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    Sulfate ester modified cellulose nanofibers and method for producing cellulose nanofibers
    1.
    发明授权
    Sulfate ester modified cellulose nanofibers and method for producing cellulose nanofibers 有权

    公开(公告)号：US12084525B2

    公开(公告)日：2024-09-10

    申请号：US17956990

    申请日：2022-09-30

    Applicant: Yokogawa Electric Corporation

    Inventor： Lianzhen Lin ,  Masanori Hori ,  Ayako Maruta

    IPC: C08B5/14 ,  C08B7/00 ,  C08B15/00

    CPC classification number: C08B5/14 ,  C08B7/00 ,  C08B15/00

    Abstract: Sulfate ester modified cellulose nanofibers having an average fiber diameter in the range of 1 nm to 500 nm, and having sulfate ester modified hydroxyl groups on surfaces of the cellulose nanofibers. A method of producing cellulose nanofibers that are nanosized, that have a high crystallinity degree, and that have large aspect ratios, the method being a chemical method that does not require any physical pulverization, that is energy-saving, and that can be performed under mild reaction conditions. A method of producing modified cellulose nanofibers including modifying the surfaces of the cellulose nanofibers through esterification or urethanization. A method of producing cellulose nanofibers includes impregnating cellulose with a fibrillation solution containing dimethylsulfoxide, at least one carboxylic acid anhydride selected from acetic anhydride and propionic anhydride, and sulfuric acid to fibrillate the cellulose.

    PROCESS FOR PREPARING POLYSACCHARIDE SULFATES, AND POLYSACCHARIDE SULFATE
    2.
    发明公开
    PROCESS FOR PREPARING POLYSACCHARIDE SULFATES, AND POLYSACCHARIDE SULFATE 审中-公开

    公开(公告)号：US20240287209A1

    公开(公告)日：2024-08-29

    申请号：US18570416

    申请日：2021-06-18

    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

    Inventor： Kay HETTRICH

    IPC: C08B5/14 ,  A61K9/50 ,  B01J13/14

    CPC classification number: C08B5/14 ,  A61K9/5036 ,  B01J13/14

    Abstract: The present invention relates to a process for preparing polysaccharide sulfates. In the process, a mixture comprising at least one polysaccharide and at least one polar aprotic solvent is provided. The at least one polysaccharide is reacted to form at least one polysaccharide acetate sulfate, wherein at least one sulphating agent, at least one acetylation agent and at least one peroxodisulfate are added to the mixture, the mixture being subsequently subjected to a temperature treatment. The at least one polysaccharide acetate sulfate is separated from the mixture and is reacted to form at least one polysaccharide sulfate. The present invention also relates to a polysaccharide sulfate that can be prepared with the process according to the invention. The present invention further relates to a microcapsule and to a process for preparing a microcapsule.

    POROUS CELLULOSE GEL, METHOD FOR PRODUCING THE SAME, AND USE THEREOF
    3.
    发明申请
    POROUS CELLULOSE GEL, METHOD FOR PRODUCING THE SAME, AND USE THEREOF 有权
    多孔纤维素凝胶，其制造方法及其用途

    公开(公告)号：US20140128253A1

    公开(公告)日：2014-05-08

    申请号：US14155051

    申请日：2014-01-14

    Applicant: JNC CORPORATION

    Inventor： Yasuto UMEDA ,  Yasuo MATSUMOTO ,  Masami SHIINA ,  Masami TODOKORO ,  Yoshihiro MATSUMOTO

    IPC: B01J20/291

    CPC classification number: B01J20/291 ,  B01J20/26 ,  B01J20/262 ,  B01J20/265 ,  B01J20/267 ,  B01J20/285 ,  C08B5/14 ,  C08L1/16

    Abstract: The present invention provides a porous cellulose gel having a high mechanical strength capable of being operated at a higher flow rate, and a method for producing the same. To a suspension liquid of cellulose particles, a crosslinking agent in an amount of from 4 to 12 times the amount of the cellulose monomer in terms of moles and an alkali in an amount of from 0.1 to 1.5 times the amount of the crosslinking agent in terms of moles are added continuously dropwise or added dividedly over a prescribed period of time, whereby flow rate characteristics of a resulting porous cellulose gel can be enhanced. According to the invention, the production efficiency of a polymer substance, such as a nucleic acid and a protein can be enhanced.

