公开(公告)号：BR9608052A

公开(公告)日：1999-02-17

申请号：BR9608052

申请日：1996-03-28

Applicant: BASF AG

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

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：ES2125106T3

公开(公告)日：1999-02-16

申请号：ES96909142

申请日：1996-03-28

Applicant: BASF AG

Inventor： GOTZ WALTER ,  HOFMANN JURGEN ,  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：AT174361T

公开(公告)日：1998-12-15

申请号：AT96909142

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：BR9510085A

公开(公告)日：1998-07-14

申请号：BR9510085

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：CZ9701764A3

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

CPC classification number: C07D201/12

公开(公告)号：BR9509991A

公开(公告)日：1997-12-30

申请号：BR9509991

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：CA2208222A1

公开(公告)日：1996-06-20

申请号：CA2208222

申请日：1995-12-01

Applicant: BASF AG

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

IPC: C07D201/12 ,  C07D223/10

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 depolymerization 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 aditives; 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 depolymerization 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 depolymerization in the presence of water without the addition of acid or base at from 270 to 350 ~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：PL189334B1

公开(公告)日：2005-07-29

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.

公开(公告)号：SK282229B6

公开(公告)日：2001-12-03

申请号：SK66897

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：BG62929B1

公开(公告)日：2000-11-30

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 polymers containing caplolactam in the presence of superheated water. The proposed method is based on the use of polymers containing the repeating unit -[-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 deg.C and at a pressure of 7.5-15 Mpa, the weight 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. 6 claims, 1 figure