公开(公告)号：DE2860225D1

公开(公告)日：1980-12-04

申请号：DE2860225

申请日：1978-06-14

Applicant: BASF AG

Inventor： ECKELL ALBRECHT DR ,  MATTHIES PAUL DR ,  PILZ GEORG ,  ROTZOLL RUDI-HEINZ DR

IPC: C08G69/00 ,  C08G69/28

Abstract: A process for the manufacture of nylons by heating an aqueous solution of a salt of an alkanedicarboxylic acid of 6 to 12 carbon atoms and a diamine of the formula NH2RNH2, where R is alkylene of 6 to 12 carbon atoms or is a radical to a temperature at which a nylon is formed, under superatmospheric pressure and with removal of water. The solution used is an aqueous solution of from 75 to 90 percent strength by weight of a salt of a dicarboxylic acid and a diamine, which solution has been obtained by neutralizing a less concentrated salt solution, which contains an appropriate dissolved excess of the particular dicarboxylic acid, with the corresponding diamine. The nylons obtained are used for the manufacture of moldings.

公开(公告)号：DE2861152D1

公开(公告)日：1981-12-24

申请号：DE2861152

申请日：1978-06-16

Applicant: BASF AG

Inventor： ROTZOLL RUDI-HEINZ DR ,  DUFFNER PAUL DR ,  DIETL ERNST DR ,  PILZ GEORG ,  THIEL GERHARD

IPC: C07C55/02 ,  C07C51/00 ,  C07C51/41 ,  C07C55/14 ,  C07C67/00 ,  C07C209/00 ,  C07C211/09

Abstract: A process for the continuous preparation of an aqueous solution of a salt of an alkanedicarboxylic acid of 6 to 12 carbon atoms and an alkanediamine of 6 to 12 carbon atoms by reacting the particular alkanedicarboxylic acid with the particular alkanediamine in an aqueous solution of the salt to be prepared. The aqueous salt solution is recycled from a first mixing zone via a transport zone and a second mixing zone into the first mixing zone, liquid alkanediamine and an aqueous solution of alkanedicarboxylic acid are introduced between the first and second mixing zones. Less than the equivalent amount of alkanediamine is introduced, the remaining amount of liquid alkanediamine is added after the second mixing zone, and aqueous salt solution is taken off the first mixing zone at the rate at which it is formed. The salt prepared is used for the manufacture of a nylon.

公开(公告)号：DE3065809D1

公开(公告)日：1984-01-12

申请号：DE3065809

申请日：1980-05-02

Applicant: BASF AG

Inventor： ROTZOLL RUDI-HEINZ DR ,  MATTHIES PAUL DR ,  VALENTIN GUENTER ,  HOERAUF WERNER DR

IPC: C08G69/00 ,  B01J19/18 ,  C08G69/04 ,  C08G69/16

Abstract: A process for the continuous preparation of polycaprolactam, which comprises polymerizing epsilon -caprolactam in a vertical tubular reactor through which the epsilon -caprolactam flows downward, wherein the epsilon -caprolactam is partially polymerized, at a nylon-forming temperature, in a mechanically mixed zone, the reaction mixture is circulated through a heat exchange zone in the lower part of the mechanically mixed reaction zone, and is polymerized further, in additional heat exchange zones, until the desired degree of polymerization is reached, and poly- epsilon -caprolactam is then discharged as a melt, and an apparatus for carrying out the process.

公开(公告)号：DE2728818A1

公开(公告)日：1979-01-04

申请号：DE2728818

申请日：1977-06-27

Applicant: BASF AG

Inventor： ROTZOLL RUDI-HEINZ DR ,  DUFFNER PAUL DR ,  DIETL ERNST DR ,  PILZ GEORG ,  THIEL GERHARD

IPC: C07C55/02 ,  C07C51/00 ,  C07C51/41 ,  C07C55/14 ,  C07C67/00 ,  C07C209/00 ,  C07C211/09 ,  C07C87/14 ,  C07C51/52

Abstract: A process for the continuous preparation of an aqueous solution of a salt of an alkanedicarboxylic acid of 6 to 12 carbon atoms and an alkanediamine of 6 to 12 carbon atoms by reacting the particular alkanedicarboxylic acid with the particular alkanediamine in an aqueous solution of the salt to be prepared. The aqueous salt solution is recycled from a first mixing zone via a transport zone and a second mixing zone into the first mixing zone, liquid alkanediamine and an aqueous solution of alkanedicarboxylic acid are introduced between the first and second mixing zones. Less than the equivalent amount of alkanediamine is introduced, the remaining amount of liquid alkanediamine is added after the second mixing zone, and aqueous salt solution is taken off the first mixing zone at the rate at which it is formed. The salt prepared is used for the manufacture of a nylon.

公开(公告)号：DE2860572D1

公开(公告)日：1981-04-23

申请号：DE2860572

申请日：1978-06-16

Applicant: BASF AG

Inventor： ECKELL ALBRECHT DR ,  MATTHIES PAUL DR ,  PILZ GEORG ,  ROTZOLL RUDI-HEINZ DR

IPC: C07C55/02 ,  C07C51/00 ,  C07C51/41 ,  C07C55/14 ,  C07C67/00 ,  C07C209/00 ,  C07C211/09 ,  C07C211/36 ,  C07C231/00 ,  C07C231/02 ,  C07C231/24 ,  C07C233/36 ,  C07C233/41 ,  C08G69/28

Abstract: A process for the manufacture of a highly concentrated aqueous solution of a salt of a dicarboxylic acid and a diamine, as well as of a nylon precondensate, by reacting an alkanedicarboxylic acid of 6 to 12 carbon atoms and a diamine of the formula NH2RNH2, where R is alkylene of 6 to 12 carbon atoms or is An aqueous solution, of lower concentration, of a salt of a dicarboxylic acid and a diamine, containing an appropriate dissolved excess of the particular dicarboxylic acid, is reacted with the particular diamine in the molten state, in an equivalent amount to the dissolved dicarboxylic acid, the reaction being carried out under superatmospheric pressure and the final reaction temperature being kept at from 140 DEG to 210 DEG C. The solution obtained is used for the manufacture of a nylon.

公开(公告)号：CH384111A

公开(公告)日：1964-11-15

申请号：CH8032159

申请日：1959-11-06

Applicant: BASF AG

Inventor： DEHNERT JOHANNES DR ,  ROTZOLL RUDI-HEINZ DR

IPC: C09B45/14 ,  C09B45/48