公开(公告)号：US3925301A

公开(公告)日：1975-12-09

申请号：US48382374

申请日：1974-06-27

Applicant: DEGUSSA

Inventor： ENGEL CLAUS RICHARD ,  LINKE HEINZ ,  ROTHBUHR LOTHAR ,  SROKA WERNER ,  VOGT JES ,  WESTLINNING HERMANN

IPC: B29B13/00 ,  B29B7/00 ,  B29B7/60 ,  B29B7/72 ,  B29B9/00 ,  B29C47/00 ,  B29C47/10 ,  B29C47/38 ,  C08K3/04

CPC classification number: C08J3/201 ,  B29C47/0004 ,  B29C47/0014 ,  B29C47/0016 ,  B29C47/0023 ,  B29K2105/0005 ,  C08J2323/02

Abstract: Highly concentrated carbon black-thermoplastic synthetic resin concentrates are prepared by adding the carbon black to the synthetic resin in at least two places in series employing a conveying apparatus which is a continuously operating screw kneader.