| abstract |
The invention relates to a2 nd generation hyperbranched self-initiated UV resin modified by sulfur-containing benzophenone and a preparation method thereof, wherein the self-initiated UV resin takes pentaerythritol as a core, has a hyperbranched three-dimensional structure and contains a plurality of functional active groups, a plurality of sulfur-containing benzophenone photoinitiating groups and a plurality of branched chain group alkane groups; has pigment bearing property, high solid and low viscosity and storage stability; the self-initiation efficiency is high, and the defects of slow curing rate, easy yellowing of a coating, surface migration, strong volatility, large heat loss, harmful substance generation, pungent smell generation and the like of an externally added BP initiator are overcome; the hyperbranched self-initiation UV resin containing the benzophenone has excellent flexibility, adhesive force, chemical resistance, heat resistance, aging resistance, oil resistance, wear resistance, pollution resistance and impact strength, and the coating has no odor, and can be used for UV colored floor coatings, UV wood coatings, UV alloy coatings, UV circuit board printing ink and UV plastic coatings. |