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1.发明授权KONTINUIERLICHES VERFAHREN ZUR TROCKNUNG UND NACHKONDENSATION VON GRANULAT, ANLAGE ZUR DURCHFÜHRUNG DES VERFAHRENS, UND VERWENDUNG DER ANLAGE UND DES VERFAHRENS 有权连续工艺，干燥和postcondensing GRANULAT，植物具体实施方法，以及系统和方法的使用
公开(公告)号：EP1235671B1
公开(公告)日：2003-09-10
申请号：EP00993245.0
申请日：2000-11-29
发明人： LUDWIG, Alfons , PILLE, Ragnhild , PIPPER, Gunter
CPC分类号： F26B21/14 , B29B13/065 , B29B2009/168 , B29K2067/00 , B29K2077/00 , F26B17/122
摘要： The invention relates to a device (1) for drying and thermally treating granulates with an inert gas stream. Said device has a cuboidal base body (2) comprising an inlet (3) for the granulate in the upper part and an outlet (4) in the lower part. Said device has an inlet (5) on a side surface and an outlet (6) on the opposite side surfaces of the cuboidal base body (2) for the inert gas stream. Said device also comprises a distribution and retaining device (7, 8) in the region of the inlet (5) and outlet (6) of the inert gas stream which substantially extend over the total vertical cross-section of the cuboidal base body (2).
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2.发明公开
公开(公告)号：EP1194473A1
公开(公告)日：2002-04-10
申请号：EP00935168.5
申请日：2000-06-05
IPC分类号： C08G69/20
摘要： The invention relates to a method for preparing polyamides by reacting at least one lactam and optionally other polyamide-forming monomers with aqueous monomeric and oligomeric extracts obtained when the polymer is extracted with water in the production of polyamides, whereby the water content of the reaction mixture ranges from 0.5 to 13 percent by weight. According to said method, reaction is carried out in the presence of metal oxides, beta zeolites, sheet silicates or silica gels which may de doped as heterogeneous catalysts. The heterogeneous catalysts are used in a form enabling mechanical separation from the reaction mixture and removal from the reaction mixture during or after conclusion of polymerization
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公开(公告)号：EP0775167B1
公开(公告)日：1999-04-21
申请号：EP95927741.9
申请日：1995-07-28
发明人： KRONER, Matthias , SCHORNICK, Gunnar , FEINDT, Hans-Jacob , MEYER, Thomas , LUDWIG, Alfons , METZMANN, Udo
CPC分类号： C08G69/10 , C02F5/12 , C08G73/1092 , C11D3/3719
摘要： Disclosed is a method for producing polyaspartic acid by means of condensation polymerization of finely divided aspartic acid at temperatures above 150 DEG C in the presence of acid catalysts, the acid catalysts being first brought into contact with the finely divided aspartic acid in the reaction zone in which the condensation polymerization takes place.
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公开(公告)号：EP1030872A1
公开(公告)日：2000-08-30
申请号：EP98967143.3
申请日：1998-11-24
摘要： A process is disclosed for continuously extracting polyamide particles from a circulating extraction solution in a vertical extraction column subdivided into two zones. The polyamide is treated in the first zone with an aqueous ε-caprolactam solution with 15-40 wt. % ε-caprolactam as extraction agent at 100 to 140 °C, and water is then used in the second zone as extraction agent at a temperature 5-40 °C lower. The process allows polyamides with a low monomer and oligomer content to be economically extracted.
摘要翻译： 公开了一种用于在细分为两个区域的垂直萃取塔中从循环萃取溶液中连续萃取聚酰胺颗粒的方法。 聚酰胺在第一区中用含15-40wt。％的ε-己内酰胺溶液处理。 ％ε-己内酰胺作为萃取剂在100至140℃下进行，然后在第二区域中使用水作为萃取剂，温度低于5-40℃。 该方法允许经济地提取具有低单体和低聚物含量的聚酰胺。
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公开(公告)号：EP0922065A2
公开(公告)日：1999-06-16
申请号：EP97944794.0
申请日：1997-08-26
发明人： WEISS, Robert , KRAUSS, Dieter , KELLER, Dieter , PIPPER, Gunter , HARDER, Wolfgang , LUDWIG, Alfons , MOHRSCHLADT, Ralf
IPC分类号： C08G69
摘要： A process for producing a polyamide by reacting at least one aminonitrile with water has the following steps: (1) at least one aminonitrile is reacted with water at a temperature from 100 to 360 °C and pressure from 0.1 to 35.x 106 Pa, yielding a reaction mixture; (2) the reaction mixture is further reacted at a temperature from 150 to 400 °C and pressure lower than the pressure in step 1. The temperature and pressure are selected to yield a first gaseous phase and a first liquid or solid phase or a mixture of a first solid and a first liquid phase. The first gaseous phase is separated from the first liquid or solid phase or the mixture of a first liquid and a first solid phase is separated; and (3) the first liquid or solid phase or the mixture of a first liquid and first solid phase is mixed with a water-containing gaseous or liquid phase at a temperature from 150 to 360 °C and pressure from 0.1 to 30 x 106 Pa, yielding a product mixture. Also disclosed are other embodiments of this process and the thus produced polyamides.
