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    CROSSLINKED CELLULOSE AS PRECURSOR IN PRODUCTION OF HIGH-GRADE CELLULOSE DERIVATIVES AND RELATED TECHNOLOGY
    1.
    发明申请
    CROSSLINKED CELLULOSE AS PRECURSOR IN PRODUCTION OF HIGH-GRADE CELLULOSE DERIVATIVES AND RELATED TECHNOLOGY 有权

    公开(公告)号：US20170247839A1

    公开(公告)日：2017-08-31

    申请号：US15067749

    申请日：2016-03-11

    申请人： WEYERHAEUSER NR COMPANY

    发明人： Mengkui Lou

    IPC分类号： D21H13/04

    CPC分类号： D21C9/005 ,  C08B15/10 ,  C08H8/00 ,  D21C9/1063 ,  D21C9/147 ,  D21C9/18 ,  D21H13/04

    摘要： A pulp in accordance with a particular embodiment includes crosslinked cellulose fibers. The pulp can have high brightness, reactivity, and intrinsic viscosity. The pulp, therefore, can be well suited for use as a precursor in the production of low-color, high-viscosity cellulose derivatives. A method in accordance with a particular embodiment of the present technology includes forming a pulp from a cellulosic feedstock, bleaching the pulp, crosslinking cellulose fibers within the pulp while the pulp has a high consistency, and drying the pulp. The bleaching process can reduce a lignin content of the pulp to less than or equal to 0.09% by oven-dried weight of the crosslinked cellulose fibers. Crosslinking the cellulose fibers can include exposing the cellulose fibers to a glycidyl ether crosslinker having two or more glycidyl groups and a molecular weight per epoxide within a range from 140 to 175.

    MEDICAL NONWOVEN FABRIC, AND PREPARATION METHOD THEREOF
    2.
    发明申请
    MEDICAL NONWOVEN FABRIC, AND PREPARATION METHOD THEREOF 审中-公开
    医用非织造布及其制备方法

    公开(公告)号：US20120270458A1

    公开(公告)日：2012-10-25

    申请号：US13517356

    申请日：2010-04-01

    申请人： Jung Nam Im ,  Dae Young Lim ,  Guk-Hwan An ,  Yoon Jin Kim

    发明人： Jung Nam Im ,  Dae Young Lim ,  Guk-Hwan An ,  Yoon Jin Kim

    IPC分类号： D21H11/00 ,  D21H17/24 ,  B32B37/06 ,  D21H17/54 ,  B32B37/14 ,  B32B5/26 ,  D21H17/36

    CPC分类号： D21H11/00 ,  A61F13/36 ,  A61F13/44 ,  A61F2013/00217 ,  A61F2013/15495 ,  A61F2013/15869 ,  A61F2013/15951 ,  A61L15/26 ,  A61L15/28 ,  A61L15/56 ,  A61L15/60 ,  A61L31/042 ,  A61L31/048 ,  A61L31/129 ,  A61L31/146 ,  D04H1/407 ,  D21H5/1281 ,  D21H13/04 ,  D21H15/02 ,  D21H17/24 ,  D21H17/25 ,  D21H17/36 ,  D21H17/375 ,  D21H17/53 ,  D21H21/14 ,  D21H21/18 ,  D21H21/28 ,  D21H21/52 ,  D21H25/04 ,  D21H27/30 ,  Y10T156/10 ,  Y10T442/668 ,  Y10T442/669 ,  C08L1/00

    摘要： The present invention relates to a medical nonwoven fabric comprising gelable cellulose derivative short-cut fibers as prepared by the paper making process, a preparation method thereof, and an adhesion prevention barrier using the same. The present invention provides a single phase of medical nonwoven fabric comprising gelable cellulose derivative short-cut fibers, to induce capillary action of micropores formed between the fibers and thereby control the gelation time, and provides a composite nonwoven fabric formed by laminating a nonwoven fabric layer comprising a different kind of biodegradable polymer material not susceptible to gelation on the single-phase of medical nonwoven fabric comprising gelable cellulose derivative short-cut fibers, thereby improving dimensional stability and convenience of surgical procedure. The present invention further provides a dyed medical nonwoven fabric to improve visibility, allowing easiness of recognizing the placement or location of the medical nonwoven fabric. Further, the single-phase nonwoven fabric or the composite nonwoven fabric, which makes it possible to efficiently control the gelation time by way of capillary action of the micropores formed between the fiber in the nonwoven fabric, can also be used as an adhesion prevention barrier with improved convenience of surgical procedure and post-surgical adhesion, in contrast to the conventional knit or film type adhesion prevention barrier.

