公开(公告)号：DE19738861A1

公开(公告)日：1999-03-11

申请号：DE19738861

申请日：1997-09-05

Applicant: BASF AG

Inventor： GUTSCHE HERBERT ,  ANDERLIK RAINER DR ,  KRES NORBERT ,  GRES DIETER ,  BRIAN BERND ,  BAIERWECK PETRA DR ,  MOSNER HERBERT ,  BRANDT HERMANN DR ,  HEEL HELMUT DR

IPC: B29C47/10 ,  C08J3/20 ,  B29B7/14 ,  B29C47/36

Abstract: The invention relates to a continuous method for producing dyed thermoplastic moulding materials in an extruder, as follows: I) in a first area, A) 10 to 99.999 wt. % of a thermoplastic polymer is metered into an extruder. II) In a subsequent area, B) 0.001 to 60 wt. % of a dye is added at a temperature below the particular glass transition temperature of the thermoplastic A). In the subsequent areas, the thermoplastic/dye mixture is heated, the polymer melt is homogenised and the resulting mixture is extruded.