公开(公告)号：WO2007107584A3

公开(公告)日：2008-01-31

申请号：PCT/EP2007052681

申请日：2007-03-21

Applicant: BASF AG ,  SEIBRING JOACHIM ,  BECKER JENS ,  KOPIETZ MICHAEL ,  BRUCKMANN THEODOR

Inventor： SEIBRING JOACHIM ,  BECKER JENS ,  KOPIETZ MICHAEL ,  BRUCKMANN THEODOR

IPC: B29B9/06 ,  B29C44/34 ,  B29C47/30

CPC classification number: B29B9/065 ,  B29C44/3461 ,  B29C47/0011 ,  B29C47/0066 ,  B29C47/0071 ,  B29C47/0073 ,  B29C47/0872 ,  B29C47/30 ,  B29C47/864 ,  B29C2791/007 ,  B29C2793/0027 ,  B29K2077/00

Abstract: The invention relates to a method for granulating polymer melts in a granulation chamber in which a cutting device is accommodated at a pressure above ambient pressure. In a first step, the granulating chamber is flooded with a gas which is inert in relation to the polymer melt and has a pressure at which granulation is carried out. The polymer melt is then injected into the granulating chamber. The gas is finally expelled from the granulating chamber by a liquid once the polymer melt starts to flow through the cutting device, the melt being cut into pellets.

Abstract translation: 本发明涉及一种用于造粒聚合物熔体在其中切割装置中的安装了粒化室，在环境压力以上的压力的方法。 在第一步骤中造粒室与一个相反的聚合物熔体淹没具有在该造粒进行的压力的惰性气体。 此后，将聚合物熔体注入造粒室。 最后，从造粒室中的气体通过液体置换，只要聚合物熔体开始通过切割器，其被切成颗粒流动。

公开(公告)号：CA2208226C

公开(公告)日：2005-02-15

申请号：CA2208226

申请日：1995-12-01

Applicant: BASF AG

Inventor： BASSLER PETER ,  KOPIETZ MICHAEL

IPC: B03B9/06 ,  C07D201/12 ,  C08J11/14 ,  C07D223/10

Abstract: Disclosed is a method of obtaining caprolactam from polymers containing caprolactam in the presence of superheated water. The proposed method is based on the use of polymers containing the repeating uni t - [-N(H)-(CH2)5-C(O)-]- or mixtures consisting essentially of: 40-99.99 wt.% of a polymer containing the repeating unit -[-N(H)-(CH2)5- C(O)-]-;0.01-50 wt.% of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes; 0- 10 wt.% of organic and/or inorganic additives; 0-40 wt.% of polymers which do not contain polyamide; 0-60 wt.% of polyamides with the exception of polycaprolactam and copolyamides based on caprolactam. These polymers or mixtures are brought into contact with superheated water at a temperature of 280-320 .degree.C and at a pressure of 7.5-15 Mpa, the weight ratio of water to the polymer containing the repeating unit -[-N(H)-(CH2)5-C(O)-]- being between 5:1 and 13:1 and the reaction time less than 3 hours. The reaction mixture consisting essentially of water and the polymers or mixture indicated above should contain no gaseous phase under the conditions of hydrolysis.

公开(公告)号：DE59600972D1

公开(公告)日：1999-01-21

申请号：DE59600972

申请日：1996-03-28

Applicant: BASF AG

Inventor： GOETZ WALTER ,  HOFMANN JUERGEN ,  KOPIETZ MICHAEL ,  HORLE HELMUT

IPC: C08G69/26 ,  C08G69/04 ,  C08G69/28 ,  C08G73/10 ,  G03F7/004 ,  G03F7/038 ,  G11B5/48 ,  G11B21/00 ,  H05K1/05

Abstract: A polymer based on a dicarboxylic acid and a diamine is prepared by polycondensation in an extruder, by(a) heating a mixture of a dicarboxylic acid having from 4 to 12 carbon atoms and a diamine having from 4 to 12 carbon atoms, which mixture is solid at room temperature and has a residual moisture content of less than 5% by weight, to a temperature in the range from 150 to 400° C. under autogenous pressure in a contrarotating twin-screw extruder to give a product A,(b) feeding the product A to a corotating twin-screw extruder, with the product A being exposed to a temperature in the range from 150 to 400° C. and residual water present and also water from the polycondensation being removed through the degassing openings, to give a product B, with the proviso that the corotating twin-screw extruder has at least two segments having different pressures.

