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1. 发明专利

JPH06346676A DRILLING MACHINE 失效
公开(公告)号：JPH06346676A
公开(公告)日：1994-12-20
申请号：JP13594193
申请日：1993-06-07
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP , KUMAGAI GUMI CO LTD , EBARA CORP
发明人： NASU TOSHIYUKI , YOKOYAMA ISAO , TAGO YUICHI , HAYASHIDA MICHIYA , SEKIGUCHI RYUICHI , SAKAI YUKIO , SHIMAZAKI KEISUKE , HARADA KAZUAKI , ONO TAKASHI , ONISHI TAKESHI , TAKAGI KIYOKAZU
IPC分类号： E21B7/04 , E21B7/18
摘要： PURPOSE:To execute drilling work under stabilized and uniform state by attaching an outer tube to a driving motor of a drilling machine through supports and by jetting water jet through a nozzle. CONSTITUTION:An outer tube 8 is attached to the outside of a driving motor 2 through a plurality of supports 7, and end edge 8a of the outer tube is positioned in front of a nozzle 1. When drilling a bore, water jet 4 is ejected through a nozzle 1 while the nozzle is driven in revolution by the driving motor 2, and a drilling machine A is thrust forward with a propelling device. The drilling machine is moved forward continuously at a speed corresponding to the drilling speed by the water jet 4, and excavated earth is allowed to flow, together with the jetting water, to a bore 6 through a gap between the internal wall of the outer tube 8 and the outer circumference of the driving motor 2, and is furthermore discharged to the outside. Thereby, the drilled bore 6 is made in a uniform size slightly larger than the external size of the outer tube 8, and the drilling is made stably without being influenced by self-weight of the drilling machine even in the case of horizontal drilling.

2. 发明专利

JPS6399231A SOLUBLE AND HEAT-RESISTANT COPOLYAMIDE 失效
公开(公告)号：JPS6399231A
公开(公告)日：1988-04-30
申请号：JP4768887
申请日：1987-03-04
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： TERAMOTO TAKEO , HARADA KAZUAKI , INOUE HIROHARU
IPC分类号： C08G69/26 , C08G69/32
摘要： PURPOSE:To obtain the titled copolymer, having a specific structure derived from a phthalic acid derivative and bis(aminophenyl)fluorenes and a diamine and having excellent solubility, high heat resistance, good thermal moldability, mechanical as well as electrical characteristics, etc. CONSTITUTION:A copolymer having a structure expressed by formula I [X is formula II; Y consists of a chain member expressed by formula III (R is H, CH3 or C2H5) and the formula -CnH2n-(n is 2-8)] and >=0.25dl/g intrinsic viscosity (etainh) measured by using a solution in 0.5g/100ml concentration in dimethylacetamide as a solvent as 30 deg.C. As raw materials for the above- mentioned copolymer, terephthaloyl chloride is preferred as a raw material for the component expressed by formula II and 1,3-propylenediamine is preferred as a raw material for the component expressed by the formula -CnH2n-. For example, 9,9-bis(4-aminophenyl)fluorene, etc., are used as the raw material for the component expressed by formula III. The above-mentioned copolymer is preferably obtained by polymerizing such raw materials in a solvent while cooling.

3. 发明专利

JPS6346221A HEAT-RESISTANT POLYAMIDE 失效
公开(公告)号：JPS6346221A
公开(公告)日：1988-02-27
申请号：JP4768987
申请日：1987-03-04
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： TERAMOTO TAKEO , HARADA KAZUAKI , INOUE HIROHARU
IPC分类号： C08G69/26 , C08G69/32
摘要： PURPOSE:To provide the titled novel polymer having a specific structure and a controllable glass transition point and injection moldable while keeping high heat-resistance owing to the selectability of the combination of the glass transition point and heat-resistance over a wide range. CONSTITUTION:The objective polymer is composed of the structure of formula I [X is group of formula II (R is H, CH3, etc.); Y is group of formula III or IV (n is integer of 2-6); m is number of recurring units] wherein the ratio of the unit of formula II in the component Y is 1-99mol% and that of the unit of formula III is 99-1mol%. It has an intrinsic viscosity etainh of >=0.25dl/g measured at 30 deg.C as a solution produced by dissolving the polymer in dimethylacetamide at a concentration of 0.5g/100ml. The polymer can be produced e.g. by reacting a 9,9-bis(4-aminophenyl)fluorene compound with a mixture of terephthalic acid chloride and adipic acid chloride constituting the component Y in a solvent such as dimethylacetamide.

