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1. 发明授权

US3909449A Method for the production of activated carbon spheres 失效
标题翻译：生产活性炭球的方法
公开(公告)号：US3909449A
公开(公告)日：1975-09-30
申请号：US46360274
申请日：1974-04-24
申请人： KUREHA CHEMICAL IND CO LTD
发明人： NAGAI HIROSI , KATORI KUNIHIKO , SHIIKI ZENYA , AMAGI YASUO
IPC分类号： C01B32/336 , B01D53/02 , B01J20/20 , B01J21/18 , B01J35/08 , B01J37/00 , C01B32/384 , B01D15/00 , F01N3/00
CPC分类号： B01J21/18 , B01D53/02 , B01J35/08 , B01J37/0018 , C01B32/384
摘要： Spheres of activated carbon are obtained by melting and mixing 100 parts by weight of pitch with 10 to 50 parts by weight of an aromatic solvent compatible with said pitch and 0.01 to 1 part by weight of a metal compound, molding the resultant molten mixture to form a plurality of spheres, immersing the formed spheres in an organic solvent which is compatible with said aromatic solvent and destitute of affinity for said pitch to extract said aromatic solvent from said spheres, infusibilizing the resultant porous pitch spheres having micro-pores and thereafter activating the porous pitch spheres in an atmosphere of ammonia gas at the temperature of 550 to 1000*C. The activated carbon spheres thus produced are particularly useful as activated carbon for the desulfurization of a sulfurous acid gas-containing combustion exhaust gas and for treatment of waste liquor from a sulfite pulp process.
摘要翻译：通过将100重量份沥青与10至50重量份与所述沥青相容的芳族溶剂和0.01至1重量份的金属化合物熔融并混合获得活性炭球，将所得熔融混合物成型多个球体，将形成的球体浸入与所述芳族溶剂相容的有机溶剂中，并且不利于所述沥青从所述球体萃取所述芳族溶剂，使所得的具有微孔的多孔沥青球熔融，然后激活多孔沥青球体在氨气气氛中的温度为550〜1000℃。由此制得的活性炭球特别适用于含亚硫酸气体燃烧废气脱硫和废液处理的活性炭来自亚硫酸盐纸浆工艺。

2. 发明专利

CA1162380A HYDROXYAPATITE, CERAMIC MATERIAL AND PROCESS FOR PREPARING THEREOF 未知
公开(公告)号：CA1162380A
公开(公告)日：1984-02-21
申请号：CA422747
申请日：1983-03-02
申请人： KUREHA CHEMICAL IND CO LTD
发明人： NAGAI HIROSI , NISHIMURA YASUSHI
IPC分类号： C01B25/32 , A61F1/00
摘要： An aqueous emulsion of minute particles of calcium hydroxide formed by bringing porous and minute particles of practically pure calcium oxide into reaction with an excess amount of water is brought into reaction with an aqueous solution of phosphoric acid in an inert atmosphere, a milky reaction mixture containing the reaction product, hydroxyapatite is obtained. After filtering, the separated cake is washed with water and dried to be an aggregate of hydroxyapatite having the following properties: Analytical value of an atomic ratio of Ca/P: 1.67 to 1.69, Mean size of dimention of hydroxyapatite of length: 150 to 1200 .ANG. width: 50 to 400 .ANG., and ratio of length/width: 3 to 10. Void: 0.2 to 0.8 cm3/g Mean pore-radius: 50 to 150 .ANG.. By firing the filtered cake, a ceramic material of hydroxyapatite having the following physical properties is obtained: Analytical value of Ca/P : 1.67 to 1.69, Mean crystal size : 4 to 20 microns, and Density : 3.14 to 3.16 g/cm3. The mean crystal size of the thus obtained material is larger than that of conventional synthetic ceramic material of hydroxyapatite. The ceramic material of the present invention is prepared from the purer raw materials than those used for preparing the conventional materials. In addition, even after firing of the aggregate of hydroxyapatite at a temperature of 1350.degree.C for one hour, no formation of whitlockite occurs, and no structural defects or decomposition occurs and the aggregate is excellent in thermal stability. This invention relates to hydroxyapatite, ceramic material, implant material and a process for preparing thereof. The ceramic material is hydroxyapatite ceramic having an excellent thermal stability.

