Typical Properties

Molecular Formula: C₂₈H₅₂N₂O₄

Molecular Weight: 481

Product Form: White crystalline powder or granules

Volatile Matter, WT%: ≤0.20

Melting Range, ℃: 80~86

Content: ≥99%

Light Transmittance: 425nm ≥98.0%; 500nm ≥99.0%

Applications

HS-770 is a low molecular weight hindered amine light stabilizer, which can provide excellent light stabilization protection for thick parts and films and is especially effective for thick PP parts. 770 has the advantages of good compatibility and easy dispersion. Compared with conventional UV absorbers, HS-770 is less dependent on the thickness of the product, so it is also suitable for products with large surface areas such as films and flat yarns. 770 is recommended for use in PP, impact-modified TPO, EPDM, PS, impact-resistant PS, ABS, SAN, ASA and PU, and is also effective for PA and POM. At the same time, HS-770 can improve heat resistance when used in combination with antioxidants, and has a synergistic effect when used in combination with light stabilizers, which can improve the light stabilization effect. HS-770 is not recommended for use in combination with sulfur-containing antioxidants DLTP and DSTP.

Storage

HS-770 is stable in nature and has no special requirements; pay attention to moisture-proof and avoid high temperature.

0.1% ~ 0.5% (the specific amount added depends on the actual application of the customer)