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    ABSORBENT MATERIAL
    1.
    发明申请
    ABSORBENT MATERIAL 审中-公开
    吸收材料

    公开(公告)号：US20160114074A1

    公开(公告)日：2016-04-28

    申请号：US14941906

    申请日：2015-11-16

    申请人： STEPHEN LAW

    发明人： STEPHEN LAW

    IPC分类号： A61L15/60 ,  D04H1/46 ,  A61L15/28

    CPC分类号： A61L15/60 ,  A61L15/28 ,  C08B11/04 ,  C08B11/10 ,  C08B37/003 ,  C08B37/0084 ,  C08L1/28 ,  C08L1/286 ,  C08L5/04 ,  C08L5/08 ,  C08L2205/16 ,  D04H1/42 ,  D04H1/425 ,  D04H1/4258 ,  D04H1/4291 ,  D04H1/4382 ,  D04H1/46 ,  D04H1/736 ,  Y10T428/249921 ,  C08L2666/06

    摘要： This invention relates to absorbent materials useful in the manufacture of absorbent articles, in particular dressings for the advanced wound care market. The absorbent materials of the present invention are sulfonated polysaccharides, particularly water-insoluble cellulose alkyl sulfonates in which the cellulose is substituted by one type of alkyl sulfonate group. The invention also provides a process for the manufacture of such materials. The preferred cellulose alkyl sulfonate described herein is cellulose ethyl sulfonate. Reinforcing fibers and/or antimicrobial agents are optionally applied to the cellulose alkyl sulfonate.

    摘要翻译： 本发明涉及可用于制造吸收制品的吸收材料，特别是用于先进伤口护理市场的敷料。 本发明的吸收材料是磺化多糖，特别是其中纤维素被一种烷基磺酸盐基团取代的水不溶性纤维素烷基磺酸盐。 本发明还提供了制造这种材料的方法。 本文所述的优选的烷基磺酸纤维素是纤维素乙基磺酸盐。 增强纤维和/或抗微生物剂任选地加到纤维素烷基磺酸盐上。

    Cellulose ethers and method of preparing the same
    3.
    发明授权
    Cellulose ethers and method of preparing the same 有权

    公开(公告)号：US07022837B2

    公开(公告)日：2006-04-04

    申请号：US10002399

    申请日：2001-10-31

    申请人： Roger Bruce Harding ,  Susan L. H. Crenshaw ,  Paul Eugene Gregory ,  Denise Hartnett Broughton

    发明人： Roger Bruce Harding ,  Susan L. H. Crenshaw ,  Paul Eugene Gregory ,  Denise Hartnett Broughton

    IPC分类号： C08B11/08

    CPC分类号： C08B11/04 ,  C08B1/06 ,  C08B1/08 ,  C08B11/00 ,  C08B11/12

    摘要： The present inventors have discovered that the solution rheology of cellulose ethers prepared from cellulose pulp is altered by mercerizing and recovering cellulose pulp before preparing the cellulose ethers. For example, the solution viscosity of carboxymethyl cellulose (CMC) produced from mercerized and recovered cellulose pulp is significantly greater than that produced from non-mercerized cellulose pulp. The present invention provides a method of preparing cellulose ethers comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) converting the mercerized and recovered cellulose pulp into the cellulose ethers. According to one embodiment, the cellulose pulp is southern softwood kraft and the mercerized cellulose pulp has a TAPPI 230 om-89 viscosity of at most 12 cP. This method, however, may be applied to all cellulose pulps, regardless of their viscosities, including those which, when mercerized, have a viscosity greater than 12 cP. The mercerized cellulose pulp is typically substantially free of cellulose III. Mercerized cellulose pulp prepared by this method has a greater percentage of crystalline cellulose II and a smaller crystalline area than that of non-mercerized cellulose pulp. The present invention also provides a method of preparing a cellulose floc comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) treating the mercerized pulp to form the cellulose floc. Alternatively, the method comprises mercerizing and recovering a cellulose floc. Cellulose floc prepared by this method have a greater bulk density than cellulose floc prepared from similar non-mercerized cellulose pulp. Furthermore, the bulk density gain is greater than that expected from the coarseness (weight per unit of fiber length) gain from preparing a cellulose floc.

