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    Method for producing chemically modified cellulose fiber
    2.
    发明授权
    Method for producing chemically modified cellulose fiber 有权

    公开(公告)号：US11629454B2

    公开(公告)日：2023-04-18

    申请号：US16644371

    申请日：2018-09-28

    申请人： DAI-ICHI KOGYO SEIYAKU CO., LTD.

    发明人： Yuka Kitano ,  Masayuki Hashimoto

    IPC分类号： C08B5/14 ,  C08J7/14 ,  D06M11/66 ,  D01F2/24 ,  D01F11/02 ,  D01D5/42 ,  D06M101/06

    摘要： Provided is a method for producing a chemically modified cellulose fiber with which fibrillation can be performed along with sulfation reaction.
    The method for producing a chemically modified cellulose fiber includes a step (a) of treating a cellulose fiber with sulfamic acid to allow a cellulose fine fiber which is a constituent of the cellulose fiber to react with the sulfamic acid, thereby substituting some of hydroxyl groups of cellulose with a substituent represented by a structural formula (1) below (where M represents a monovalent to trivalent cation), and a step (b) of performing fibrillation simultaneously with the step (a).

    EMULSION POLYMERIZATION METHOD USING REACTIVE EMULSIFIER, AQUEOUS POLYMER DISPERSION OBTAINED BY THE SAME, AND POLYMER FILM
    4.
    发明申请
    EMULSION POLYMERIZATION METHOD USING REACTIVE EMULSIFIER, AQUEOUS POLYMER DISPERSION OBTAINED BY THE SAME, AND POLYMER FILM 审中-公开
    使用反应性乳化剂，由其获得的水性聚合物分散体和聚合物膜的乳液聚合方法

    公开(公告)号：US20140249272A1

    公开(公告)日：2014-09-04

    申请号：US14349159

    申请日：2012-09-19

    申请人： Dai-Ichi Kogyo Seiyaku Co., Ltd.

    发明人： Asako Ogasawara ,  Masayuki Hashimoto

    IPC分类号： C08K3/20

    CPC分类号： C08K3/20 ,  C08F2/24 ,  C08F220/14 ,  C08F220/20 ,  C08F222/1006 ,  C08F236/02 ,  C08F236/04 ,  C08F2220/382 ,  C08F2220/1825 ,  C08F220/06 ,  C08F212/08

    摘要： An emulsion polymerization is carried out using one or more polymerizable unsaturated monomers X having at least one carbon-carbon double bond in a molecule, one or more reactive emulsifiers Y having at least one polymerizable group in a molecule, and one or more polyfunctional monomers Z1 having two or more polymerizable unsaturated groups in a molecule and having a molecular weight per functional group of less than 150, or one or more hydrophilic monomers Z2 having one polymerizable unsaturated group and a hydrophilic group in a molecule and having an average molecular weight of less than 250, with a proportion of the total mass of the polyfunctional monomer Z1 or hydrophilic monomer Z2 to the total mass of the reactive emulsifier Y being in the range of Z1/Y=1/3 to 1/30 or Z2/Y=1/1 to 1/30.

    摘要翻译： 使用分子中具有至少一个碳 - 碳双键的一种或多种可聚合不饱和单体X，在分子中具有至少一个可聚合基团的一种或多种反应性乳化剂Y和一种或多种多官能单体Z1进行乳液聚合 在分子中具有两个或更多个可聚合不饱和基团，每个官能团的分子量小于150，或分子中具有一个可聚合不饱和基团和亲水基团的一种或多种亲水性单体Z2，其平均分子量较小 多于官能单体Z1或亲水性单体Z2的总质量与反应性乳化剂Y的总质量的比例在Z1 / Y = 1/3〜1/30或Z2 / Y = 1的范围内 / 1至1/30。

    EMULSIFYING AGENT FOR EMULSION POLYMERIZATION
    8.
    发明申请
    EMULSIFYING AGENT FOR EMULSION POLYMERIZATION 有权
    用于乳液聚合的乳化剂

    公开(公告)号：US20140243552A1

    公开(公告)日：2014-08-28

    申请号：US14352085

    申请日：2012-09-18

    申请人： DAI-ICHI KOGYO SEIYAKU CO., LTD.

    发明人： Asako Ogasawara ,  Masayuki Hashimoto

    IPC分类号： C08F2/30 ,  C08F2/26

    CPC分类号： C08F2/30 ,  C08F2/24 ,  C08F2/26 ,  C08F290/062 ,  C08F212/08 ,  C08F220/18 ,  C08F220/06 ,  C08F2220/1825

    摘要： A reactive emulsifier comprising a compound of formula (I), which makes polymerization stability satisfactory and is capable of improving the water resistance etc. of the polymer film to be obtained. In the formula (I), D represents a polymerizable unsaturated group represented by the chemical formula D-1 or D-2; m1 represents a number of 1 or larger; R1 represents an alkyl group having 1 to 12 carbon atoms; m2 represents a number of 0 to 4; and the sum of m1 and m2 is 1 to 5. R2 represents a hydrocarbon group having 6 to 30 carbon atoms; A represents either an alkylene group or a substituted alkylene group which has 2 to 4 carbon atoms; and n is in the range of 0 to 1,000. X represents a hydrogen atom or an anionic hydrophilic group which is —(CH2)a—SO3M etc. R3 represents a hydrogen atom or methyl.

    摘要翻译： 一种包含式（I）化合物的反应性乳化剂，其使得聚合稳定性令人满意并且能够改善所获得的聚合物膜的耐水性等。 在式（I）中，D表示由化学式D-1或D-2表示的可聚合不饱和基团; m1表示1以上的数; R1表示碳原子数1〜12的烷基。 m2表示0〜4的数; m1和m2的和为1〜5 .R2表示碳原子数为6〜30的烃基。 A表示亚烷基或具有2至4个碳原子的取代的亚烷基; n为0〜1000的范围。 X表示氢原子或 - （CH 2）a -SO 3 M等的阴离子亲水基团，R 3表示氢原子或甲基。

    Chemically modified cellulose fiber and method for producing the same
    9.
    发明授权
    Chemically modified cellulose fiber and method for producing the same 有权

    公开(公告)号：US11459407B2

    公开(公告)日：2022-10-04

    申请号：US16620986

    申请日：2018-05-30

    申请人： DAI-ICHI KOGYO SEIYAKU CO., LTD.

    发明人： Yuka Kitano ,  Masayuki Hashimoto

    IPC分类号： C08B5/14 ,  D01F2/28

    摘要： A sulfated cellulose fiber having a cellulose I crystal structure is provided.
    A chemically modified cellulose fiber which has a cellulose I crystal and in which some hydroxyl groups of cellulose are substituted with a substituent represented by formula (1). An amount of the substituent introduced is 0.1 mmol to 3.0 mmol per 1 g of the chemically modified cellulose fiber, and an average degree of polymerization is 350 or more. (In formula (1), M represents a monovalent to trivalent cation.) In the production of the chemically modified cellulose fiber, a cellulose fiber is treated with sulfamic acid while maintaining a cellulose fiber shape to allow sulfamic acid and a cellulose fine fiber which is a constituent of the cellulose fiber to react with each other.