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    Method of making carboxylated cellulose fibers and products of the method
    21.
    发明授权
    Method of making carboxylated cellulose fibers and products of the method 有权
    制备羧化纤维素纤维及其制法的方法

    公开(公告)号：US06379494B1

    公开(公告)日：2002-04-30

    申请号：US09418909

    申请日：1999-10-15

    Applicant: Richard A. Jewell ,  Joseph Lincoln Komen ,  Yong Li ,  Bing Su

    Inventor： Richard A. Jewell ,  Joseph Lincoln Komen ,  Yong Li ,  Bing Su

    IPC: D21H1120

    CPC classification number: D06M13/388 ,  C08B15/04 ,  D21C9/004 ,  D21C9/005 ,  D21H11/20

    Abstract: The invention is directed to a method of making carboxylated cellulose fibers whose fiber strength and degree of polymerization is not significantly sacrificed. The method involves the use of TEMPO (2,2,6,6-tetramethylpiperidinyloxy free radical) as a primary oxidant and a hypohalite salt as a secondary oxidant in an aqueous environment. Preferably the oxidized cellulose is then stabilized against D.P. loss in alkaline environments and color reversion with a reducing agent such as sodium borohydride. Alternatively it may be treated with an oxidant such as sodium chlorite. The method results in a high percentage of carboxyl groups located at the fiber surface. The product is especially useful as a papermaking fiber where it contributes strength and has a higher attraction for cationic additives. The product is also useful as an additive to recycled fiber to increase strength. The method can be used to improve properties of either virgin or recycled fiber. It does not require high &agr;-cellulose fiber but is suitable for regular market pulps.

    Abstract translation: 本发明涉及一种制备纤维强度和聚合度不被显着牺牲的羧化纤维素纤维的方法。 该方法包括在水性环境中使用TEMPO（2,2,6,6-四甲基哌啶氧基自由基）作为主要氧化剂和次卤酸盐作为次级氧化剂。 优选地，氧化的纤维素然后对抗D.P. 碱性环境下的损失和还原剂如硼氢化钠的颜色反转。 或者也可以用氧化剂如亚氯酸钠处理。 该方法导致位于纤维表面的羧基的高百分比。 该产品作为造纸纤维特别有用，其中它提供强度并且对阳离子添加剂具有更高的吸引力。 该产品还可用作再生纤维的添加剂以增加强度。 该方法可用于改善原始纤维或再生纤维的性能。 它不需要高的α-纤维素纤维，但适用于常规市场纸浆。

    Hypochlorite free method for preparation of stable carboxylated carbohydrate products
    24.
    发明授权
    Hypochlorite free method for preparation of stable carboxylated carbohydrate products 有权

    公开(公告)号：US07109325B2

    公开(公告)日：2006-09-19

    申请号：US10856235

    申请日：2004-08-30

    Applicant: Joseph Lincoln Komen ,  S. Ananda Weerawarna ,  Richard A. Jewell

    Inventor： Joseph Lincoln Komen ,  S. Ananda Weerawarna ,  Richard A. Jewell

    IPC: C07H1/00 ,  C08B3/00 ,  C08B31/00 ,  C08B33/08 ,  C08B35/08

    CPC classification number: D21C9/005 ,  C08B15/04 ,  C08B31/18 ,  D21H11/14 ,  D21H11/20

    Abstract: A method of making a carboxylated carbohydrate is disclosed, cellulose being a preferred carbohydrate material. Carboxylated cellulose fibers can be produced whose fiber strength and degree of polymerization is not significantly sacrificed. The method involves the use of a catalytic amount of a hindered cyclic oxammonium compounds as a primary oxidant and chlorine dioxide as a secondary oxidant in an aqueous environment. The oxammonium compounds may be formed in situ from their corresponding amine, hydroxylamine, or nitroxyl compounds. The oxidized cellulose may be stabilized against D.P. loss and color reversion by further treatment with an oxidant such as sodium chlorite or a chlorine dioxide/hydrogen peroxide mixture. Alternatively it may be treated with a reducing agent such as sodium borohydride. In the case of cellulose the method results in a high percentage of carboxyl groups located at the fiber surface. The product is especially useful as a papermaking fiber where it contributes strength and has a higher attraction for cationic additives. The product is also useful as an additive to recycled fiber to increase strength. The method can be used to improve properties of either virgin or recycled fiber. It does not require high α-cellulose fiber but is suitable for regular market pulps.

