Mitsui Chemicals, Inc.

Sun Medical Co., Ltd.

Hiroki Murai

Yoshimitsu Tanabe

Masami Arata

Kazuhiko Yoshinaga

Tatsuya Ori

Shinsuke Kinoshita

Takenori Mitamura

Toshikazu Sakamaki

Mai Kimura

Masuji Tsuchikawa

Sayaka Miyamori

Takaaki Hayashi

Yoshiaki Katsura

Hirohisa Shimizu

Yoshihisa Kamimoto

Suguru Endo

Takeshi Yokoyama

Eiji Kobayashi

A photocurable composition, wherein: in a case in which a rectangular sheet-like test piece Pwith a length of 40 mm, a width of 10 mm, and a thickness of 0.5 mm is produced by photomodeling under specific conditions, and a storage modulus is measured for the thus produced test piece Pby dynamic viscoelastic measurement with a measurement frequency of 1 Hz while increasing a temperature in a range of from 25° C. to 300° C. at a rate of 3° C./min, the storage modulus at 135° C. is 3.0×10Pa or more.

Photocurable composition, three-dimensional modeling product, and dental product

A photocurable composition includes a photopolymerizable component and a photopolymerization initiator. When a test piece with 39 mm length, 8 mm width, and 4 mm thickness, is produced by photofabrication under conditions in which the photocurable composition is irradiated with visible light having 405 nm wavelength at 12 mJ/cmirradiation dose to form a cured layer with 100 m thickness, the cured layer is stacked in a thickness direction thereof to form a rectangular fabrication product with 39 mm length, 8 mm width, and 4 mm thickness, and the fabrication product is irradiated with ultraviolet rays having 365 nm wavelength at 10 J/cmirradiation dose to produce the test piece, a total fracture work of the test piece measured in compliance with ISO20795-1:2008 is 1100 J/mor more.

Photocurable composition, cured product, and dental product

A dental adhesive curable composition containing a polymerizable monomer including a polymerizable monomer represented by formula (1') and defined amounts of an acidic group-containing polymerizable monomer, a polymerization initiator containing a peroxide and a photopolymerization initiator, and a reductant containing a sulfinic acid compound and/or a salt thereof, and a filler: wherein the R groups, n and m are defined. A dental adhesive curable kit and a mobile tooth fixing material are also provided.

Dental polymerizable monomers, compositions, adhesive dental materials and kits

The present invention provides polymerizable monomers represented by the following general formula (1) that are useful as dental materials.  In the general formula (1), Ris a divalent Caromatic hydrocarbon group or a divalent Coptionally bridged cyclic hydrocarbon group, Rand Rare each a hydrogen atom or a Calkyl group, R, R, Rand Rare each a hydrogen atom or a hydrocarbon group, Rand Rare each a hydrogen atom or a methyl group, m and n are each independently 0 to 4, and Rand Rare each independently a Clinear alkylene or Clinear oxyalkylene group optionally substituted with a Calkyl group or a (meth)acryloyloxymethylene group in place of a hydrogen atom.

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Ichihara, Japan

Hiroki Murai