Kuraray Medical Inc. Patent applications |
Patent application number | Title | Published |
20120202913 | DENTAL ADHESIVE MATERIAL KIT - The present invention provides a dental adhesive material kit having excellent bond durability. The present invention is represented by a dental adhesive material kit containing a dental aqueous adhesive composition (A) and a multi-part type dental nonaqueous curable composition (B). The dental aqueous adhesive composition (A) contains a polymerizable monomer (a) having an acidic group, an aliphatic polymerizable monomer (b) having no acidic group, water (c), and an amine-based reducing agent (d1) containing no sulfur atom. The multi-part type dental nonaqueous curable composition (B) contains an aliphatic polymerizable monomer (b) having no acidic group, an aromatic polymerizable monomer (e) having no acidic group, a powdery water-soluble reducing compound (f) containing a sulfur atom, an organic peroxide (g), and an amine-based reducing agent (d2) containing no sulfur atom. | 08-09-2012 |
20120196952 | POLYMERIZABLE COMPOSITION AND DENTAL MATERIAL - The present invention provides a polymerizable composition that is suitably used as a temporary cement for implant use and a mobile tooth-fixing material. The present invention is a polymerizable composition that includes an acrylic block copolymer (a) having at least one polymer block A that mainly contains a (meth)acrylic acid ester unit and that functions as a hard segment and at least one polymer block B that mainly contains an acrylic acid ester unit and that functions as a soft segment, a polymerizable monomer (b), and a polymerization initiator (c). | 08-02-2012 |
20120027829 | DENTIN MINERALIZING AGENT AND METHOD FOR PRODUCTION THEREOF - A dentin mineralizing agent comprising tetracalcium phosphate particles (A) and an alkali metal salt of phosphoric acid (B), wherein the dentin mineralizing agent contains the tetracalcium phosphate particles (A) in an amount of 1 to 80 parts by weight relative to 100 parts by weight of the whole amount of the dentin mineralizing agent, and the blended amount of the alkali metal salt of phosphoric acid (B) relative to 100 parts by weight of the tetracalcium phosphate particles (A) is 1 to 100 parts by weight. Thus is provided a dentin mineralizing agent by which a dense HAp is formed on a dentin surface and HAp is deposited to a deep portion of a dentinal tubule, so that it can close the dentinal tubule. | 02-02-2012 |
20120016094 | REDOX-CURING TYPE COMPOSITION - The present invention provides a redox-curing type composition that penetrates into a wet body, particularly into a tooth structure (dentin), is cured in an accelerated manner by the moisture contained in the wet body, thereby exhibits a higher bond strength than those of conventional redox-curing type compositions, and has satisfactory storage stability. The present invention is a redox-curing type composition including a polymerizable monomer (a) having an acidic group, a polymerizable monomer (b) having no acidic group, a powdery inorganic peroxide (c) with an average particle diameter of 0.01 to 50 μm, an amine-based reducing agent (d), and a polymerization accelerator (e). The amine-based reducing agent (d) includes an aromatic amine (d−1) and an aliphatic amine (d−2), and a weight ratio (d−1):(d−2) therebetween is 5:1 to 1:50. | 01-19-2012 |
20110257292 | DENTAL CURABLE COMPOSITION AND COMPOSITE RESIN USING THE SAME - The present invention provides a dental curable composition exhibiting both excellent light diffusion and excellent transparency, and having high mechanical strength and surface smoothness and gloss after polishing as a cured product as well as good handling properties as a paste. The present invention is a dental curable composition including: a polymerizable monomer (A) having a refractive index of 1.52 to 1.58 after polymerization; inorganic particles (B) having a refractive index of 1.43 to 1.50; and inorganic particles (C) having a refractive index of 1.52 to 1.58. The inorganic particles (B) are aggregates of inorganic fine particles having an average primary particle size of 2 to 50 nm, and the content of the inorganic particles (B) is 0.1 to 10% by weight. | 10-20-2011 |
