Di-T-Butyl-4-Hydroxyphenyl)Propionyloxy]Ethyl-2,2,6,6-Tetramethyl] Piperidine
CAS No.	73754-27-5
Molecular Formula	C48H74N2O6
Molecular Weight	775.12 g/mol
Synonyms	Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) [[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]butylmalonate; Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate derivative; Light Stabilizer 770; HALS 770; UV-770; Tinuvin 770; Lowilite 77; Chimassorb 944 (related class); Bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate analog
EINECS	Contact for details

Quality Control

Our production of this HALS compound adheres to stringent quality management systems to ensure batch-to-batch consistency and performance reliability. Certificates of Analysis (COA) documenting purity, melting point, and specific absorbance are provided with each shipment. Our quality protocols are designed to meet the exacting standards of the global polymer additive market, supporting compliance with relevant industry and safety regulations.

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 easily oxidized and should be kept under an inert atmosphere (e.g., nitrogen) after opening to maintain efficacy. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	80 - 85 °C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%
Transmittance (425 nm)	≥ 95.0%
Transmittance (500 nm)	≥ 97.0%

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