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1. 发明专利

JP2003165997A COMPOSITION FOR DENTAL IMPRESSION TRAY-CLEANING AGENT 审中-公开
公开(公告)号：JP2003165997A
公开(公告)日：2003-06-10
申请号：JP2001365656
申请日：2001-11-30
申请人： TOKUYAMA CORP , TOKUYAMA DENTAL CORP
发明人： KATO TSUNEAKI , HARA TADASHI , AKAMATSU YASUO
IPC分类号： A61C9/00 , C11D7/10 , C11D7/12 , C11D7/18 , C11D7/32 , C11D7/38 , C11D7/60
摘要： PROBLEM TO BE SOLVED: To obtain a composition for a dental impression tray-cleaning agent capable of giving a tray-cleaning agent which exhibits excellent cleaning properties (impression material-dissolving properties) and hardly exerts corrosive effects on a dental impression tray. SOLUTION: This composition comprises a peroxyhydrate such as sodium percarbonate, sodium perborate and/or hydrogen peroxide and an azole compound such as benzothiazole. Tray-cleaning properties (impression material- dissolving properties) are enhanced by incorporating at least one metal salt selected from the group consisting of carbonate salts, hydrogen carbonate salts, phosphate salts, sulfate salts, hydrogen sulfate salts of an alkali metal such as sodium carbonate, sodium hydrogen carbonate, sodium phosphate, sodium sulfate. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2000116675A DEVICE FOR MALAXATING PASTE 失效
公开(公告)号：JP2000116675A
公开(公告)日：2000-04-25
申请号：JP29018998
申请日：1998-10-13
申请人： TOKUYAMA CORP
发明人： AKAMATSU YASUO
IPC分类号： A61C9/00
摘要： PROBLEM TO BE SOLVED: To sufficiently mix and malaxate two kinds of pastes by dividing a stirring member into upper, middle and lower sections, forming a stirring blade projecting radially in the upper and lower stirring sections and a stirring blade in the middle stirring section. SOLUTION: When mixing a dental impression material obtained by mixing a base material paste whose main component is an alginic acid and a hardening agent paste whose main component is gypsum, a stirring member 30 is rotated through a rotating shaft 24. At this time, the first and second pastes flowed out the first and second outlets 10 and 12 by a stirring blade 64 formed in an upstream stirring section of the stirring member 30 is flowed downstream, that is, to the middle non-stirring section while moving circumferentially. As this middle non-stirring section has no stirring blade and functions as an accumulating section, both pastes are mixed with each other here. Both pastes reach the downstream side stirring section and stirred by the stirring blade 66 and then discharged from the top end discharge section.

3. 发明专利

JP2001299778A PASTE FEEDING MECHANISM AND PASTE KNEADING DEVICE EQUIPPED WITH THE SAME 失效
公开(公告)号：JP2001299778A
公开(公告)日：2001-10-30
申请号：JP2000122455
申请日：2000-04-24
申请人： TOKUYAMA CORP
发明人： AKAMATSU YASUO , OKAMOTO TOMOKI , ONO TORU
IPC分类号： A61C9/00
摘要： PROBLEM TO BE SOLVED: To make a paste kneading device stably operable for a long period without causing any serious problem even air is mixed in containers though the device can be manufactured at a relatively low cost by improving the paste feeding mechanisms (4a and 4b) of the device. SOLUTION: Container accepting means (12a and 12b) which accept the containers (86a and 86b) by respectively positioning at least the main parts (90a and 90b) of the containers (86a and 86b) between two pairs of walls (26a, 26b, 30a and 30b) and wall moving means (14a and 14b) which move at least one sides of the two pairs of walls (26a, 26b, 30a and 30b) in directions in which the walls are brought nearer to and separated farther from the other walls are provided. Paste contained in the containers (86a and 86b) is fed by smashing the main sections (90a and 90b) of the containers (86a and 86b) positioned between the walls (26a, 26b, 30a and 30b).

4. 发明专利

JPH08140998A PASTE FEEDING APPARATUS 失效
公开(公告)号：JPH08140998A
公开(公告)日：1996-06-04
申请号：JP28014794
申请日：1994-11-15
申请人： TOKUYAMA CORP
发明人： YUASA SHIGEKI , AKAMATSU YASUO , KATO TSUNEAKI
IPC分类号： A61C9/00 , B01J4/00
摘要： PURPOSE: To make a paste flow out well from a container without making a remarkable amt. of the paste remain in both side edge parts, etc., of the main part of the container formed of a flexible material by improving a paste feeding apparatus. CONSTITUTION: A squeezing member 78 being mounted freely movably along the main part of a container 14 supported by means of a container supporting mechanism 12 and wherein a through-hole 92 extending slenderly in the width direction of the container 14 is formed, is provided.