3. 发明专利

DE2940906A1 未知
公开(公告)号：DE2940906A1
公开(公告)日：1980-04-10
申请号：DE2940906
申请日：1979-10-09
申请人： KUREHA CHEMICAL IND CO LTD
发明人： OKUDA KENSUKE , NAGAI HIROSI , FUJIMAKI HIROTO , TOMONAGA ATSUSHI , AOKI HIDEKI
IPC分类号： A61C8/00 , A61C20060101 , A61C13/08 , A61F2/28 , A61K6/00 , A61K6/838 , A61K6/884 , C08K3/32
摘要： An artificial dental root comprised of a particulate or powdered form of synthetic hydroxyapatite or calcined or sintered synthetic hydroxyapatite or a mixture thereof and an organic matrix, the surface area of said artificial dental root to be brought into contact with a bone being composed of both a phase of said hydroxyapatite and a phase of said organic matrix. The artificial dental root is prepared by blending said hydroxyapatite with said organic matrix and molding the blend. The artificial dental root has moderate affinity for a bone and high mechanical strength.

4. 发明专利

CA1263124A IMPLANT MATERIAL WITH CONTINUOUS AND TWO-DIMENSIONAL PORES AND PROCESS FOR PRODUCING THE SAME 未知
公开(公告)号：CA1263124A
公开(公告)日：1989-11-21
申请号：CA539630
申请日：1987-06-15
申请人： KUREHA CHEMICAL IND CO LTD
发明人： NAGAI HIROSI
IPC分类号： A61L27/00 , A61F2/00 , A61F2/30 , A61K6/838 , A61L27/12 , A61L27/56 , C04B38/06
摘要： Disclosed herein are a highly strong implant material having continuous passages in the two-dimensional direction, which is a ceramic material of hydroxyapatite and is useful as the substitutive material for bones in the fields of surgery and orthopedics or the filling material in the cavities of bones in the fields of dentistry and oral surgery, and a process for producing the implant material.

5. 发明专利

CA1158078A ARTIFICIAL DENTAL ROOT 未知
公开(公告)号：CA1158078A
公开(公告)日：1983-12-06
申请号：CA336458
申请日：1979-09-25
申请人： KUREHA CHEMICAL IND CO LTD
发明人： OKUDA KENSUKE , NAGAI HIROSI , FUJIMAKI HIROTO , TOMONAGA ATSUSHI , AOKI HIDEKI
IPC分类号： C09K19/60 , A61C13/00 , C09K19/32 , C09K19/46 , G02F1/13 , G02F1/137 , G09F9/00 , G09F9/35
摘要： ARTIFICIAL DENTAL ROOT An artificial dental root comprised of a particulate or powdered form of synthetic hydroxyapatite or calcined or sintered synthetic hydroxyapatite or a mixture thereof and an organic matrix, the surface area of said artificial dental root to be brought into contact with a bone being composed of both a phase of said hydroxyapatite and a phase of said organic matrix. The artificial dental root is prepared by blending said hydroxyapatite with said organic matrix and molding the blend. The artificial dental root has moderate affinity for a bone and high mechanical strength.

6. 发明专利

DE3680392D1 未知
公开(公告)号：DE3680392D1
公开(公告)日：1991-08-29
申请号：DE3680392
申请日：1986-06-09
申请人： KUREHA CHEMICAL IND CO LTD
发明人： NAGAI HIROSI
IPC分类号： A61C8/00 , A61K6/04 , A61K6/083 , A61L27/34 , A61L27/46 , A61L27/00 , A61F2/28 , A61B17/58
摘要： An implant material (1) suitable for use in a living body comprises a metallic core material (3) covered by a layer (2) comprising a biocompatible, stable thermoset resin and, optionally, hydroxyapatite.

