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Light Stabilizer UV 123

Light Stabilizer UV 123 also known as HALS 123,UV Absorber 123,Tinuvin 123.

Light Stabilizer UV 123 is a liquid amino ether group blocked amine photostabilizer, featuring low alkalinity, low migration, high thermal stability, and high photostability. It can avoid reacting with the acidic components of the coating, inhibiting the coating from losing gloss, changing color, cracking, and peeling. It is suitable for high-solid content, acid-catalyzed systems, and is particularly suitable for alkyd resins, acrylic esters, alkyd oxygen-curing paints, acrylic oxygen-curing paints, single-component thermosetting polyester color paints, and two-component non-isocyanate paints.

When used in combination with ultraviolet absorbers UV1130, UV571, and UV400, the photostabilizer UV123 significantly improves the durability of the coating. For automotive paints and industrial paints: it is recommended to add UV123 at 0.5-2%; UV1130 at 1-3%. For decorative paints and wood coatings: it is recommended to add UV123 alone at 0.5-2%; or add UV1130 at 1-3%.

Applications

  • ‍Used in Acrylic resin, polyurethane, sealant, adhesive, rubber, blends of TPE and TPO, polyvinyl chloride, polystyrene, polypropylene and other unsaturated resins. 
  • This product is especially recommended for use in coatings. It has excellent tolerance to acids, flame retardants, sulfur and catalyst residues.‍

Technical Specifications

  • ‍Product Name: Light Stabilizer UV 123
  • CAS No.: 129757-67-1
  • Chemical Name:Bis-(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate
  • Molecular Formula:C44H84N2O6
  • Molecular Weight: 737.2
  • Other name:HALS 123,UV Absorber 123,Tinuvin 123
  • Appearance: Light yellowish liquid‍

Melting Point

146-150℃

Purity

Monomer   ≥65%

Dimer     ≤20%

Ash

≤0.1%

Loss On Drying

≤1.0%

Chroma

≤50

Density

1.03g/cm3

Viscosity

2900-3100mPa.s

Refractive Index 

1.479-1.483

Transmittance

425nm≥95%   500nm≥97%

Solubility

(20oC:g/100g Solvent)

Water

Ethanol

N-hexane

Xylene

Toluene

<0.01

>50

>30

>50

>50

Package

25KG plastic drum or 200KG iron drum

Storage and Transportation

Keep container tightly closed and dry and storage in cool place.

Note: The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.

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