5. 发明专利

JP2001112785A PASTE KNEADING DEVICE 失效
公开(公告)号：JP2001112785A
公开(公告)日：2001-04-24
申请号：JP29315299
申请日：1999-10-15
申请人： TOKUYAMA CORP
发明人： AKAMATSU YASUO , OKAMOTO TOMOKI
IPC分类号： A61C9/00
摘要： PROBLEM TO BE SOLVED: To reduce resistance against discharge of a kneaded paste so as to smoothly discharge the paste in a paste kneading device kneading a first paste and a second paste together by an action of a stirring member 30 rotationally driven when they flow through a stirring hollow part 56 in a casing 28 and discharging the kneaded paste through a discharge hollow part 58 in the casing. SOLUTION: A cross sectional shape of a casing is formed into an oblong shape with a width W1 smaller than a diameter D3 of a base part 64 in a stirring member and a length L1 longer than the diameter D3 and substantially equal to or slightly smaller than a diameter D1 of the stirring hollow part in the casing.

6. 发明专利

JPH09315924A PRODUCTION OF CURING AGENT FOR IMPRESSION MATERIAL 失效
公开(公告)号：JPH09315924A
公开(公告)日：1997-12-09
申请号：JP12821196
申请日：1996-05-23
申请人： TOKUYAMA CORP
发明人： YUASA SHIGEKI , AKAMATSU YASUO , KATO TSUNEAKI
IPC分类号： A61K6/90 , A61K6/10
摘要： PROBLEM TO BE SOLVED: To obtain a curing agent for an impression material giving a constant curing time even after the storage over a long period by applying a specific treatment to a mixture of magnesium oxide and a surfactant constituting the curing agent. SOLUTION: This curing agent is composed of calcium sulfate and/or lead silicate, a surfactant, magnesium oxide and a scarcely watersoluble liquid compound. In this composition. a mixture of at least magnesium oxide and the surfactant is heated at 40-150 deg.C, more preferably 50-80 deg.C. The necessary heating time depends upon the heating temperature and is shorter at a higher heating temperature. It is preferably selected within the range of 1hr to several days. The surfactant is preferably a nonionic surfactant such as polyoxyethylene alkyl ether and its amount is 0.1-10 pts.wt., preferably about 0.5-5 pts.wt. based on 100 pts.wt. of calcium sulfate and/or lead silicate. The amount of magnesium oxide is preferably about 5-50 pts.wt. based on 100 pts.wt. of calcium sulfate and/or lead silicate.

7. 发明专利

JPH07112910A DENTAL IMPRESSION MATERIAL 失效
公开(公告)号：JPH07112910A
公开(公告)日：1995-05-02
申请号：JP25701293
申请日：1993-10-14
申请人： TOKUYAMA CORP
发明人： AKAMATSU YASUO , KATANO CHIKAKO , YUASA SHIGEKI
IPC分类号： A61K6/90 , A61K6/10
摘要： PURPOSE:To obtain an impression material capable of suppressing growing of molds and consequently preservable without separating a powdery component in a paste from water and providing a material having high adhesion to agar with the result that a precise impression can be taken. CONSTITUTION:The characteristic of this dental impression material comprises 0.05-2.0wt.% nonaromatic carboxylate such as potassium sorbate or sodium propionate in a sterilized substrate paste in a dental impression material composed of (A) a hardening material paste consisting essentially of calcium sulfate and an organic solvent such as liquid paraffin or 1-octanol and (B) a substrate paste consisting essentially of an alginate such as sodium alginate or potassium alginate and water.

8. 发明专利

JP2003171219A IMPRESSION MATERIAL 审中-公开
公开(公告)号：JP2003171219A
公开(公告)日：2003-06-17
申请号：JP2001365655
申请日：2001-11-30
申请人： TOKUYAMA CORP , TOKUYAMA DENTAL CORP
发明人： AKAMATSU YASUO , HARA TADASHI , KATO TSUNEAKI
IPC分类号： A61K6/90 , A61K6/10
摘要： PROBLEM TO BE SOLVED: To provide an impression material which contains a slightly water-soluble liquid compound for improving the properties of the impression material, such as a tooth mold release property, in an amount of 10 to 500 pts.wt. per 100 pts.wt. of an alginate and simultaneously has a sufficient tray retention property. SOLUTION: This impression material is characterized by adding a specific organic hydroxy compound having three or more hydroxyl groups in the molecule and satisfying the following impression (1): (mol.wt.)÷(number of hydroxyl groups) COPYRIGHT: (C)2003,JPO

9. 发明专利

JP2000140600A PASTE KNEADING DEVICE 失效
公开(公告)号：JP2000140600A
公开(公告)日：2000-05-23
申请号：JP32475398
申请日：1998-11-16
申请人： TOKUYAMA CORP
发明人： AKAMATSU YASUO , ONO TORU
IPC分类号： A61C5/00 , B01F3/10 , B01F15/02 , B01F15/04 , F03B13/04 , F04B49/06
摘要： PROBLEM TO BE SOLVED: To provide an improved paste kneading device in such a manner that first paste fed by a first pump and second paste fed by a second pump reach the kneading device simultaneously and that the flow ratio of the first paste to the second is precisely controlled at a desired value. SOLUTION: By a control system, a time lag is set between the start of a first motor 26a driving a first feed pump and that of a second motor 26b driving a second feed pump, and is a certain ratio set between rotation of the first motor 26a and that of the second motor 26b, respectively.

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