Takeda Chemical Industries, Inc.

J.morita Corporation

Tsutomu Kubota

Jugo Goto

Reiji Miyamoto

Kazutaka Mochizuki

Yasuyuki Kajita

Yoshikazu Nakai

Masuo Miyaji

Reiichi Kotani

Tomoyoshi Shinoda

Toshitaka Sekioka

Kenji Kudo

Gaku Yoshimoto

Tomohisa Takagi

A dental treatment training apparatus allows practice of complex treatments involving high accuracy and skill levels. A dental treatment training apparatus for providing a simulated treatment in which a treatment instrument is applied onto a tooth model includes a display unit that displays, in a superimposed manner, 3D image information based on predefined 3D information about the tooth model and the treatment instrument on a 3D view image, a position detector that detects 3D positional information about the tooth model, the treatment instrument, and the display unit, and a control unit that causes the display unit to display, in a superimposed manner, 3D image information corresponding to an item selected on a superimposed selection operation display for allowing selection of an item associated with the simulated treatment based on the 3D positional information detected by the position detector.

Dental treatment training apparatus and dental treatment training system

A method for producing a polyurethane elastomer which comprises reacting (1) either a polyisocyanate and a polyol or an isocyanate-terminated prepolymer obtainable by reacting said polyisocyanate with said polyol with (2) a diol of general formula ##STR1## wherein A.sub.1 and A.sub.2 are the same or different and each represents a bond, --O-- or --COO--; R.sub.1 and R.sub.2 are the same or different and each represents C.sub.1-6 alkylene; X.sub.1 and X.sub.2 are the same or different and each represents H or hydroxyalkyl and (3) a triol having a hydroxyl equivalent of 60 to 500, gives a polyurethane elastomer with improved tensile strength, tear strength and other mechanical properties.

Process for producing polyurethane elastomers

Photocurable adhesive and production of laminated articles using the same

A method of profile lapping adhesion which comprises:

Photocurable adhesive of hydroxy-polyesterurethane acrylate, monomer and

A method of adhesion which comprises applying a two-step reactive type tacky adhesive agent comprising (1) a non-photopolymerizable epoxy resin or isocyanate compound, (2) a curing agent therefor and (3) a compound having at least one photopolymerizable vinyl group in one molecule onto a substrate, irradiating the whole applied surface with light to develop the tackiness, and sticking the substrate together to a material to be bonded, while the tackiness is retained, followed by curing. The method provides excellent green bonding strength and can permit the satisfactory adhesion without clamping, and can be particularly suitably utilized in the adhesion of materials to be bonded which have a curved surface difficult to be clumped.

Method of adhesion and composition therefor

A solid resin composition useful for coating and bonding, which comprises a carboxyl-modified product of a hydrolyzed ethylene/vinyl acetate copolymer, a carboxyl-terminated saturated polyester resin and a solid epoxy resin with an epoxy equivalent of 80 to 400, each of the component being blended at a specified ratio. The composition, when baked, affords tough coating films or adhesive layers with markedly improved heat and impact resistances in addition to high hardness, strong adherence and high chemical resistance.

Solid resin composition

A powdery coating composition comprising (A) a carboxyl-modified product of a hydrolyzed polymer obtained by hydrolyzing a copolymer derived from a vinyl ester of a saturated monocarboxylic acid and a vinyl monomer polymerizable therewith and (B) a compound having not less than two epoxy groups in the molecule offers extremely tough coating films which are resistant to chemicals, water and salt spray.

Powdery coating composition

A polyurethane based composition for powder coating uses, which comprises a combination of an organic polyisocyanate compound and a hydroxyl-containing compound, the hydroxyl-containing compound being

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Mishima, Japan

Tsutomu Kubota