AQUEOUS POLYMER COMPOSITIONS

摘要

Aqueous polymer composition suitable for coating which comprises the following components dispersed in water: (1) a combination of an acrylic polymer(s) (A) and an acrylic polymer(s) (B) where polymer(s) (A) has a Tg of not more than 30 DEG C and polymer(s) (B) has a Tg of at least 35 DEG C, more preferably at least 45 DEG C, which is at least 25 DEG C higher than the Tg of polymer(s) (A), and wherein one or both polymer(s) (A and B) bear crosslinker functional groups capable of imparting ambient-temperature crosslinkability to component (1) in a coating formed from the composition via the formation of non-radically-formed covalent bonds; and (2) a self-dispersible, ionically stabilised polymer having olefinically unsaturated bond functionality capable of imparting radiation-curability (preferably UV-radiation curability) thereto in a coating formed from the composition.