公开(公告)号：FR80038E

公开(公告)日：1963-03-01

申请号：FR866305

申请日：1961-06-28

Applicant: BASF AG

Inventor： NIESWANDT WERNER ,  POMMER HORST ,  STILZ WALTER ,  STAHL HELMUT

IPC: C08K3/32

公开(公告)号：CA1012679A

公开(公告)日：1977-06-21

申请号：CA179854

申请日：1973-08-28

Applicant: BASF AG

Inventor： NIESWANDT WERNER ,  HOERAUF WERNER ,  GUENTHER ERNST ,  KISSEL ERNST ,  NEUMANN ECKART ,  VALENTIN GUENTHER

IPC: C08G69/00 ,  B01D11/02 ,  C07D201/12 ,  C08G69/46

Abstract: Continuous extraction of polylactam granules for the removal of monomers and/or oligomers therefrom by means of hot water flowing countercurrently in an extraction zone, which extraction zone is divided into subzones by at least one heating zone and the water is accelerated, at certain time intervals, cocurrently and countercurrently to the flow of granules.

公开(公告)号：CA675377A

公开(公告)日：1963-12-03

申请号：CA675377D

Applicant: BASF AG

Inventor： NIESWANDT WERNER ,  STAHL HELMUT ,  STILZ WALTER ,  POMMER HORST

公开(公告)号：FR1338230A

公开(公告)日：1963-09-20

申请号：FR914649

申请日：1962-11-07

Applicant: BASF AG

Inventor： NIESWANDT WERNER ,  PFAFF PETER ,  STUEBER GEORG ,  BILLE HEINZ

IPC: C07D201/16