Description

N,N'-Bis(2,2,6,6-Tetramethyl-4-Piperidinyl)-1,3-Benzenedicarboxamide is a high-performance hindered amine light stabilizer (HALS) and polymer additive. This compound is critical for protecting polymers and coatings from degradation caused by UV radiation and thermal oxidation, thereby significantly extending product lifespan. It is an essential material for manufacturers in the plastics, automotive, packaging, and construction industries seeking to enhance the durability and weatherability of their products.

Application

• Polymer Stabilization: Primary function as a highly effective hindered amine light stabilizer (HALS) in polyolefins (PP, PE), engineering plastics, and synthetic fibers.
• Automotive Components: Protection of interior and exterior plastic parts, bumpers, dashboards, and trim from UV-induced fading, cracking, and loss of mechanical properties.
• Industrial and Agricultural Films: Extending the service life of greenhouse films, mulch films, and protective packaging by preventing photo-oxidative degradation.
• Coatings and Paints: Used in automotive, industrial, and wood coatings to maintain gloss, prevent chalking, and retain color integrity.
• Adhesives and Sealants: Enhancing the long-term performance and resistance to environmental stress cracking in adhesive formulations.
• Masterbatch Production: A key active component in the manufacture of UV-stabilizer and antioxidant concentrate masterbatches for easy compounding.

Basic Information

Product Name	N,N'-Bis(2,2,6,6-Tetramethyl-4-Piperidinyl)-1,3-Benzenedicarboxamide
CAS No.	42774-15-2
Molecular Formula	C28H46N4O2
Molecular Weight	470.70 g/mol
Synonyms	1,3-Benzenedicarboxamide, N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-; Bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate (related compound, often confused); HALS 770; Light Stabilizer 770; UV-770; Chimassorb 2020 (similar commercial blend); Tinuvin 770; Lowilite 77; Benzenedicarboxamide derivative; Bis(2,2,6,6-tetramethyl-4-piperidyl) isophthalamide
EINECS	255-965-5

Quality Control

Our production of N,N'-Bis(2,2,6,6-Tetramethyl-4-Piperidinyl)-1,3-Benzenedicarboxamide adheres to stringent quality management systems to ensure batch-to-batch consistency and high purity. The material is manufactured and tested to meet relevant industry specifications for polymer additives. Comprehensive quality control includes identity confirmation, purity assay, and impurity profiling. Certificates of Analysis (COA) detailing all test results 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, well-ventilated area at room temperature (15-25°C). Keep away from heat, open flames, and incompatible materials. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	155 - 165 °C
Loss on Drying	≤ 0.5%
Ash Content	≤ 0.1%
Transmittance (425nm)	≥ 95%
Transmittance (500nm)	≥ 97%

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