    摘要翻译： 本发明涉及一种医用无纺布，其包括通过造纸工艺制备的可胶化纤维素衍生物短切纤维，其制备方法和使用其的防粘连屏障。 本发明提供一种包含可胶化纤维素衍生物短切纤维的医用非织造布的单相，以诱导在纤维之间形成的微孔的毛细作用，从而控制凝胶化时间，并提供通过层压非织造织物层 包括在包含可胶化纤维素衍生物短切纤维的医用无纺织物的单相上不易凝胶化的不同类型的可生物降解聚合物材料，从而提高尺寸稳定性和手术方法的便利性。 本发明还提供一种染色医用无纺布，以提高可视性，容易识别医用无纺布的放置位置。 此外，通过无纺布中的纤维之间形成的微孔的毛细作用有效地控制凝胶化时间的单相无纺布或复合无纺布也可以用作粘合防止屏障 与传统的针织或膜型粘附防止屏障相比，具有改善的外科手术和手术后粘连的便利性。

    Water-dispersible sheet and cigarette using the same
    3.
    发明授权
    Water-dispersible sheet and cigarette using the same 失效
    水分散片和香烟使用相同

    公开(公告)号：US5849153A

    公开(公告)日：1998-12-15

    申请号：US681995

    申请日：1996-07-30

    申请人： Yoshiaki Ishino ,  Masato Shishikura ,  Toru Tsujimoto ,  Susumu Minamisawa

    发明人： Yoshiaki Ishino ,  Masato Shishikura ,  Toru Tsujimoto ,  Susumu Minamisawa

    IPC分类号： A24D1/04 ,  A24D1/02 ,  A24D3/00 ,  A24D3/06 ,  D21H11/16 ,  D21H11/20 ,  D21H13/04 ,  D21H17/67 ,  D21H19/44 ,  D21H25/00 ,  D21H27/00 ,  D21H21/14

    CPC分类号： A24D3/06 ,  A24D1/02 ,  D21H13/04 ,  D21H17/67 ,  D21H19/44

    摘要： A water-dispersible sheet and a cigarette using the sheet are disclosed. The sheet comprises a water-resolvable base paper made from fibrous raw materials and a water-dispersible coating layer containing water-soluble polymer and an alkaline compound. The sheet is also produced through an impregnation treatment for a water-resolvable base paper with a coating mixture containing water-soluble polymer and an alkaline compound, wherein said water-resolvable base paper is made from a mixture of water-dispersible fibers and fibrous carboxymethyl cellulose acid or fibrous carboxyethyl cellulose acid. The gas-permeability of the water-dispersible sheet is controlled by the water-dispersible coating layer or the impregnation treatment.

    摘要翻译： 公开了一种水分散性片材和使用该片材的香烟。 片材包括由纤维原料制成的水溶性原纸和含有水溶性聚合物和碱性化合物的水分散性涂层。 该片材也通过用水溶性聚合物和碱性化合物的涂布混合物进行水溶性原纸的浸渍处理来制造，其中所述水溶性原纸由水分散性纤维和纤维状羧甲基纤维素的混合物制成 纤维素酸或纤维状羧乙基纤维素酸。 水分散性片材的透气性由水分散性涂层或浸渍处理来控制。

    Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology
    5.
    发明授权
    Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology 有权

