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41. 发明专利

JPH07145310A THERMOPLASTIC RESIN COMPOSITION 失效
公开(公告)号：JPH07145310A
公开(公告)日：1995-06-06
申请号：JP27436993
申请日：1993-11-02
申请人： MITSUBISHI CHEM CORP
发明人： OMURA HARUO , TANAKA TOMOHIKO
IPC分类号： C08K5/49 , C08L71/12 , C08L81/02
摘要： PURPOSE:To obtain the subject composition giving a molding excellent in appearance, heat resistance, and impact strength by mixing a specific poly(phenylene sulfide) resin with a poly(phenylene ether) resin and a phosphite compound in a given proportion. CONSTITUTION:100 pts.wt. of a resin is mixed with 0.1-10 pts.wt. phosphite or phosphonite compound [e.g. bis(2,6-di-t-butyl-4-methylphenyl)pentaerythritol diphosphitel, the resin comprising 90-10wt.% poly(phenylene ether) resin and 10-90wt.% hydroxyalkylated poly(phenylene sulfide) resin obtained by reacting poly(phenylene sulfide) with a compound having at least one hydroxyalkyl group and at least one SH or disulfide group in the molecule (e.g. thioglycerol).

42. 发明专利

JPH0726142A THERMOPLASTIC RESIN COMPOSITION 失效
公开(公告)号：JPH0726142A
公开(公告)日：1995-01-27
申请号：JP16917093
申请日：1993-07-08
申请人： MITSUBISHI CHEM CORP
发明人： OMURA HARUO , TANAKA TOMOHIKO
IPC分类号： C08L71/12 , C08L81/02
摘要： PURPOSE:To obtain a thermoplastic resin composition useful for connector, gear, etc., having excellent mechanical strength, appearance, etc., comprising a carboxylic acid ester group-containing polyphenylene sulfide resin, a hydroxyalkyl group-containing polyphenylene ether resin and a catalyst. CONSTITUTION:100 pts.wt. of a resin component composed of (A) 10-90wt.% of a polyphenylene sulfide resin modified with a sulfone succinic acid diester of the formula (R1 is 1-20C alkyl or aralkyl; R2 is alkali metal atom or H) and (B) 90-10wt.% of a hydroxyalkyl group-containing polyphenylene ether resin is mixed with (C) 0.05-10 pts.wt. of a catalyst (e.g. sodium carbonate or cesium carbonate) for promoting transesterification to give the objective composition. This composition is preferably mixed with (D) 3-40 pts.wt. of an improver for impact resistance comprising a thermoplastic elastomer.

43. 发明专利

JP2006348148A RESIN COMPOSITION FOR HEAT-SHRINKABLE FILM, HEAT-SHRINKABLE FILM, HEAT-SHRINKABLE LABEL AND LABEL-ATTACHING VESSEL 审中-公开
公开(公告)号：JP2006348148A
公开(公告)日：2006-12-28
申请号：JP2005175227
申请日：2005-06-15
申请人： MITSUBISHI CHEM CORP
发明人： TOMITA YASUHIRO , SHIGEMATSU YASUNARI , YOSHITOKU HIROO , TANAKA TOMOHIKO
IPC分类号： C08L67/02 , B29C55/02 , B29K67/00 , B29K105/02 , B29L7/00 , B65D23/08 , B65D25/36 , C08J5/18 , C08K5/521 , C08L69/00
摘要： PROBLEM TO BE SOLVED: To provide an alicyclic polyester-based resin composition for a heat-shrinkable film superior in transparency, a color tone and a degree of heat shrinkage. SOLUTION: This resin composition for the heat-shrinkable film comprises an alicyclic polyester resin (component A) and an aromatic polycarbonate resin (component B), wherein a mass percent ratio of the component A to the component B is 95/5-75/25. In a preferred embodiment, a poly(1,4-cyclohexanedimethanol-1,4-cyclohexanedicarboxylate) is used as the alicyclic polyester resin (component A), and the resin composition contains 0.01-5 parts by mass of a transesterification inhibitor (component C) based on the total of 100 parts by mass of the component A and the component B. COPYRIGHT: (C)2007,JPO&INPIT

