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11. 发明专利

JPH02275777A CERAMIC MATERIAL SUCH AS PORCELAIN, ITS PRODUCTION AND CALCINATION FURNACE 失效
公开(公告)号：JPH02275777A
公开(公告)日：1990-11-09
申请号：JP9664689
申请日：1989-04-17
申请人： SUMITOMO CEMENT CO
发明人： TAKAGI SHIGEHARU , MIZUTANI KOZO , OKU TAKASHI , SHIGERU KEIJIRO , KUBOTA YOSHIFUMI
IPC分类号： H05B6/64 , C04B35/64
摘要： PURPOSE:To easily produce a ceramic material such as porcelain even at home by producing an aqueous slurry from a powdery mixture of Ca phosphate, coating the slurry to a material having the shape of the objective article or filling the slurry into the material, placing the product in a cylindrical sintered silicon carbide and hardening the slurry by the irradiation of microwave to the sintered material. CONSTITUTION:For example, in the production of a porcelain with a calcination furnace 1 for ceramic such as porcelain, a formed article produced from the above slurry is placed, before baking, in a sintered material 3 of silicon carbide. A container 2 containing the above assembly is put into a microwave oven 7 for domestic use, etc., and the microwave radiated from a microwave radiation device is absorbed to the sintered material 3 in the container 2. The sintered material 3 is heated by this process and the formed article is calcined by the heat radiating from the sintered material to obtain a ceramic material such as porcelain. The powdery mixture of the phosphates is a mixture of alpha-type tricalcium phosphate and tetracalcium phosphate.

12. 发明专利

JPH02274257A LAMINATE TYPE POROUS CHITIN MATERIAL AND ITS MANUFACTURE 失效
公开(公告)号：JPH02274257A
公开(公告)日：1990-11-08
申请号：JP9535289
申请日：1989-04-17
申请人： SUMITOMO CEMENT CO
发明人： TAKAGI SHIGEHARU , KIMITA MICHIO , JITSUZAWA KOJI
IPC分类号： A61F13/00 , A61L15/16 , A61L27/00
摘要： PURPOSE:To obtain a texture and structure suitable to the use as water-holding material and wound coating material by forming a porous layer formed of a three-dimensional net structure having continuous holes and a non-porous thin film layer formed on at least one surface of the porous layer and consisting of chitin. CONSTITUTION:The material is formed of a porous chitin layer and a chitin non-porous thin film layer formed on and bonded to at least one surface of the porous layer. The chitin porous layer has three-dimensional net continuous holes, and the nonporous thin film layer consisting of chitin is a homogeneous layer substantially having no or less continuous hole, which has a density higher than the porous layer. The thicknesses of the porous layer and non-porous layer are suitably determined according to the use and necessary performance of chitin materials, and in general, those having thicknesses of 0.1 to 50mm and densities of 0.005 to 0.15 g/cm are preferred as the porous layer, and those having thicknesses of 0.3 to 100mum and densities of 0.8 to 1.3g/cm as the non- porous layer. Hence, those useful as water-holding material, wound coating material and filtering material can be obtained.

13. 发明专利

JPH02227048A CALCIUM SUPPLYING AGENT FOR FOOD 失效
公开(公告)号：JPH02227048A
公开(公告)日：1990-09-10
申请号：JP4660189
申请日：1989-03-01
申请人： SUMITOMO CEMENT CO
发明人： KUBOTA YOSHIFUMI , SHIGERU KEIJIRO , OKU TAKASHI , TAKAGI SHIGEHARU
IPC分类号： A23L1/304
摘要： PURPOSE:To obtain a calcium supplying agent for food effective for providing with calcium as an ion to be readily absorbed in human body together with a phosphate by using both a calcium phosphate component and a carboxylic acid component as main components. CONSTITUTION:A calcium phosphate component in a solid state, preferably in a powdery state comprising at least one selected from alpha-type tricalcium phosphate and tetracalcium phosphate is blended with an aqueous solution of a carboxylic acid component comprising at least one selected from citric acid, malic acid, gluconic acid and lactic acid and solidified.

