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公开(公告)号：DE69909003T2
公开(公告)日：2004-05-06
申请号：DE69909003
申请日：1999-04-01
Applicant: TORAY INDUSTRIES
Inventor： TACHIBANA YASUTO , OKITA SHIGERU , ONISHI KOJI
Abstract: A method of producing a polyamide having an unreacted caprolactam content of from 0 to 0.5 % by weight and an oligomer content of from 0 to 1.25 % by weight and having a relative viscosity in a 0.01 g/ml solution of sulfuric acid at 25 DEG C of from 2.2 to 8.0, comprises a first step of polymerizing a starting material comprising caprolactam, under atmospheric pressure to prepare a polymerization product having an unreacted caprolactam content of not larger than 25 % by weight and an oligomer content falling between 0 and 1.8 % by weight, and a second step of heating the polymerization product prepared in the first step, at a temperature T satisfying the following formula (1) and under reduced pressure to thereby remove the unreacted caprolactam and the oligomer from it:
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公开(公告)号：DE69909003D1
公开(公告)日：2003-07-31
申请号：DE69909003
申请日：1999-04-01
Applicant: TORAY INDUSTRIES
Inventor： TACHIBANA YASUTO , OKITA SHIGERU , ONISHI KOJI
Abstract: A method of producing a polyamide having an unreacted caprolactam content of from 0 to 0.5 % by weight and an oligomer content of from 0 to 1.25 % by weight and having a relative viscosity in a 0.01 g/ml solution of sulfuric acid at 25 DEG C of from 2.2 to 8.0, comprises a first step of polymerizing a starting material comprising caprolactam, under atmospheric pressure to prepare a polymerization product having an unreacted caprolactam content of not larger than 25 % by weight and an oligomer content falling between 0 and 1.8 % by weight, and a second step of heating the polymerization product prepared in the first step, at a temperature T satisfying the following formula (1) and under reduced pressure to thereby remove the unreacted caprolactam and the oligomer from it:
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公开(公告)号：ES2200470T5
公开(公告)日：2007-08-16
申请号：ES99302646
申请日：1999-04-01
Applicant: TORAY INDUSTRIES
Inventor： TACHIBANA YASUTO , OKITA SHIGERU , ONISHI KOJI
Abstract: LA INVENCION SE REFIERE A UN PROCEDIMIENTO DE PRODUCCION DE UNA POLIAMIDA QUE PRESENTA UN CONTENIDO DE CAPROLACTAMA SIN REACCIONAR DEL 0,5 % EN PESO, Y UN CONTENIDO DE OLIGOMERO DEL 0 AL 1,25 % EN PESO, Y QUE PRESENTA UNA VISCOSIDAD RELATIVA EN UNA SOLUCION DE 0,01 G/ML DE ACIDO SULFURICO A 25 C, DE 2,2 A 8,0. DICHO PROCEDIMIENTO COMPRENDE UNA PRIMERA FASE CONSISTENTE EN POLIMERIZAR UN MATERIAL DE PARTIDA QUE COMPRENDE UN CONTENIDO DE CAPROLACTAMA NO SUPERIOR AL 25 % EN PESO Y UN CONTENIDO DE OLIGOMERO ENTRE EL 0 Y EL 1,8 % EN PESO; Y UNA SEGUNDA FASE CONSISTENTE EN CALENTAR EL PRODUCTO DE POLIMERIZACION PREPARADO EN LA PRIMERA FASE, A UNA TEMPERATURA T, QUE SATISFACE LA SIGUIENTE FORMULA (1) Y BAJO PRESION REDUCIDA, PARA ELIMINAR ASI LA CAPROLACTAMA QUE NO HA REACCIONADO Y EL OLIGOMERO. PUNTO DE TRANSICION VITREO DE LA POLIAMIDA
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公开(公告)号：DE69909003T3
公开(公告)日：2007-07-12
申请号：DE69909003
申请日：1999-04-01
Applicant: TORAY INDUSTRIES
Inventor： TACHIBANA YASUTO , OKITA SHIGERU , ONISHI KOJI
Abstract: A method of producing a polyamide having an unreacted caprolactam content of from 0 to 0.5 % by weight and an oligomer content of from 0 to 1.25 % by weight and having a relative viscosity in a 0.01 g/ml solution of sulfuric acid at 25 DEG C of from 2.2 to 8.0, comprises a first step of polymerizing a starting material comprising caprolactam, under atmospheric pressure to prepare a polymerization product having an unreacted caprolactam content of not larger than 25 % by weight and an oligomer content falling between 0 and 1.8 % by weight, and a second step of heating the polymerization product prepared in the first step, at a temperature T satisfying the following formula (1) and under reduced pressure to thereby remove the unreacted caprolactam and the oligomer from it:
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Patent Agency Ranking
公开(公告)号：ES2200470T3
公开(公告)日：2004-03-01
申请号：ES99302646
申请日：1999-04-01
Applicant: TORAY INDUSTRIES
Inventor： TACHIBANA YASUTO , OKITA SHIGERU , ONISHI KOJI
