Sun Medical Co., Ltd.

Mitsui Chemicals, Inc.

Other

Mitsui Petrochemical Industries, Ltd.

Nakabayashi, Nobuo

Masami Arata

Takashi Yamamoto

Weiping Zeng

Harumi Tanaka

Tsuyoshi Banba

Tatsuya Ori

Yasukazu Saimi

Yoshiaki Katsura

Takeshi Sakashita

Yoshimitsu Tanabe

Shinya Aoki

Nobuo Nakabayashi

Hiroshi Naruse

Kazuhiko Yoshinaga

Shinsuke Kinoshita

Takenori Mitamura

Narimichi Honda

Hiroki Murai

Akari Yamamoto

Masuji Tsuchikawa

Noriaki Asada

Sayaka Miyamori

Isao Hashimoto

Shoichi Miyakoshi

Takeshi Yokoyama

Yoshihisa Kamimoto

Hirohisa Shimizu

Hideyuki Ueki

Yuya Yamamoto

Tamaki Otsuki

Maho Yoshikawa

Yasuhiro Nukii

Toshiki Ono

Tamotsu Tomikawa

Haruka Otsuki

Eizo Sueoka

Hiroshi Nishimura

The present invention improves the long-term storage stability of a polymerizable composition including an organoborane and a polymerizable monomer. A polymerizable composition includes (A) an organoborane, (B) an acidic group-free polymerizable monomer, and (C) a stabilizer for the organoborane (A), the composition being such that when the composition, after being allowed to stand at 45&#xb0; C. for 48 hours, is analyzed with an E-type viscometer at a temperature of 25&#xb0; C. and a rotational speed of 50 rpm, the ratio of the viscosity after the standing to the viscosity before the standing (viscosity after standing/viscosity before standing) is less than 100.

Polymerizable composition and kit, and polymerization initiator

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.

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

An easily removable dental curable composition which prevents the fall or leakage of a temporary prosthetic appliance or a root canal filling material which is easily removed by bonding and adhering it to tooth, shows such high flowability that its operation is easy, has a long working time and excellent X-ray contrast properties and sealability and can be easily removed as required, and a filling kit. The dental curable composition comprises (A) a polymerizable monomer mixture containing a polymerizable monomer having an acid group in the molecule and (B) a polymerization initiator, wherein the component (A) contains (A') a long-chain polymerizable monomer having a structure with a chain length of 17 or more atoms and/or the composition further comprises (D1) a soft resin material.

Easily removable dental curable composition

The present invention provides a dental polymerizable composition which has excellent handling property by the brush-dip technique and the bulk-mix technique, particularly excellent handling property by the brush-dip technique, contains few air bubbles, is excellent in color tone, polishability, mechanical properties and the discoloration resistance of a cured product at the time of curing and is used for many purposes such as the repair of a denture base or artificial tooth, a tooth crown prosthetic restoration and a temporary prosthetic restoration which is used until a bridge is completed when it is a two-composition type self-curing resin. The dental polymerizable composition comprises three different types of (meth)acrylate polymer particles, each having specific particle size characteristics and specific molecular weight characteristics.

Dental polymerizable composition and kit therefor

A reaction-curable adhesive composition exhibiting acidity is formed form a weakly acidic to alkaline composition (I) comprising (a) a polymerizable monomer and (b) a compound represented by the following formula (I) and a strongly acidic composition (II) comprising (a) a polymerizable monomer.R&#x2014;CH&#x2014;NRCHCOOR&#x2003;&#x2003;(1)wherein Rand Rare each independently a hydrogen atom or an alkyl group which may have a functional group, and Ris a hydrogen atom or a metal atom. The composition containing the polymerizable monomer can be stably stored for a long period of time.

Reaction-curable adhesive composition and dental adhesive kit

A dental self-etching primer composition and a dental self-etching primer kit comprising a mixture of (A) a polymerizable monomer, (B) a reducing inorganic compound containing sulfur, (C) a ketone-based solvent and (D) water and having a storage stability of 2 hours or longer at 65&#xb0; C.

Dental self-etching primer composition

A kit for dental adhesive comprising a radical polymerizable monomer having an acid group in the molecule, a photosensitizer and/or a peroxide, a water-soluble organic solvent, an organic sulfinic acid and/or a salt thereof or a barbituric acid and/or a derivative thereof, and water. The kit may further comprises a radical polymerizable monomer which has no acid group and is insoluble or hardly soluble in water, an amine compound, a silane coupling agent and a 1,3,5-triazine-2,4-dithion derivative. By using this kit, the adhesive composition can be applied directly to a dentine without conducting a pretreatment.

Dental adhesive kit

A dropping container includes a cylindrical body, a dropping portion having a pressure valve for closing an opening in the dropping container body such that it can be opened by pressure and a thin tube which is open to the outside. The pressure valve includes a sealing plug portion formed of an elastic body or a rigid body and a pressing member, formed of an elastic body, for pressing the sealing plug portion against the opening to close the opening, a movable plug supplies the content of the cylindrical body to the dropping portion.

Dropping container

A curable dental adhesive composition of the type including polymerizable monomer and polymerization initiator may be easily prepared and applied to a tooth surface by using a tool which includes fibrous or sponge material, adapted to fit within a person's mouth, and carrying at least part of the polymerization initiator. Polymerizable monomer and any remaining polymerization initiator as well as filler and other ingredients may be brought into contact with the tool to form the curable composition just prior to applying the composition to the tooth surface. The tool may be part of a kit which also includes a container for polymerizable monomer and, as necessary, one or more additional containers for remaining polymerization initiator(s), fillers, etc. No separate mixing container is required.

Primer composition and curable composition

A polymerization initiator composition comprising 100 parts by weight of an organic boron compound (A) and 10 to 150 parts by weight of an aprotic solvent (B) having a boiling point of 30 to 150.degree. C.; and a dental or surgical adhesive composition containing the above polymerization initiator composition.

Dental or surgical adhesive and polymerization initiator composition for

Dental composition for dentin hypersensitivity

A polymerization initiator composition comprising 100 parts by weight of an organic boron compound (A) and 10 to 150 parts by weight of an aprotic solvent (B) having a boiling point of 30.degree. to 150.degree. C.; and a dental or surgical adhesive composition containing the above polymerization initiator composition.

Growing community of inventors

Moriyama, Japan

Masami Arata