20110124763 | POLYMERIZABLE COMPOSITION SUITABLE FOR LED LIGHT SOURCE - The present invention provides a polymerizable composition that exhibits high photocurability not only in the case of using a halogen lamp-curing unit but also in the case of using an LED light-curing unit, hardly has discoloration even when stored for a long time, and when applied to a dental material, a cured product of which has high bond strength to a tooth structure. The present invention is a polymerizable composition including: a photopolymerization initiator composition containing a photopolymerization initiator component consisting of only a bisacylphosphine oxide (A) and α-diketone (B), and tertiary amine (C); and a polymerizable monomer (D). A weight ratio (A):(B) between the bisacylphosphine oxide (A) and the α-diketone (B) is 1:9 to 9:1, and a weight ratio (D):(C) between the polymerizable monomer (D) and the tertiary amine (C) is 100:0.5 to 100:10. | 05-26-2011 |
20110065828 | DENTAL COMPOSITION AND COMPOSITE RESIN - A dental composition of the present invention includes: a polymerizable monomer (A); an amorphous filler (B) having an average particle size of 1 to 20 μm and including silica-based fine particles and coatings of an oxide that cover the surfaces of the silica-based fine particles; and inorganic particles (C) having an average particle size of 0.1 to 1.0 μm. The oxide contains a zirconium atom, a silicon atom, and an oxygen atom. It is preferable that the dental composition contain 50 to 400 parts by weight of the filler (B) and 100 to 400 parts by weight of the inorganic particles (C) per 100 parts by weight of the polymerizable monomer (A). | 03-17-2011 |
20110046261 | DENTAL COMPOSITION AND COMPOSITE RESIN - A dental composition of the present invention includes: a polymerizable monomer component (A); and an amorphous filler (B) having an average particle size of 1 to 20 μm and including silica-based fine particles and coatings of an oxide that cover the surfaces of the silica-based fine particles. The oxide contains a zirconium atom, a silicon atom, and an oxygen atom. The dental composition contains 20 to 500 parts by weight of the filler (B) per 100 parts by weight of the polymerizable monomer component (A). The dental composition has a viscosity of 10 to 800 Pa·s. It is preferable that the filler (B) contain spherical particles, and that the percentage of the spherical particles in the filler (B) be at least 60%. | 02-24-2011 |
20110046260 | DENTAL COMPOSITION AND COMPOSITE RESIN - The present invention provides a dental composition exhibiting both an excellent light diffusion property and excellent transparency, and having high mechanical strength and surface smoothness and gloss after polishing as a cured product and good handling properties as a paste. The present invention is a dental composition including: a polymerizable monomer (A); and an amorphous powder (B). The amorphous powder (B) has an average particle size of 1 to 20 μm, and includes silica-based fine particles and coatings of an oxide that cover the surfaces of the silica-based fine particles. The oxide contains a zirconium atom, a silicon atom, and an oxygen atom. The difference in refractive index between the cured product of the polymerizable monomer (A) and the amorphous powder (B) is 0.005 to 0.03. | 02-24-2011 |
20110003267 | DENTAL COMPOSITION - A composition for dental use containing a polymerizable monomer (a) having an aromatic ring and a hydroxyl group, a polymerizable monomer (b) having an aromatic ring without having any hydroxyl groups, and a polymerizable monomer (c) other than the polymerizable monomers (a) and (b), wherein the composition for dental use contains the polymerizable monomers (a), (b), and (c) in an amount of from 10 to 30% by weight, from 50 to 70% by weight, and from 10 to 30% by weight, respectively, of all the polymerizable monomers. The composition for dental use of the present invention can be suitably used as a product capable of substituting a part or all of a natural tooth in the field of dental therapy. | 01-06-2011 |
