Antioxidant 565; AO 565; ADNOX 565 for polymers

Chemical Name: 2,6-di-tert-butyl-4—(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol
Synonyms: Irganox 565, Songnox 5650; Antioxidant 565; AO 565
CAS No.: 991-84-4
Chemcial Structure:

Package: 25KG Carton

Application

ADNOX® 565 is a high molecular weight; non-staining, multifunctional antioxidant developed for the stabilization of unsaturated elastomers (BR, IR, SBR, SIS, SBS, etc.), hot melt adhesives, and rosin ester tackifier resins.

Background

Antioxidant 565 is a polymer multifunctional hindered phenolic antioxidant, mainly suitable for post-processing stabilization of unsaturated rubber, very effective for elastomers, and can protect materials from occurring during production, processing and final use. Thermal oxidative degradation. It is an excellent antioxidant and photothermal stabilizer for a variety of resins. It has the characteristics of small addition amount, low volatility, high color fastness, and can prevent the formation of gel. Very effective in the following elastomers: cis-butadiene rubber (BR) isoprene rubber (IR) styrene-butadiene rubber (SBR) nitrile-butadiene rubber (NBR) carboxylated styrene-butadiene latex emulsion polystyrene-butadiene rubber (ESBR) solution polymerization Styrene-butadiene rubber (SSBR) thermoplastic styrene-butadiene rubber SBS thermoplastic styrene-butadiene rubber SIS can also be used for adhesives, natural and synthetic resins, such as EPDM, ABS plastic, polyamide (nylon, PA), high Impact polystyrene (HIPS) and polyolefins. ABS plastic is a modified polystyrene plastic composed of three components based on acrylonitrile (A), butadiene (B) and styrene (S). ABS plastic can be used to make plastic decorative boards with embossed patterns, etc.

The synthesis of Antioxidant 565 is investigated in this dissertation. 2,6-di-tert-butylphenol, as the initial substrate, is nitrated to 2,6-di-tert-butyl-4-nitrophenol in 95% yield. 2,6-di-tert-butyl-4-nitrophenol is reduced to 4-amion -2,6-di-tert-butylphenol with hydrogen in the presence of Raney Ni or Pd/C. To prevent decomposition of 4-amion -2,6-di-tert-butylphenol when exposed to air, 4-amion -2,6-di-tert-butylphenol is allowed to react with Cyanuric chloride without separation to form 6-(3,5-di-tert-butyl-4-hydroxy) laniline-2,4-dichloro-1,3,5-triazin in 95% yield for 2 steps.

Reaction of 6-(3,5-di-tent-butyl-4-hydroxy) aniline-2,4-dichloro-1,3,5-triazin with 2 equivalence of n-Octylthiol gave the final product 6-(3,5-di-tert-butyl-4-hydroxy aniline-2,4-bis (octylthio)-1,3,5-triazin in 94% yield.