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公开(公告)号：EP0777696A1
公开(公告)日：1997-06-11
申请号：EP95929870.0
申请日：1995-08-16
发明人： KRONER, Matthias , SCHORNICK, Gunnar , STROTMANN, Uwe , SCHWENDEMANN, Volker , MEYER, Thomas , LUDWIG, Alfons
CPC分类号： C02F5/12 , C08G73/1092 , C11D3/3719
摘要： A process is disclosed for preparing polyaspartic acid salts by treating polycondensates in an aqueous medium with bases. At least 0.7 equivalents of an alkaline metal and/or alkaline earth metal base per mole of the aspartic acid, aspartic acid imide and/or amide units contained in the polycondensates are used. The bases are added during 30 minutes to 20 hours to an aqueous suspension of the polycondensates of aspartic acid heated up to 40 to 140 °C, and the reaction mixture is optionally allowed to continue to react. These alkaline metal and/or alkaline earth metal salts of polyaspartic acids obtained by treating aspartic acid polycondensates in an aqueous medium with more than 1 equivalent of an alkaline metal and/or alkaline earth metal base for reducing the molar mass of polycondensates are used as additives for washing and cleaning agents.
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7.发明授权
公开(公告)号：EP1194473B1
公开(公告)日：2003-04-23
申请号：EP00935168.5
申请日：2000-06-05
IPC分类号： C08G69/20
摘要： The invention relates to a method for preparing polyamides by reacting at least one lactam and optionally other polyamide-forming monomers with aqueous monomeric and oligomeric extracts obtained when the polymer is extracted with water in the production of polyamides, whereby the water content of the reaction mixture ranges from 0.5 to 13 percent by weight. According to said method, reaction is carried out in the presence of metal oxides, beta zeolites, sheet silicates or silica gels which may de doped as heterogeneous catalysts. The heterogeneous catalysts are used in a form enabling mechanical separation from the reaction mixture and removal from the reaction mixture during or after conclusion of polymerization
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公开(公告)号：EP1034208B1
公开(公告)日：2002-09-11
申请号：EP98962391.3
申请日：1998-11-24
发明人： ERBES, Jörg , LUDWIG, Alfons , PIPPER, Gunter
CPC分类号： C08G69/46 , B01D11/0242 , C08G69/04 , C08G69/16
摘要： A process is disclosed for continuously extracting polyamide particles from a circulating extraction solution in a vertical extraction column subdivided into two zones. The polyamide is treated in the first zone with an aqueous epsilon -caprolactam solution with 40-95 wt. % epsilon -caprolactam as extraction agent at 100 to 140 DEG C, then subsequently treated with water in the second zone. Finally, the caprolactam can be extracted in a manner known per se. The process allows polyamide with a low dimer content to be economically produced.
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公开(公告)号：EP1030872B1
公开(公告)日：2002-02-06
申请号：EP98967143.3
申请日：1998-11-24
摘要： A process is disclosed for continuously extracting polyamide particles from a circulating extraction solution in a vertical extraction column subdivided into two zones. The polyamide is treated in the first zone with an aqueous epsilon -caprolactam solution with 15-40 wt. % epsilon -caprolactam as extraction agent at 100 to 140 DEG C, and water is then used in the second zone as extraction agent at a temperature 5-40 DEG C lower. The process allows polyamides with a low monomer and oligomer content to be economically extracted.
摘要翻译： 公开了一种用于在细分为两个区域的垂直萃取塔中从循环萃取溶液中连续萃取聚酰胺颗粒的方法。 聚酰胺在第一区用含有15-40wt。％的ε-己内酰胺溶液处理。 ％ε-己内酰胺作为萃取剂，在100-140℃下，然后在第二区作为萃取剂，在5-40℃的温度下使用水。 该方法允许经济地提取具有低单体和低聚物含量的聚酰胺。
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公开(公告)号：EP0777696B1
公开(公告)日：1998-02-25
申请号：EP95929870.4
申请日：1995-08-16
发明人： KRONER, Matthias , SCHORNICK, Gunnar , STROTMANN, Uwe , SCHWENDEMANN, Volker , MEYER, Thomas , LUDWIG, Alfons
CPC分类号： C02F5/12 , C08G73/1092 , C11D3/3719
摘要： A process is disclosed for preparing polyaspartic acid salts by treating polycondensates in an aqueous medium with bases. At least 0.7 equivalents of an alkaline metal and/or alkaline earth metal base per mole of the aspartic acid, aspartic acid imide and/or amide units contained in the polycondensates are used. The bases are added during 30 minutes to 20 hours to an aqueous suspension of the polycondensates of aspartic acid heated up to 40 to 140 DEG C, and the reaction mixture is optionally allowed to continue to react. These alkaline metal and/or alkaline earth metal salts of polyaspartic acids obtained by treating aspartic acid polycondensates in an aqueous medium with more than 1 equivalent of an alkaline metal and/or alkaline earth metal base for reducing the molar mass of polycondensates are used as additives for washing and cleaning agents.
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