Light Stabilizer 770 (HS-770) — Import Substitute

New High-Efficiency Light Stabilizer 770 (Import Substitute)

Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate 
Light Stabilizer 770 Molecular Formula: C28H52O4N2
 
Light Stabilizer 770 Molecular Weight: 480.73
 
Light Stabilizer 770 Product Properties:
 White or pale yellow crystalline powder, soluble in benzene, chloroform, methanol, ethanol, ether and other organic solvents; insoluble in water.
Product Uses:
 This product is a new type of light stabilizer developed in the 1970s and the first variety to be industrialized abroad. It can be used in polypropylene, high-density polyethylene, unsaturated resins, polyurethane, polystyrene, and ABS resins, and its light stabilization effect is superior to commonly used light stabilizers. Used together with antioxidants, it improves heat resistance; it also has a synergistic effect with UV absorbers, further enhancing light resistance. Recommended dosage: 1–3‰
Application Examples:
 Used in polypropylene woven packaging bags, it is an indispensable light stabilization additive for large export packaging bags, greatly improving their aging service life. Applied in polypropylene awnings, such as large sun umbrellas and sunshades, it delivers excellent results. Especially suitable for straps and films.
 
Light Stabilizer 770 Quality Specifications:
Light Stabilizer 770 Appearance: White or pale yellow crystalline powder

Light Stabilizer 770 Melting Point: 81–85℃
Light Stabilizer 770 Volatile Matter: ≤0.2% (105℃ 2 hours)
Light Stabilizer 770 Ash Content: ≤0.1% Purity: ≥99％
Light Stabilizer 770 Light Transmittance: (10g/100ml toluene)
 425nm >90％　　500nm >95％
 
Light Stabilizer 770 Packaging:
Paper drum with inner plastic bag, 25 kg net per drum.
 
Storage:
 Avoid prolonged sun exposure or high-temperature storage; keep in a cool, dry, and ventilated place to prevent moisture, water spray, and heating.