公开(公告)号：NO910283L

公开(公告)日：1991-07-26

申请号：NO910283

申请日：1991-01-24

Applicant: BASF AG

Inventor： FREUDENBERG ENRIQUE ,  LINHART FRIEDRICH ,  TRESCH RAINER ,  HARTMANN HEINRICH ,  DENZINGER WALTER ,  KROENER MICHAEL ,  SENDHOFF NORBERT

IPC: D21H21/04 ,  D21H17/34 ,  D21H17/37 ,  D21H17/41 ,  D21H21/10 ,  D21H27/00

Abstract: In a process for making paper, paperboard and cardboard, paper pulps containing interfering materials are dehydrated in the presence of polymers which, as characteristic constituents, contain copolymerised units of the formulae … … with R and R = H or C1- to C3-alkyl, and have K values of at least 130, the polymers containing less than 10 mol% of units of formula II.

公开(公告)号：FI910206A

公开(公告)日：1991-07-17

申请号：FI910206

申请日：1991-01-15

Applicant: BASF AG

Inventor： AUHORN WERNER ,  LINHART FRIEDRICH ,  LORENCAK PRIMOZ ,  KROENER MICHAEL ,  SENDHOFF NORBERT ,  DENZINGER WALTER ,  HARTMANN HEINRICH

IPC: C08F8/12 ,  D21H17/34 ,  D21H17/36 ,  D21H