44. 发明专利

JP2001118223A TRAY FOR CONVEYING MAGNETIC HEAD FOR MAGNETIC DISK 失效
公开(公告)号：JP2001118223A
公开(公告)日：2001-04-27
申请号：JP2000067485
申请日：2000-03-10
申请人： ALPS ELECTRIC CO LTD , MITSUBISHI CHEM CORP , YUKA DENSHI KK
发明人： TANAKA SHIGERU , ASANO ETSUJI , TANAKA TOMOHIKO , SAGISAKA KOICHI
IPC分类号： G01R33/09 , C08J5/00 , G11B5/39 , G11B5/40
摘要： PROBLEM TO BE SOLVED: To provide a tray for conveying a magnetic head for magnetic disk, having little in danger of damaging the magnetic head due to a contact current or friction. SOLUTION: This tray for conveying a magnetic head for a magnetic disk is formed by injection-molding a conductive polycarbonate resin composition and has 1×103-1×1012 Ω surface resistivity. As to the surface roughness of the tray, it is =1% load length ratio (tp) at 10% cutting level and has a peak count(Pc) of >=±0.1 μm peak length from the center line of

45. 发明专利

JP2001049130A THERMOPLASTIC RESIN COMPOSITION FOR HANDLING ELECTRONIC PART AND MOLDED ARTICLE FOR HANDLING ELECTRONIC PART 失效
公开(公告)号：JP2001049130A
公开(公告)日：2001-02-20
申请号：JP22419599
申请日：1999-08-06
申请人： ALPS ELECTRIC CO LTD , YUKA DENSHI KK , MITSUBISHI CHEM CORP
发明人： TANAKA SHIGERU , ASANO ETSUJI , TANAKA TOMOHIKO , SAGISAKA KOICHI
IPC分类号： G11B5/39 , B29C70/68 , B65D85/86 , C08K7/06 , C08L101/00 , C08L101/16 , G11B5/127
摘要： PROBLEM TO BE SOLVED: To provide a thermoplastic resin molded article for handling electronic parts, such as a carrier for magnetic heads (made of magneto-resistive elements), scarcely giving the parts electronic damage caused by electrostatic discharge, excessive conduction of a contact current, etc. SOLUTION: This thermoplastic resin composition used for molding an article for handling electronic parts comprises compounding 100 pts.wt. of a thermoplastic resin, such as polycarbonate resin, with 5-100 pts.wt. of carbon fiber and further with 1-100 pts.wt. of a polymeric antistatic agent, wherein the resin composition has an electrical surface resistance of 103 to 1012 Ω. The molded article for handling electronic parts is obtained by molding the thermoplastic resin composition used for molding the article for handling electronic parts.

46. 发明专利

JP2000211015A APPARATUS FOR PRODUCING PROFILE PIPE MADE OF RESIN 失效
公开(公告)号：JP2000211015A
公开(公告)日：2000-08-02
申请号：JP1322399
申请日：1999-01-21
申请人： MITSUBISHI CHEM CORP
发明人： NAKAMARU MASAFUMI , TANAKA TOMOHIKO , URASHU IBRAHIM
IPC分类号： B29C48/32 , B29C48/90 , B29L23/00 , B29C47/90 , B29C47/20
摘要： PROBLEM TO BE SOLVED: To form a nose part in a precursor molding process based on extrusion molding by providing an outside diameter calibration sizer whose inside diameter differs in large and small sizes at the front of an extruder for extruding tubularly a thermoplastic synthetic resin to control the outer surface of the extruded tubular body while it is sucked under vacuum condition. SOLUTION: A molten tubular body 3 extruded from a die 1 is at first successively passed through the insides of outside diameter calibration sizers 5 and 7 for a small diameter part and a large diameter part of vacuum rooms 4 and 6 filled with water and is held by a take-off machine 8. Then, the vacuum room 6 on downstream side is made vacuum and the molten tubular body 3 is brought into contact with the sizer 7 and it is cooled and solidified to form a large diameter part 9A. Successively, when the large diameter part 9A with a specified length is obtd., the vacuum room 4 on upstream side is made vacuum to form a small diameter part 9B. In addition, being timed to formation of the small diameter part 9B, pressure reduction in the vacuum room 6 is stopped to complete formation of the large diameter part 9A. Thereafter, under this condition as it is, molding of the small diameter part 9B is continued until the small diameter part 9B reaches a specified length.

47. 发明专利

JP2000167923A APPARATUS FOR MANUFACTURING TUBULAR BODY OF RESIN 失效
公开(公告)号：JP2000167923A
公开(公告)日：2000-06-20
申请号：JP34191098
申请日：1998-12-01
申请人： MITSUBISHI CHEM CORP
发明人： NAKAMARU MASAFUMI , TANAKA TOMOHIKO , URASHU IBRAHIM
IPC分类号： B29C55/22 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To provide an apparatus which can manufacture a tubular body of resin efficiently without greatly enlarging the installation space for the apparatus. SOLUTION: A cylindrical material 1 is heated by an oven and pulled out through between the inner periphery of a forming hole of a die and the outer periphery of a former by the pulling force applied by guide rollers 11 and a clamp and introduced into a cooling water tank 8 so as to be formed into a tubular body 7. A plurality of pairs of guide rollers 11 are disposed in the tank 8 to grip the body 7 from left and right sides. The supporting axis of each guide roller 11 is supported by a water seal type thrust and radial bearing on the bottom of the tank 8. The lower end of the axis is connected to a drive device with a motor disposed under the tank 8 to rotate the tubular body 7 in a feed direction (pulling direction).

