OMNISTAB® LS3529 & LS3346 – Solving Outdoor Plastic Weathering Challenges

Outdoor plastic products face constant aging from UV, heat, and moisture. OMNISTAB® LS3529 and LS3346 are high‑molecular‑weight hindered amine light stabilizers (HALS) that provide effective, long‑term protection for polyolefins and engineering plastics.

OMNISTAB® LS3529 – All‑Round Long‑Term Protection

This polymeric HALS features both hindered amine and triazine groups, offering:

• Excellent heat and extraction resistance, stable during high‑temperature processing and outdoor use

• Low color contribution and low volatility – minimal impact on product appearance

• Low alkalinity – remains effective in acidic environments (acid rain, pesticides)

• Significantly extended service life and color retention

It is ideal for PP, PE, and their composites – used in films, tapes, fibers, sheets, and injection‑molded parts. It also works well with PA, PET, PBT, PVC, POM, ABS, HIPS, PMMA, and more, making it a great choice for automotive plastics, outdoor tarpaulins, and artificial turf.

OMNISTAB® LS3346 – Specialty Stabilizer for Transparent Products

This HALS is designed for clarity‑sensitive applications:

• Excellent light transmission and very low color – prevents yellowing and hazing in clear or light‑colored plastics

• Good gas‑fading resistance – protects against NOx attack, maintaining gloss and color

• Low thermal weight loss and high processing stability – suitable for film blowing, spinning, and high‑speed injection molding

• Works synergistically with UV absorbers to multiply outdoor lifespan

It is particularly suited for PP and PE films, tapes, fibers, and molded/rotomolded articles, as well as for nylons, polyesters, and polycarbonate.

For more details, technical data, or application advice on OMNISTAB® LS3529 and LS3346, please contact our sales team. We offer professional support and customized solutions for your polymer needs.