Aqueous polymer compositions
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United States of America Patent
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May 4, 2004
Grant Date -
Mar 20, 2003
app pub date -
Aug 28, 2002
filing date -
Mar 9, 2000
priority date (Note) -
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Abstract
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.degree. C. and polymer(s) B has a Tg of at least 35.degree. C., more preferably at least 45.degree. C., which is at least 25.degree. C. higher than the Tg of polymer(s) A, and wherein one or both of polymers 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.
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