? ? 819 is an efficient free radical(I) type solid photoinitiator has the characteristics of ultra-efficient deep and rapid curing, wide light wave absorption range, high initiating activity, low yellowing, low odor, low migration, and environmental protection. It is mainly used for corresponding acrylate resins, unsaturated benzene Curing and drying of vinyl resin, UV ink, UV paint, UV adhesive, UV photoresist, etc., especially suitable for deep colored systems, white systems, thick coating systems, and also suitable for varnish systems.
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