MG-Guard UV-3346

MG-Guard™ UV-3346 is a high molecular weight secondary hindered amine light stabilizer (HALS). This additive imparts excellent colorfastness, protection against surface crazing, retention of physical properties, and thermal sta- bility to most thermoplastics. High molecular weight HALS such as UV-3346 are especially useful in thin sections, films, tapes, and fibers, where low molecular weight additives could cause unacceptable migration and exudation onto the surface, creating stickiness and lowering surface gloss.

Features & Benefits:

• Low volatility and extractability
• Low migration, low propensity for exudation or “blooming” onto the surface of a polymer article
• Good synergism, especially in surface-sensitive resins like PP, with low molecular weight HALS (e.g. UV-770)
• Minimal migration and “blooming”