20100330005 | DENTAL ORAL COMPOSITION - A dental composition for oral use, containing a phosphorylated saccharide (a), a polyphosphoric acid and/or a salt thereof (b), and a cationic bactericidal agent (c), wherein a ratio of a total amount of the phosphorylated saccharide (a) and the polyphosphoric acid and/or a salt thereof (b) contained to an amount of the cationic bactericidal agent (c) contained, i.e. {(a)+(b)}/(c), is from 0.05 to 20 in a weight ratio. The dental composition for oral use of the present invention can be suitably used for an oral cavity cleaning agent, including dentifrice agents such as a paste dentifrice agent, a powder dentifrice agent, and a liquid dentifrice agent, a mouse-wash agent, a troche, a tablet, a cream, an ointment, a bonding agent, a mouth spray, a coating agent to tooth surface or a dental prosthetic, a hypersensitive inhibitor, a therapeutic agent for periodontal diseases, that is applied to a periodontal pocket, wet tissue for oral cavity care, an oral refreshing agent, chewing gum, or a gargling agent, or the like. | 12-30-2010 |
20100323022 | CALCIUM PHOSPHATE COMPOSITION AND PROCESS FOR PRODUCTION THEREOF - A calcium phosphate composition comprising calcium phosphate particles (A) and a sulfonic acid salt (B), wherein the calcium phosphate composition contains 0.5 to 20 parts by weight of the sulfonic acid salt (B) based on 100 parts by weight of the calcium phosphate particles (A). This provides a calcium phosphate composition that has a time between the addition of a liquid agent to the calcium phosphate composition and the completion of setting in the use at a clinical site and the like, i.e., a setting time which is within an appropriate range and that is high in mechanical strength and good in marginal sealing ability. | 12-23-2010 |
20100267856 | CEMENT FOR DENTAL APPLICATIONS - A cement for dental use, containing a first agent and a second agent, wherein both of the first agent and the second agent contain a polymerizable monomer (a) and a filler (b), wherein the first agent and/or the second agent further contains a photopolymerization initiator (c), wherein further as a chemical polymerization initiator (d), either one of the first agent and the second agent contains an oxidizing agent (f) and the other contains a reducing agent (g), the oxidizing agent (f) and the reducing agent (g) constituting a redox polymerization initiator, wherein the photopolymerization initiator (c) contains an α-diketone, and the photopolymerization initiator (c) is contained in a total amount of from 0.010 to 0.100 parts by weight, based on 100 parts by weight of the total amount of the polymerizable monomer (a), wherein the chemical polymerization initiator (d) is contained in a total amount of from 0.001 to 20 parts by weight, based on 100 parts by weight of the total amount of the polymerizable monomer (a), and wherein a cured product has a compression modulus immediately after photocuring of from 100 to 400 MPa, and a compression modulus after 24 hours from photocuring of 500 MPa or more. The cement for dental use of the present invention is suitably used for adhering the dentine and a crowning restorative material in the field of dental therapy, or the like. | 10-21-2010 |
20100240798 | REDOX-CURING TYPE NONAQUEOUS CURABLE COMPOSITION - The present invention relates to processes of making a cured dental adhesive compositions, in contact with a wetting material surface, by contacting the wetting material surface having water present on the surface with a nonaqueous composition including at least one liquid radical polymeric monomer (a), an organic peroxide (b), and a water-soluble reducing compound (c) in the form of a solid, where the water-soluble reducing compound (c) is dispersed in the liquid radical polymeric monomer (a); and solvating the water-soluble reducing compound (c) present at an interface between the redox-curing nonaqueous curable composition and the wetting material with the water present on the wetting material surface. | 09-23-2010 |
20100236449 | CALCIUM PHOSPHATE COMPOSITION AND PROCESS FOR PRODUCING THE SAME - A calcium phosphate composition comprising tetracalcium phosphate particles (A), calcium hydrogen phosphate particles (B) and at least one kind of inorganic particles (C) selected from silica particles or titania particles, wherein the mixing ratio (A/B) of (A) to (B) is from 45/55 to 55/45 in molar ratio, the inorganic particles (C) have an average particle diameter of from 0.002 to 0.5 μm, and the inorganic particles (C) are contained in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of (A) and (B) in total. Thereby provided is a calcium phosphate composition such that when it is used as a material for bone repair, a formed bone has high mechanical strength and a high bone replacement rate is achieved. | 09-23-2010 |
