公开(公告)号：US11976421B2

公开(公告)日：2024-05-07

申请号：US17842203

申请日：2022-06-16

申请人： First Quality Tissue, LLC

发明人： James E. Sealey, II ,  Kevin P. Brennan ,  Justin S. Pence

IPC分类号： D21H11/18 ,  D21H17/11 ,  D21H17/37 ,  D21H17/42 ,  D21H17/55 ,  D21H27/00 ,  D21H27/40

CPC分类号： D21H27/007 ,  D21H11/18 ,  D21H17/11 ,  D21H17/375 ,  D21H17/42 ,  D21H17/55 ,  D21H27/40

摘要： A method of making an absorbent structure including mixing ultra-high molecular weight (“UHMW”) glyoxalated polyvinylamide adducts (“GPVM”) and/or high molecular weight (“HMW”), glyoxalated polyacrylamide and/or high cationic charge glyoxalated polyacrylamide (“GPAM”) copolymers and high molecular weight (“HMW”) anionic polyacrylamide (“APAM”) with the furnish during stock preparation of a wet laid papermaking process.

公开(公告)号：US20230122111A1

公开(公告)日：2023-04-20

申请号：US17905406

申请日：2021-03-04

申请人： Kemira Oyj

发明人： Kimmo Strengell ,  Asko KARPPI

IPC分类号： D21H17/55 ,  D21H17/37 ,  D21H17/42 ,  D21H17/44 ,  D21H23/04 ,  D21H21/20

摘要： The invention relates to a composition and method for manufacture of paper, board, tissue or the like. The composition comprises an amphoteric polymer component, which has a weight average molecular weight of at least 600 000 g/mol, preferably at least 1 000 000 g/mol, more preferably at least 2 000 000 g/mol, and at least one synthetic cationic polymer component, which is a copolymer of a polyamidoamine and has a weight average molecular weight ≤550 000 g/mol, preferably ≤500 000 g/mol, more preferably ≤400 000 g/mol and dispersity index more than 15, preferably more than 20, more preferably more than 25.

公开(公告)号：US11365517B2

公开(公告)日：2022-06-21

申请号：US16975729

申请日：2019-01-18

申请人： Kemira Oyj

发明人： Matti Hietaniemi

IPC分类号： D21H27/36 ,  D21F11/04 ,  D21H17/26 ,  D21H17/29 ,  D21H17/42 ,  D21H17/45 ,  D21H21/18 ,  D21H23/28 ,  D21H23/50 ,  D21H23/72

摘要： A method for manufacturing a multi-layered paperboard is disclosed, which includes at least two fibrous layers, in which method at least one layer of the multi-layered paperboard is treated by applying an aqueous solution of a first strength component in dissolved form including anionic strength polymer and/or amphoteric strength polymer composition on a surface of layer, and an aqueous solution of a cationic second strength component in dissolved form is added to a fibre stock from which at least one of the fibrous layers joined together is formed.

公开(公告)号：US11326306B2

公开(公告)日：2022-05-10

申请号：US16955470

申请日：2018-12-17

申请人： Stora Enso OYJ

发明人： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Katja Lyytikäinen

IPC分类号： D21H11/18 ,  B32B27/10 ,  B32B27/32 ,  D21F1/00 ,  D21H17/32 ,  D21H17/42 ,  D21H17/45 ,  D21H21/08 ,  D21H23/04

摘要： A method for the production of a fibrous product from a fibrous web, wherein the method comprises the steps of: —providing a fibrous suspension comprising a microfibrillated cellulose, wherein the content of the microfibrillated cellulose of said suspension is in the range of 60 to 99.9 weight-% based on total dry solid content, —adding an uncharged, amphoteric or weakly cationic polymer having a molecular weight of at least 50000 g/mol to said suspension, —adding an anionic polymer having a molecular weight of at least 00000 g/mol to said suspension to provide a mixture of said microfibrillated cellulose, said uncharged, amphoteric or weakly cationic polymer and said anionic polymer, 1—providing said mixture to a substrate to form a fibrous web, wherein the amount of uncharged, amphoteric or weakly cationic polymer in said mixture is in the range of 0.1 to 20 kg/metric ton based on total dry solid content and wherein the amount of anionic polymer in said mixture is in the range of 0.01 to 10 kg/metric ton based on total dry 20 solid content; and—dewatering said fibrous web to form a fibrous product.

公开(公告)号：US10787768B2

公开(公告)日：2020-09-29

申请号：US16317590

申请日：2017-09-04

申请人： Kemira Oyj

发明人： Matti Hietaniemi ,  Jaakko Ekman ,  Asko Karppi ,  Kimmo Strengell

IPC分类号： D21H17/37 ,  D21H17/45 ,  D21H17/14 ,  D21H17/42 ,  D21H21/10 ,  D21H21/36 ,  D21H23/18 ,  D21H21/18 ,  D21H17/15 ,  D21H11/04 ,  D21H11/14

摘要： A method for manufacture of paper, board or the like, comprising the step of dissolving a composition into aqueous solution, whereby an aqueous treatment solution is obtained for adding the obtained treatment solution to the pulp. The composition comprising a copolymer of acrylamide and at least one cationic monomer, the copolymer comprising cationic monomers at least 15 mol-%, calculated from total amount of monomers, and an ionic crosslinker agent comprising at least two carboxyl groups, wherein the equivalent ratio of carboxyl groups:cationic monomer is between 1:20 and 1:0.5.

