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1. 发明专利

JP2001270961A METHOD FOR RECOVERING USEFUL MATERIAL FROM WASTE PLASTICS MAINLY COMPOSED OF POLYCARBONATE RESIN 失效
公开(公告)号：JP2001270961A
公开(公告)日：2001-10-02
申请号：JP2000088388
申请日：2000-03-28
申请人： VICTOR COMPANY OF JAPAN
发明人： TSUJITA KOJI , KAWAI NOBORU , TAKAHASHI TERUO
IPC分类号： C08J11/16 , C08J11/20 , C08J11/22 , C08J11/24 , C08J11/26
摘要： PROBLEM TO BE SOLVED: To recover a useful chemical raw material from waste plastics mainly composed of a polycarbonate resin. SOLUTION: In this method, toluene (or xylene) is used as an aromatic organic solvent for resolving a polycarbonate resin. The polycarbonate resin in waste plastics is chemically decomposed using an aqueous ammonia solution in the solution where both toluene (or xylene) and aqueous ammonia exist, and bis-phenol A and urea are recovered in a short time as useful chemical raw materials.

2. 发明专利

JP2001302573A METHOD FOR RECOVERING USEFUL SUBSTANCE FROM WASTE PLASTIC CONTAINING SUBSTANTIALLY POLYCARBONATE RESIN 失效
公开(公告)号：JP2001302573A
公开(公告)日：2001-10-31
申请号：JP2000127575
申请日：2000-04-27
申请人： VICTOR COMPANY OF JAPAN
发明人： TSUJITA KOJI , KAWAI NOBORU , TAKAHASHI TERUO
IPC分类号： C08J11/28 , C07C37/055 , C07C39/16 , C07C273/18 , C07C275/06
摘要： PROBLEM TO BE SOLVED: To provide a method for recovering useful substances from waste plastics containing substantially polycarbonate resin, in which the useful substances can be recovered from a large amount of the waste plastics by rapid decomposition of the waste plastics. SOLUTION: This method for recovering the useful substances from the waste plastics containing the polycarbonate resin as a main component, characterized by chemically decomposing the polycarbonate resin in the waster plastics in a solution comprising an organic solvent for decomposing the polycarbonate resin and a primary amine and then recovering bisphenol A and a urea derivative as useful chemical raw materials from the decomposition product. The polycarbonate resin and the primary amine can be recovered in a short time.

3. 发明专利

JP2000319665A WASTE PLASTIC LIQUEFACTION PROCESS AND EQUIPMENT 失效
公开(公告)号：JP2000319665A
公开(公告)日：2000-11-21
申请号：JP12895099
申请日：1999-05-10
申请人： VICTOR COMPANY OF JAPAN
发明人： TAKAHASHI TERUO
IPC分类号： B09B3/00 , C10G1/10
摘要： PROBLEM TO BE SOLVED: To provide a process for preventing clogging of equipment and devices due to crystals of phthalic acids and the like to simply recover a decomposed oil and the crystals with good efficiency in the process for pyrolytically decomposing composite waste plastics containing a large amount of PET materials to recover the decomposed oil and phthalic acids, and its equipment. SOLUTION: In the process for cooling a decomposed gas obtained in a pyrolysis vessel 2 by a condenser 7 to separate and recover a decomposed oil and crystals, the deposition of the crystals on the inner wall of the condenser 7 is prevented by jetting the decomposed oil onto the inner wall of the condenser 7 from nozzles 11 of a conduit 10. Further, by means of an ultrasonic vibration means 17 provided on the bottom surface of the condenser 7, the crystals deposited on the inner wall of the condenser 7 are cleaned and removed by giving ultrasonic vibration to the decomposed oil filled in the condenser 7.