20100130682 | POLYMERIZABLE MONOMER, POLYMERIZABLE COMPOSITION, AND DENTAL MATERIAL - The present invention provides a polymerizable composition that exhibits excellent adhesive properties to a tooth structure (particularly dentin) when applied as a dental material, and a polymerizable monomer that is used as a component of the polymerizable composition. The present invention is a polymerizable monomer (A) that is a compound having at least two polymerizable groups. The polymerizable monomer (A) has a retention time of 7 minutes to 30 minutes in a high-performance liquid chromatography (HPLC) measurement conducted under a condition in which a column with an inner diameter of 3.9 mm and a length of 300 mm, packed with a C18 packing material having been crushed to have an average particle size of 10 μm and a pore size of 125 angstroms, is used, an eluent is a mixed solvent of methanol and water contained at a ratio of 3:7, a flow rate is 1.0 mL/minute, a measurement temperature is 50° C., a sample injection volume is 10 μL, and a dead volume from a sample inlet to a detection point excluding the column is 87 μL. The present invention also is a composition containing the polymerizable monomer (A). | 05-27-2010 |
20100105802 | CURABLE COMPOSITION FOR DENTAL PURPOSES - A curable composition for dental use, containing a polymerizable monomer, inorganic particles (A) having irregular shapes and an average particle size of from 1.0 to 5.0 μm, wherein the inorganic particles (A) are surface-treated with a silane coupling agent (a) represented by the formula (I): | 04-29-2010 |
20100089843 | DOUBLE FILTRATION BLOOD PURIFICATION APPARATUS AND METHOD OF PRIMING THEREFOR - To provide a double filtration blood purification apparatus that can be primed while generation of bubbles within each of a separating membrane in both of a blood component separator and a plasma component separator is avoided and also to provide a method of priming such blood purification apparatus. A cleansing liquid introducing passage | 04-15-2010 |
20100089837 | BLOOD PURIFICATION APPARATUS AND METHOD OF CONFIRMING CIRCUIT CONTINUITY FAILURE THEREOF - A blood processing apparatus in which whether or not circuit components are connected is ascertained, and a method of ascertaining a failure in such circuit connection is provided. By closing a blood return valve, disposed in a blood return passage for returning a blood, processed in a first blood processing unit, to patient's body, blocking a blood circuit including a blood introducing passage, the blood return passage and a delivery passage for delivering unnecessary blood component from the first blood processing unit, driving a first pump in the delivery passage in normal direction, and driving an air pump, fluidly connected with the blood introducing passage and the blood return passage, in reverse direction to discharge air from the circuit to generate negative pressure inside the circuit and the first blood processing unit, connection between the circuit and the first blood processing unit is ascertained. | 04-15-2010 |
20100087613 | DIVIDED REDOX-CURING TYPE COMPOSITION - The present invention provides a divided redox-curing type composition including a first part in which at least an oxidizing agent (b) is dissolved in a first radical monomer including a radical monomer (a) having an acidic group and/or a hydrophilic group; and a second part in which at least an aromatic sulfinate (d) is dispersed in a second radical monomer including a radical monomer (c) having neither an acidic group nor a hydrophilic group. According to the present invention, a redox-curing type composition capable of securing a time necessary for an adhesion operation and exhibiting high bond strength not only at the initial stage of adhesion but also over a long period of time thereafter in application to a wetting material such as a tooth or a bone as well as a tooth crown repairing material such as a metal or porcelain. | 04-08-2010 |
