公开(公告)号：PT883712E

公开(公告)日：2001-12-28

申请号：PT97903333

申请日：1997-02-20

Applicant: BASF AG

Inventor： RUBENACKER MARTIN ,  NILZ CLAUDIA ,  MANFRED NIESSNER DR ,  SCHUHMACHER RUDOLF ,  UTECHT JENS

IPC: C08F8/12 ,  C08F26/02 ,  D21H17/34 ,  D21H17/37 ,  D21H17/45 ,  D21H21/18

Abstract: PCT No. PCT/EP97/00801 Sec. 371 Date Aug. 31, 1998 Sec. 102(e) Date Aug. 31, 1998 PCT Filed Feb. 20, 1997 PCT Pub. No. WO97/31518 PCT Pub. Date Sep. 4, 1997Partially hydrolyzed polymers of N-vinylcarboxamides obtainable by sole polymerization of N-vinylcarboxamides of the formula where R1 and R2 are each hydrogen or C1- to C6-alkyl, and elimination from the polymers of from 0.5 to 95 mol % of the groups of the formula where R1 is hydrogen or C1- to C6-alkyl, can be used as paper, paperboard and cardboard dry strength enhancers.

公开(公告)号：PT897395E

公开(公告)日：2001-11-30

申请号：PT97922941

申请日：1997-05-02

Applicant: BASF AG

Inventor： RUBENACKER MARTIN ,  MANFRED NIESSNER DR ,  MONCH DIETMAR ,  UTECHT JENS

IPC: B01D21/01 ,  C02F1/56 ,  C08F8/00 ,  D21C9/18 ,  D21H17/46 ,  D21H21/10

Abstract: PCT No. PCT/EP97/02251 Sec. 371 Date Jul. 1, 1998 Sec. 102(e) Date Jul. 1, 1998 PCT Filed May 2, 1997 PCT Pub. No. WO97/42229 PCT Pub. Date Nov. 13, 1997Polymers containing beta -hydroxyalkylvinylamine units, which are obtainable by reacting polymers containing vinylamine units with epoxides of the formula where R=C2-C28-alkyl, phenyl, C1-C18-alkylphenyl or C2-C18-alkenyl, are described, as are a process for preparing the polymers and use of the polymers as retention and drainage aids and flocculants and as fixatives in paper making, as protective colloid for producing alkyldiketene dispersions or alkenylsuccinic anhydride dispersions, as emulsifier for producing aqueous filler suspensions and as corrosion inhibitor.