公开(公告)号：PT1432308E

公开(公告)日：2007-12-27

申请号：PT02800095

申请日：2002-09-19

Applicant: BASF AG

Inventor： SCHNEIDER KARL-HEINRICH ,  KESSLER THOMAS ,  DIEING REINHOLD ,  DIETSCHE FRANK ,  GOMEZ MARCOS ,  SCHILLO SIMONE ,  HEILMANN KARL-OTTO

IPC: A01N25/10 ,  A01N25/12 ,  A01N43/90 ,  A01N37/24 ,  A01N37/50 ,  A01N43/28 ,  A01N43/36 ,  A01N43/40 ,  A01N43/54 ,  A01N43/56 ,  A01N43/78 ,  A01N47/22 ,  A01N47/24 ,  A01N47/32 ,  A01N47/38 ,  A01N47/40 ,  A01N47/42 ,  A01N47/44 ,  A01N51/00 ,  A01N57/14

公开(公告)号：CA2599633A1

公开(公告)日：2006-09-21

申请号：CA2599633

申请日：2006-03-14

Applicant: BASF AG

Inventor： MUELLER FRANK ,  MATHAUER KLEMENS ,  KERBER MICHAEL ,  PETSCH TOBIAS ,  SCHILLO SIMONE ,  PIEROBON MARIANNA

IPC: B29C47/00 ,  B01J20/26 ,  B01J20/30

Abstract: Process for production of polymer blends which are suitable as filter aids and are composed of polystyrene and of crosslinked water-insoluble polyvinylpyrrolidones via processing of the two components in an extruder, which comprises melting polystyrene in an extruder and then treating it with the polyvinylpyrrolidone, and adding, to the mixture of the components, from 0.1 to 10% by weight of water, based on the total amount of polystyrene and popcorn polymer, and extruding and comminuting the mixture.