公开(公告)号：US11680371B2

公开(公告)日：2023-06-20

申请号：US16757477

申请日：2018-10-10

申请人： Solenis Technologies, L.P.

发明人： Christoph Hamers ,  Anton Esser ,  Frans De Bruyn ,  Christopher Alan Gray ,  Ralph Isermann

IPC分类号： D21H21/10 ,  D21F9/02 ,  D21H17/37 ,  D21H17/43 ,  D21H23/50 ,  D21H25/06 ,  D21H27/30

CPC分类号： D21H21/10 ,  D21F9/02 ,  D21H17/37 ,  D21H17/43 ,  D21H23/50 ,  D21H25/06 ,  D21H27/30

摘要： A method for producing dried multilayer paper is provided comprising dewatering a first aqueous fibrous suspension, thereby creating a first fibrous web; dewatering a second aqueous fibrous suspension, thereby creating a second fibrous web; spraying one or more of a first fibrous web and a second fibrous web with a spray solution or spray suspension, thereby producing at least one sprayed fibrous web; assembling the first fibrous web with the second fibrous web; dehydrating the resulting layer compound by pressing; then dehydrating by supplying heat, which creates the dried multilayer paper. The spray solution or spray suspension contains water and at least one water-soluble polymer P. The polymer P is obtained by polymerizing: 40 to 85 mol % of a monomer of Formula I




in which R1=H or C1-C6-Alkyl; and 15 to 60 mol % of one or more ethylenically unsaturated monomers.

公开(公告)号：US20210395406A1

公开(公告)日：2021-12-23

申请号：US17304579

申请日：2021-06-23

申请人： SOLENIS TECHNOLOGIES, L.P. ,  Technische Universität Chemnitz

发明人： Florian Taubert ,  Lysann Kaßner ,  Tina Uhlig ,  Andreas Seifert ,  Stefan Spange ,  Michael Sommer ,  Christoph Hamers ,  Hans-Joachim Haehnle

IPC分类号： C08F26/02 ,  D21H17/34 ,  D21H21/18 ,  D21H27/10

摘要： A vinyl amine containing polymer comprises randomly distributed repeating monomer units having at least two of the following formulae: wherein, R1 is a hydrogen atom or a methyl group; and wherein the vinyl amine containing polymer comprises repeating monomer unit III and/or IV in a total amount of from about 1.5 weight percent to about 8 weight percent based on a total weight of the polymer.