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    • 3. 发明申请
    • PAPERMAKING INTERNAL SIZING AGENT AND USE THEREOF
    • 制造内部尺寸代理及其使用
    • US20100200185A1
    • 2010-08-12
    • US12670186
    • 2008-03-06
    • Kazunari SakaiTakahiro FujiwaraKazushige Inaoka
    • Kazunari SakaiTakahiro FujiwaraKazushige Inaoka
    • D21H17/45C08F212/08C08F220/10C08F220/60C08F220/06C08F228/02D21H17/37
    • D21H21/16D21H17/41D21H17/455D21H17/675
    • To provide a papermaking internal sizing agent capable of efficiently imparting sizing performance even in neutral papermaking which uses calcium carbonate as filler, and uses no aluminum sulfate or uses a small amount of aluminum sulfate, and also provide a paper or a paperboard obtained by using the papermaking internal sizing agent. The papermaking internal sizing agent comprises as an effective ingredient an amphoteric copolymer having hydrophobic groups and cationic groups, at least a part of the cationic groups being quaternized. Preferably, the amphoteric copolymer is obtained by polymerizing monomer ingredients that it essentially contain a hydrophobic monomer (A), a cationic monomer (B), and an anionic monomer (C) and that an anion equivalent of the monomer (C) is 0.1 to 90% of a cation equivalent of the monomer (B), in which a rate of quaternizing of the cationic groups is not less than 40% by mole. The paper or the paperboard contains the above papermaking internal sizing agent.
    • 提供即使在使用碳酸钙作为填料的中性造纸中也能有效赋予施胶性能,不使用硫酸铝或使用少量硫酸铝的造纸内施胶剂,并且还提供通过使用碳酸钙作为填料获得的纸或纸板 造纸内部施胶剂。 造纸内部施胶剂包括具有疏水基团和阳离子基团的两性共聚物作为有效成分,至少一部分阳离子基团被季铵化。 优选地,两性共聚物通过使其基本上含有疏水单体(A),阳离子单体(B)和阴离子单体(C)的单体成分聚合而获得,并且单体(C)的阴离子当量为0.1〜 单体(B)的阳离子当量的90%,其中阳离子基团的季铵化率不低于40摩尔%。 纸或纸板包含上述造纸内部施胶剂。
    • 7. 发明授权
    • Surface sizing agent and use thereof
    • 表面施胶剂及其用途
    • US07902276B2
    • 2011-03-08
    • US12439445
    • 2006-08-31
    • Kazunari SakaiYoko Hayashi
    • Kazunari SakaiYoko Hayashi
    • C08L3/02C08L3/00
    • D21H21/16C08F251/00D21H17/24D21H17/37
    • A surface sizing agent is provided which has excellent dispersion stability, enables impartation of high sizing performance under a wide range of use conditions, irrespective of the characteristics of water used for sizing (hardness, pH, etc.) and the type of paper, and has low foaming property and good coating workability. Specifically, in a dispersion-type surface sizing agent obtained by emulsion polymerization of a monomer composition in the presence of a degraded dextrin, 20-40 parts by weight of a degraded dextrin having a weight average molecular weight of 26000-50000, obtained by enzyme denaturation of a waxy corn starch, are allowed to exist to 100 parts by weight of the total amount of the monomer composition, and the monomer composition includes (a) 10-35% by weight of at least one type of (meth)acrylic acid alkyl ester, (b) 40-80% by weight of other copolymerizable hydrophobic monomer, and (c) 1-10% by weight of a strong acid group-containing monomer.
    • 提供了表面施胶剂,其具有优异的分散稳定性,能够在宽范围的使用条件下赋予高施胶性能,而不考虑用于施胶(硬度,pH等)和纸张类型的水的特性,以及 具有低发泡性和良好的涂布加工性。 具体地说,在降解糊精的存在下,通过单体组合物的乳液聚合得到的分散型表面施胶剂中,通过酶得到20〜40重量份的重均分子量为26000-50000的降解糊精 允许蜡质玉米淀粉变性至单体组合物总量的100重量份,单体组合物包含(a)10-35重量%的至少一种(甲基)丙烯酸 烷基酯,(b)40-80重量%的其它可共聚的疏水单体,和(c)1-10重量%的含有强酸基团的单体。
    • 10. 发明授权
    • Papermaking internal sizing agent and use thereof
    • 造纸内部施胶剂及其用途
    • US08241462B2
    • 2012-08-14
    • US12670186
    • 2008-03-06
    • Kazunari SakaiTakahiro FujiwaraKazushige InaokaTakashi YamaguchiMasaki ItoYasunobu Ooka
    • Kazunari SakaiTakahiro FujiwaraKazushige InaokaTakashi YamaguchiMasaki ItoYasunobu Ooka
    • D21H17/37D21H17/41D21H17/42D21H17/43D21H17/44D21H17/45
    • D21H21/16D21H17/41D21H17/455D21H17/675
    • To provide a papermaking internal sizing agent capable of efficiently imparting sizing performance even in neutral papermaking which uses calcium carbonate as filler, and uses no aluminum sulfate or uses a small amount of aluminum sulfate, and also provide a paper or a paperboard obtained by using the papermaking internal sizing agent. The papermaking internal sizing agent comprises as an effective ingredient an amphoteric copolymer having hydrophobic groups and cationic groups, at least a part of the cationic groups being quaternized. Preferably, the amphoteric copolymer is obtained by polymerizing monomer ingredients that it essentially contain a hydrophobic monomer (A), a cationic monomer (B), and an anionic monomer (C) and that an anion equivalent of the monomer (C) is 0.1 to 90% of a cation equivalent of the monomer (B), in which a rate of quaternizing of the cationic groups is not less than 40% by mole. The paper or the paperboard contains the above papermaking internal sizing agent.
    • 提供即使在使用碳酸钙作为填料的中性造纸中也能有效赋予施胶性能,不使用硫酸铝或使用少量硫酸铝的造纸内施胶剂,并且还提供通过使用碳酸钙作为填料获得的纸或纸板 造纸内部施胶剂。 造纸内部施胶剂包括具有疏水基团和阳离子基团的两性共聚物作为有效成分,至少一部分阳离子基团被季铵化。 优选地,两性共聚物通过使其基本上含有疏水单体(A),阳离子单体(B)和阴离子单体(C)的单体成分聚合而获得,并且单体(C)的阴离子当量为0.1〜 单体(B)的阳离子当量的90%,其中阳离子基团的季铵化率不低于40摩尔%。 纸或纸板包含上述造纸内部施胶剂。