4. 发明专利

JP2000176936A METHOD FOR CONVERTING WASTE PLASTIC NATERIAL INTO OIL 失效
公开(公告)号：JP2000176936A
公开(公告)日：2000-06-27
申请号：JP35811198
申请日：1998-12-16
申请人： VICTOR COMPANY OF JAPAN
发明人： TAKAHASHI TERUO
IPC分类号： B09B3/00 , B29B17/00 , B29K67/00 , C08J11/10 , C10G1/10
摘要： PROBLEM TO BE SOLVED: To make oil from a laminated composite mainly containing a polycarbonate and its optical disk housing case by a method in which a waste plastic material in which at least one of organic, inorganic, and metallic substances is laminated on the polycarbonate is gasified by melt pyrolysis, cooled, condensed, and liquefied. SOLUTION: A reactor 1 of a stainless steel container is divided into upper and lower parts by a metal catalyst layer 5, the upper part is connected with a cooler 9, and a heater 2, an agitator 7 for agitating a liquid phase, and others are arranged in the reactor 1. Plastic 3 cut into prescribed pieces is packed in the reactor 1, with white kerosene in a prescribed weight ratio to the plastic 3 added as a solvent 4 to prevent local heating, and heat-melted by the heater 2 with agitating by the agitator 7, and a generated gas is passed through the catalyst layer 5, condensed by the cooler 9, and collected in an extraction oil container 10. In this way, a product of a laminated composite mainly containing a polycarbonate such as an optical disk and a tray material mainly containing polystyrene can be converted into oil in a good yield.

5. 发明专利

JP2000048341A MAGNETIC TAPE AND ITS PRODUCTION 失效
公开(公告)号：JP2000048341A
公开(公告)日：2000-02-18
申请号：JP23001098
申请日：1998-07-31
申请人： VICTOR COMPANY OF JAPAN
发明人： TAKAHASHI TERUO
IPC分类号： G11B5/627 , G11B5/64 , G11B5/65 , G11B5/78 , G11B5/85
摘要： PROBLEM TO BE SOLVED: To produce a magnetic tape having a detection part for the lead and tail ends and a polishing part for head cleaning in an easy production process with high productivity. SOLUTION: This magnetic tape 1 has a magnetic recording layer 3 on a base film 2 and has a detection part for the lead and trail ends and a polishing part 5 for head cleaning which are continuously formed on both ends on the same base film. The producing method includes a process to dispose first and second crucibles 16, 18 in a vacuum chamber 11, to continuously form the magnetic recording layer and the detection part for the lead and trail ends by vaporizing a vapor deposition material 15 from the first crucible while introducing and stopping oxygen gas, and to form the polishing part for head cleaning by vaporizing a vapor deposition material 17 from the second crucible while introducing oxygen gas.

6. 发明专利

JPH10100250A ELECTROFORMED MOLD FOR OPTICAL INFORMATION RECORDING MEDIUM AND ITS MANUFACTURE 失效
公开(公告)号：JPH10100250A
公开(公告)日：1998-04-21
申请号：JP28024796
申请日：1996-10-01
申请人： VICTOR COMPANY OF JAPAN
发明人： TAKAHASHI TERUO
IPC分类号： B29C33/38 , B29C59/02 , C25D1/00 , C25D1/10 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To make an oxide layer function as a peeling film as it is because it is high in mechanical strength and long in life as a stamper by a method wherein in an electroformed mold having a metal oxide layer on a surface, the degree of oxidation of the metal oxide layer is made large in an upper layer part, and small in a lower layer part. SOLUTION: A resist recording layer 12 having a specific pattern is formed on a glass original board 11 by a photolithographic method. A metal oxide layer 13 consisting of Ni is formed on the resist recording layer 12 of the glass original board 11 by a reactive vacuum film forming method. As the reactive vacuum film forming method, there is a DC sputtering method or the like. Ni targets becoming an anode and a cathode are arranged by being opposed to each other in a vacuum tank having two gas introduction openings, and a glass original board 11 with the resist recording layer is placed to the anode. Ni ion is emitted from the Ni target by glow discharge between both electrodes to form a film on the glass original board 11.

7. 发明专利

JPH08147673A MAGNETIC RECORDING MEDIUM AND ITS MANUFACTURE 失效
公开(公告)号：JPH08147673A
公开(公告)日：1996-06-07
申请号：JP30691794
申请日：1994-11-16
申请人： VICTOR COMPANY OF JAPAN
发明人： TAKAHASHI TERUO
IPC分类号： G11B5/84 , C09D5/23 , C09D7/12 , G11B5/73 , G11B5/738 , G11B5/704
摘要： PURPOSE: To improve the smoothness of the surface of a magnetic recording layer and thin a medium itself by layering a non-magnetic layer having holes not sealed on the surface of a non-magnetic base body, and the magnetic recording layer having inorganic particles including magnetic powders mixed therein. CONSTITUTION: A non-magnetic layer 2 and a magnetic recording layer 3 are layered on a non-magnetic base body 1 thereby to form a magnetic recording medium 4. Many irregularities, namely, holes 5 not sealed are formed on the surface of the layer 2 by a porous treatment. Magnetic powders or inorganic fine particles 6 such as abrasive particles, etc., included in the layer 3 are pressed into the holes 5, so that the surface of the layer 3 becomes smooth. Aluminum or the like is utilizable for tone layer 2. In the porous treatment, the surface is subjected to anodic oxidation treatment, thereby to form arm anodic oxidation aluminum layer, with many holes 5 formed. Further, the layer 3 after formed is pressed from above by calendering or the like so as to feed the inorganic particles into many holes 5.

