公开(公告)号：US3654218A

公开(公告)日：1972-04-04

申请号：US3654218D

申请日：1969-08-22

Applicant: DEGUSSA

Inventor： CLAS WILLI ,  BUCHEL WOLFGANG

IPC: C08J3/215 ,  C08L21/00 ,  C08C11/00 ,  C08C11/18

CPC classification number: C08J3/215 ,  C08J2321/00 ,  C08L21/00 ,  C08L2666/02

Abstract: A RUBBER LATEX IS COAGULATED IN THE PRESENCE OF AN AQUEOUS DISPERSION OF FINELY DIVIDED CARBON BLACK, THE DISPERSION BEING FORMED AT A PH OF 1 TO 2. THE COAGULATE MAY THEN BE SUBJECTED TO WASHING, FILTERING AND DRYING AND THE THUS-FORMED GRANULATE MAY SUBSEQUENTLY BE SUBJECTED TO A GRINDING STEP. THE GRANULATE HAS SUBSTANTIALLY NO TENDENCY TO CAKE WITHOUT THE NECESSITY OF ADDING ADDITIONAL SEPARATING AGENTS.