    Hypochlorite free method for preparation of stable carboxylated carbohydrate products
    26.
    发明授权
    Hypochlorite free method for preparation of stable carboxylated carbohydrate products 有权
    不含次氯酸盐的方法制备稳定的羧化碳水化合物产品

    公开(公告)号：US06919447B2

    公开(公告)日：2005-07-19

    申请号：US09875177

    申请日：2001-06-06

    Applicant: Joseph Lincoln Komen ,  S. Ananda Weerawarna ,  Richard A. Jewell

    Inventor： Joseph Lincoln Komen ,  S. Ananda Weerawarna ,  Richard A. Jewell

    IPC: C07B61/00 ,  C08B15/04 ,  C08B31/18 ,  D21C9/00 ,  D21H11/14 ,  D21H11/20 ,  C07H1/00 ,  C08B3/00 ,  C08B31/00 ,  C08B33/08 ,  C08B35/08

    CPC classification number: D21C9/005 ,  C08B15/04 ,  C08B31/18 ,  D21H11/14 ,  D21H11/20

    Abstract: A method of making a carboxylated carbohydrate is disclosed, cellulose being a preferred carbohydrate material. Carboxylated cellulose fibers can be produced whose fiber strength and degree of polymerization is not significantly sacrificed. The method involves the use of a catalytic amount of a hindered cyclic oxammonium compounds as a primary oxidant and chlorine dioxide as a secondary oxidant in an aqueous environment. The oxammonium compounds may be formed in situ from their corresponding amine, hydroxylamine, or nitroxyl compounds. The oxidized cellulose may be stabilized against D.P. loss and color reversion by further treatment with an oxidant such as sodium chlorite or a chlorine dioxide/hydrogen peroxide mixture. Alternatively it may be treated with a reducing agent such as sodium borohydride. In the case of cellulose the method results in a high percentage of carboxyl groups located at the fiber surface. The product is especially useful as a papermaking fiber where it contributes strength and has a higher attraction for cationic additives. The product is also useful as an additive to recycled fiber to increase strength. The method can be used to improve properties of either virgin or recycled fiber. It does not require high α-cellulose fiber but is suitable for regular market pulps.

    Abstract translation: 公开了制备羧化碳水化合物的方法，纤维素是优选的碳水化合物材料。 可以制造其纤维强度和聚合度不被显着牺牲的羧化纤维素纤维。 该方法涉及在含水环境中使用催化量的受阻环氧化铵化合物作为主要氧化剂和二氧化氯作为次级氧化剂。 氧化铵化合物可以从其相应的胺，羟胺或硝酰基化合物原位形成。 氧化的纤维素可以对抗D.P.稳定。 通过用氧化剂如亚氯酸钠或二氧化氯/过氧化氢混合物进一步处理而损失和回色。 或者也可以用还原剂如硼氢化钠处理。 在纤维素的情况下，该方法导致位于纤维表面的羧基的高百分比。 该产品作为造纸纤维特别有用，其中它提供强度并且对阳离子添加剂具有更高的吸引力。 该产品还可用作再生纤维的添加剂以增加强度。 该方法可用于改善原始纤维或再生纤维的性能。 它不需要高的α-纤维素纤维，但适用于常规市场纸浆。

    Multi-ply cellulosic products using high-bulk cellulosic fibers
    27.
    发明授权
    Multi-ply cellulosic products using high-bulk cellulosic fibers 有权
    使用大体积纤维素纤维的多层纤维素产品

    公开(公告)号：US06736933B2

    公开(公告)日：2004-05-18

    申请号：US10429068

    申请日：2003-05-02

    Applicant: Richard A. Jewell ,  Amar N. Neogi

    Inventor： Richard A. Jewell ,  Amar N. Neogi

    IPC: D21H1120

    CPC classification number: D21H17/07 ,  D21H11/20 ,  D21H17/15 ,  D21H17/28 ,  D21H27/38 ,  Y10T428/2965