7. 发明专利

CA1158017A HYDROXYAPATITE, CERAMIC MATERIAL AND PROCESS FOR PREPARING THEREOF 未知
公开(公告)号：CA1158017A
公开(公告)日：1983-12-06
申请号：CA360804
申请日：1980-09-23
申请人： KUREHA CHEMICAL IND CO LTD
发明人： NAGAI HIROSI , NISHIMURA YASUSHI
IPC分类号： C04B38/00 , A61F2/00 , A61K6/02 , A61K6/838 , A61L27/00 , A61L27/12 , A61L27/46 , C01B25/32 , C04B35/00 , C04B35/447 , D01F9/08
摘要： An aqueous emulsion of minute particles of calcium hydroxide formed by bringing porous and minute particles of practically pure calcium oxide into reaction with an excess amount of water is brought into reaction with an aqueous solution of phosphoric acid in an inert atmosphere, a milky reaction mixture containing the reaction product, hydroxyapatite is obtained. After filtering, the separated cake is washed with water and dried to be an aggregate of hydroxyapatite having the following properties: Analytical value of an atomic ratio of Ca/P: 1.67 to 1.69, Mean size of dimention of hydroxyapatite of length: 150 to 1200 .ANG. width: 50 to 400 A, and ratio of length/width: 3 to 10. Void: 0.2 to 0.8 cm3/g Mean pore-radius: 50 to 150 .ANG.. By firing the filtered cake, a ceramic material of hydroxyapatite having the following physical properties is obtained: Analytical value of Ca/P : 1.67 to 1.69, Mean crystal size : 4 to 20 microns, and Density : 3.14 to 3.16 g/cm3. The mean crystal size of the thus obtained material is larger than that of conventional synthetic ceramic material of hydroxyapatite. The ceramic material of the present invention is prepared from the purer raw materials than those used for preparing the conventional materials. In addition, even after firing of the aggregate of hydroxyapatite at a temperature of 1350.degree.C for one hour, no formation of whitlockite occurs, and no structural defects or decomposition occurs and the aggregate is excellent in thermal stability. This invention relates to hydroxyapatite, ceramic material, implant material and a process for preparing thereof. The ceramic material is hydroxyapatite ceramic having an excellent thermal stability.

8. 发明专利

DE3064832D1 PROCESS FOR PREPARING HYDROXYAPATITE, AND FILTER CAKE, CERAMIC MATERIAL AND IMPLANT MATERIAL COMPRISING HYDROXYAPATITE 未知
公开(公告)号：DE3064832D1
公开(公告)日：1983-10-20
申请号：DE3064832
申请日：1980-09-18
申请人： KUREHA CHEMICAL IND CO LTD
发明人： NAGAI HIROSI , NISHIMURA YASUSHI NO HAITSU-TA
IPC分类号： C04B38/00 , A61F2/00 , A61K6/02 , A61K6/838 , A61L27/00 , A61L27/12 , A61L27/46 , C01B25/32 , C04B35/00 , C04B35/447 , D01F9/08 , A61F1/00

9. 发明专利

IT1125451B 未知
公开(公告)号：IT1125451B
公开(公告)日：1986-05-14
申请号：IT2632679
申请日：1979-10-08
申请人： KUREHA CHEMICAL IND CO LTD
发明人： OKUDA KENSUKE , NAGAI HIROSI , FUJIMAKI HIROTO , TOMONAGA ATSUSHI , AOIKI HIDEKI
IPC分类号： A61C8/00 , A61C20060101 , A61C13/08 , A61F2/28 , A61K6/00 , A61K6/838 , A61K6/884 , C08K3/32 , A61C
摘要： An artificial dental root comprised of a particulate or powdered form of synthetic hydroxyapatite or calcined or sintered synthetic hydroxyapatite or a mixture thereof and an organic matrix, the surface area of said artificial dental root to be brought into contact with a bone being composed of both a phase of said hydroxyapatite and a phase of said organic matrix. The artificial dental root is prepared by blending said hydroxyapatite with said organic matrix and molding the blend. The artificial dental root has moderate affinity for a bone and high mechanical strength.

10. 发明专利

CA1012955A METHOD FOR THE PRODUCTION OF ACTIVATED CARBON SPHERES 未知
公开(公告)号：CA1012955A
公开(公告)日：1977-06-28
申请号：CA198481
申请日：1974-04-30
申请人： KUREHA CHEMICAL IND CO LTD , TOYO BOSEKI
发明人： NAGAI HIROSI , KATORI KUNIHIKO , SHIIKI ZENYA , AMAGI YASUO
IPC分类号： C01B32/336 , B01D53/02 , B01J20/20 , B01J21/18 , B01J35/08 , B01J37/00 , C01B32/384
摘要： Spheres of activated carbon are obtained by melting and mixing 100 parts by weight of pitch with 10 to 50 parts by weight of an aromatic solvent compatible with said pitch and 0.01 to 1 part by weight of a metal compound, molding the resultant molten mixture to form a plurality of spheres, immersing the formed spheres in an organic solvent which is compatible with said aromatic solvent and destitute of affinity for said pitch to extract said aromatic solvent from said spheres, infusibilizing the resultant porous pitch spheres having micro-pores and thereafter activating the porous pitch spheres in an atmosphere of ammonia gas at the temperature of 550 to 1000 DEG C. The activated carbon spheres thus produced are particularly useful as activated carbon for the desulfurization of a sulfurous acid gas-containing combustion exhaust gas and for treatment of waste liquor from a sulfite pulp process.

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