Esterifying, Etherifying Or Immunizing Patents (Class 8/120)
  • Patent number: 10550511
    Abstract: Antimicrobial cellulose fibers and antimicrobial cellulose fabrics are provided herein. Such an antimicrobial fiber can include a reactive antimicrobial compound comprising an antimicrobial agent that reacted with at least one reactive compound, and wherein the reactive antimicrobial compound is chemically fixed to a cellulose fiber.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: February 4, 2020
    Assignee: G.CLO INC.
    Inventors: Tae-Won Son, Hyung-Jin Son, Chang-Mok Son
  • Patent number: 10533060
    Abstract: The present invention provides a dispersion liquid of anion-modified cellulose nanofibers and a composition of anion-modified cellulose nanofibers that are not colored when heated. Specifically, the dispersion liquid contains anion-modified cellulose nanofibers; an anti-coloring agent selected from the group consisting of borate salts and sulfite salts, or combinations thereof in an amount of 1 to 30 mass % based on an absolute dry mass of the anion-modified cellulose nanofibers; and a solvent.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: January 14, 2020
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Satoshi Takaichi, Takeshi Nakayama, Shinji Sato
  • Patent number: 9700040
    Abstract: The invention relates to polymeric systems for stabilizing, storing and delivering hypohalide salts. One system consists of material coated with two layers: one prepared from polyethylene glycol epoxide and melamine solution and second prepared from inorganic hypohalide salt solution. The material can be fabric, cotton, bamboo, cellulosic materials, blend of cellulosic and synthetic fibers. Antimicrobial materials comprising this system are also described. Another system consists of material containing pre-formed spaces coated with water-polyethylene glycol solution of hypohalide salt and encapsulated by film forming polymer. Hypohalide salts within both systems are in some cases storage stable for at least three months.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: July 11, 2017
    Assignee: The University of South Dakota
    Inventors: Yuyu Sun, Zhengbing Cao, Simon Johnston
  • Patent number: 8992731
    Abstract: An object of the invention is to provide cellulose fibers which can give a cellulose composite that renders high transparency, a reduction in linear expansion coefficient, and a high modulus of elasticity possible. The invention relates to: a process for producing modified cellulose fibers which includes a modification reaction step of reacting cellulose with an aromatic compound in an organic acid to thereby modify the cellulose with an aromatic-ring-containing substituent; cellulose fibers modified with aromatic-ring-containing substituent; a dispersion of the cellulose fibers; and a cellulose fiber composite obtained from the same.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: March 31, 2015
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Hideko Akai
  • Patent number: 8920520
    Abstract: Processing of cellulose, and more particularly, fiber opening and downstream processing and chemistry are provided. A process includes moistening a cellulose sheet stock to a water content in a range from about 20% to about 50%, attriting the moistened cellulose sheet to a wet pulp, flash drying the wet pulp to a floccule of cellulose having a moisture content from about 4% to about 8%, and esterifying the floccule of cellulose to provide a cellulose ester product.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: December 30, 2014
    Assignee: Celanese Acetate LLC
    Inventors: Thomas S. Garrett, Lawton E. Kizer, Henry P. Stogner
  • Patent number: 8292970
    Abstract: A composition for treating fabric includes about 0.1 to about 10.0% cross linking agent, about 0.1 to about 5.0% polyolefin, about 0.1 to about 0.5% wetting agent, about 0.0 to about 8.0% aminofunctional silicone, about 0.0 to about 6.0% ionizing agent, about 0.0 to about 2.0% catalyst and any remainder as a carrier. The composition has a pH of between about 2.0 to about 4.0 and at least some aminofunctional silicone and/or ionizing agent is provided.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: October 23, 2012
    Assignee: STRA, LLC
    Inventors: Wolfgang A. Strahl, Ellis Davis, Jr., John D. Turner
  • Publication number: 20120097352
    Abstract: The invention relates to a method of treating chemical pulp fibres by a polymerizing hydroxy acid, the fibres thus obtained and the products refined from them. In the method, the hydroxy acid reacts with the reactive groups of the fibres in the presence of a catalyst, forming ester bonds. The following units of the same hydroxy acid are oligomerized and/or polymerized to these grafted acid residues. The fibres thus treated and the products refined thereof endure better processing stages that include drawing and stretching than untreated fibres.
