Composition for optical three-dimensional modeling

Patent metadata

Field	Value
Publication number	US-10786435-B2
Application number	US-201716343923-A
Country	US
Kind code	B2
Filing date	Oct 13, 2017
Priority date	Oct 21, 2016
Publication date	Sep 29, 2020
Grant date	Sep 29, 2020

Abstract

The present invention provides a composition for optical three-dimensional modeling that offers desirable shape accuracy in optical three-dimensional modeling, and that provides desirable transparency and mechanical characteristics upon being cured. The present invention relates to a composition for optical three-dimensional modeling comprising a polymerizable monomer (a), an ultraviolet-absorbing inorganic particle (b), and a photopolymerization initiator (c).

First claim

The invention claimed is:

1. A composition for optical three-dimensional modeling, comprising:
a polymerizable monomer (a);
an ultraviolet-absorbing inorganic particle (b);
a photopolymerization initiator (c); and
an organic ultraviolet absorber (d),
wherein the ultraviolet-absorbing inorganic particle (b) is surface-treated with a surface treatment agent.

2. The composition for optical three-dimensional modeling according to claim 1 , wherein the organic ultraviolet absorber (d) comprises a benzotriazole compound.

3. The composition for optical three-dimensional modeling according to claim 1 , wherein the polymerizable monomer (a) comprises a (meth)acrylate polymerizable monomer and/or a (meth)acrylamide polymerizable monomer.

4. The composition for optical three-dimensional modeling according to claim 1 , wherein the polymerizable monomer (a) comprises an aliphatic difunctional (meth)acrylate polymerizable monomer, or an aromatic difunctional (meth)acrylate polymerizable monomer.

5. The composition for optical three-dimensional modeling according to claim 1 , wherein the polymerizable monomer (a) comprises a monofunctional (meth)acrylamide polymerizable monomer.

6. The composition for optical three-dimensional modeling according to claim 1 , wherein the ultraviolet-absorbing inorganic particle (b) comprises at least one ultraviolet-absorbable inorganic compound selected from the group consisting of zinc oxide, cerium oxide, europium oxide, and zirconium oxide.

7. The composition for optical three-dimensional modeling according to claim 1 , wherein the ultraviolet-absorbing inorganic particle (b) comprises zinc oxide and/or cerium oxide.

8. The composition for optical three-dimensional modeling according to claim 1 , wherein the ultraviolet-absorbing inorganic particle (b) has an average primary particle diameter of 500 nm or less.

9. The composition for optical thee-dimensional modeling according to claim 1 , wherein the composition comprises the ultraviolet-absorbing inorganic particle (b) in an amount of 50 to 400 parts by mass relative to total 100 parts by mass of the polymerizable monomer (a).

10. A dental material formed of a cured product of the composition for optical three-dimensional modeling of claim 1 .

11. A method for producing a three-dimensional object by optical three-dimensional modeling using the composition for optical three-dimensional modeling of claim 1 .

12. The composition for optical three-dimensional modeling according to claim 1 , wherein
the polymerizable monomer (a) comprises a monofunctional (meth)acrylamide polymerizable monomer,
the ultraviolet-absorbing inorganic particle (b) comprises at least one ultraviolet-absorbable inorganic compound selected from the group consisting of zinc oxide, cerium oxide, europium oxide, and zirconium oxide,
the photopolymerization initiator (c) is 2,4,6-trimethylbenzoyldiphenylphosphine oxide, and
the organic ultraviolet absorber (d) is 2-hydroxy-5-tert-octylphenyl)benzotriazole.

Assignees

• Kuraray Noritake Dental Inc

Inventors

• Suzuki Kenji
• Nishigaki Naoki

Classifications

• C08F2/50

  with sensitising agents · CPC title

• A61K6/887 Primary

  Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• A61K6/71

  Fillers · CPC title

• A61K6/60 Primary

  comprising organic or organo-metallic additives · CPC title

• C08F2/44

  Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers · CPC title