Mitsui Chemicals, Inc.

Shofu Inc.

Sun Medical Co., Ltd.

Nitto Jushi Kogyo Co., Ltd.

Osamu Kohgo

Hiroshi Naruse

Seiichi Kobayashi

Hidetoshi Hayashi

Mamoru Tanaka

Akinori Ryu

Yoriaki Matsuzaki

Kunio Okumura

Hironori Kuboi

Yuji Takahashi

Yoshimitsu Tanabe

Masao Imai

Atsuo Otsuji

Tomoyuki Ando

Ryu Oi

Mitsuo Nakamura

Eizaburo Higuchi

Kouya Kojima

Shunsuke Miyata

Masakazu Murakami

Masataka Miyasato

Tadashi Okuma

Hideyuki Ueki

Chidzuru Inami

Ahmad Jalaludin

Maho Okumura

Naoyuki Kato

Kenichi Fujii

Tsutami Misawa

Shinichi Usugi

Junichi Mohri

Masahiro Enna

Hideki Yamamoto

Disclosed is a material for a denture base containing a polymer component and containing an acrylic resin.

Material for denture base, denture base, method of manufacturing the denture base, plate denture, and method of manufacturing the plate denture

Disclosed is a material for a denture base containing a polymer component having a weight average molecular weight of 1,200,000 or more and containing an acrylic resin.

The present invention provides a dental material, a dental material composition and a dental restorative material that exhibit small polymerization shrinkage particularly during curing and are producible at low cost on the industrial scale. The dental material of the present invention includes a specific urethane (meth)acrylic compound represented by Formula (1) described below. 

Dental material, dental material composition, dental restorative material, and cured product

The present invention provides a novel compound and a composition including the compound that exhibit small polymerization shrinkage particularly during curing and are producible at low cost on the industrial scale. The compound of the present invention is represented by Formula (1): 

Compound, composition comprising the compound and cured product

A polymerizable composition including a compound represented by following General Formula (1): 

Polymerizable composition, and resin and optical part using the same

A resin composition excellent in tintability and resin strength, a resin obtained by curing such a resin composition, and an optical component is provided. A polymerizable composition containing an isocyanate compound suitably used for transparent resin materials, at least one polythiol compound which may have one or more (poly) sulfide bonds in a molecule, and at least one polyhydroxy compound having two or more hydroxy groups in a molecule and/or at least one (poly)hydroxy(poly)mercapto compound having one or more hydroxy groups and one or more thiol groups is used.

Polythiourethane polymerizable composition and method for producing optical resin by using same

Polymerizable compositions containing at least one metal thietane compound represented by general formulas (110), (201) or (120), respectively, wherein said formulas are as follows: and wherein the identified moieties and n, p, q and r are defined.

Metal thietane compound, polymerizable composition containing the compound, resin and use of the resin

A thietane compound represented by the following formula (30): in formula (30), A represents an OH group or an SH group.

Thietane compound, polymerizable composition containing the same, resin, method for producing the resin, and use of the polymerizable composition and the resin

Disclosed is a metal thietane compound represented by the following general formula (120),  (wherein, in the above general formula (120), M is a member selected from the group consisting of Bi, Sb, Ti, Zr and Ta; Xand Xare each independently a sulfur atom or an oxygen atom; Ris a divalent organic group; the bond between M and T shown by a dotted line and a solid line represents a single or double bond; m is an integer of 0 or 1 or more; n is the number of valence of M; and p is an integer of equal to or more than 1 and equal to or less than n, provided that when r is 1, q is 0 and Y is a monovalent inorganic or organic group; when r is 1 and n-p-q is 2 or more, a plurality of Ys contained are each independently selected from monovalent inorganic or organic groups; when r is 1 and n-p-q is 2 or more, a plurality of Ys may be bonded to each other to form a ring containing M; when r is 2, n-p-q is 1 or 2 and Y is a divalent group; when r is 2 and n-p-q is 2, two Ys may form a ring together with two Ms; and when r is 2 and q is 2, a plurality of Ts contained are each independently selected from inorganic or organic groups).

A resin composition excellent in tintability and resin strength, a resin obtained by curing such a resin composition, and an optical component is provided. A polymerizable composition containing an isocyanate compound suitably used for transparent resin materials, at least one polythiol compound which may have one or more (poly)sulfide bonds in a molecule, and at least one polyhydroxy compound having two or more hydroxy groups in a molecule and/or at least one (poly)hydroxy(poly)mercapto compound having one or more hydroxy groups and one or more thiol groups is used.

Provided is a process which can be carried out upon the production of a polyurethane/thiourethane-based resin with the use of a polyisocyanate compound, a polyol compound, and a polythiol compound, without causing abrupt heat generation or viscosity increase. At least one polyol compound having at least one ether bond and two or more hydroxy groups in a molecule is used as the polyol compound, whereby a large heat generation or an abrupt viscosity increase are prevented from occurring upon blending monomer.

Polyurethane/thiourethane-based optical resin and process for producing the same

A photopolymerizable composition comprising a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound is characterized by comprising (a) a bifunctional (meth)acrylic acid (thio)ester compound containing a sulfur atom in the molecule and (b) at least one of a (meth)acrylic acid ester compound represented by the general formula (1) or a bifunctional (meth)acrylic acid ester compound having a urethane linkage: 

Photopolymerizable composition and use thereof

Aqueous ink for ink-jet recording which contains at least a water-insoluble coloring matter, water and a resin as main components and which takes the form of an emulsion, in which the coloring matter is at least one yellow hue coloring matter selected from the group consisting of a quinophthalone compound represented by the formula (1); and a pyridone azo compound represented by the formula (2); The ink is ink for ink-jet recording having excellent light resistance and storage stability, and enables formation of a high quality image without blotting, and obtained recording image is excellent in water resistance as ink for ink-jet recording.

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Omuta, Japan

Osamu Kohgo