申请人:SOLENIS TECHNOLOGIES CAYMAN, L.P.
公开号:US11203838B2
公开(公告)日:2021-12-21
A method for the production of paper or cardboard is provide comprising the following steps:
(A) Adding a water soluble polymer P to a first aqueous pulp suspension,
wherein polymer P is obtainable by
Polymerizing to a polymer V of
(i) 33 to 83 mol % of a monomer of formula I
in which R1═H or C1-C6 alkyl,
(ii) 6 to 56 mol % of diallyl dimethyl ammonium chloride, diallyl diethyl ammonium chloride or a salt form of a monoethylenically unsaturated monomer,
(iii) 11 to 61 mol % of a monoethylenically unsaturated carboxylic acid, sulfonic acid or phosphonic acid, or salt forms thereof,
(iv) 0 to 50 mol % of one or more ethylenically unsaturated monomers, and
hydrolyzing the N—C(═O)R1 groups to form primary amino or amidine groups,
(B) dehydrating the second aqueous pulp suspension to a wet paper structure,
(C) dehydrating the wet paper structure.
提供一种生产纸或纸板的方法,包括以下步骤:
(A) 在第一种含水纸浆悬浮液中加入水溶性聚合物 P、
其中聚合物 P 可通过以下方式获得
聚合成下列聚合物 V
(i) 33 至 83 摩尔%的式 I 单体
其中 R1═H 或 C1-C6 烷基、
(ii) 6 至 56 摩尔%的二烯丙基二甲基氯化铵、二烯丙基二乙基氯化铵 或单乙烯基不饱和单体的盐形式、
(iii) 11 至 61 摩尔%的单乙烯不饱和羧酸、磺酸或膦酸,或其盐类、
(iv) 0 至 50 摩尔%的一种或多种乙烯基不饱和单体,以及
水解 N-C(═O)R1基团以形成伯氨基或脒基、
(B) 将第二种含水纸浆悬浮液脱水成湿纸巾结构、
(C) 将湿纸结构脱水。