Polyamphoteric superabsorbent copolymers
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United States of America Patent
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Apr 11, 2006
Grant Date -
Nov 6, 2003
app pub date -
May 6, 2002
filing date -
May 6, 2002
priority date (Note) -
Expired
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Abstract
A polyamphoteric superabsorbent copolymer made up of polymerizerable acid monomer and of polymerizable base monomer and optionally a supplemental monomer. In particular, the invention includes a radiation curable coating composition that comprises from about 20 weight % to about 80 weight % of polymerizerable acid monomer and from about 20 weight % to about 80 weight of polymerizable base monomer; and from 0 weight % to about 50 weight % of supplemental monomer. On exposure to radiation the coating composition forms a polyamphoteric superabsorbent copolymer. The radiation curable coating composition may be used with suitable substrates.
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