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公开(公告)号：EP1149200A1
公开(公告)日：2001-10-31
申请号：EP00902441.5
申请日：2000-01-18
申请人： WEYERHAEUSER COMPANY
IPC分类号： D21C9/00 , D21H17/06 , D06M13/123 , D06M15/423
CPC分类号： 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
摘要： 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.
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72.发明公开METHOD AND COMPOSITION FOR INCREASING THE STRENGTH OF COMPOSITIONS CONTAINING HIGH-BULK FIBERS 失效方法和组合物用于增加组合物高松纤维的强度
公开(公告)号：EP0946810A1
公开(公告)日：1999-10-06
申请号：EP97951649.0
申请日：1997-12-11
申请人： WEYERHAEUSER COMPANY
发明人： WESTLAND, John, A.
CPC分类号： D06M13/192 , D06M13/432 , D06M15/263 , D06M2101/06 , D21C9/005 , D21H11/20 , Y10T428/2907 , Y10T428/2915 , Y10T428/292 , Y10T442/2369 , Y10T442/2377 , Y10T442/2393
摘要： Cross-linked cellulose fibers having free pendant carboxylic acid groups are disclosed. The fibers include a polycarboxylic acid covalently coupled to the fibers, and are cross-linked with a cross-linking agent having a cure temperature lower than the cure temperature of the polycarboxylic acid. Methods for producing the fibers and for producing a fibrous sheet incorporating the fibers are also disclosed.
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公开(公告)号：EP0944375A1
公开(公告)日：1999-09-29
申请号：EP97950857.0
申请日：1997-12-05
申请人： WEYERHAEUSER COMPANY
发明人： GRAEF, Peter, A. , ELSTON, Colin , BUNKER, Daniel, T. , HOWARD, Fred, B. , MATHEWS, Jeffrey, D. , NAIENI, Shahrokh, A.
IPC分类号： A61F13 , A61F5 , B32B5 , B32B27 , D04H1 , D04H13 , D21F11 , D21H11 , D21H15 , D21H27 , D21H13
CPC分类号： A61F13/53 , A61F13/531 , A61F13/534 , A61F13/53747 , A61F2013/15406 , A61F2013/15422 , A61F2013/15447 , A61F2013/530051 , B32B5/18 , B32B27/04 , D04H1/54 , D04H1/60 , D04H1/732 , D21F11/04 , D21F11/14 , D21H11/20 , D21H13/08 , D21H13/14 , D21H13/24 , D21H13/26 , D21H15/10
摘要： A unitary absorbent layer composed of cross-linked cellulosic fibers and a binder is disclosed. In a preferred embodiment, the binder is a bicomponent binding fiber. In combination with one or more other layers in an absorbent article, the unitary absorbent layer can rapidly acquire, distribute, temporarily store, and then release the acquired liquid to other liquid retention layers. Methods for forming the unitary absorbent layer are also disclosed.
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公开(公告)号：EP0899377A3
公开(公告)日：1999-09-01
申请号：EP98120049.6
申请日：1995-03-20
申请人： WEYERHAEUSER COMPANY
CPC分类号： D21H17/28 , A61L15/24 , A61L15/28 , C08B15/10 , C08L1/08 , D21C9/005 , D21H11/20 , D21H17/07 , D21H17/15 , C08L35/00 , C08L1/00 , C08L2666/02
摘要： Individualized, chemically crosslinked high-bulk cellulosic fibers comprising cellulosic fibers chemically intra-fiber crosslinked with a polycarboxylic acid crosslinking agent selected from the group consisting of poly(acrylic acid), poly(methacrylic acid), poly(maleic acid), poly (methylvinylether-co-maleate) copolymer, poly (methylvinylether-co-itaconate) copolymer and mixtures thereof optionally further comprising the addition of one or more crosslinking agents selected from citric acid, tartaric acid, malic acid, succinic acid, glutaric acid, citraconic acid, maleic acid, itaconic acid, tartrate monosuccinic acid and mixtures thereof. A method of making individualized chemically intra-fiber crosslinked high-bulk fibers comprises applying a polycarboxylic acid crosslinking agent to a mat of cellulosic fibers, separating the mat into substantially unbroken individualized fibers and curing the crosslinking agent to form intra-fiber crosslinks.
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公开(公告)号：EP0618329B1
公开(公告)日：1999-08-11
申请号：EP94105044.5
申请日：1994-03-30
申请人： KAO CORPORATION
CPC分类号： D21H27/38 , A61F13/15634 , A61L15/28 , D21H11/20 , D21H27/30 , Y10S428/903 , Y10S428/913 , Y10T428/13 , Y10T428/24446 , Y10T428/24463 , Y10T428/2973 , Y10T442/609 , Y10T442/619 , Y10T442/621 , Y10T442/668 , Y10T442/693 , C08L1/02
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76.发明公开PAPER AND PAPER-LIKE PRODUCTS INCLUDING WATER INSOLUBLE FIBROUS CARBOXYALKYL CELLULOSE 失效造纸及纸制品含水KARBOXYALKYLCELLULOSEFASER
公开(公告)号：EP0858528A1
公开(公告)日：1998-08-19
申请号：EP96937843.0
申请日：1996-10-29
申请人： WEYERHAEUSER COMPANY
摘要： The invention relates to paper and similar products made with at least a portion of the papermaking furnish being essentially water insoluble carboxyethyl cellulose fibers. A cationic additive material, such as a polyamide epichlorohydrin wet strength resin or cationic starch, is also required. From 2-100 % of the modified fiber is used in conjunction with a usual papermaking fiber. The D.S. of the carboxyethylated fiber is in the range of about 0.01-0.3, preferably about 0.025-0.10. A notable feature of paper products made with the fiber/cationic additive system is an improved ratio of wet to dry tensile and burst strengths compared with sheets made from unmodified fiber.
