TINUVIN 152 is a high-performance Hindered Amine Light Stabilizer (HALS) that significantly improves coating durability. It minimizes paint degradation that could otherwise lead to cracking and gloss loss in clear coats and also chalking in pigmented paints. It features:

• Reactable primary hydroxyl enabling TINUVIN® 152 to co-condense with melamine and isocyanate cross-linkers and to exhibit improved compatibility and resistance to migration in many systems, such as coatings over plastics
• Low basicity, making TINUVIN®152 suitable for use in acid-catalyzed systems and in coatings using acidic pigments
• Very low volatility

Applications for TINUVIN 152

Migration of stabilizers can cause depletion from, and subsequent degradation of coatings. This is especially apparent when coatings are applied over plastics, but may also occur when clear coats are applied over pigmented base coats, or during “wet-on-wet (-on-wet)” coatings applications. Through the primary hydroxyl, TINUVIN 152 can co-condense with many coating chemistries, such as melamine and isocyanate crosslinkers, anchoring it into the coating thereby preventing migration.

TINUVIN 152 provides superior compatibility and prolonged effectiveness in polar, highly crosslinked coating systems where conventional HALS may be incompatible. These coatings include polyester or acrylic urethanes, and highly cross-linked polyester or acrylic melamine systems.

Because of its low basicity, TINUVIN 152 is also effective in thermosetting systems such as traditional acid-catalyzed automotive and coil coatings, as well as in thermoplastic acrylic and oxidative drying alkyds for industrial/ decorative paints and varnishes.

The recommended concentrations are 1% – 2% by weight based on resin solids in light-stable pigmented systems.

Features & Benefits

• Non-interacting low basicity aminoether (NOR) HALS
• Hydroxy functional group can be reacted with isocyanate and melamine crosslinkers
• Low volatility