知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

222 records (took 0.019 seconds)

    Cross-linked cellulosic fibers
    1.
    发明授权
    Cross-linked cellulosic fibers 有权

    公开(公告)号：US12000066B2

    公开(公告)日：2024-06-04

    申请号：US16982824

    申请日：2018-03-29

    Applicant: Kimberly-Clark Worldwide, Inc.

    Inventor： Michael Andrew Zawadzki ,  Stephen Michael Lindsay

    IPC: D01D5/38 ,  C08B15/10 ,  D01D5/22 ,  D06L4/13 ,  D21H11/18 ,  D21H11/20

    CPC classification number: D01D5/38 ,  C08B15/10 ,  D01D5/22 ,  D06L4/13 ,  D21H11/18 ,  D21H11/20

    Abstract: Disclosed are processes for manufacturing cross-linked cellulosic fibers and tissue products comprising cross-linked cellulosic fibers, manufactured by reacting an oxidized polyol, in particular, an oxidized sugar having at least two aldehyde groups with a plurality of cellulosic fibers to yield treated fibers and heating the treated fibers at a temperature greater than about 140° C. to cure the treated fibers. In particular, said sugar is sucrose and the oxidising agent comprises hydrogen peroxide. The instant cross-linked fibers are manufactured without well-known cross-linking agents such as formaldehyde or polycarboxylic acids, and have good brightness and color and resist yellowing. Furthermore, the cross-linked cellulosic fibers are generally free from off odors and the instant cross-linked cellulosic fibers have enhanced properties, such as improved wet bulk, compared to uncross-linked fibers.

    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：US10829892B2

    公开(公告)日：2020-11-10

    申请号：US16570086

    申请日：2019-09-13

    Applicant: INTERNATIONAL PAPER COMPANY

    Inventor： Mengkui Luo

    IPC: D21H11/04 ,  C08B15/10 ,  D21H13/04 ,  D21C9/00 ,  D21C9/10 ,  D21C9/147 ,  D21C9/18 ,  C08L97/02 ,  D21H11/14 ,  C08H8/00

    Abstract: 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.

    REGENERATED CELLULOSIC FIBRES SPUN FROM AN AQUEOUS ALKALINE SPINDOPE
    7.
    发明申请
    REGENERATED CELLULOSIC FIBRES SPUN FROM AN AQUEOUS ALKALINE SPINDOPE 审中-公开

    公开(公告)号：US20200299416A1

    公开(公告)日：2020-09-24

    申请号：US16492612

    申请日：2018-03-15

    Applicant: TREETOTEXTILE AB

    Inventor： Lars STIGSSON

    IPC: C08B16/00 ,  C08B15/10 ,  D01F2/24 ,  D01F2/02

    Abstract: The present invention is directed to a cellulosic fibre composition comprising regenerated cellulose and one or more additives, wherein a) the cellulosic fibre composition is produced by injecting an aqueous alkaline spindope solution or suspension comprising dissolved cellulose in a concentration from about 5% to about 12% by weight of spindope and at least one of an additive and a nano-sized structured particulate filler through a nozzle into an alkaline coagulation bath forming cellulosic filaments; and b) stretching or washing cellulosic filaments from a) in one or more stretching and washing baths forming a regenerated cellulosic fibre.

    Process to prepare crosslinked cellulose ethers, crosslinked cellulose ethers obtainable by such process and the use thereof
    10.
    发明授权
    Process to prepare crosslinked cellulose ethers, crosslinked cellulose ethers obtainable by such process and the use thereof 有权

    公开(公告)号：US09914786B2

    公开(公告)日：2018-03-13

    申请号：US14795314

    申请日：2015-07-09

    Applicant: AKZO NOBEL N.V.

    Inventor： Paulus Pieter De Wit

    IPC: C08B15/05 ,  C08B15/10 ,  C08B31/00 ,  C08B15/00 ,  C08B5/00

    CPC classification number: C08B15/005 ,  C08B5/00

    Abstract: The invention relates to a dry or slurry process to prepare phosphate-crosslinked cellulose ethers from a cellulose starting material comprising the steps of adding an alkalizing agent to the cellulose starting material to achieve mercerization, adding an ethehfying agent to the reaction mixture to achieve etherification of the cellulose, and adding a crosslinking agent to the reaction mixture to achieve crosslinking of the cellulose, wherein at least part of the alkalizing agent is added to the cellulose starting material before the etherification and/or crosslinking reactions take place to obtain alkalized cellulose; the crosslinking agent and the etherifying agent are added one after the other in random order or simultaneously; the crosslinking agent is an alkali metal thmetaphosphate; and the crosslinking and etherification steps are performed at an elevated temperature. Additionally, the invention relates to crosslinked cellulose ethers obtainable by the above process having a viscosity and/or water absorption capacity higher than their non-crosslinked equivalents and the use thereof.

Patent Agency Ranking