Additol BP Benzophenone 119-61-9 Cytec Surface Specialties North America South and Central America Crosslinking / Coupling / Curing Agents Photoinitiator Acrylic/Acrylate Resins Polyester >> Unsaturated Vinyl Coatings >> UV / Radiation Curing Inks >> UV / Radiation-curable Wood & Furniture Coatings INKS >> Varnishes / Over print varnish Additol BP is used as a hydrogen abstraction photoinitiator. It is used as a radical photoinitiator in UV coatings, inks and overprint varnishes. In combination with amine co-initiators or alpha cleavage photoinitiators, Additol BP is used in formulations containing unsaturated materials such as acrylates, methacrylates, vinyls and unsaturated polyesters. With exposure to UV light, Additol BP undergoes a photochemical reaction that generates radicals. These radicals will initiate polymerisation through the unsaturated groups present in the system. It provides rapid cure response, particularly surface cure when combined with conventional tertiary amine co-initiators such as N-methyldiethanolamine. Better depth of cure and moisture resistance, as well as excellent surface cure, is obtained with reactive amine co-initiators. PERFORMANCE HIGHLIGHTS Additol BP is charaterised by: Good solubility UV curable formulated products containing it are characterised by: Excellent surface cure The final properties of UV cured products also depend on the selection of other components such as oligomers, reactive diluents and additives. SUGGESTED APPLICATONS: Additol BP is typically used at levels of 3-7% by weight based on the reactive components of the formulation. Applications include: Overprint varnishes on paper and plastic Wood top-coats Coatings and inks requiring optimum surface cure Hydrogen abstraction photoinitiator. Exhibits good solubility and excellent surface cure. Used in overprint varnishes and wood top-coats.