Mitsui Chemicals, Inc.

Shofu Inc.

Sun Medical Co., Ltd.

Yamamoto Chemicals, Inc.

Hiroshi Naruse

Atsuo Otsuji

Mitsuo Nakamura

Osamu Kohgo

Shinya Aoki

Noriaki Asada

Yoshimitsu Tanabe

Masao Imai

Masami Arata

Mitsuji Teramae

Kazuhiko Yoshinaga

Shunsuke Miyata

Hidefumi Fujimura

Shinichi Usugi

Kiyomi Fuchigami

Masataka Miyasato

Masuji Tsuchikawa

Hideyuki Ueki

Chidzuru Inami

Shoichi Miyakoshi

Hirofumi Imai

Kenichi Fujii

Seiichi Kobayashi

Tsutami Misawa

Hidetoshi Hayashi

Masaru Kawaguchi

Yoshiyuki Totani

Yoriaki Matsuzaki

Shinsuke Ito

Kazuya Sakata

Masahiro Enna

Yusuke Matsui

Kenju Sasaki

Hideki Yamamoto

Ryoji Yamaguchi

Bunji Sawano

Yojirou Kumagae

Daisuke Kakio

Provided is a benzotriazole compound represented by Formula (1). In Formula (1), Rto Rrepresent substituents. In Formula (1), n1 represents an integer from 0 to 4, and n2 represents an integer from 0 to 3.

Benzotriazole compound, light absorber, and resin composition

Provided are dental polymerizable monomer compositions that can give cured products having high toughness and high rigidity, and dental compositions containing such dental polymerizable monomer compositions and cured products thereof having high mechanical properties. The dental polymerizable monomer composition includes a urethane acrylate compound (A) and a polymerizable compound (B) having at least one polymerizable group selected from methacryloyl groups and acryloyl groups, the urethane acrylate compound (A) being obtained by reacting a specific hydroxyacrylate (a1) with a diisocyanate (a2) having two isocyanate groups bonded to a divalent Caromatic hydrocarbon group or a divalent Cbridged cyclic hydrocarbon group via a methylene group optionally substituted with a hydrocarbon group in place of a hydrogen atom, the proportion of the number of acryloyl groups present in the urethane acrylate compound (A) being 10% to less than 90% relative to the total number of (meth)acryloyl groups in the monomer composition.

Dental polymerizable monomer compositions

Provided are dental polymerizable monomers that can give cured products having high toughness and high rigidity, dental polymerizable monomer compositions containing the polymerizable monomers, and dental compositions containing the dental polymerizable monomer compositions, and cured products thereof having high mechanical properties. The dental polymerizable monomer (A) which includes a urethane acrylate obtained from an appropriately rigid diisocyanate and an appropriately flexible hydroxyacrylate is used to prepare a dental polymerizable monomer composition containing the dental polymerizable monomer, and a dental composition containing the dental polymerizable monomer composition.

Dental polymerizable monomers

A three-component mixing apparatus and a three-component mixing adhesive kit, which allow anyone to easily and uniformly mix three kinds of drugs in mixing a three-component adhesive used in, e.g., surgical procedure (or treatment) or dental procedure (or treatment), includes a syringe filled with a first drug; a plunger; and an infusion-needle connector having a connecting part for a second drug container and a connecting part for a third drug container and a confluent path formed on a base end part. The first drug, the second drug and the third drug are mixed in the syringe by removably attaching the infusion-needle connector to a discharge opening of the syringe, the second drug container to its connecting part and the third drug container to its connecting part and then pulling the plunger inserted into the syringe to introduce the second drug and the third drug into the syringe.

Three-component mixing apparatus and three-component mixing adhesive kit

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

The adhesive composition for soft tissues, the adhesive composition for wound dressing or the wound dressing agent composition of the present invention is an adhesive composition for soft tissues, an adhesive composition for wound dressing or a wound dressing agent composition, comprising a monomer (A), a polymer (B) and a polymerization initiator composition (C) containing an organoboron compound, and is characterized by having a viscosity of 0.4 to 75,000 cp within 30 seconds after mixing of the components (A), (B) and (C). The composition of the present invention not only has low toxicity, low harmfulness and high adhesive strength but also is excellent in workability during application and is capable of forming films of excellent properties.

Adhesive composition for soft tissues, adhesive composition for wound dressing or wound dressing composition

The composition for hard tissue repair of the present invention is characterized by comprising 5 to 98.95 parts by weight of a monomer (A), 1 to 75 parts by weight of a (meth)acrylate polymer (B) and 0.05 to 20 parts by weight of a polymerization initiator composition (C) containing an organoboron compound (c1), with the proviso that the total amount of the components (A), (B) and (C) is 100 parts by weight. The composition undergoes small-scale heat generation during curing and can ensure a sufficient working time.

Composition for hard tissue repair

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

Polymerizable composition, and resin and optical part using the same

The present invention is to provide a polymerizable compound which can be a raw material for a resin having high transparency, good heat resistance and mechanical strength required for optical components such as plastic lenses and the like, while attaining a high refractive index (nd) exceeding 1.7, and an optical component composed of such a resin. Disclosed is a compound represented by the general formula (3), wherein, in the formula, M represents a metal atom; Xand Xeach independently represent a sulfur atom or an oxygen atom; Rrepresents a divalent organic group; m represents an integer of 0 or 1 or more; p represents an integer of from 1 to n; q represents an integer of from 1 to (n&#x2212;p); n represents a valence of a metal atom M; Yq each independently represent an inorganic or organic residue; and when q is 2 or more, Yq may be bonded to one another for forming a ring structure with the intermediary of a metal atom M.

Polymerizable compound and use thereof

A compound having two or more thiol groups and an atom selected from metal atoms in a molecule, a polythiol composition containing such a compound, a polymerizable composition containing such a polythiol composition, a resin obtained by polymerization of such a polymerizable composition, and an optical component obtained from such a resin are provided. The polymerizable composition can be a raw material for a resin having high transparency, good heat resistance and mechanical strength required for optical components such as plastic lenses and the like, while attaining a high refractive index (nd) exceeding 1.7.

Metal-containing compound and use thereof

Disclosed is a polymerizable composition containing a compound represented by the following general formula (1), 

Polymerizable composition, resin using the same, optical component and compound

The present invention is to provide a polymerizable compound which can be a raw material for a resin having high transparency, good heat resistance and mechanical strength required for optical components such as plastic lenses and the like, while attaining a high refractive index (nd) exceeding 1.7, and an optical component composed of such a resin. Disclosed is a compound represented by the general formula (3), wherein, in the formula, M represents a metal atom; Xand Xeach independently represent a sulfur atom or an oxygen atom; Rrepresents a divalent organic group; m represents an integer of 0 or 1 or more; p represents an integer of from 1 to n; q represents an integer of from 1 to (n-p); n represents a valence of a metal atom M; Yq each independently represent an inorganic or organic residue; and when q is 2 or more, Yq may be bonded to one another for forming a ring structure with the intermediary of a metal atom M.

Growing community of inventors

Chiba, Japan

Hiroshi Naruse