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US 11,697,696 B2Granted
Compositions for the production of transparent dental parts by means of stereolithography
AssigneeIvoclar Vivadent AG
InventorKai Rist
Life of this patent
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Abstract
The present invention relates to a polymerizable composition, which comprises (a) at least one radically polymerizable compound and (b) at least one initiator for the radical polymerization, wherein the composition furthermore comprises (c) at least one UV absorber and (d) at least one optical brightener and comprises at least one radically polymerizable oligomer and at least one radically polymerizable, polyfunctional monomer as the at least one radically polymerizable compound (a).
Claims18
Polymerizable composition comprising
- (a) at least one radically polymerizable compound,
- (b) at least one initiator for the radical polymerization,
- (c) at least one UV absorber and
- (d) at least one optical brightener,
- and wherein the composition comprises
- from 25 to 60 wt.-% of at least one radically polymerizable oligomer, from 30 to 65 wt.-% of at least one radically polymerizable, polyfunctional monomer and from 0 to 15 wt.-% of one or more radically polymerizable, monofunctional monomers as the at least one radically polymerizable compound (a),
- from 0.1 to 3.0 wt.-% of at least one photoinitiator as the initiator (b),
- from 0.0001 to 2.0 wt.-% of the at least one UV absorber (c),
- from 0.001 to 0.1 wt.-% of the at least one optical brightener (d),
- from 0 to 40 wt.-% filler (e) and
- from 0 to 3.0 wt.-% thixotropic additive (f),
- in each case relative to the total weight of the composition.
9 more elements
Dependencies are inferred from the claim text.