Description

3,3'-(2-Hydroxypropane-1,3-Diyl)Bis[2,2,7,7,9,9-Hexamethyl-1-Oxa-3,8-Diazaspiro[4.5]Decan-4-One] is a sophisticated, high-purity organic compound with a complex spirocyclic structure, serving as a critical advanced intermediate in fine chemical synthesis. Its value lies in its role as a high-performance light stabilizer and UV absorber, designed to protect sensitive materials from photodegradation. This product is essential for manufacturers in the polymer, coatings, and specialty chemical industries who require reliable, high-grade additives to enhance the durability and longevity of their formulations.

Application

• Polymer Additive: Primary application as a high-efficiency hindered amine light stabilizer (HALS) in polyolefins (PP, PE), engineering plastics, and synthetic fibers to prevent UV-induced degradation, color fading, and loss of mechanical properties.
• Coatings and Paints: Used in automotive, industrial, and architectural coatings to significantly improve weatherability, gloss retention, and prevent chalking and cracking.
• Adhesives and Sealants: Incorporated to enhance the long-term stability and performance of high-value adhesive formulations exposed to sunlight.
• Advanced Material Protection: Serves as a key component in stabilization packages for agricultural films, geomembranes, and other outdoor polymeric applications demanding extended service life.
• Fine Chemical Synthesis: Acts as a versatile, multifunctional building block for synthesizing more complex, custom light-stabilizing agents and specialty additives.

Basic Information

Product Name	3,3'-(2-Hydroxypropane-1,3-Diyl)Bis[2,2,7,7,9,9-Hexamethyl-1-Oxa-3,8-Diazaspiro[4.5]Decan-4-One]
CAS No.	85391-30-6
Molecular Formula	C35H64N4O5
Molecular Weight	620.91 g/mol
Synonyms	Bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate; Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate derivative; Light Stabilizer 770; LS 770; UV-770; Timuvin 770; Hostavin N 20; Lowilite 77; Spirocyclic HALS; 2,2,6,6-Tetramethyl-4-piperidinol sebacate polymer; N,N'-Bis(2,2,6,6-tetramethyl-4-piperidyl)-1,6-hexanediamine polymer with 2,4,6-trichloro-1,3,5-triazine
EINECS	Contact for details

Quality Control

Our production of 3,3'-(2-Hydroxypropane-1,3-Diyl)Bis[2,2,7,7,9,9-Hexamethyl-1-Oxa-3,8-Diazaspiro[4.5]Decan-4-One] adheres to stringent quality management systems to ensure batch-to-batch consistency and high performance. The product is manufactured and tested to meet the exacting standards required for polymer stabilization. Certificates of Analysis (COA) documenting purity, assay, and key physical parameters are provided with every shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. The product is light-sensitive (store away from light) and may be hygroscopic (moisture-sensitive); ensure containers are sealed after each use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
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.