公开(公告)号：CA2706214A1

公开(公告)日：2009-05-28

申请号：CA2706214

申请日：2008-11-20

Applicant: BASF SE

Inventor： GUENTHERBERG NORBERT ,  FARWERCK KARL-PETER ,  KURPS ARMIN ,  BARRERA-MEDRANO DANIEL ,  UERDINGEN ERIC ,  STEGMANN VEIT ,  LUTZ MICHAEL

IPC: C08J3/09 ,  C08J3/12

Abstract: The invention relates to a method for producing spherical particles from at least one material, said method comprising the following steps: (A) a solution or a dispersion of the at least one material is produced in at least one solvent or dispersant that can be mixed with water, (B) the solution or dispersion obtained in step (A) is transformed into individual portions containing a quantity of the at least one material corresponding to the quantity present in the spherical particles, by means of underwater granulation, and (C) the portions obtained in step (B) are introduced into a medium that can be mixed with the solvent or dispersant from step (A) and in which the material used in step A is insoluble, such that the solvent or dispersant used in step (A) is replaced by the medium that can be mixed with the solvent or dispersant from step (A), and the material is hardened to form the spherical particles.