Overview
BLS® 751 is a liquid ultraviolet light absorber used to provide excellent light stability to a variety of polymers.
Chemistry
Chemical Name: Phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-6-dodecyl-,
branched and linear
CAS Number: 125304-04-3 / 23328-53-2
Chemical Structure
Typical Properties
Product Form: Liquid
Molecular Weight: ~395oC (isomer mix)
Applications
BLS® 751 is versatile and can be used in various thermoplastic and coating applications, including thermoplastic PUR, rigid and plasticized PVC, PVB, PMMA, PVDC, EVOH, EVA, and hot cured unsaturated polyesters. It is also suitable for use in spin finishes for PA, PET, PUR, and PP fibers, as well as in latices, waxes, adhesives, styrene homo- and copolymers, elastomers, and polyolefins.
Advantages
- High solubility in many solvents, monomers, or intermediates
- Easily emulsifiable in water-based adhesives
- Suitable for various substrates without compatibility issues
- Maintains stability even at elevated temperatures
- Offers high absorption and protection efficiency
- Does not crystallize in liquid photographic emulsions
Guidelines for Use
Suggested use levels of BLS® 751 typically range from 0.2% to 5.0%, depending on the substrate and performance requirements of the final application. In polyurethanes, concentrations range between 0.2% and 0.5%, while in PVC applications, concentrations range from 0.3% to 0.5%, with up to 5% for co-extruded PVC. In adhesives, the recommended concentration is between 0.5% and 1.0%. BLS® 751 can be used alone or in combination with other functional additives, such as antioxidants (hindered phenols, phosphites) and HALS light stabilizers. Please contact your Mayzo representative for specific recommendations for your application.
Storage
This product may be stored up to two years in a sealed container. Containers should be kept tightly closed when not in use and stored in a cool, dry place.
Safety
Please consult the Safety Data Sheet (SDS) prior to handling or using this product.
FDA Regulations
BLS® 751 has not been cleared by the FDA for use in food contact applications.