14. 发明专利

JPS60150756A BONE FORMATION INDUCING MATERIAL 失效
公开(公告)号：JPS60150756A
公开(公告)日：1985-08-08
申请号：JP572984
申请日：1984-01-18
申请人： SUMITOMO CEMENT CO , YAMAUCHI SHIGERU
发明人： TAKAGI SHIGEHARU , YAMAUCHI SHIGERU , OKU TAKASHI
IPC分类号： A61L27/00 , A61F2/28

15. 发明专利

JPS60142857A BONE CEMENT COMPOSITION 失效
公开(公告)号：JPS60142857A
公开(公告)日：1985-07-29
申请号：JP24722683
申请日：1983-12-29
申请人： SUMITOMO CEMENT CO , YAMAUCHI SHIGERU
发明人： TAKAGI SHIGEHARU , YAMAUCHI SHIGERU , OKU TAKASHI
IPC分类号： C04B38/00 , A61F2/28 , A61L24/00 , A61L27/00

16. 发明专利

JPS6090880A CALCIUM PHOSPHATE POROUS BODY AND MANUFACTURE 失效
公开(公告)号：JPS6090880A
公开(公告)日：1985-05-22
申请号：JP19821483
申请日：1983-10-25
申请人： SUMITOMO CEMENT CO , YAMAUCHI SHIGERU
发明人： TAKAGI SHIGEHARU , YAMAUCHI SHIGERU , OKU TAKASHI
IPC分类号： C04B38/00 , A61L27/00 , C01B25/32

17. 发明专利

JPH02307846A HIGH-STRENGTH CALCIUM PHOSPHATE CEMENT COMPOSITION 失效
公开(公告)号：JPH02307846A
公开(公告)日：1990-12-21
申请号：JP12778089
申请日：1989-05-23
申请人： SUMITOMO CEMENT CO
发明人： SHIGERU KEIJIRO , KUBOTA YOSHIFUMI , OKU TAKASHI , TAKAGI SHIGEHARU , MIZUTANI KOZO
IPC分类号： C04B12/02 , C04B28/34
摘要： PURPOSE:To obtain the high-strength calcium phosphate cement composition excellent in preservability, heat resistance and vital compatibility by specifying the composition consisting of alpha-tricalcium phosphate, tetracalcium phosphate and polyalkylene glycol. CONSTITUTION:The ratio of the total calcium content in the alpha-calcium phosphate and tetracalcium phosphate to the phosphoric acid content is controlled to 1.5:1-2.0:1 in the composition contg. alpha-tricalcium phosphate, tetracalcium phosphate and polyalkylene glycol. The content of the alkylene glycol is controlled to 0.1-2% of the total amt. of the alpha-calcium phosphate and tetracalcium phosphate. The high-strength calcium phosphate cement composition thus obtained can be water-hardened as the aq. soln. contg. 0-95wt.% polyalkylene glycol.