4. 发明专利

JPS62230823A SOLUBLE AND HEAT-RESISTANT POLYAMIDE 失效
公开(公告)号：JPS62230823A
公开(公告)日：1987-10-09
申请号：JP28166186
申请日：1986-11-28
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： TERAMOTO TAKEO , HARADA KAZUAKI , INOUE HIROHARU
IPC分类号： C08G69/32 , C08G69/48
摘要： PURPOSE:A polyamide, having a specific structure with amide bonds at the terminals and improved heat resistance, solubility as well as processability and suitable for colorless coating materials or films. CONSTITUTION:A polyamide which is an organic high polymer polyamide expressed by formula I [R is alkyl or aromatic group; Y is formula II (R is H, CH3 or C2H5); X is formula III or IV; n is the number of repeating units] and having terminal amide bonds and further at least 0.30dl/g intrinsic viscosity (etainh) measured in a solution of 0.5g above-mentioned polyamide in 100ml dimethylacetamide. The intrinsic viscosity is preferably >=0.35dl/g and the polyamide is soluble in at least pyridine, m-cresol and o-chlorophenol. R in formula I is preferably methyl, ethyl or phenyl.

5. 发明专利

JPS63309525A SOLUBLE POLYAMIDE-IMIDE 失效
公开(公告)号：JPS63309525A
公开(公告)日：1988-12-16
申请号：JP14516187
申请日：1987-06-12
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： TERAMOTO TAKEO , HARADA KAZUAKI
IPC分类号： C08G73/14
摘要： PURPOSE:To obtain the title compound excellent in heat resistance, organic solvent solubility, mechanical properties and electrical properties, having a specified structural formula. CONSTITUTION:The title polyamide-imide having a structure of formula I (wherein m and n are integers each representing the number of recurring units, X is a group of formula II or III, Y is a group of formula VI, the molar ratio of component X to component Y is 1-99/99-1, Z is a group of formula V, and R is CH3 or C2H5), having an intrinsic viscosity >=0.2dl/g (in a solution of 0.5g of polymer in dimethylacetamide at 30 deg.C), not flowing at 300 deg.C or below and having an initial decomposition temperature >=400 deg.C is obtained by, for example, a process comprising dissolving 9,9-bis(4-aminophenyl)fluorene and benzophenonetetracarboxylic acid in N-methyl-2-pyrrolidone, adding toluene to this solution, heating the resulting mixture to about 170 deg.C to distil off the water followed by cooling to about 5 deg.C, and adding terephthaloyl chloride slowly to the solution.

6. 发明专利

JPS6346225A SOLUBLE POLYIMIDE 失效
公开(公告)号：JPS6346225A
公开(公告)日：1988-02-27
申请号：JP4768787
申请日：1987-03-04
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： TERAMOTO TAKEO , HARADA KAZUAKI , INOUE HIROHARU
IPC分类号： C08G73/10 , B01D71/64
摘要： PURPOSE:To provide a soluble polyimide composed of constituent unit of a specific structural formula, having an intrinsic viscosity falling within a specific range, having improved solubility in solvents and high heat-resistance and useful for paint, hollow fiber, etc. CONSTITUTION:The objective soluble polyimide is essentially expressed by formula -(X-Y)- [X is composed of the group of formula I and II (preferably the molar ratio of I:II is 1:99-60:40); Y is group of formula III] and has an intrinsic viscosity (etainh) of >=0.25dl/g (in 0.5g/100ml o-chlorophenol solution at 30 deg.C). The polymer can be produced e.g. by reacting 9,9-bis(4-aminophenyl) fluorene, pyromellitic dianhydride and benzophenonetetracarboxylic acid dianhydride in a solvent such as m-cresol at 120-180 deg.C for 1-3hr. The soluble polyimide is soluble in one or more solvents selected from dimethylacetamide, N-methylpyrrolidone, m-cresol, o-chlorophenol and methylene chloride.

7. 发明专利

JPH02127426A SOLUBLE POLYAMIDE HAVING HIGH STRENGTH AND PRODUCTION THEREOF 失效
公开(公告)号：JPH02127426A
公开(公告)日：1990-05-16
申请号：JP27943388
申请日：1988-11-07
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： TERAMOTO TAKEO , HARADA KAZUAKI
IPC分类号： C08G69/26 , C08G69/28
摘要： PURPOSE:To readily and inexpensively obtain a polyamide having a specific intrinsic viscosity and excellent heat resistance and solubility of organic solvent and high strength, high modulus and high elongation by reacting a specific diamine component with a dicarboxylic acid derivative and then reacting a specific amount of tetramine component therewith. CONSTITUTION:An aromatic diamine [e.g. 9,9-bis(4-aminophenyl)fluorene] expressed by the formula (R is H, CH3, etc.) or diamine component (e.g., an aromatic diamine containing methylene diamine, etc.) containing the above- mentioned aromatic diamine is reacted with a dicarboxylic acid derivative (e.g., terephthalic acid derivative), (preferably at 10-80 deg.C for 10min-1hr) and a tetramine component (e.g., 3,3'-diaminobenzidine) having molar ratio of 3,3- diamine component : tetramine component of 95:5-99.9:0.1 is added and reacted therewith to provide the aimed polyamide having >=0.50dl/g intrinsic viscosity at 30 deg.C when 0.5 g polyamide is dissolved in 100ml dimethylacetoamide.