48. 发明专利

JPH10225987A MANUFACTURE OF RESIN TUBULAR BODY 失效
公开(公告)号：JPH10225987A
公开(公告)日：1998-08-25
申请号：JP2901997
申请日：1997-02-13
申请人： MITSUBISHI CHEM CORP
发明人： NAKAMARU MASAFUMI , URASHU IBRAHIM , TANAKA TOMOHIKO
IPC分类号： B29C55/26 , B29C55/30 , B29K101/12 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To stabilize physical properties and size by forming a former so that a half apex angle of a conically enlarged part of a downstream part is smaller than that of an upstream part, giving a small strain to a hollow product to cause necking at the product, and elongating it so that its thickness is set to a specific amount or less of its initial thickness. SOLUTION: A former 3 in which a half apex angle of a conically enlarged part of a downstream part is smaller than that of an upstream part is used. In this case, even in the former 3 having a stepwisely reduced half apex angle, the half apex angle may be satisfactory if it is continuously reduced. A hollow product 1 is given by a strain preferably larger by twice or more than a yield strain amount at a processing temperature of crystalline thermoplastic resin for constituting the product 1 in a tensile and circumferential directions to cause necking at the product 1. The product 1 is then elongated and a thickness of a resultant resin tubular body 7 is reduced by 25% or more of an initial thickness of the product 1. To this end, a suitable combination of the temperature, orienting velocity and a gap between a die 2 and the former 3 is necessarily decided by a preliminary experiment.

49. 发明专利

JPH10225983A MANUFACTURE OF RESIN TUBULAR FORM 失效
公开(公告)号：JPH10225983A
公开(公告)日：1998-08-25
申请号：JP2901597
申请日：1997-02-13
申请人： MITSUBISHI CHEM CORP
发明人： NAKAMARU MASAFUMI , URASHU IBRAHIM , TANAKA TOMOHIKO
IPC分类号： B29C55/26 , B29C55/30 , B29D23/00 , B29K101/12 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To manufacture a resin tubular form which has a good appearance and shows a significantly high elastic modulus in tension in a peripheral direction and a melt point lower by scores of degrees C than the melt point of thermoplastic resin and an extremely low decrease in the modulus of elasticity when the tubular form is maintained under temperature conditions above a glass transition temperature for a long time. SOLUTION: This method for manufacturing a resin tubular form is to perform the orientation molding of a hollow work 1 of crystalline thermoplastic resin by pulling it from a clearance between a die 2 and a former 3 with the help of a clamp 5. In this case, the hollow work 1 is orientated under necking effects to be caused over a stretch up to a position in which the hollow work 1 is equivalent to a transverse area equal to 90% of the maximum transverse area of the former 3, using the former 3 whose maximum transverse area is 9 times or more larger than the initial transverse area of the hollow part of the hollow work 1, by giving a strain which is larger than the yield strain level of the crystalline thermoplastic resin at its working temperature and is smaller than the fracture strain level of the resin at its working temperature to the hollow work 1 in its tensile direction and also its peripheral direction. Thus the thickness is reduced 25% or loss compared to the initial thickness.

50. 发明专利

JPH10225982A MANUFACTURE OF RESIN TUBULAR FORM 失效
公开(公告)号：JPH10225982A
公开(公告)日：1998-08-25
申请号：JP2901497
申请日：1997-02-13
申请人： MITSUBISHI CHEM CORP
发明人： NAKAMARU MASAFUMI , URASHU IBRAHIM , TANAKA TOMOHIKO
IPC分类号： B29C55/26 , B29C55/30 , B29D23/00 , B29K101/12 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To manufacture a resin tubular form which shows a high elastic modulus in tension and a lower melt point than that of thermoplastic resin and further, an extremely small decrease in the modulus of elasticity when the form is maintained under temperature conditions above a glass transition temperature for a long time. SOLUTION: The method for manufacturing a resin tubular form is to perform the orientation molding of a hollow work 1 of crystalline thermoplastic resin by pulling it from a clearance between a die 2 and a former 3 with the help of a clamp 5. In this case, the hollow work 1 is oriented under necking effects to be caused by giving a strain which is larger than the yield strain level of the crystalline thermoplastic resin at its working temperature and smaller than the fracture strain level of the resin at its working temperature to the hollow work 1 in its tensile direction and also its peripheral direction. Thus the thickness is reduced 25% or less compared to the initial thickness.

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