-
公开(公告)号：DE50304141D1
公开(公告)日：2006-08-17
申请号：DE50304141
申请日：2003-04-08
Applicant: BASF AG
Inventor： WINTERLING HELMUT , BENISCH CHRISTOPH , HAHN THILO
Abstract: A process for preparing a polyamide by reacting a mixture which comprises a monomer which has a nitrile group and has at least one other functional group capable of forming a carboxamide group, and comprises water, in the presence of titanium dioxide as catalyst, which comprises using titanium dioxide whose BET surface area, determined to the German standard DIN 66 131 volumetrically by the multipoint method, is in the range from 5 to 35 m2/g.
-
公开(公告)号：CA2535488A1
公开(公告)日：2005-03-03
申请号：CA2535488
申请日：2004-07-15
Applicant: BASF AG
Inventor： WINTERLING HELMUT , BASSLER HANS-JUERGEN , KLAPPERT KARL-HEINRICH , DEININGER JUERGEN , DEMETER JUERGEN , SOETJE OLIVER
Abstract: Disclosed is a method for producing polyamides and the oligomers or mixtures thereof, optionally with additional reaction products, by reacting a reactio n mixture containing monomers that comprise CN groups or -CONH2 groups, other optional polyamide-forming monomers and/or oligomers, and water in a device. Said method is characterized in that the surfaces of the device, which enter in contact with the reaction mixture, are entirely or partly made of a material that is selected among a group comprising: a) an austenitic steel containing 15 to 25 percent by weight of chromium, 3 to 35 percent by weight of nickel, 0 to 10 percent by weight of molybdenum, and other optional alloy components, the balance being made up of iron and the percentages by weight being in relation to a); b) a duplex steel containing 20 to 30 percent by weight of chromium, 3 to 10 percent by weight of nickel, 0 to 5 percent by weight of molybdenum, and other optional alloy components, the balance being made up of iron and the percentages by weight being in relation to b); and c ) a basic nickel alloy containing 12 to 25 percent by weight of chromium, 12 t o 20 percent by weight of molybdenum, and other optional alloy components, the balance being made up of nickel and the percentages being in relation to c). Also disclosed are devices that are used in or intended for such a method.
-
公开(公告)号：DE10313682A1
公开(公告)日：2004-10-07
申请号：DE10313682
申请日：2003-03-26
Applicant: BASF AG
Inventor： DEININGER JUERGEN , DEMETER JUERGEN , GRUBER FREDDY , KORY GAD , SOETJE OLIVER , WINTERLING HELMUT
-
公开(公告)号：CA2519816A1
公开(公告)日：2004-10-07
申请号：CA2519816
申请日：2004-03-19
Applicant: BASF AG
Inventor： DEMETER JURGEN , DEININGER JURGEN , WINTERLING HELMUT , HEEGER MICHAEL , ZEHNER PETER , GANN MARTIN , KORY GAD , SOTJE OLIVER , POLT AXEL , TREULING ULRICH , WEINLE WERNER
Abstract: The invention relates to a method for producing polyamides, their oligomers or mixtures thereof, optionally containing other reaction products, by reacting aminonitriles or dinitriles and diamines or a mixture containing aminonitril e, dinitrile and diamine and optionally additional polyamide-forming monomers and/or oligomers with water in a reactor (1) with a vertical longitudinal axis. According to said method, the reaction product is exfiltrated from the sump in the reactor (1) and accumulated ammonia and optionally other accumulated low-molecular compounds and water are drawn off via the head (2) . The invention is characterised in that the reactor (1) comprises at least tw o chambers (4) arranged in a longitudinal direction one above the other, that the chambers (4) are separated from one another by liquid-tight floors (5), that each chamber (4) is connected to the one (4) immediately below by a respective liquid overflow (6) and a liquid product stream is drawn off via the liquid overflow (6) of the lowest chamber (4), that the gas chamber (7) above the liquid level in each chamber (4) is connected to the respective chamber (4) lying immediately above it via one or several conduits (8), whic h open respectively into a gas diffuser (9) comprising orifices (11) for the discharge of gas below the liquid level. The reactor also comprises at least one respective deflector plate (12) positioned vertically around each gas diffuser (9), the upper end of said plate terminating below the liquid level and the lower end terminating above the liquid-tight floor (5) of the chambe r (4), thus sub-dividing each chamber (4) into one or more compartments suppli ed with gas (13) and one or more compartments without gas (14).