8. 发明专利

JPH01194905A SEPARATION MEMBRANE OF POLYIMIDE 失效
公开(公告)号：JPH01194905A
公开(公告)日：1989-08-04
申请号：JP1584488
申请日：1988-01-28
申请人： NIPPON STEEL CORP
发明人： KAZAMA SHINGO , SAKASHITA MASAO , HARADA KAZUAKI , TERAMOTO TAKEO
IPC分类号： B01D53/22 , B01D71/64 , C01B13/02
摘要： PURPOSE:To obtain a gas separation membrane having high heat resisting mechanical properties and high gas permeability, wherein method for forming membranes is simple, causing membranes to be easily formed into asymmetrical hollow yarn membranes, handling thereof being easy, by using polyimide of aromatic condensed ring represented by a specific formula as a material for forming membrane. CONSTITUTION:Pyromellitic acid dianhydride or benzophenon tetracarboxylic acid dianhydride is reacted with 9,9-bis(4-aminophenyl)fluorene in m-cresol to obtain polyimide, comprising either (a) or (b), or a mixture of (a) and (b) represented by the general formulas, wherein R: H, CH3, C2H5, which is used as a material for membranes. The polyimide is dissolved into a solvent such as N,N-dimethyl acetamide, etc., to prepare a raw liquid for producing membranes, whereby wet hollow yarn membranes are formed by wet-type membrane forming method. By removing solvent from said wet hollow yarn membranes and drying them, gas separation membranes are obtained, which are effective as oxygen-enriching membranes to supply oxygen-enriched air even at high temperatures, as hydrogen separation membranes of high thermal resistance, and as carbon dioxide separation membranes of high thermal resistance.

9. 发明专利

JPS6399230A SOLUBLE POLYAMIDE 失效
公开(公告)号：JPS6399230A
公开(公告)日：1988-04-30
申请号：JP28166286
申请日：1986-11-28
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： TERAMOTO TAKEO , HARADA KAZUAKI , INOUE HIROHARU
IPC分类号： C08G69/32 , C08G69/48
摘要： PURPOSE:To obtain the titled novel polymer, having a specific structure derived from bis(aminophenyl)fluorenes and phthalic acid derivatives and having improved solubility, heat resistance as well as processability and further chemical resistance, durability, etc. CONSTITUTION:A high-molecular weight polyamide, consisting of a chain member expressed by formula I [R is H, CH3 or C2H5; X is formula II or III; Y is formula IV (R is R ; n is the number of repeating units) and having >=0.3dl/g intrinsic viscosity (etainh) measured by using a solution in 0.5g/100ml concentration in dimethylacetamide as a solvent at 30 deg.C and 280-420 deg.C glass transition temperature as well as >=420 deg.C decomposition temperature in air. The above- mentioned polymer is obtained by polymerizing 9,9-bis(4-aminophenyl)fluorene with a terephthaloyl chloride in a solvent, e.g. dimethylacetamide, etc., while cooling.

10. 发明专利

JPS62292836A PREPARATION OF SOLUBLE POLYIMIDE 失效
公开(公告)号：JPS62292836A
公开(公告)日：1987-12-19
申请号：JP13588586
申请日：1986-06-13
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： TERAMOTO TAKEO , HARADA KAZUAKI
IPC分类号： C08G73/10
摘要： PURPOSE:To obtain a soluble polyimide having high heat resistance and being formable into film, by polymerizing pyromellitic acids with 9,9-bis(4- aminophenyl)fluorenes under a specified condition. CONSTITUTION:About equal mole of pyromellitic acids and 9,9-bis(4- aminophenyl)fluorenes are polymerized in a phenolic solvent while the water formed by the reaction is being removed from the reacting mixt. and the temp. is being elevated up to 180-250 deg.C. As the pyromellitic acids to be used, pyromellitic dianhydride is the most preferable. As the solvent, o-chlorohpenol or m-cresol is preferable. As the rate of elevating temp., a rate as slow as about 1 deg.C/min is preferable to stablize the physical properties of the polyimide obtained.

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