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    SURFACE SIZING AGENT FOR PAPERMAKING
    2.
    发明申请
    SURFACE SIZING AGENT FOR PAPERMAKING 有权

    公开(公告)号：US20210262170A1

    公开(公告)日：2021-08-26

    申请号：US17256653

    申请日：2019-04-10

    申请人： KURITA WATER INDUSTRIES LTD.

    发明人： Tomonari KATOU ,  Chigusa TAGUCHI

    IPC分类号： D21H21/16 ,  D21H17/28 ,  D21H17/14 ,  D21H17/19 ,  D21H17/00

    摘要： To provide a surface sizing agent for papermaking, which has good low foamability and mechanical stability and has an excellent sizing effect. The surface sizing agent for papermaking is a surface sizing agent for papermaking, comprising a composition obtained by polymerizing unsaturated monomers in the presence of a starch, wherein the amount of the starch is 25 to 40 mass % based on the total amount of the starch and the unsaturated monomers, the unsaturated monomers comprise at least a styrenic compound and a (meth)acrylic ester compound, and the amount of the styrenic compound is 10 mass % or more and less than 30 mass %, and the amount of the (meth)acrylic ester compound is 20 to 50 mass %, based on the total amount of the starch and the unsaturated monomers.

    Surface sizing agent for papermaking
    7.
    发明授权
    Surface sizing agent for papermaking 有权

    公开(公告)号：US11603630B2

    公开(公告)日：2023-03-14

    申请号：US17256653

    申请日：2019-04-10

    申请人： KURITA WATER INDUSTRIES LTD.

    发明人： Tomonari Katou ,  Chigusa Taguchi

    IPC分类号： D21H21/18 ,  D21H21/16 ,  D21H17/14 ,  D21H17/19 ,  D21H17/28 ,  D21H17/00

    摘要： To provide a surface sizing agent for papermaking, which has good low foamability and mechanical stability and has an excellent sizing effect. The surface sizing agent for papermaking is a surface sizing agent for papermaking, comprising a composition obtained by polymerizing unsaturated monomers in the presence of a starch, wherein the amount of the starch is 25 to 40 mass % based on the total amount of the starch and the unsaturated monomers, the unsaturated monomers comprise at least a styrenic compound and a (meth)acrylic ester compound, and the amount of the styrenic compound is 10 mass % or more and less than 30 mass %, and the amount of the (meth)acrylic ester compound is 20 to 50 mass %, based on the total amount of the starch and the unsaturated monomers.

    Transparent fibrous sheets and process for making
    9.
    发明授权
    Transparent fibrous sheets and process for making 失效
    透明纤维片和制造方法

    公开(公告)号：US4271227A

    公开(公告)日：1981-06-02

    申请号：US033801

    申请日：1979-04-26

    申请人： Peter Muller ,  Henry Mustacchi

    发明人： Peter Muller ,  Henry Mustacchi

    IPC分类号： D21H17/19 ,  D21H21/26 ,  G03C1/785 ,  B32B23/10 ,  B32B27/10

    CPC分类号： G03C1/785 ,  D21H17/19 ,  D21H21/26 ,  Y10T428/31902 ,  Y10T428/31906 ,  Y10T428/31935 ,  Y10T442/2779

    摘要： A transparent, non-stratified, three dimensional resin reinforced fibrous sheet and the process for its preparation is disclosed. A fibrous sheet is impregnated or coated with one or more tri or higher functional monomers that can be polymerized in-situ to form three dimensional polymer resins, in close contact with the fibrous material of the sheet. A transparentized fibrous sheet results which is resistant to water and alcohols, highly and evenly translucent and useful as tracing media vellum as well as a translucent base for sensitizing with reprographic coatings.

    摘要翻译： 公开了一种透明，非分层的三维树脂增强纤维片及其制备方法。 纤维片材被一种或多种三官能或更高官能单体浸渍或涂覆，可以与原位聚合形成三维聚合物树脂，与片材的纤维材料紧密接触。 透明化的纤维片材具有耐水和醇的特性，高度均匀的半透明并且可用作追踪媒体纸浆以及用于复印涂层敏化的半透明基底。

    Method for preparing paper board having improved wet compression strength
    10.
    发明授权
    Method for preparing paper board having improved wet compression strength 失效
    制备具有改善的湿压强度的纸板的方法

    公开(公告)号：US4091167A

    公开(公告)日：1978-05-23

    申请号：US686217

    申请日：1976-05-12

    申请人： Toshio Okada ,  Hideharu Ohtsuki ,  Hiroshi Inagaki ,  Toshiaki Hanyuda ,  Masateru Tokuno ,  Seiichi Igarashi

    发明人： Toshio Okada ,  Hideharu Ohtsuki ,  Hiroshi Inagaki ,  Toshiaki Hanyuda ,  Masateru Tokuno ,  Seiichi Igarashi

    IPC分类号： D21H17/19 ,  D21H19/16 ,  B05D3/06

    CPC分类号： D21H19/16 ,  D21H17/19 ,  Y10T428/31511

    摘要： This invention relates to a method for preparing paper board having excellent wet tensile strength and compression strength, which comprises (a) having paper board impregnated or coated with a mixture of an unsaturated vinyl ester prepolymer having a molecular weight of 300 to 3000 and having at least one hydroxyl group at the .beta.-position with respect to an ester bond in the molecule with at least one monomer selected from the group of methylacrylate, ethylacrylate and butylacrylate in a mixing weight ratio of 10:90-40:60, and (b) irradiating the paper board having the resinous mixture with electrons to cure the resinous mixture.

    摘要翻译： 本发明涉及一种制备具有优异的湿拉伸强度和抗压强度的纸板的方法，该方法包括（a）将纸板浸渍或涂覆有分子量为300至3000的不饱和乙烯基酯预聚物的混合物， 在β-分子中相对于酯键的至少一个羟基与混合重量比为10：90-40：60的至少一种选自丙烯酸甲酯，丙烯酸乙酯和丙烯酸丁酯的单体和（b ）用电子照射具有树脂混合物的纸板以固化树脂混合物。