公开(公告)号：CZ176497A3

公开(公告)日：1998-01-14

申请号：CZ176497

申请日：1995-12-01

Applicant: BASF AG

Inventor： KALCK ULRICH ,  JONES SIMON A ,  BASSLER PETER ,  PRIESTER CLAUS ULRICH ,  KOPIETZ MICHAEL

IPC: C07D201/12

Abstract: Caprolactam is obtained from mixtures which contain polymers or thermoplastic molding materials having the repeating unit -N(H)-(CH2)5-C(O)- (a) by cleavage at elevated temperatures in the presence of a base under reduced pressure or (b) in the presence of water, by using a mixture essentially comprising from 50 to 99.9% by weight of a polymer or of a thermoplastic molding material having the repeating unit -N(H)-(CH2)5-C(O)- from 0.1 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes, from 0 to 10% by weight of organic and/or inorganic additives, from 0 to 40% by weight of non-polyamide-containing polymers and from 0 to 20% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam, and carrying out the cleavage in the presence of a base under reduced pressure, the water content of the mixture used being not more than 0.01% by weight, or carrying out the cleavage in the presence of water without the addition of acid or base at from 270 DEG to 350 DEG C. and a weight ratio of water to polymer or thermoplastic molding material of from 1:1 to 20:1 and in a reaction time of less than 3 hours.

公开(公告)号：BR9509987A

公开(公告)日：1997-12-30

申请号：BR9509987

申请日：1995-12-01

Applicant: BASF AG

Inventor： KOPIETZ MICHAEL ,  HANDERMAN ALAN ,  JONES SIMON A ,  KALCK ULRICH ,  PRIESTER CLAUS-ULRICH ,  AUER HEINZ ,  RITZ JOSEF ,  FUCHS HUGO ,  PIJL PAUL

IPC: B01J8/10 ,  C07D201/12 ,  C08G69/14 ,  C08J11/16

Abstract: Caprolactam is obtained from caprolactam-containing polymers in the presence of a base under reduced pressure by depolymerizing polymers which contain the repeating unit -[-N(H)-(CH2)5-C(O)-] or mixtures consisting essentially of from 50 to 99.99% by weight of a polymer containing the repeating unit -[-N(H)-(CH2)5-C(O)-]- from 0.01 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes, from 0 to 10% by weight of organic and/or inorganic additives, from 0 to 40% by weight of non-polyamide-containing polymers and from 0 to 20% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam, in at least two depolymerization reactors connected in series.

公开(公告)号：CA2646703A1

公开(公告)日：2007-09-27

申请号：CA2646703

申请日：2007-03-21

Applicant: BASF AG

Inventor： BRUCKMANN THEODOR ,  KOPIETZ MICHAEL ,  SEIBRING JOACHIM ,  BECKER JENS

IPC: B29B9/06 ,  B29C44/34 ,  B29C48/345

Abstract: The procedure for granulating polymer melts (21) in a granulation chamber (20) to manufacture polyamide, comprises flooding the granulating chamber with a nitrogen/air in relation to the polymer melt, injecting the polymer melt into the granulating chamber and expelling the nitrogen/air from the granulating chamber by a liquid once the polymer melt starts to flow through the cutting device. After expelling the nitrogen/air, a further polymer melt is injected into the chamber. In the granulation chamber, a cutting device is accommodated at a pressure above the ambient pressure. The procedure for granulating polymer melts (21) in a granulation chamber (20) to manufacture polyamide, comprises flooding the granulating chamber with a nitrogen/air in relation to the polymer melt, injecting the polymer melt into the granulating chamber and expelling the nitrogen/air from the granulating chamber by a liquid once the polymer melt starts to flow through the cutting device. After expelling the nitrogen/air, a further polymer melt is injected into the chamber. In the granulation chamber, a cutting device is accommodated at a pressure above the ambient pressure. The nitrogen/air shows a pressure, with which the granulation is carried out. The polymer melt in the cutting device is cut into pellets. The granulated pellets with the liquid are discharged from the granulation chamber and subsequently separated from the liquid. The pressure in the granulation chamber is 2-15 bar. An independent claim is included for a device for granulating polymer melts in the granulation chamber.

公开(公告)号：BG63200B1

公开(公告)日：2001-06-29

申请号：BG10157297

申请日：1997-06-05

Applicant: BASF AG

Inventor： KALCK ULRICH ,  JONES SIMON A ,  BASSLER PETER ,  PRIESTER CLAUS U ,  KOPIETZ MICHAEL

IPC: C07D201/12

Abstract: Caprolactam is produced from mixtures containing polymers or thermoplastic moulded materials with a repeating structural unit -[N(H)-(CH2)5-C(O)-]-, by depolymerization at elevated temperatures in the presence of water. The mixture used includes, in wt. %: from 50 to 99.9 polymer or thermoplastic moulded materials containing a repeating structural unit -[-N(H)-(CH2)5-C(O)-]-, from 0.1 to 50 additives as inorganic fillers, organic and inorganic pigments and dyestuffs, from 0 to 10 organic and/or inorganic additives, from 0 to 40 non-polyamide-containing polymers and from 0 to 20 polyamides, with the exception of polycaprolactam and co-polymers, produced from caprolactam. The depolymerization is effected in the presence of water without any addition of an acid or a base at temperatures ranging from 270 to 350 degrees C and weight ratio between water and polymer or the thermoplastic moulded material from 1:1 to 20:1, for a time less than 3 hours. 1 claim

