公开(公告)号：US20170233950A1

公开(公告)日：2017-08-17

申请号：US15518514

申请日：2015-08-14

Applicant: BASF SE

Inventor： Hans-Joachim HAEHNLE ,  Christoph HAMERS ,  Anton ESSER ,  Stefan SPANGE ,  Katja TROMMLER ,  Hendryk WUERFEL ,  Susan SEIFERT ,  Tina WALTHER

IPC: D21H21/20 ,  D21H17/34 ,  C08F18/08 ,  C08F20/56 ,  C08K5/07 ,  C08F26/02

CPC classification number: D21H21/20 ,  C08F18/08 ,  C08F20/56 ,  C08F26/02 ,  C08K5/07 ,  D21H17/09 ,  D21H17/10 ,  D21H17/34 ,  D21H17/37 ,  D21H17/55 ,  D21H17/56 ,  D21H23/04

Abstract: The invention relates to an aqueous composition comprising (a) polymers having primary amino groups and/or amidine groups to a combined content for these groups of ≧1.5 meq/g of polymer, and (b) 0.01 to 50 mol % of 1,4-cyclohexanedione (b) based on the combined amount of primary amino groups and amidine groups of the polymers, wherein the pH of the aqueous composition is ≦6, and further to its use as strength enhancer and to a method of producing paper and board, employment of the aqueous composition and also the paper and board thus obtained.

公开(公告)号：US20170362776A1

公开(公告)日：2017-12-21

申请号：US15536552

申请日：2015-12-04

Applicant: BASF SE

Inventor： Hans-Joachim HAEHNLE ,  Christoph HAMERS ,  Anton ESSER ,  Hubert MEIXNER ,  Matthew BUCHAN ,  Norbert SCHALL ,  Stefan SPANGE ,  Katja TROMMLER ,  Hendryk WUERFEL ,  Susan SEIFERT ,  Tina WALTHER

IPC: D21H17/42 ,  D21H17/63 ,  D21H17/37 ,  B01F3/12 ,  D21H15/10 ,  B01F3/22 ,  D21H25/04 ,  D21H17/35 ,  D21H11/08 ,  D21H11/04

CPC classification number: D21H17/42 ,  B01F3/1214 ,  B01F3/223 ,  B01F2215/0078 ,  C08L2201/54 ,  C09D139/02 ,  D21H11/04 ,  D21H11/08 ,  D21H15/10 ,  D21H17/34 ,  D21H17/35 ,  D21H17/37 ,  D21H17/375 ,  D21H17/41 ,  D21H17/44 ,  D21H17/63 ,  D21H21/10 ,  D21H23/04 ,  D21H25/04

Abstract: A process for producing paper or board, which process comprises ad-mixing (I) an aqueous composition of pH ≦6 and (II) at least one water-soluble polymeric anionic compound to a paper stock having a pH in the range from 6 to 8 and then dewatering the paper stock by sheet formation and drying, wherein the aqueous composition comprises (a) polymers having primary amino groups and/or amidine groups to a combined content for these groups of ≧1.5 meq/g of polymer, and (b) 0.01 to 50 mol % of 1,4-cyclohexanedione (b) based on the combined amount of primary amino groups and/or amidine groups of the polymers, and also to the paper or board thus obtained.