公开(公告)号：US10704201B2

公开(公告)日：2020-07-07

申请号：US15773667

申请日：2016-12-30

申请人： ECOLAB USA INC.

发明人： Yulin Zhao ,  Chunhao Wang ,  Na Xu ,  Jun Li ,  Meng Zhang

IPC分类号： D21H17/26 ,  D21H21/18 ,  D21H17/45 ,  D21H17/42 ,  D21H27/10 ,  D21H17/44 ,  D21H17/47 ,  D21H17/56 ,  D21H17/37 ,  D21H17/36 ,  D21H17/43

摘要： The present disclosure relates to a dry strength agent composition, use of an amine-containing cationic polymer for enhancing the dry strength of paper, and a method for enhancing the dry strength of paper. The dry strength agent composition includes at least two components. The first component is an amine-containing cationic polymer and the second component may be one or more anionic or amphoteric polymers.

公开(公告)号：US10597824B2

公开(公告)日：2020-03-24

申请号：US16018936

申请日：2018-06-26

申请人： SOLENIS TECHNOLOGIES, L.P.

发明人： Cecil Coutinho ,  Susan M. Ehrhardt

IPC分类号： D21H21/00 ,  D21H21/16 ,  D21H21/28 ,  D21H17/00 ,  D21H19/20 ,  D21H17/66 ,  D21H17/28 ,  D21H19/34 ,  D21H17/42

摘要： A size press composition for improving properties of lignocellulosic material is provided herein. The size press composition includes an aluminum salt and an anionic styrene acrylate emulsion sizing agent. The aluminum salt and the anionic styrene acrylate emulsion sizing agent are substantially homogeneously dispersed within the size press composition based on visual observation utilizing a microscope at 10× magnification. A size press composition formed by a process is also provided herein. The process includes combining a dye and a starch to form a dye mixture. The process further includes combining the dye mixture, a styrene acrylate emulsion sizing agent, and an aluminum salt to form the size press composition. The dye, the starch, the aluminum salt, and the styrene acrylate emulsion sizing agent are substantially homogeneously dispersed within the size press composition based on visual observation utilizing a microscope at 10× magnification.

公开(公告)号：US20200080264A1

公开(公告)日：2020-03-12

申请号：US16610101

申请日：2018-06-13

申请人： Kemira Oyj

发明人： Mikko VIRTANEN ,  Kimmo STRENGELL ,  Juan CECCHINI ,  Matti HIETANIEMI

IPC分类号： D21H21/20 ,  D21H17/25 ,  D21F9/00 ,  D21F1/02 ,  D21F11/04 ,  D21H17/28 ,  D21H17/42 ,  D21H17/45 ,  D21H27/38 ,  D21H11/14

摘要： A method is disclosed for increasing strength properties, preferably burst strength and SCT strength, of a paper or board product. The paper or board product is manufactured from a fibrous web produced by a multilayer headbox, where an aqueous layer is formed between at least a first and a second fibre layer formed from fibrous stock suspension(s), and where feed water for the aqueous layer includes at least one cationic polymer. The method of the invention includes adding an anionic additive selected from a group comprising anionic synthetic organic polymers, anionic polysaccharides, and any of their combinations to the feed water before formation of the aqueous layer.

公开(公告)号：US10047480B2

公开(公告)日：2018-08-14

申请号：US15129986

申请日：2015-03-10

申请人： BASF SE

发明人： Matthew Buchan ,  Reinhard Haffke ,  Guido Rensen ,  Christoph Hamers ,  Norbert Schall

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

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.

公开(公告)号：US20170101740A1

公开(公告)日：2017-04-13

申请号：US14880873

申请日：2015-10-12

申请人： Solenis Technologies, L.P. ,  UPM-Kymmene Corporation

发明人： John C. HARRINGTON ,  Kate Marritt LUSVARDI ,  Fushan ZHANG

IPC分类号： D21H17/25 ,  D21H17/37 ,  D21H17/43 ,  D21H21/10 ,  D21H17/44 ,  D21H17/42 ,  D21H23/04 ,  D21H17/00 ,  D21H17/45

CPC分类号： D21H17/25 ,  D21H3/00 ,  D21H11/18 ,  D21H17/37 ,  D21H17/375 ,  D21H17/38 ,  D21H17/42 ,  D21H17/43 ,  D21H17/44 ,  D21H17/45 ,  D21H17/72 ,  D21H21/10 ,  D21H23/04

摘要： A method of increasing the drainage performance of a pulp slurry during the manufacture of paper products by adding (a) at least one microfibrillated cellulose and (b) at least one associative polymer or at least one branched or crosslinked copolymer to the pulp slurry. This addition occurs before the dewatering step where the pulp slurry is formed into a fibrous mat.