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Dragonox® 245

CAS Number
36443-68-2
EC Number
253-039-2
Chemical Name
Antioxidant 245

Dragonox® 245 is a highly effective asymmetric hindered phenol antioxidant with high antioxidant efficiency, low volatility, good oxidation resistance, and good coloring performance. It has a significant synergistic effect with auxiliary antioxidants (such as thioester, phosphite, etc.) and can be used with light stabilizers to give excellent weather resistance to products. This substance is mainly used during polymer processing and for long-term heat stabilization of hips, ABS, MBS, other styrene polymers, POM, PA, PUR, PVC, and thermoplastic polyester. It can be used as an effective chain terminator in the polymerization process of PVC and can be added to the monomers of polystyrene and PVC without affecting the polymerization reaction.

Properties

Physical Form
  • Granules
  • Powder
  • Solid

Product families

Plastics — Polymer Additives
  • Antioxidants & Stabilizers

Other characteristics

Brand
Dragonox
Synonyms

Ethylenebis(oxyethylene) bis[3-(5-tert-butyl-4-hydroxy-m-tolyl)propionate], Ethylenebis(oxyethylene)bis-(3-(5-tert-butyl-4-hydroxy-m-tolyl)-propionate), Ethylenebis(oxyethylene)bis(3-tert-butyl-4-hydroxy-5-methylbenzenepropanoate), Triethylene glycol bis-[3-(3-t ert-butyl-4-hydroxy-5-methylphenyl)propionate], Triethylene glycol bis-[3-(3′-tert-butyl-4′-hydroxy-5′-methylphenyl)propionate], Triethylene glycol bis(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate, Triethylene glycol bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate], Triethylene glycol bis[3-(3-tert-butyl-5-methyl-4-hydroxyphenyl)propionate], Triethylene glycol bis[β-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate], Triethylene glycol bis[β-(3-tert-butyl-5-methyl-4-hydroxyphenyl)propionate], Triethylene glycol bis[β-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionate]

Functions
Antioxidant
Compatible Polymers & Resins

Acrylonitrile Butadiene Styrene (ABS), High-Impact Polystyrene (HIPS), Methyl Methacrylate-Butadiene-Styrene(MBS), Polyamides, Polyesters, Polyoxymethylene (POM), Polystyrenes (PS), Polyurethanes (PU), Polyvinyl Chloride (PVC)

Color
White
Appearance
White powder or granule
Technology
Plastics
Packaging Type
Bags
Material Features
  • Good Weather Stability
  • Long Term Protection
  • Low Volatility
  • Oxidation Resistant
Compatible Polymers and Resins
  • Acrylonitrile Butadiene Styrene (ABS)
  • High-Impact Polystyrene (HIPS)
  • Methyl Methacrylate-Butadiene-Styrene(MBS)
  • Polyamides
  • Polyesters
  • Polyoxymethylene (POM)
  • Polystyrenes (PS)
  • Polyurethanes (PU)
Plastics and Elastomers Functions
Antioxidant

Technical data

Table 1 of 1

5 rows
CharacteristicValueUnit
Melting Range76 - 80°C
Puritymin. 98%
Volatilemax. 0.5%
Transmittance (425 nm)min. 95%
Transmittance (500 nm)min. 97%

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