8. 发明专利

JP2000178564A PROCESS OF WASTE PLASTIC MATERIAL LIQUEFACTION 失效
公开(公告)号：JP2000178564A
公开(公告)日：2000-06-27
申请号：JP35811098
申请日：1998-12-16
申请人： VICTOR COMPANY OF JAPAN
发明人： TAKAHASHI TERUO
IPC分类号： B09B3/00 , C08J11/10 , C10G1/10
摘要： PROBLEM TO BE SOLVED: To efficiently liquefy and decompose products consisting of various plastics including PET and composite material components thereof, such as magnetic tape cassettes. SOLUTION: Tape media, cassettes and spools consisting of plastic films which are components of waste plastic materials, are cut into small fragments to prepare plastic specimens 3, which are pyrolytically decomposed and gasified in a reaction tank 1, subsequently condensed to be liquefied by a cooling apparatus 9 and recovered in an extraction oil vessel 10. Here, the cassettes and spools mainly comprise general-purpose polystyrene or ABS, and the base plates of tape media mainly comprises polyethylene terephthalate.

9. 发明专利

JP2001160243A METHOD FOR TREATING WASTE OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2001160243A
公开(公告)日：2001-06-12
申请号：JP34353899
申请日：1999-12-02
申请人： VICTOR COMPANY OF JAPAN
发明人： TSUJITA KOJI , KAWAI NOBORU , TAKAHASHI TERUO
IPC分类号： G11B7/26 , C08J11/16 , C08J11/20 , C08J11/24
摘要： PROBLEM TO BE SOLVED: To provide a method for continuously treating waste optical recording media, wherein the waste optical recording media consisting essentially of a polycarbonate resin and having a reflection layer and the like are chemically decomposed and the resultant bisphenolic compound is efficiently recovered without inclusion of foreign matter. SOLUTION: The waste is chemically decomposed in the presence of a solvent, an alcohol and a catalyst in a decomposition vessel 1. After the reflection layer and the light of the decomposition residue are separated and removed in a segregation vessel 3, the bisphenolic compound is recovered in a separation vessel 7 and the residual solution is fed to a distillation tower 11 to fractionate and recover the solvent and alcohol which are circulated to the decomposition vessel 1 for reuse.

10. 发明专利

JP2001093196A METHOD FOR RECOVERING SUBSTRATE 失效
公开(公告)号：JP2001093196A
公开(公告)日：2001-04-06
申请号：JP27028299
申请日：1999-09-24
申请人： VICTOR COMPANY OF JAPAN
发明人： TSUJITA KOJI , KAWAI NOBORU , TAKAHASHI TERUO
IPC分类号： B09B5/00 , B29B17/00 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To provide a substrate recovering method for recovering a high purity substrate as it is from an optical recording medium without mixing any contaminants such as a protection layer and a label layer (pigments) to reuse it as a resource. SOLUTION: When the substrate 11 is recovered from the optical recording medium (CD) consisting of the substrate 11 made of a thermoplastic resin and a reflection layer 13, the protection layer 14 and the label layer 15 which are laminated on the substrate 11, at least two following steps are carried out. The first step is to form exposed parts (grooves) 18 by exposing a part of the lowermost reflection layer 13 physically and the second step is to remove the layer 13 through the parts 18 chemically and remove the layers 14 and 15 on the layer 13 by making good use of the absence of the layer 13. The plural exposed parts 18 are arranged on the whole surface of the optical recording medium at almost regular pitches i.e., plural grooves are arranged at the positions like the intersection points of a go board so that a distance between the intersection points is made to be 5 mm.

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