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61. 发明专利

JPH1045889A MANUFACTURE OF BIODEGRADABLE POLYESTER 失效
公开(公告)号：JPH1045889A
公开(公告)日：1998-02-17
申请号：JP22438996
申请日：1996-08-06
申请人： SHIMADZU CORP , KOBE STEEL LTD
发明人： OBARA HITOMI , SAWA SEIJI , FUJII YASUHIRO , ITO MASAHIRO , MAEDA HIROSHI , SHIMIZU KUNIHIKO , MIYAGAWA YUTAKA , YAMAMOTO KOJI
IPC分类号： C08K5/04 , C08G63/08 , C08G63/78 , C08G63/88 , C08K5/05 , C08K5/09 , C08K5/10 , C08L67/00 , C08L67/04 , C08L101/16
摘要： PROBLEM TO BE SOLVED: To provide a method for stability producing a modified biodegradable polyester in high efficiency. SOLUTION: In the polymerization of an aliphatic polyester, at the late stage of the polymerization reaction or after the polymerization reaction, a modifier is added to the reaction system while keeping molten state. In the case of polymerization of lactic acid, either a ring opening polymerization of a lactide or a direct condensation through dehydration of lactic acid is preferred. The modifier is added after more than 70% of the polymerization raw material is reacted. Aliphatic polyester, alcohols, carboxylic acids, lactic esters, acid and water are preferred as the modifier. This method is capable of effectively producing two or more kinds of biodegradable polyester suppressing the degradation of the modifier at the minimum level.

62. 发明专利

JPH06136090A FLEXIBLE EPOXY RESIN COMPOSITION 失效
公开(公告)号：JPH06136090A
公开(公告)日：1994-05-17
申请号：JP28314992
申请日：1992-10-21
申请人： KOBE STEEL LTD
发明人： YAMAMOTO KOJI , FUJISAWA KAZUHISA
IPC分类号： C08G59/18 , C08G59/42
摘要： PURPOSE:To provide a flexible epoxy resin composition giving cured products excellent in their electric insulating properties and having a good balance between heat resistance and flexibility by compounding an epoxy resin with a flexible curing agent so as to satisfy specific conditions. CONSTITUTION:The composition contains (A) an epoxy resin (preferably a bisphenol A type epoxy resin, a bisphenol F type epoxy resin, etc.,) and (B) a flexible curing agent (e.g. a dicarboxylic acid dehydrative polycondensation product such as polyadipic acid polyanhydride) as essential components and satisfies the heat resistance parameter P of the inequality (PE is the whole bond enthalpy of bond sites except C-H bonds in the skeleton of the component A/ the whole bond enthalpy of the C-H bond sites in the skeleton of the component A; PF is the whole bond enthalpy of bond sites except the C-H bond sites in the skeleton of the component B/ the whole bond enthalpy of the C-H bond sites in the skeleton of the component B; XE is the molar fraction of the component A in the composition; XF is the molar fraction of the component B in the composition). The composition is generally preferably cured at 50-150 deg.C.

63. 发明专利

JPH05230185A ELECTRICALLY INSULATING COMPOSITE SHEET MATERIAL HAVING EXCELLENT FLEXIBILITY 失效
公开(公告)号：JPH05230185A
公开(公告)日：1993-09-07
申请号：JP26887292
申请日：1992-10-07
申请人： KOBE STEEL LTD
发明人： FUJISAWA KAZUHISA , YAMAMOTO KOJI
IPC分类号： C08G59/20 , C08G59/00 , C08G59/42 , C08L63/00 , H01B3/40
摘要： PURPOSE:To obtain the subject inexpensive material having heat resistance comparable to those of heat-based aromatic aramid-based polymer widely useful as a heat-resistance insulating material comprising a specific epoxy resin, a curing agent of a polycarboxylic acid polyanhydride and reinforcing fibers. CONSTITUTION:The objective material comprises (A) an epoxy resin (preferably bisphenol A type epoxy resin) having 150-300g/eq epoxy equivalent, (B) a curing agent of a polycarboxylic acid of the formula ((m) is 8-20; (n) is 2-20), (C) reinforcing fibers, (D) a latently curing promoter (preferably latently amine adduct- based promoter and/or latently imidazole-based promoter) and (E) an inorganic filler subjected to surface treatment preferably with a silane coupling agent and has >=3 hours pot life during melt blending at 80 deg.C.