    Abstract translation: 本发明提供了能够以较高流量运转的机械强度高的多孔纤维素凝胶及其制造方法。 对于纤维素颗粒的悬浮液，交联剂的量为纤维素单体的摩尔数的4至12倍，碱的量为交联剂的量的0.1至1.5倍 连续滴加或分时加入规定的时间，由此可以提高所得多孔纤维素凝胶的流动速率特性。 根据本发明，可以提高聚合物物质如核酸和蛋白质的生产效率。

    METHODS FOR INTEGRATING THE PRODUCTION OF CELLULOSE NANOFIBRILS WITH THE PRODUCTION OF CELLULOSE NANOCRYSTALS
    4.
    发明申请
    METHODS FOR INTEGRATING THE PRODUCTION OF CELLULOSE NANOFIBRILS WITH THE PRODUCTION OF CELLULOSE NANOCRYSTALS 有权
    用于生产纤维素纳米微粒的方法用于生产纤维素纳米微粒

    公开(公告)号：US20130303750A1

    公开(公告)日：2013-11-14

    申请号：US13472137

    申请日：2012-05-15

    Applicant: JunYong Zhu ,  Richard S. Reiner

    Inventor： JunYong Zhu ,  Richard S. Reiner

    IPC: C08B5/00 ,  C08B5/14 ,  C08B15/00 ,  B82Y40/00 ,  B82Y30/00

    CPC classification number: C08B15/00 ,  B82Y40/00 ,  C08B5/00 ,  C08B5/14

    Abstract: Methods for integrating the production of cellulose nanocrystals (CNC) and cellulose nanofibrils (CNF) from cellulose are provided. The methods use milder acid hydrolysis conditions than those for maximal CNC production to achieve reduced degradation of cellulose into soluble sugars. Also provided are negatively charged cellulosic solid residues (CSRs) in the form of cellulose fibers (CF) and/or cellulose microfibrils (CMF) during the acid hydrolysis, as well as CNFs fabricated from the CSRs.

    Abstract translation: 提供了从纤维素制备纤维素纳米晶体（CNC）和纤维素纳米纤维（CNF）的生产方法。 该方法使用比最大CNC生产更温和的酸水解条件，以实现纤维素降解成可溶性糖。 还提供了在酸水解期间纤维素纤维（CF）和/或纤维素微原纤维（CMF）形式的带负电荷的纤维素固体残余物（CSR）以及由CSR制造的CNF。

    Inhibitors against sodium ion absorption, and preventive or therapeutic agents and foods containing the same
    6.
    发明申请
    Inhibitors against sodium ion absorption, and preventive or therapeutic agents and foods containing the same 审中-公开
    抑制钠离子吸收，以及预防或治疗剂及含有这些物质的食品

    公开(公告)号：US20030027789A1

    公开(公告)日：2003-02-06

    申请号：US10181057

    申请日：2002-07-12

    Inventor： Ippei Yamaoka ,  Kyota Sakai ,  Kozo Asagi ,  Takuzi Uesako ,  Kinzi Hashimoto ,  Masaru Kobayashi ,  Tsutomu Uehara

    IPC: A61K031/717 ,  C08B011/12

    CPC classification number: C08B5/00 ,  A61K31/717 ,  C08B5/14 ,  C08B11/00 ,  C08B11/04 ,  C08B11/10 ,  C08B11/12

