公开(公告)号：US20160273166A1

公开(公告)日：2016-09-22

申请号：US14442433

申请日：2013-11-13

Applicant: Kemira Oyj

Inventor： Asko Karppi ,  Matti Hietaniemi ,  Marco Polverari

IPC: D21H21/10 ,  D21H17/29 ,  D21H17/37 ,  D21H21/20

CPC classification number: D21H21/10 ,  C08B31/125 ,  C08L3/08 ,  D21H17/29 ,  D21H17/375 ,  D21H17/72 ,  D21H21/06 ,  D21H21/20

Abstract: The invention relates to a papermaking agent system in liquid form, which comprises (i) cationic starch solution, prepared by cooking a starch mixture comprising a starch component and a water component, and (ii) polymer composition, which has anionic and cationic groups and a cationic net charge of >0.1 meq/g. The polymer composition comprises or originates from at least one of constituents a), b) or c). Constituent a) contains an amphoteric polymer, which is a copolymer comprising structural units derived from acrylamide and/or methacrylamide monomers, and anionic and cationic groups attached to the copolymer. Constituent b) contains a first polymer, which is a copolymer comprising structural units derived from acrylamide and/or methacrylamide monomers, and anionic or cationic groups attached to the copolymer, as well as a second polymer, which comprises groups with opposite charge than the first polymer. Constituent c) contains a third polymer, which comprises a copolymer comprising structural units derived from acrylamide and/or methacrylamide monomers, as well as hydrolytically unstable cationic groups attached to the copolymer. Constituent a), b) or c) is added to one of the components of the starch mixture or to the starch mixture before the cooking of the starch mixture, and/or constituent a) or b) is added to the cationic starch solution after cooking of the starch mixture. The invention relates also to the use of the papermaking agent system and to a method for its preparation.

Abstract translation: 本发明涉及一种液体形式的造纸剂系统，其包括（i）通过蒸煮包含淀粉组分和水组分的淀粉混合物制备的阳离子淀粉溶液，和（ii）具有阴离子和阳离子基团的聚合物组合物， 阳离子净电荷> 0.1meq / g。 聚合物组合物包含或源于组分a），b）或c）中的至少一种。 组分a）包含两性聚合物，其是包含衍生自丙烯酰胺和/或甲基丙烯酰胺单体的结构单元和连接到共聚物上的阴离子和阳离子基团的共聚物。 组分b）包含第一聚合物，其是包含衍生自丙烯酰胺和/或甲基丙烯酰胺单体的结构单元和连接到共聚物上的阴离子或阳离子基团的共聚物，以及第二聚合物，其包含与第一聚合物相反的电荷 聚合物。 组分c）包含第三聚合物，其包含含有衍生自丙烯酰胺和/或甲基丙烯酰胺单体的结构单元的共聚物，以及与共聚物连接的水解不稳定的阳离子基团。 在蒸煮淀粉混合物之前，将组分a），b）或c）加入到淀粉混合物的一种组分或淀粉混合物中，和/或组分a）或b）加入阳离子淀粉溶液中 烹饪淀粉混合物。 本发明还涉及造纸剂体系的用途及其制备方法。