64. 发明专利

JPH05117412A DRAW MOLDING MATERIAL 失效
公开(公告)号：JPH05117412A
公开(公告)日：1993-05-14
申请号：JP31342491
申请日：1991-10-31
申请人： KOBE STEEL LTD
发明人： IDE NORIAKI , FUJIURA TAKAYASU , YAMAMOTO KOJI
IPC分类号： B29B11/16 , B29C70/52 , B29K63/00 , B29K105/08 , C08J5/04 , C08L63/00
摘要： PURPOSE:To obtain a draw molding material which can give a cured molding excellent in heat resistance and strengths. CONSTITUTION:The title material mainly consists of an epoxy resin comprising tetraglycidyl-m-xylenediamine and/or tetraglycidyl-1,3-bisaminomethyl- cyclohexane, a curing agent containing at least one dicarboxylic acid anhydride and a fibrous reinforcement.

65. 发明专利

JPH04283523A PRODUCTION OF DIALKYLNAPHTHALENE 失效
公开(公告)号：JPH04283523A
公开(公告)日：1992-10-08
申请号：JP7456591
申请日：1991-03-13
申请人： KOBE STEEL LTD
发明人： MIFUJI YUTAKA , YAMAMOTO KOJI
IPC分类号： C07B61/00 , B01J29/40 , C07C2/86 , C07C15/24
摘要： PURPOSE:To produce th subject compound in a high yield by, in reaction between alkylnaphthalenes and an alkylating agent in the presence of a porous solid acid catalyst, divisionally adding the alkylating agent and improving conversion of naphthalene and selectivity of the objective compound. CONSTITUTION:In production of dialkylnaphthalenes by using alkylnaphthalenes as a raw material and reacting an alkylating agent therewith in the presence of a porous solid acid catalyst (e.g. zeolite), the alkylnaphthalenes are allowed to pass through the inside of a tubular reactor and the alkylating agent is divisionally added from plural positions on the above-mentioned passage in an amount of 2-10 equipvalents in total based on the alkylnaphthalenes so that tha amount of the alkylating agent added at one time may not exceed 1 equipvalent. The alkylating agent is added preferably by making introducing- holes in the tabular reactor and introducing it therethrough or by connecting plural tubular reactors, making introducing-holes at an intermediate position thereof and introducing it therethrough.

66. 发明专利

JPH11104402A SEPARATING OF ALKYLNAPHTHALENE 失效
公开(公告)号：JPH11104402A
公开(公告)日：1999-04-20
申请号：JP27149597
申请日：1997-10-03
申请人： KOBE STEEL LTD , SUMIKA CHEM ANALYSIS SERVICES
发明人： MOTOYUKI MASAHIRO , YAMAMOTO KOJI , YOSHIDA SHINGO , MATSUMOTO YONEZO , NAKAJIMA HISAKO , KUMAZAWA MIDORI , MATSUDA KIMIAKI
IPC分类号： B01D15/08 , C07C7/12 , C07C15/24 , C08G63/189
摘要： PROBLEM TO BE SOLVED: To separate at least one kind of mono or dialkylnaphthalene efficiency from a mixture of alkylnaphthalenes by using a column packed with an optically active chromatographicc separating agent. SOLUTION: An object to be separated is a mixture containing mono and dialkylnaphthalenes and allowed to pass through a column packed with an optically active chromatographic separating agent. The optically active chromategrophic separating agent is not limited particularly if a different adsorption separation property can be exhibited to various kinds of alkylnaphthalenes. For example, cellulose ester derivatives such as cellulose-tris-(4-methylbenzoate), cellulose-tris-(4-ethylbenzoate), or the like, cellulosecarbamate derivatives such as cellulose-tris-(3,5-dimethylphenylcarbamate) or the like, and a compound among ligand exchangers or the like such as rutheniumtrisphenanthroline or the like are available as it is or in a form supported to carriers by adsorption or chemical bond.

