公开(公告)号：US3704863A

公开(公告)日：1972-12-05

申请号：US3704863D

申请日：1970-04-09

Applicant: AKZONA INC

Inventor： MEYER ERNST ,  GRIMM WOLFGANG ,  GERLACH KLAUS ,  LINHART HELMUT

IPC: C08L77/00 ,  B01F3/10 ,  B01F7/00 ,  B29B7/40 ,  B29B7/94 ,  B29B13/02 ,  C08G69/46 ,  C08J3/20 ,  C08J3/205 ,  D01D1/06 ,  B01F7/16

CPC classification number: C08J3/2056 ,  B01F7/00908 ,  B01F2003/105 ,  B29B7/40 ,  B29B7/94 ,  B29B13/022 ,  B29K2105/0032 ,  C08J3/201 ,  C08J2377/00 ,  D01D1/065

Abstract: Process and apparatus for the uniform mixing of a polyamide melt with a pigment dispersed in a liquid medium soluble in the polyamide wherein the melt is divided, immediately after introduction of the liquid pigment dispersion as a thin liquid stream, into planar segments or displaced layers having a maximum thickness of about 1,500 microns, preferably 20 to 850 microns, using a paddle wheel stirring mechanism at the inlet end of an elongated mixing vessel tapering radially inwardly down to its outlet or discharge end. This invention generally relates to a process for continuously mixing a pigment dispersion into a high molecular weight organic polymer which is in the molten state, for example nylon 6 (polycaprolactam), nylon 6,6 (polyhexamethylene adipamide) or other polyamides, particularly at the conclusion of a continuous polymerization or polycondensation process.