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US 2014/0271496 A1Published application
Dental material and method
OwnerStewart J. LUSTGARTENinventor
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OwnerStewart J. LUSTGARTENinventor
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A dental material composed of hydrophilic polycaprolactone formed by the process of exposing a hydrophobic caprolactone to ionizing irradiation from a radiation source selected from the group consisting of an Electron Acceleration (E beam), Gamma II, Cobolt, X-ray or a source of UV radiation to form a cross linked polycaprolactone composition consisting of two distinct phases one of which is soluble and the other non-soluble, and adjusting the duration of ionizing radiation and/or the intensity of the radiation to cause the concentration of the soluble phase to be above at least about 65% by weight of the cured polymeric composition whereby the hydrophobic caprolactone becomes hydrophilic.
A dental material comprising hydrophilic polycaprolactone formed by the process of exposing a hydrophobic caprolactone to ionizing irradiation from a radiation source selected from the group consisting of an Electron Acceleration (E beam), Gamma II, Cobolt, X-ray or a source of UV radiation to form a cross linked hydrophilic polycaprolactone composition consisting of two distinct phases one of which is soluble and the other non-soluble, with the concentration of the soluble phase above at least about 65% by weight of the cured polymeric composition.
A dental material as defined in claim 3 wherein said radio opaque additive is barium sulfate.
A method of forming a hydrophilic dental material comprising the steps of exposing a hydrophobic caprolactone to ionizing irradiation from a radiation source selected from the group consisting of an Electron Acceleration (E beam), Gamma II, Cobolt, X-ray or a source of UV radiation to form a cross linked polycaprolactone composition consisting of a soluble phase and an insoluble phase and adjusting the duration of ionizing radiation and/or the intensity of the radiation until the concentration of soluble phase is above at least about 65% by weight of the cured composition.
Dependencies are inferred from the claim text.