20100076157 | NOVEL COMPOUND, COMPOSITION COMPRISING THE SAME, AND PROCESS FOR PRODUCTION OF POLYMERIZABLE AMIDE - A novel compound (I) represented by the following formula (1) is provided which is suitable for a dental composition and has a polymerizable group, a carboxyl group and a phosphoric acid group. A method for producing a polymerizable amide is provided, which method can make a condensation reaction of a carboxylic acid with an amine to proceed easily and is excellent in safety: wherein R | 03-25-2010 |
20100056665 | POLYMERIZABLE MONOMER, POLYMERIZABLE COMPOSITION AND DENTAL MATERIAL - The present invention provides a polymerizable composition that imparts excellent adhesive properties with respect to tooth structure (particularly dentin) when applied as a dental material, and provides a polymerizable monomer that is used as a component of the polymerizable composition. The present invention is a compound (A) that is a compound represented by the following formula (1): where G indicates a polymerizable group, m indicates an integer of 2 or more, n indicates an integer of 1 or more, and the sequence order of m units having a polymerizable group and n units having a hydroxyl group is arbitrary. The present invention also is a polymerizable composition containing the compound (A). | 03-04-2010 |
20100048762 | COMPOSITION AND DENTAL MATERIAL - The present invention provides a composition that exhibits excellent adhesive properties to tooth structure (particularly dentin) when applied as a dental material. The present invention is a composition containing a polymerizable monomer (A) having an unconjugated carbon chain with at least four carbon atoms bonded continuously, at least two polymerizable groups, and at least two hydroxyl groups, and a bisacylphosphine oxide (B) represented by the following formula (1): | 02-25-2010 |
20100048761 | POLYMERIZABLE MONOMER-CONTAINING COMPOSITION - The present invention provides a composition suitable for a dental composition. The present invention is a composition containing: a polymerizable monomer (A) having an unconjugated carbon chain with at least four carbon atoms bonded continuously, at least two polymerizable groups, and at least two hydroxyl groups; and a water (B). The composition contains 6 to 2000 parts by weight of the water (B) with respect to 100 parts by weight of the whole amount of polymerizable monomer components. When suitable components are added to this composition, the resultant composition can be used suitably for dental materials such as a primer, bonding material, composite resin, and cement. | 02-25-2010 |
20100036075 | POLYMERIZABLE MONOMER-CONTAINING COMPOSITION - The present invention provides a composition suitable for a dental composition. The present invention is a composition containing: a polymerizable monomer (A) having an unconjugated carbon chain with at least four carbon atoms bonded continuously, at least two polymerizable groups, and at least two hydroxyl groups; and a polymerizable monomer (B) having one polymerizable group and at least one hydroxyl group. When a suitable component is added to this composition, the resultant composition can be used suitably for dental materials such as a primer, bonding material, composite resin, and cement. | 02-11-2010 |
20090289084 | VISCOUS MATERIAL EXTRUDING DISPENSER - There is provided a dispenser in which an operation load of a plunger is stable and contents of the dispenser do not leak out after pressing operation is interrupted. The invention provides a dispenser comprising a syringe body ( | 11-26-2009 |
20090068123 | FLUORINE ION-RELEASABLE COMPOSITION FOR DENTAL PURPOSES - The invention provides a fluoride ion releasing dental composition including an inorganic powder (a); a fluoride ion releasing material (b); a monomer (c); and a polymerization initiator (d), in which the inorganic powder (a) is made of composite particles in which a layer of polysiloxane is formed on surfaces of substrate particles made of an inorganic material, and the fluoride ion releasing material (b) is at least one fluoride ion releasing material selected from the group consisting of ammonium fluoride, ammonium hydrogen fluoride, a metal fluoride, a polymer including, as a constitutional unit, a vinyl monomer having an acid fluoride group and a fluorine-containing phosphazene monomer. | 03-12-2009 |
20090023856 | ADHESIVE COMPOSITION - The invention provides an adhesive composition including a specific phosphate group-containing monomer (a) having a fluorocarbon group, and a solvent (b). | 01-22-2009 |