-
公开(公告)号：BG107775A
公开(公告)日：2004-02-27
申请号：BG10777503
申请日：2003-05-07
Applicant: BASF AG
Inventor： WINTERLING HELMUT , FISCHER MICHAEL
Abstract: The invention relates to a method for producing polyamides. Said method is characterised in that the polymerisation of starting monomers is carried out in the presence of between 2.3 and 10 mmol - in relation to 1 mol of carboxamide group of the polyamide - of a compound used as a chain transfer agent, comprising a nitrile group and a functional group capable of forming a carboxamide group. 6 claims, 2 figures
-
Patent Agency Ranking
公开(公告)号：DE10217439A1
公开(公告)日：2003-10-30
申请号：DE10217439
申请日：2002-04-18
Applicant: BASF AG
Inventor： WINTERLING HELMUT , BENISCH CHRISTOPH , HAHN THILO
Abstract: A process for preparing a polyamide by reacting a mixture which comprises a monomer which has a nitrile group and has at least one other functional group capable of forming a carboxamide group, and comprises water, in the presence of titanium dioxide as catalyst, which comprises using titanium dioxide whose BET surface area, determined to the German standard DIN 66 131 volumetrically by the multipoint method, is in the range from 5 to 35 m2/g.
-
公开(公告)号：CA2481456A1
公开(公告)日：2003-10-30
申请号：CA2481456
申请日：2003-04-08
Applicant: BASF AG
Inventor： HAHN THILO , BENISCH CHRISTOPH , WINTERLING HELMUT
Abstract: The invention relates to a method for producing a polyamide by converting a mixture containing a monomer that comprises a nitrile group and at least one additional functional group that is capable of forming a carboxamide group, in addition to water in the presence of titanium dioxide, which acts as the catalyst. Said method is characterised in that the titanium dioxide has a BE T surface area ranging between 5 and 35 m2/g, determined by means of a volumetric process according to a multipoint method, as per the German standard DIN 66 131.
-
公开(公告)号：HU0301517A2
公开(公告)日：2003-10-28
申请号：HU0301517
申请日：2001-11-22
Applicant: BASF AG
Inventor： FISCHER MICHAEL , WINTERLING HELMUT
Abstract: A process for preparing polyamides comprises polymerizing starting monomers in the presence of from 2.3 to 10 mmol, based on 1 mol of carboxamide group of the polyamide, of a chain regulator containing a nitrile group and a functional group capable of forming a carboxamide group.
-
公开(公告)号：BR0016647A
公开(公告)日：2002-10-01
申请号：BR0016647
申请日：2000-12-14
Applicant: BASF AG
Inventor： MOHRSCHLADT RALF , WINTERLING HELMUT , KRAUSS DIETER
Abstract: Polyamides are prepared from aminonitriles and water by(1) reacting the aminonitriles with water at from 180 to 350° C. and such a pressure in the range from 30 to 120 bar that a gaseous phase is present as well as a liquid phase, in a first reaction stage,(2) expanding the reaction mixture obtained in the first reaction stage via an evaporator zone or adiabatically with removal of water and ammonia into a second reaction stage, and(3) postcondensing in the second reaction stage at from 0.1 mbar to 5 bar and from 230 to 320° C.
-
公开(公告)号：DE10114690A1
公开(公告)日：2002-09-26
申请号：DE10114690
申请日：2001-03-23
Applicant: BASF AG
Inventor： WINTERLING HELMUT , BLINNE GERD , VOGEL GUNTER
Abstract: Preparation of a polyamide comprises using a nitrile from 6-aminocapronitrile and adiponitrile in an aqueous reaction mixture and introducing an inert gas. An Independent claim is included for the obtained polyamide.
-
-
-
-
-
-
-
-
-
Search Results
88
records
(took 0.024 seconds)