67. 发明专利

JPH10218981A PRODUCTION OF BIODEGRADABLE POLYESTER 失效
公开(公告)号：JPH10218981A
公开(公告)日：1998-08-18
申请号：JP2811597
申请日：1997-02-12
申请人： KOBE STEEL LTD
发明人： MAEDA HIROSHI , SHIMIZU KUNIHIKO , MIYAGAWA YUTAKA , FUJISAWA KAZUHISA , YAMAMOTO KOJI
IPC分类号： C08G63/08 , C08G63/78 , C08L101/16
摘要： PROBLEM TO BE SOLVED: To provide a process for producing a biodegradable polyester which contains small amts. of impurities derived from a catalyst or a catalyst diluent. SOLUTION: This is a process for producing a biodegradable polyester by adding a minute amt. of a catalyst to a polymn. material before the polymn. In this process, the catalyst is diluted with a molten polymn. material kept at its m.p. or higher but substantially at a temp. lower than the polymn. initiation temp. and then is added to the polymn. system. This process is suitably applied in producing polylactic acid from lactide.

68. 发明专利

JPH10167997A PRODUCTION OF 2-METHYLNAPHTHALENE 失效
公开(公告)号：JPH10167997A
公开(公告)日：1998-06-23
申请号：JP21959397
申请日：1997-08-14
申请人： KOBE STEEL LTD , MOBIL OIL CORP
发明人： MOTOYUKI MASAHIRO , YAMAMOTO KOJI , MCWILLIAMS JOHN PAUL , SAPRE AJIT VISHWANATH
IPC分类号： B01J29/06 , C07C5/22 , C07C5/27 , C07C15/24
摘要： PROBLEM TO BE SOLVED: To provide a method for producing 2-methylnaphthalene (2-MN), having high selectivity to 2-MN and low conversion to by-product other than methylnaphthalene and capable of keeping catalyst activity over a long period. SOLUTION: In producing 2-MN by isomerizing a raw material containing 1-MN by using a catalyst composition, synthetic zeolite exhibiting peaks at the substantially following lattice spacing (Å) by X ray diffraction is used as the catalyst composition: 12.36±0.4, 11.03±0.2, 8.83±0.14, 6.18±0.12, 6.00±0.10, 4.06±0.07, 3.91±0.07 and 3.42±0.06.

69. 发明专利

JPH09227665A HEAT-RESISTANT UNSATURATED POLYESTER RESIN COMPOSITION, HEAT-RESISTANT FIBER REINFORCED COMPOSITE MATERIAL, AND HEAT-RESISTANT MOLDING COMPRISING THE SAME 失效
公开(公告)号：JPH09227665A
公开(公告)日：1997-09-02
申请号：JP26631996
申请日：1996-10-07
申请人： KOBE STEEL LTD
发明人： YAMAMOTO KOJI , KURI TAKESHI
IPC分类号： C08F283/01 , C08G63/52 , C08G63/553 , C08K7/02 , C08L67/00 , C08L67/06
摘要： PROBLEM TO BE SOLVED: To obtain an unsatd. polyester resin compsn. which is useful for the preparation of a molding required to have heat resistance and high-temp. strength and rigidity. SOLUTION: This heat-resistant unsatd. polyester resin compsn. is composed mainly of: an unsatd. polyester prepd. by reacting a polybasic acid component contg. at least ethylenic unsatd. polybasic acid with a polyhydric alcohol component, and a diluting monomer. 2-Methyl-1,3-propanediol and 1,4- cyclohexanedimethanol are contained as the polyhydric alcohol component in a total amt. of not less than 50mol%, and the molar ratio of 2-methyl-1,3- propanediol to 1,4-cyclohexanedimethanol is brought to (9:1) to (5:5).

70. 发明专利

JPH09176054A PURIFICATION OF CRYSTALLINE SUBSTANCE 失效
公开(公告)号：JPH09176054A
公开(公告)日：1997-07-08
申请号：JP33934195
申请日：1995-12-26
申请人： KOBE STEEL LTD
发明人： NAGAOKA KOICHI , YAMAMOTO KOJI , MOTOYUKI MASAHIRO
IPC分类号： B01D9/02 , C07B63/00 , C07C7/14 , C07C15/24
摘要： PROBLEM TO BE SOLVED: To recover a specific substance of high purity from a mixture containing the specific substance in a high yield through relatively simple operations by concentration the starting mixture up to a certain level of concentration and effecting pressure crystallization. SOLUTION: (A) A liquid mixture or (B) a slurry mixture in which the specific substance partially crystallizes out is subjected to the pressure crystallization to increase the amount of the crystals to prepare the crystals in which the component A is concentrated. Then, the crystals are dissolved in a good solvent for the specific substance and cooled down to recrystallize out the component A. The component A is 2,6-dimethylnaphthalene, the component B contains dimethylnaphthalene isomers and the component C is an alcoholic solvent such as ethanol in this invention.

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