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    Cationic polyetheramine dispersants for preparing papermaking stock
    4.
    发明授权
    Cationic polyetheramine dispersants for preparing papermaking stock 有权

    公开(公告)号：US10662586B2

    公开(公告)日：2020-05-26

    申请号：US15984582

    申请日：2018-05-21

    申请人： GPCP IP Holdings LLC

    发明人： Bruce J. Kokko ,  Daniel W. Sumnicht ,  Wayne F. Winkler

    IPC分类号： D21H21/08 ,  C08G73/02 ,  D21H23/04 ,  D21H11/12 ,  D21H17/56 ,  D21H17/52 ,  D21H17/00 ,  D21H17/45

    摘要： A cationic polyether amine dispersant for papermaking fibers comprises the polymeric reaction product of a polyether diamine, a polyether bisepoxide and a quaternary ammonium salt. The polyether diamine, the polyether bisepoxide and the quaternary ammonium salt reactants are reacted in the following molar ratios: the molar ratio of amine functionality of the polyether diamine to epoxide functionality of the polyether bisepoxide is from 0.5:1 to 2:1 and the molar ratio of the amine functionality of the polyether diamine to the epoxide functionality of the quaternary ammonium salt is from 10:1 to 40:1. The dispersant is used in stock preparation used in paper products including absorbent products as well as paperboard.

    Emulsification of alkenyl succinic anhydride with an amine-containing homopolymer of copolymer
    8.
    发明授权
    Emulsification of alkenyl succinic anhydride with an amine-containing homopolymer of copolymer 有权

    公开(公告)号：US10227731B2

    公开(公告)日：2019-03-12

    申请号：US15485829

    申请日：2017-04-12

    申请人： Ecolab USA Inc.

    发明人： Michael R. St. John ,  David J. Castro ,  Mei Liu

    IPC分类号： D21H21/16 ,  D21H17/56 ,  C08J3/03 ,  D21H17/16 ,  D21H17/55 ,  C08L33/26

    摘要： The present disclosure provides for a method of preparing and using an emulsion for treating a papermaking process. The emulsion is an oil-in-water emulsion of alkenyl succinic anhydride emulsified with a polymer comprising at least one primary or secondary amine containing monomer. The method comprises adding an oil-in-water emulsion to the papermaking process; wherein the oil-in-water emulsion comprises alkenyl succinic anhydride emulsified with a polymer comprising at least one primary or secondary amine containing monomer; and wherein the oil-in-water emulsion is added in an amount sufficient to improve sizing of the paper produced by the papermaking process. The primary or secondary amine may be a secondary amine comprising diallylamine, and the polymer may be a diallylamine-acrylamide copolymer.

    Method for producing corrugated cardboard
    9.
    发明授权
    Method for producing corrugated cardboard 有权

    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.