公开(公告)号：DE59505461D1

公开(公告)日：1999-04-29

申请号：DE59505461

申请日：1995-12-01

Applicant: BASF AG

Inventor： BASSLER PETER ,  KOPIETZ MICHAEL

IPC: B03B9/06 ,  C07D201/12 ,  C08J11/14

Abstract: Caprolactam is obtained from caprolactam-containing polymers in the presence of superheated water by bringing polymers which contain the repeating unit -[-N(H)-(CH2)5-C(O)-]- or mixtures consisting essentially of -from 40 to 99.9% by weight of a polymer containing the repeat- - ing unit -[-N(H)-(CH2)5-C(O)-]-, -from 0.01 to 50% by weight of additives selected from the group - consisting of inorganic fillers, organic and - inorganic pigments and dyes, -from 0 to 10% by weight of organic and/or inorganic - additives, -from 0 to 40% by weight of non-polyamide-containing - polymers and -from 0 to 60% by weight of polyamides, with the exception of - polycaprolactam and copolyamides prepared - from caprolactam, - into contact with superheated water at from 280 DEG to 320 DEG C. and from 7.5 to 15 MPa and a weight ratio of water to polymer containing the repeating unit -[-N(H)-(CH2)5-C(O)-]- of from 5:1 to 13:1 and in a reaction time of less than 3 hours, with the proviso that the reaction mixture, consisting essentially of water and the polymer used or the mixture used, contains no gaseous phase under the conditions of the hydrolysis.

公开(公告)号：BG101573A

公开(公告)日：1998-01-30

申请号：BG10157397

申请日：1997-06-05

Applicant: BASF AG

Inventor： BASSLER PETER ,  KOPIETZ MICHAEL

IPC: B03B9/06 ,  C07D201/12 ,  C08J11/14

Abstract: Disclosed is a method of obtaining caplolactam from polymerscontaining caplolactam in the presence of superheated water. Theproposed method is based on the use of polymers containing therepeating unit -[-N(H)-(CH2)5-C(O)-]- or mixtures consistingessentially of: 40-99.99 wt.% of a polymer containing therepeating unit -[-N(H)-(CH2)5-C(O)-]; 0.01-50 wt.% of additivesselected from the group consisting of inorganic fillers, organicand inorganic pigments and dyes; 0-10 wt.% of organic and/orinorganic additives; 0-40 wt.% of polymers which do not containpolyamide; 0-60 wt.% of polyamides with the exception ofpolycaprolactam and copolyamides based on caprolactam. Thesepolymers or mixtures are brought into contact with superheatedwater at a temperature of 280-320 0C and at a pressure of 7.5-15Mpa, the weight of water to the polymer containing the repeatingunit -[-N(H)-(CH2)5-C(O)-]- being between 5:1 and 13:1 and thereaction time less than 3 hours. The reaction mixture consistingessentially of water and the polymers or mixture indicated aboveshould contain no gaseous phase under the conditions ofhydrolysis.

公开(公告)号：PL320593A1

公开(公告)日：1997-10-13

申请号：PL32059395

申请日：1995-12-01

Applicant: BASF AG

Inventor： BASSLER PETER ,  KOPIETZ MICHAEL

IPC: B03B9/06 ,  C07D201/12 ,  C08J11/14

Abstract: Caprolactam is obtained from caprolactam-containing polymers in the presence of superheated water by bringing polymers which contain the repeating unit -[-N(H)-(CH2)5-C(O)-]- or mixtures consisting essentially of -from 40 to 99.9% by weight of a polymer containing the repeat- - ing unit -[-N(H)-(CH2)5-C(O)-]-, -from 0.01 to 50% by weight of additives selected from the group - consisting of inorganic fillers, organic and - inorganic pigments and dyes, -from 0 to 10% by weight of organic and/or inorganic - additives, -from 0 to 40% by weight of non-polyamide-containing - polymers and -from 0 to 60% by weight of polyamides, with the exception of - polycaprolactam and copolyamides prepared - from caprolactam, - into contact with superheated water at from 280 DEG to 320 DEG C. and from 7.5 to 15 MPa and a weight ratio of water to polymer containing the repeating unit -[-N(H)-(CH2)5-C(O)-]- of from 5:1 to 13:1 and in a reaction time of less than 3 hours, with the proviso that the reaction mixture, consisting essentially of water and the polymer used or the mixture used, contains no gaseous phase under the conditions of the hydrolysis.