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77.发明授权FIBERS AND PULPS FOR PAPERMAKING BASED ON CHEMICAL COMBINATION OF POLY(ACRYLATE-CO-ITACONATE), POLYOL AND CELLULOSIC FIBER 失效纤维和纸浆生产纸张由聚（丙烯酸酯 - CO - 衣康酸酯），多元醇与纸浆纤维的化学组成。
公开(公告)号：EP0507812B1
公开(公告)日：1995-08-09
申请号：EP91901450.6
申请日：1990-12-20
CPC分类号： A61F13/534 , A61L15/28 , D21H11/20 , Y10T428/2904 , Y10T428/2907 , Y10T428/2913 , Y10T428/2933 , Y10T428/2964 , Y10T428/2965 , Y10T442/603 , Y10T442/696 , C08L1/08
摘要： Disclosed is a fiber comprising, chemically bonded together, (a) a conventional cellulosic fiber, such as a kraft fiber or a chemithermomechanical pulp fiber; (b) poly(acrylate-co-itaconate) copolymer, such as the acid form of a poly(acrylate-co-itaconate) copolymer comprising 90-95 mole% acrylate and 5-10 mole% itaconate having weight average molecular weight of about 600,000-900,000; and (c) a polyol, such as polyethylene glycol; also disclosed are methods for making such fibers, especially evaporatively depositing an intimate mixture of the copolymer and polyol on the fiber followed by thermally crosslinking at specific temperatures for limited periods; absorbent paper which can be made by wet-laying the fiber, especially in admixture with conventional fiber; and derivative paper structures, such as multi-ply disposable absorbent towels.
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公开(公告)号：EP0656969A1
公开(公告)日：1995-06-14
申请号：EP93916799.0
申请日：1993-06-25
申请人： WEYERHAEUSER COMPANY
CPC分类号： D21H21/06 , A61F2013/530007 , A61F2013/530474 , D21H11/20 , D21H17/06 , D21H17/07 , D21H17/09 , D21H17/10 , D21H17/15 , D21H21/14 , D21H21/24 , D21H23/14 , D21H23/18 , D21H23/28
摘要： The invention is a method of making a wet formed, sheeted, readily reslurriable sheeted crosslinked cellulose and the products made by the method. Crosslinked wood pulp fibers tend to be quite brittle. If crosslinked while in sheeted form, the sheets cannot be readily defibred, either in a wet or dry state, without serious fiber degradation. The sheet products of the present invention can be easily redispersed or repulped in water without significant fiber breakage. The present products are made by including within the sheet, while still in wet form, a debonding or softening agent which is preferably added before the latent crosslinking reactant. Most preferably the debonder is added prior to the headbox of a paper machine and the crosslinking reactant is applied near theend of the forming wire or at the press section. The treated sheet is dried conventionally. Crosslinking may occur entirely during drying or during a period of additional heating, usually at a temperature in excess of 100 °C for a short period of time. Conventional debonding agents and crosslinking reactants are suitable. The softening agent apparently reduces or prevents adhesive bonding between adjacent fibers caused by polymer formation external to the fibers under reaction conditions.
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79.发明公开Absorbent paper comprising polymer-modified fibrous pulps and wet-laying process for the production thereof 失效包含聚合物改性纤维素浆的吸收纸和其生产的湿布工艺
公开(公告)号：EP0408128A3
公开(公告)日：1993-07-07
申请号：EP90201814.2
申请日：1990-07-06
摘要： Processes are described for making highly absorbent tissues and towels by wet-laying pulps comprising particular polycarboxylate polymer-modified fibrous pulps such as mildly hydrolyzed methyl acrylate-grafted softwood kraft pulps; these pulps have distinct protonated and alkall-metal-cation-exchanged states. The wet-laying processes are adapted to exploit the very different behavior of the polymer-modified fibrous pulps in function of the two states. The preferred wet-laying processes described herein are continuous processes embodying one or more on-line chemical treatment steps which chemically switch state of the polymer-modified fibrous pulp component in a wet web on the papermaking machine to improve the processing thereof by averting or minimizing tendencies to mechanically or thermally degrade.
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80.发明公开CELLULOSE FIBER MODIFIED WITH POLY(METHYL VINYL ETHER-CO-MALEATE) AND POLYOL 失效与聚（甲基乙烯基醚 - 马来酸）和多元醇改性的纤维素纤维。
公开(公告)号：EP0507875A1
公开(公告)日：1992-10-14
申请号：EP91903094.0
申请日：1990-12-20
CPC分类号： D21H11/20 , A61L15/28 , Y10T428/2938 , C08L1/08
摘要： Fibre comprenant, liés chimiquement, (a) une fibre de cellulose classique, telle qu'une fibre kraft ou une fibre de pâte chimiothermomécanique; (b) un copolymère de poly(méthyle vinyle éther-co-maléate) tel que la forme acide du copolymère de poly(méthyle vinyle éther-co-maléate) 1:1 (molarité), ayant de préférence un poids moléculaire de nombre moyen d'environ 67 000-80 000; et (c) un polyol, tel que le polyéthylène glycol. Sont également décrits des procédés de production de telles fibres, en particulier par déposition par évaporation d'un mélange intime du copolymère et du polyol sur la fibre, déposition qui est suivie par réticulation thermique à des températures spécifiques pendant des périodes limitées; elle concerne également du papier absorbant qui peut être fabriqué en posant la fibre en couche mouillée, en particulier melangée à des fibres classiques; l'invention concerne également des structures dérivées du papier telles que des serviettes absorbantes multicouches jetables.
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