UV-P is a benzotriazole
type UV absorber. Characterized by its strong, broad range UV absorption
property, UV-P
brings an excellent photostability to polymers against UV light exposure in
many ways i.e. retarding color yellowing , preventing embrittlement,
maintaining of mechanical properties etc.
UV-P is
particularly effective in styrenic polymers, PVC, unsaturated polyesters,
polyurethanes, acrylic polymers and polycarbonates.
Physical properties
Appearance: white to yellowish crystal powder
Melting Point: 129 -132 Deg. C
Assay: 99% min (HPLC)
Transmittance: 440nm: 97% min
500nm: 98% min
Ash content: 0.3% max
Advantage
• Very high photostability for its strong
ability to absorb light especially in UV region(270-340nm)
• Odorless, does not bring smells to the
polymers.
• Very stable to heat, and can be used in
plastics which require high processing temperature.
• Low vapor pressure, very little or no loss
during processing.
Applications
• Styrenic polymers: 0.2-0.5wt% for PS based
on polymer wt.
0.3-0.5wt% for ABS based on polymer wt.
0.5-2.0wt% for HIPS based on polymer wt.
• Polyvinyl chloride: 0.2-0.5wt% for PVC
based on polymer wt.
• Polyurethane: 0.3-1.0wt%
for PS based on polymer wt.
• Polyacrylate: 0.15-0.3wt% for PS based on
polymer wt.
• Polycarbonate: 0.15-0.3wt% for PS based on
polymer wt.
• Unsturated Polyester: 0.2-0.4wt% for PS
based on polymer wt.
Toxicity & Safety
UV-P can be safely handled without irritation
caused to the skin.
Package
In 25 kg carton drum with inner plastic
bag.
Storage
In a closed system and dry , dark place
without any light exposure.
