公开(公告)号：DE2728931A1

公开(公告)日：1979-01-04

申请号：DE2728931

申请日：1977-06-27

Applicant: BASF AG

Inventor： ECKELL ALBRECHT DIPL CHEM DR ,  MATTHIES PAUL ,  PILZ GEORG ING GRAD ,  ROTZOLL RUDI-HEINZ DIPL CHEM D

IPC: C08G69/00 ,  C08G69/28 ,  C08G69/26

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：DE2948913A1

公开(公告)日：1981-06-11

申请号：DE2948913

申请日：1979-12-05

Applicant: BASF AG

Inventor： ROTZOLL RUDI-HEINZ DIPL CHEM D ,  DUFFNER PAUL DIPL CHEM DR ,  PILZ GEORG ING GRAD ,  THIEL GERHARD ING GRAD

IPC: B65D33/01 ,  B65D65/38 ,  B65D85/00

公开(公告)号：DE2918828A1

公开(公告)日：1980-11-20

申请号：DE2918828

申请日：1979-05-10

Applicant: BASF AG

Inventor： MATTHIES PAUL ,  VALENTIN GUENTER ING GRAD ,  HOERAUF WERNER DIPL CHEM DR ,  ROTZOLL RUDI-HEINZ DIPL CHEM D

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：DE2728817A1

公开(公告)日：1979-01-04

申请号：DE2728817

申请日：1977-06-27

Applicant: BASF AG

Inventor： ECKELL ALBRECHT DIPL CHEM DR ,  MATTHIES PAUL DR ,  PILZ GEORG ING GRAD ,  ROTZOLL RUDI-HEINZ DIPL CHEM D

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.