公开(公告)号：DE59610369D1

公开(公告)日：2003-05-28

申请号：DE59610369

申请日：1996-10-17

Applicant: BASF AG

Inventor： PAKUSCH DR ,  DIEING DR ,  TROPSCH DR

IPC: C08L33/14 ,  C08F6/00 ,  C08F6/14 ,  C08J3/16 ,  C08L33/04 ,  C08L33/24 ,  C09D5/00 ,  C09D5/02 ,  C09J11/08 ,  C09J201/00

Abstract: The production of polymer powder comprises drying an aqueous dispersion of a polymer (A) in which the dispersed particles have a positive or negative electric charge on the surface. The process comprises adding, as auxiliary drying agent, a polyelectrolyte (B) which, in its dissociated form as poly-ion and counter-ion is soluble in the aqueous dispersion medium and in which the charge on the poly-ion is opposite to the surface charge on the dispersed polymer. Also claimed are: (i) the polymer powder obtained by this process; and (ii) the polymer powder containing charged spherical particles of (A) and a polyelectrolyte (B).

公开(公告)号：DE59812261D1

公开(公告)日：2005-01-20

申请号：DE59812261

申请日：1998-07-08

Applicant: BASF AG

Inventor： DIEING DR ,  HOESSEL DR ,  KOTHRADE DR ,  SANNER DR ,  ZEITZ DR ,  RAUBENHEIMER HANS-JUERGEN ,  SCHEHLMANN DR

IPC: A61K8/00 ,  A61K8/49 ,  A61K8/81 ,  A61Q5/00 ,  A61Q5/02 ,  A61Q5/12 ,  A61K7/06