TINUVIN 571
TINUVIN 571
Tinuvin 571 is a liquid ultraviolet light absorber (UVA) of the hydroxyphenyl benzotriazole class which imparts good light stability to a variety of polymers.
Use levels of this product range between 0.2 % and 5.0 %, depending on substrate and performance requirements of the final application.
In polyurethanes, the concentration levels for Tinuvin 571 range between 0.2 % and 0.5 % depending on substrate, processing conditions and longterm light stability requirements.
Applications
Tinuvin 571 can be applied in thermoplastic PUR, coating and integral foams, rigid and plasticized PVC, PVB, PMMA, PVDC, EVOH, EVA, hot cured unsaturated polyesters and spin finishes for PA, PET, PUR, and PP fibers. The product is also suitable for latices, waxes, adhesives, styrene homo- and copolymers, elastomers and polyolefins.
Features & Benefits
Tinuvin 571 is highly soluble in many solvents, monomers, or intermediates and easily emulsifiable in water-based adhesives. It can be considered for use during polymerization as well as for topical applications on PVC sheets.
Tinuvin 571 features high compatibility in various substrates, low volatility even at elevated temperatures, and high absorption and protection efficiency.
Properties
| Physical Properties | Value |
| Melting Point | ~56°C |
| Flash Point | > 200°C |
| Specific Gravity (20°C) | 1.0 g/ml |
| Vapor Pressure (20°C) | 1.2 E-5 Pa |
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