    Abstract: The present invention provides a sodium ion absorption inhibitor comprising a metal salt, other than a sodium salt, of a cellulose derivatives represented by the following formula (I) as an active ingredient, whereby absorption of salt excessively present into a living body is effectively inhibited and salt excessively present is excreted outside the body positively and safely. Furthermore, the present invention provides an agent for preventing and treating diseases caused by excessive salt ingestion or diseases in which restriction on salt ingestion is required, comprising the same as an active ingredient, and foods comprising the same. R-O-Anullnull(I) (wherein R represents a cellulose residue and A represents a functional group having cation-exchange ability)

    Abstract translation: 本发明提供一种钠离子吸收抑制剂，其包含由下式（I）表示的纤维素衍生物作为活性成分的钠盐以外的金属盐，由此有效抑制过量存在于生物体中的盐的吸收 过量的盐会积极安全地排出体外。 此外，本发明提供了用于预防和治疗由摄取过量引起的疾病或需要对其进行盐摄入限制的疾病的药剂，其包含与活性成分相同的食品以及包含该盐的食品。 R-O-A（I）（其中R表示纤维素残基，A表示具有阳离子交换能力的官能团）

    Process for preparing a sulfate ester of a polyhydroxy polymer
    8.
    发明授权
    Process for preparing a sulfate ester of a polyhydroxy polymer 失效
    制备多羟基聚合物硫酸酯的方法

    公开(公告)号：US4177345A

    公开(公告)日：1979-12-04

    申请号：US934818

    申请日：1978-08-18

    Applicant: Richard G. Schweiger

    Inventor： Richard G. Schweiger

    IPC: C07C203/00 ,  C07C203/04 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08B31/06 ,  C08B37/00 ,  C08F8/30 ,  C08F8/36 ,  C08F8/42

    CPC classification number: C08F8/36 ,  C08B31/06 ,  C08B37/00 ,  C08B5/00 ,  C08B5/02 ,  C08B5/14 ,  C08F8/30 ,  C08F8/42

    Abstract: A process for preparing a sulfate ester of a polyhydroxy polymer which is a partially substituted polysaccharide or a polyvinyl alcohol which contains ether groups, ester groups other than sulfate, or a mixture of ether groups and ester groups other than sulfate. A nitrite ester of the partially substituted polymer is reacted with sulfur trioxide or a complex thereof to obtain a mixed nitrite:sulfate ester which is then reacted with a protic solvent to remove residual nitrite ester groups.A process for preparing a substantially uniformly substituted colloidal cellulose sulfate having a degree of substitution of about 1.1 to 2.0. A nitrite ester of cellulose having a degree of substitution less than about 2 is reacted with sulfur trioxide or a complex thereof to obtain a mixed nitrite:sulfate ester which is reacted with a protic solvent to remove residual nitrite ester groups.A process for preparing a substantially uniformly substituted cellulose sulfate having a degree of substitution ranging up to about 1.1. A nitrite ester of cellulose having a degree of substitution of about 2 to below about 3 is reacted with sulfur trioxide or a complex thereof to obtain a mixed nitrite:sulfate ester which is then reacted with a protic solvent to remove residual nitrite ester groups.

    Abstract translation: 制备多羟基聚合物的硫酸酯的方法，该多羟基聚合物是部分取代的多糖或含有醚基的聚乙烯醇，除硫酸酯以外的酯基，或除了硫酸酯以外的醚基和酯基的混合物。 将部分取代的聚合物的亚硝酸酯与三氧化硫或其络合物反应，得到混合的亚硝酸盐：硫酸酯，然后与质子溶剂反应以除去残留的亚硝酸酯基团。 一种制备基本上均匀取代的取代度为约1.1至2.0的胶体硫酸纤维素的方法。 将取代度小于约2的纤维素的亚硝酸酯与三氧化硫或其配合物反应，得到与质子溶剂反应以除去残留的亚硝酸酯基团的混合亚硝酸盐：硫酸酯。 一种制备基本上均匀取代的具有高达约1.1的取代度的硫酸纤维素的方法。 具有约2至低于约3的取代度的纤维素的亚硝酸酯与三氧化硫或其络合物反应，得到混合的亚硝酸盐：硫酸酯，然后与质子溶剂反应以除去残留的亚硝酸酯基团。

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