    Abstract: A multi-ply paperboard comprising at least one ply of conventional cellulose fibers and from about 0.1 to about 6 weight percent of a water-borne binding agent; and at least one ply of chemically intrafiber crosslinked cellulosic high-bulk fibers and from about 0.1 to about 6 weight percent of a water-borne binding agent. The water-borne binding agent may be a starch, a modified starch, a polyvinyl alcohol, a polyvinyl acetate, a polyethylene/acrylic acid copolymer, an acrylic acid polymer, a polyacrylate, a polyacrylamide, a polyamine, guar gum, an oxidized polyethylene, a polyvinyl chloride, a polyvinyl chloride/acrylic acid copolymer, an acrylonitrile/butadiene/styrene copolymer or polyacrylonitrile. A method for making the paperboard is disclosed.

    Abstract translation: 包含至少一层常规纤维素纤维和约0.1至约6重量％水性粘合剂的多层纸板; 和至少一层化学纤维内交联的纤维素高松散纤维和约0.1至约6重量％的水性粘合剂。 水性粘合剂可以是淀粉，改性淀粉，聚乙烯醇，聚乙酸乙烯酯，聚乙烯/丙烯酸共聚物，丙烯酸聚合物，聚丙烯酸酯，聚丙烯酰胺，多胺，瓜尔胶，氧化聚乙烯 ，聚氯乙烯，聚氯乙烯/丙烯酸共聚物，丙烯腈/丁二烯/苯乙烯共聚物或聚丙烯腈。 公开了制造纸板的方法。

    High-wet-bulk cellulosic fibers
    28.
    发明授权
    High-wet-bulk cellulosic fibers 失效
    高湿松散纤维素纤维

    公开(公告)号：US06703125B2

    公开(公告)日：2004-03-09

    申请号：US10342513

    申请日：2003-01-15

    Applicant: Richard A. Jewell ,  John A. Westland

    Inventor： Richard A. Jewell ,  John A. Westland

    IPC: D02G300

    CPC classification number: D21H11/20 ,  D06M13/123 ,  D06M13/207 ,  D06M15/423 ,  D06M2101/06 ,  D06M2200/00 ,  D21H17/06 ,  Y10T428/249924 ,  Y10T428/2913 ,  Y10T428/2915 ,  Y10T428/2933 ,  Y10T428/2965 ,  Y10T442/2484 ,  Y10T442/277 ,  Y10T442/696

    Abstract: The present invention provides cellulosic fibers having high wet bulk and methods for their preparation. In one embodiment, the invention provides cellulosic fibers catalytically crosslinked with glyoxal and, optionally, a glycol. In another embodiment, cellulosic fibers are crosslinked with a combination of glyoxal and a glyoxal-derived resin selected from the group consisting of a glyoxal/polyol condensate, a cyclic urea/glyoxal/polyol condensate, a cyclic urea/glyoxal condensate, and mixtures thereof.

    Abstract translation: 本发明提供具有高湿体积的纤维素纤维及其制备方法。 在一个实施方案中，本发明提供了用乙二醛和任选的二醇催化交联的纤维素纤维。 在另一个实施方案中，纤维素纤维与乙二醛和乙二醛衍生的树脂的组合交联，所述乙二醛和乙二醛衍生的树脂选自乙二醛/多元醇缩合物，环状脲/乙二醛/多元醇缩合物，环状脲/乙二醛缩合物及其混合物 。

    Method of increasing the wet strength of a fibrous sheet
    30.
    发明授权
    Method of increasing the wet strength of a fibrous sheet 失效
    增加纤维片的湿强度的方法

    公开(公告)号：US06579415B2

    公开(公告)日：2003-06-17

    申请号：US10260876

    申请日：2002-09-27

    Applicant: Richard A. Jewell

    Inventor： Richard A. Jewell

    IPC: D21C900

    CPC classification number: D21H11/20 ,  D06M13/192 ,  D06M15/263 ,  D21C9/005

    Abstract: Carboxylated cellulosic fibers are disclosed. The fibers include a polycarboxylic acid covalently coupled to the fibers. Methods for producing the fibers and for producing fibrous products that incorporate the fibers are also disclosed.

    Abstract translation: 公开了羧化纤维素纤维。 纤维包括与纤维共价偶联的多元羧酸。 还公开了用于生产纤维和用于生产包含纤维的纤维制品的方法。

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