Endodontics sealer
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United States of America Patent
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Jul 12, 2011
Grant Date -
May 21, 2009
app pub date -
Dec 19, 2008
filing date -
Jun 20, 2007
priority date (Note) -
Expired
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Abstract
The present invention discloses an endodontic sealer which comprises a urethane-monoacrylate oligomer, a diluting monomer, at least one photo-initiator, at least one thermal-initiator, and a filler, wherein the urethane-monoacrylate oligomer is obtained by firstly reacting the acrylate with the diisocyanate to form an intermediate with only one isocyanate group, and then reacting the intermediate with the polyol to form the desired urethane-monoacrylate oligomer.
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