    Novel cellulose derivative, process for preparing the same and sulfur dioxide gas permselective membrane comprising the same
    4.
    发明授权
    Novel cellulose derivative, process for preparing the same and sulfur dioxide gas permselective membrane comprising the same 失效
    新型纤维素衍生物，其制备方法和包含其的二氧化硫气体选择性膜

    公开(公告)号：US4694077A

    公开(公告)日：1987-09-15

    申请号：US902625

    申请日：1986-09-02

    申请人： Kiyokazu Imai ,  Tomoo Shiomi ,  Yasuyuki Tezuka

    发明人： Kiyokazu Imai ,  Tomoo Shiomi ,  Yasuyuki Tezuka

    IPC分类号： B01D71/22 ,  C08B11/04

    CPC分类号： B01D71/22 ,  C08B11/04

    摘要： Novel cellulose derivative, process for preparing the same and sulfur dioxide gas permselective membrane comprising said derivative.Hydrocarbysulfinylethyl cellulose represented by the formula (I): ##STR1## wherein, X may be the same or different and represents hydrogen atom or hydrocarbylsulfinylethyl group represented by the formula (II): ##STR2## wherein, R may be the same or different and represents an alkyl group having 1 to 6 carbon atoms or a phenyl group,with the average substitution degree with the hydrocarbylsulfinylethyl group of the formula (II) per glucose unit being at least 0.05, and sulfur dioxide gas permeation membrane comprising said cellulose derivative. This membrane is excellent in sulfur dioxide gas permselectivity.

    摘要翻译： 新型纤维素衍生物，其制备方法和包含所述衍生物的二氧化硫气体选择性膜。 由式（I）表示的烃基亚磺酰基乙基纤维素：其中X可以相同或不同，表示氢原子或由式（II）表示的烃基亚磺酰基乙基：其中，R可以 相同或不同，代表具有1至6个碳原子的烷基或苯基，每个葡萄糖单元的式（II）的烃基亚硫酰基乙基的平均取代度至少为0.05，二氧化硫气体渗透膜 包括所述纤维素衍生物。 该膜具有优异的二氧化硫气体选择性。

    Cellulose ethers and cellulose mixed ethers having at least one phosphorus-containing substituent, and process for their manufacture
    5.
    发明授权
    Cellulose ethers and cellulose mixed ethers having at least one phosphorus-containing substituent, and process for their manufacture 失效
    具有至少一个含磷取代基的纤维素醚和纤维素混合醚及其制造方法

    公开(公告)号：US4413121A

    公开(公告)日：1983-11-01

    申请号：US363148

    申请日：1982-03-29

    申请人： Lothar Brandt ,  Arno Holst ,  Hans-Jerg Kleiner

    发明人： Lothar Brandt ,  Arno Holst ,  Hans-Jerg Kleiner

    IPC分类号： C08B11/04 ,  C08B11/10 ,  C08B11/193 ,  C08B11/145

    CPC分类号： C08B11/10 ,  C08B11/04 ,  C08B11/193

    摘要： Disclosed is a cellulose ether having at least one phosphorus-containing substituent or a mixed ether of said cellulose ether having in addition at least one phosphorus-free substituent comprising alkyl, hydroxyalkyl, carboxyalkyl, sulfonoalkyl, aminoalkyl, or diaminoalkyl, wherein the phosphorus-containing substituent(s) comprise(s) groups of the formula ##STR1## wherein R.sup.1 and R.sup.2 are OX; or R.sup.1 is OX and R.sup.2 is OY; or R.sup.1 is OX and R.sup.2 is (CH.sub.2).sub.n --CH.sub.3 ; or R.sup.1 and R.sup.2 are (CH.sub.2).sub.n --CH.sub.3 ; or R.sup.1 is (CH.sub.2).sub.n --CH.sub.3 and R.sup.2 is (CH.sub.2).sub.p --CH.sub.3, whereinX,Y are identical or different and comprise a hydrogen atom or a monovalent cation;m is an integer from 1 to 4; andn,p are identical or different and are 0 or 1; with the proviso that when m is 1 or 2, R.sup.1 and R.sup.2 may not be OX and R.sup.1 and R.sup.2 may not be OX and OY, respectively. Also disclosed is a process for producing these cellulose ether products.

    摘要翻译： 公开了具有至少一个含磷取代基的纤维素醚或所述纤维素醚的混合醚，另外还含有至少一个含有烷基，羟基烷基，羧基烷基，磺基烷基，氨基烷基或二氨基烷基的无磷取代基，其中含磷 取代基包含式（I）的基团，其中R 1和R 2是OX; 或R1是OX，R2是OY; 或R1是OX，R2是（CH2）n-CH3; 或R 1和R 2为（CH 2）n -CH 3; 或R 1为（CH 2）n -CH 3，且R 2为（CH 2）p -CH 3，其中X，Y相同或不同，并包含氢原子或一价阳离子; m是1至4的整数; 且n，p相同或不同，为0或1; 条件是当m为1或2时，R 1和R 2可以不是O X，并且R 1和R 2可以不分别为O X和O Y。 还公开了生产这些纤维素醚产物的方法。