公开(公告)号：US20170362776A1

公开(公告)日：2017-12-21

申请号：US15536552

申请日：2015-12-04

申请人： BASF SE

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

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

CPC分类号： 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

摘要： 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.

公开(公告)号：US20170183821A1

公开(公告)日：2017-06-29

申请号：US15129986

申请日：2015-03-10

申请人： BASF SE

发明人： Matthew BUCHAN ,  Reinhard HAFFKE ,  Leonardus Guido Antonius RENSEN ,  Christoph HAMERS ,  Norbert SCHALL

IPC分类号： D21H17/28 ,  D21H17/45 ,  B65D5/56 ,  D21H19/54 ,  D21H21/18 ,  D21H17/37 ,  D21H17/42 ,  D21H17/56

CPC分类号： D21H17/28 ,  B32B3/28 ,  B32B29/06 ,  B32B29/08 ,  B32B2260/028 ,  B32B2260/046 ,  B32B2307/734 ,  B32B2439/62 ,  B65D5/563 ,  D21H17/37 ,  D21H17/375 ,  D21H17/42 ,  D21H17/44 ,  D21H17/45 ,  D21H17/56 ,  D21H19/54 ,  D21H21/18 ,  D21H23/22 ,  D21H23/76 ,  D21H27/40

摘要： The present invention relates to a process for producing corrugated fiberboard from plies of paper which each have a grammage of 70 to 200 g/m2 and of which at least one ply of paper is obtained by a process comprising the addition of (A) 0.25 to 5 wt %, based on dry paper stock, of at least one cationic polymer comprising vinylamine units, and (B) 0 to 5 wt %, based on dry paper stock, of at least one polymeric anionic compound, to a paper stock, draining the paper stock by sheet formation, coating the paper web obtained with (C) 0.1 to 3 wt %, based on dry paper stock, of at least one starch and drying the coated paper web,wherein the polymeric anionic compound is selected from a polymeric anionic compound (B1) and a polymeric anionic compound (B2),wherein said polymeric anionic compound (B1) is obtainable by copolymerizing a monomer mixture comprising, preferably consisting of, (a) at least one monomer (a) selected from acrylamide and an N-vinylcarboxamide of the formula where R1 and R2 are each H or C1 to C6 alkyl, (b) at least one acid-functional monoethylenically unsaturated monomer and/or its alkali metal, alkaline earth metal or ammonium salts (b), and (c) optionally one or more monoethylenically unsaturated compounds (c) other than said monomers (a) and (b), and (d) optionally one or more compounds having at least two ethylenically unsaturated double bonds in the molecule, and said polymeric anionic compound (B2) is the hydrolysis product of said polymeric anionic compound (B1) whose carboxamide moieties have been partly or wholly hydrolyzed into amino groups,and also the corrugated fiberboard thus obtained and its use in the manufacture of packaging boxes from corrugated fiberboard.