    公开(公告)号：US09926665B2

    公开(公告)日：2018-03-27

    申请号：US15067760

    申请日：2016-03-11

    申请人： INTERNATIONAL PAPER COMPANY

    发明人： Mengkui Luo

    IPC分类号： D21C9/00 ,  D21C9/18 ,  D21C9/147 ,  D21H13/04 ,  D21C9/10

    CPC分类号： D21C9/005 ,  C08B15/10 ,  C08H8/00 ,  D21C9/1063 ,  D21C9/147 ,  D21C9/18 ,  D21H13/04

    摘要： A pulp in accordance with a particular embodiment includes crosslinked cellulose fibers. The pulp can have high brightness, reactivity, and intrinsic viscosity. The pulp, therefore, can be well suited for use as a precursor in the production of low-color, high-viscosity cellulose derivatives. A method in accordance with a particular embodiment of the present technology includes forming a pulp from a cellulosic feedstock, bleaching the pulp, crosslinking cellulose fibers within the pulp while the pulp has a high consistency, and drying the pulp. The bleaching process can reduce a lignin content of the pulp to less than or equal to 0.09% by oven-dried weight of the crosslinked cellulose fibers. Crosslinking the cellulose fibers can include exposing the cellulose fibers to a glycidyl ether crosslinker having two or more glycidyl groups and a molecular weight per epoxide within a range from 140 to 175.

    Multi-stage catalytic carboxylation of mercerized cellulose fibers
    6.
    发明授权
    Multi-stage catalytic carboxylation of mercerized cellulose fibers 有权
    丝光纤维素纤维的多阶段催化羧化

    公开(公告)号：US09328459B2

    公开(公告)日：2016-05-03

    申请号：US13853733

    申请日：2013-03-29

    申请人： WEYERHAEUSER NR COMPANY

    发明人： S. Ananda Weerawarna

    IPC分类号： D21H11/20 ,  D21H13/04 ,  D21C9/00 ,  C08B15/04 ,  D06M13/355 ,  D06M13/388 ,  D06M101/06

    CPC分类号： D21C9/005 ,  C08B15/04 ,  D06M13/355 ,  D06M13/388 ,  D06M2101/06 ,  D21H11/20 ,  D21H13/04

    摘要： Carboxylated, mercerized cellulose fiber having at least 12 meq/100 g of carboxyl substitution at the C-6 position of the anhydroglucose units, which includes at least 20% cellulose II, may be produced by catalytically carboxylating mercerized cellulose fiber in at least two catalytic carboxylation stages in a continuous series in which the pH is adjusted, and a primary oxoammonium salt catalyst (or precursor thereof) and secondary oxidant is added, at the beginning of each stage. Optionally, the carboxylated, mercerized cellulose may be made substantially free of aldehyde groups by means of a stabilizing step following the final carboxylation stage, in which aldehyde groups present in the fibers are converted to carboxyl groups.

    摘要翻译： 在包含至少20％纤维素II的脱水葡萄糖单元的C-6位具有至少12meq / 100g羧基取代基的羧化纤维素纤维素纤维可以通过在至少两种催化剂中催化羧化丝光纤维素纤维来制备 在每个阶段开始时，在其中调节pH的连续系列中的羧化阶段和加入初级氧代铵盐催化剂（或其前体）和次级氧化剂。 任选地，羧化的丝光纤维素可以通过在最终羧化阶段之后的稳定步骤基本上不含醛基，其中存在于纤维中的醛基转化成羧基。

    Fiber having increased filament separation and method of making same
    8.
    发明授权
    Fiber having increased filament separation and method of making same 有权
    具有增加的丝分离的纤维及其制造方法

    公开(公告)号：US07346961B2

    公开(公告)日：2008-03-25

    申请号：US10935982

    申请日：2004-09-08

    申请人： Kishio Miwa ,  Eric William Winters

    发明人： Kishio Miwa ,  Eric William Winters

    IPC分类号： D01G1/00

    CPC分类号： D04H1/70 ,  D01G1/04 ,  D04H1/4242 ,  D04H1/4318 ,  D21H13/04 ,  D21H13/50 ,  D21H15/06 ,  Y10T428/23943 ,  Y10T428/29 ,  Y10T428/2904

    摘要： A flock material exhibiting an increased degree of filament separation prepared by cutting a fluoropolymer or carbon fiber yarn into lengths, introducing mechanical energy into the lengths in order to cause the lengths to separate into single-filaments fibers and removing or classifying at least a portion of the single-filament fibers from the lengths in order to obtain a flock having a particular fraction of single-filament, fluoropolymer or carbon fibers.

    摘要翻译： 通过将含氟聚合物或碳纤维纱线切割成长度而制备的增加的丝分离程度的绒头材料，将机械能引入长度以将长度分离成单丝纤维并除去或分类至少一部分 长度的单丝纤维，以获得具有特定部分的单丝，含氟聚合物或碳纤维的羊群。