Abstract: A method of producing a polyamide having an unreacted caprolactam content of from 0 to 0.5 % by weight and an oligomer content of from 0 to 1.25 % by weight and having a relative viscosity in a 0.01 g/ml solution of sulfuric acid at 25 DEG C of from 2.2 to 8.0, comprises a first step of polymerizing a starting material comprising caprolactam, under atmospheric pressure to prepare a polymerization product having an unreacted caprolactam content of not larger than 25 % by weight and an oligomer content falling between 0 and 1.8 % by weight, and a second step of heating the polymerization product prepared in the first step, at a temperature T satisfying the following formula (1) and under reduced pressure to thereby remove the unreacted caprolactam and the oligomer from it:
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公开(公告)号：ID22361A
公开(公告)日：1999-10-07
申请号：ID990302
申请日：1999-04-01
Applicant: TORAY INDUSTRIES
Inventor： TACHIBANA YASUTO , OKITA SHIGERU , ONISHI KOJI
Abstract: A method of producing a polyamide having an unreacted caprolactam content of from 0 to 0.5 % by weight and an oligomer content of from 0 to 1.25 % by weight and having a relative viscosity in a 0.01 g/ml solution of sulfuric acid at 25 DEG C of from 2.2 to 8.0, comprises a first step of polymerizing a starting material comprising caprolactam, under atmospheric pressure to prepare a polymerization product having an unreacted caprolactam content of not larger than 25 % by weight and an oligomer content falling between 0 and 1.8 % by weight, and a second step of heating the polymerization product prepared in the first step, at a temperature T satisfying the following formula (1) and under reduced pressure to thereby remove the unreacted caprolactam and the oligomer from it:
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公开(公告)号：JPH10180877A
公开(公告)日：1998-07-07
申请号：JP34968296
申请日：1996-12-27
Applicant: TORAY INDUSTRIES
Inventor： TACHIBANA YASUTO , TERADA MIKI , KOBAYASHI KAZUHIKO
IPC: B29C65/06 , B29K77/00 , B29K105/12 , B29K509/08 , B29L22/00 , B29L23/00
Abstract: PROBLEM TO BE SOLVED: To provide a vibration welded molded product improved in the strength of a welded part. SOLUTION: This molded product is composed of a nylon resin compsn. and constituted by bonding two or more molded pieces having vibration welding surfaces constituted of curved surfaces or a plurality of curved surfaces and flat surfaces by vibration welding. In this case, the thickness of the molten and re-solidified layer of a welded part is set to 40μm or more over the total welded part and the difference between the max. thickness and min. thickness of the melted and re-solidified layer is set to 50μm or less.
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8.发明公开POLYLACTIC ACID RESIN COMPOSITION, AND METHOD FOR PRODUCING MOLDED ARTICLE AND POLYLACTIC ACID RESIN COMPOSITION 审中-公开多元酸酸性树脂组合物及其制造方法及多元酸性树脂组合物
公开(公告)号：EP2907849A4
公开(公告)日：2016-06-08
申请号：EP13844751
申请日：2013-09-12
Applicant: TORAY INDUSTRIES
Inventor： TAKAHASHI YOSHITAKE , NAOTSUKA TAKUMA , TACHIBANA YASUTO , OME HIROYUKI
IPC: C08L67/04 , C08G63/06 , C08K3/32 , C08L101/16
CPC classification number: C08K3/32 , C08G63/06 , C08K2003/324 , C08K2003/325 , C08L67/04 , C08L101/16 , C08L2205/02
Abstract: A polylactic acid resin composition includes: 0.005 parts by weight to 1.2 parts by weight of a metal phosphate represented by General Formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒMxHyPOz€ƒ€ƒ€ƒ€ƒ€ƒ(1) (in General Formula (1), M is an alkali metal atom or an alkaline earth metal atom, and x, y, and z are integers satisfying 1 ‰¤ x ‰¤ 2, 1 ‰¤ y ‰¤ 4, and 2 ‰¤ z ‰¤ 8, respectively) with respect to 100 parts by weight of a polylactic acid resin including a poly-L-lactic acid component and a poly-D-lactic acid component, wherein a crystallization enthalpy of crystals (J/g) of the polylactic acid resin is not less than 5 J/g when a temperature of the polylactic acid resin composition is increased to 250°C, and the temperature is kept constant for 3 minutes, followed by decreasing the temperature at a cooling rate of 20°C/min in differential scanning calorimetry.
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公开(公告)号：EP1359179A4
公开(公告)日：2004-12-15
申请号：EP01271411
申请日：2001-12-17
Applicant: TORAY INDUSTRIES
Inventor： TACHIBANA YASUTO , NODA MINORU , NISHIMURA TORU
Abstract: A mixture consisting substantially of caprolactam and water is heated for 30 minutes or shorter to obtain a polyamide prepolymer having an amino group content of 0.1 mmol/g or higher and a cyclic oligomer content of 0.6 wt.% or lower. An aqueous caprolactam solution having a water content of 2 to 20 wt.% is heated under pressure at 200 to 330°C for 1 to 30 minutes to obtain a polyamide prepolymer having an amino group content of 0.1 mmol/g or higher and a cyclic oligomer content of 0.6 wt.% or lower.
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