18. 发明专利

JPH02268766A CHITOSAN POROUS LAMINATED MATERIAL AND PREPARATION THEREOF 失效
公开(公告)号：JPH02268766A
公开(公告)日：1990-11-02
申请号：JP9053589
申请日：1989-04-12
申请人： SUMITOMO CEMENT CO
发明人： TAKAGI SHIGEHARU , KIMITA MICHIO , JITSUZAWA KOJI
IPC分类号： A61L15/16 , B32B5/18 , C08B37/08 , C08J9/28 , C08L5/00
摘要： PURPOSE:To obtain a laminated material with non-porous properties and porous properties by constituting it of a porous layer consisting of chitosan and constituted of a three dimensional network structure with three dimensional network open-cell and a non-porous thin film layer consisting of chitosan. CONSTITUTION:A chitosan acidic aq. soln. is prepd. by dissolving chitosan in an acid aq. soln. and a part of said chitosan acidic aq. soln. is extended into a sheet, which is freeze-dried to form a porous sheet of a chitosan salt. Separately, the remaining part of the chitosan acidic aq. soln. is extended into a thin film, which is dried by evaporation to form a non-porous chitosan salt thin film. While the non-porous chitosan salt thin film is not completely dried or after one face of the dried thin film is made damp with water and it is laminated and adhered on one face of the porous sheet of chitosan salt. The laminated body is neutralized by treating it with an alkali aq. soln. to insolubilize thereby the laminated body in water and the obtd. water-insoluble chitosan laminated body is dried. The chitosan laminated material consists of the non-porous thin film layer and the porous sheet layer and is useful for a covering material of a wound and can be also used for such applications as a water retention agent and a filtering material.

19. 发明专利

JPH02207010A HIGH-TEMPERATURE INVESTMENT MATERIAL FOR DENTAL CASTING 失效
公开(公告)号：JPH02207010A
公开(公告)日：1990-08-16
申请号：JP2675589
申请日：1989-02-07
申请人： SUMITOMO CEMENT CO
发明人： TAKAGI SHIGEHARU , OKU TAKASHI , SHIGERU KEIJIRO , KUBOTA YOSHIFUMI
IPC分类号： A61K6/00 , A61K6/838
摘要： PURPOSE:To obtain the subject investment material, capable of precisely expressing shape and surface conditions of prototypes and excellent in high- temperature stability by using alpha type tricalcium phosphate and tetracalcium phosphate prepared by thermally decomposing specific calcium phosphate at a high temperature as a binding material. CONSTITUTION:A high-temperature investment material for dental casting, obtained by using alpha type tricalcium phosphate and tetracalcium phosphate prepared by thermally decomposing a calcium phosphate compound at 1.5-2.0 molar ratio of calcium to phosphorus at a high temperature of >=1200 deg.C as a binding material and used in preparing dental prostheses, such as crown, inlay or onlay, by precise casting. A binder material prepared by pulverizing the calcium compound to 10-30mum average particle diameter and 88mum maximum particle diameter and grading the particles is preferably used as the binding material. The investment material is prepared by adding 10-50 pts.wt. at least one of water and aqueous solutions containing an acid and salt as a kneading liquid to 100 pts.wt. binding material.

20. 发明专利

JPH02184548A TILE COMPOSITION 失效
公开(公告)号：JPH02184548A
公开(公告)日：1990-07-19
申请号：JP377489
申请日：1989-01-12
申请人： SUMITOMO CEMENT CO
发明人： SHIGERU KEIJIRO , KUBOTA YOSHIFUMI , OKU TAKASHI , TAKAGI SHIGEHARU , MIZUTANI KOZO
IPC分类号： C04B12/02 , C04B35/447
摘要： PURPOSE:To bake with glazing without calcining process by mixing water or aqueous solution of specific acid (salt) into mixed powder of alpha-tricalcium phosphate and tetracalcium phosphate, molding and curing. CONSTITUTION:Apatite containing 1.5-2.0 molar ratio of calcium and phosphoric acid is baked at >=1200 deg.C to obtain cement composition composed of mixed powder of alpha-tricalcium phosphate [alpha-Ca3[PO4]2] and tetracalcium phosphate [Ca4O[PO4]2]. Silica, alumina, magnesia, zirconia or calcia, etc., is occasionally added to resultant cement and mixed with water to form slurry, then cast in frame mold, thus molded and cured. Then, glaze is applied to resultant cured molded article and the article is baked to afford a tile. Besides, in mixing with water, said water is previously contained phosphoric acid, sulfuric acid or salt of said acid and curing reaction is accelerated. Furthermore, silica or alumina, etc., is added to the cement composition to increase strength of tile and improve adhesion between substrate of tile and glaze.

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