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uv-p is a benzotriazole type ultraviolet light absorber, impacting good light stability for plastics and other organic polymers. uv-p protects polymers as well as organic pigments from uv radiation helping to preserve the original appearance and physical integrity of engineered plastics,elastomers,pvc, adhesives, and polyurethanes during outdoor weathering.
Other names: TINUVIN P
Appearance: SLIGHT YELLOW POWDER
Solubility: Clear solution, free from insoluble
Volatiles content:0.5% max
Ash content: 01 % max
Transmittance: 445nm 98.0% min
500nm 99.0% min
It must be stored in closed containers in dry cool conditions. The shelf life is two years in origina ,unopened containers.
As the ultraviolet absorption agent, it is availale to polyester,epoxy,cellulose acetate, PVC, polystyrene, plexiglass and polyacrylonitrile resin etc.
Unsaturated polyester : 0.2-0.5 WT% based on polymer weight
PVC: 0.2-0.5 WT% based on polymer weight
Plasticized PVC: 0.1-0.3WT% based on polymer weight
Polyurethane 0.2- 1.0 WT% based on polymer weight
Polyamine 0.2-0.5% based on polymer weigt
For polyamine: 0.2-0.3WT% based on polymer weight
For polyester: 0.2-0.3WT% based on polymer weight