    Type: Application
    Filed: March 18, 2010
    Publication date: April 26, 2012
    Applicant: STORA ENSO OYJ
    Inventors: Jari Räsänen, Tapani Penttinen, Ali Harlin, Jaakko Hiltunen, Hanne Wikberg, Tekla Tammelin
  • Patent number: 7896928
    Abstract: A composition for treating fabric includes about 0.1 to about 10.0% cross linking agent, about 0.1 to about 5.0% polyolefin, about 0.1 to about 0.5% wetting agent, about 0.0 to about 8.0% aminofunctional silicone, about 0.0 to about 6.0% ionizing agent, about 0.0 to about 2.0% catalyst and any remainder as a carrier. The composition has a pH of between about 2.0 to about 4.0 and at least some aminofunctional silicone and/or ionizing agent is provided.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: March 1, 2011
    Assignee: STRA, LLC
    Inventors: Dan C. Short, Woflgang A. Strahl, Ellis Davis, Jr., John D. Tumer
  • Publication number: 20090199349
    Abstract: Cellulosic fibers treated with telomers of polyacrylic acid.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 13, 2009
    Inventor: Barry Weinstein
  • Patent number: 7192451
    Abstract: A method of treating finished garments comprising cellulosic material so as to cause cross-linking, which comprises the step of treating fabrics with an effective amount of a blocked cross-linking agent for cellulose, the cross-linking agent being thermally activated.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: March 20, 2007
    Assignee: Unilever Home & Personal Care USA division of Conopco, Inc.
    Inventors: Shameem Bhatia, Robert John Carswell, Paul Johnathon Evans, Paul Hugh Findlay
  • Patent number: 7175741
    Abstract: Hydrogen sulfide is removed or reduced in absorbent products by the use of a particulate material attached to pulp fiber by a retention aid. The particulate material can remove or reduce the hydrogen sulfide in the environment surrounding the fiber. Suitable materials are zinc oxide, calcium oxide, cupric oxide, magnesium oxide, manganese dioxide, manganese oxide and aluminum oxide. Zeolites are also suitable. The particulate material may be combined with a filler prior to attachment to the fiber.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: February 13, 2007
    Assignee: Weyerhaeuser, Co.
    Inventors: Hugh West, Colin Elston, David DeJong
  • Patent number: 7109324
    Abstract: A process for chemically bonding an odor-encapsulating agent to textiles includes reacting a cyclodextrin with a cross-linking agent capable of forming ether bonds with the cyclodextrin and with the textile material, and curing the textile material treated with a mixture of the cyclodextrin and cross-linking agent. Preferably, the cross-linking agent is imidazolidone, which forms an ether bond with a hydroxyl group on the cyclodextrin and with a hydroxyl group. In textile materials containing cellulose, imidazolidone forms an ether bond with a hydroxyl group on the cellulose. An active agent can be complexed with the cyclodextrin for release. Textiles formed by such a process can comprise an article of clothing adapted to trap odors emanating from a wearer.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: September 19, 2006
    Assignee: Dan River, Inc.
    Inventors: Donald Eugene Todd, David Alan Brown
  • Patent number: 6861520
    Abstract: A process for chemically bonding an odor-encapsulating agent to textiles includes reacting a cyclodextrin with a cross-linking agent capable of forming ether bonds with the cyclodextrin and with the textile material, and curing the textile material treated with a mixture of the cyclodextrin and cross-linking agent. Preferably, the cross-linking agent is imidazolidone, which forms an ether bond with a hydroxyl group on the cyclodextrin and with a hydroxyl group. In textile materials containing cellulose, imidazolidone forms an ether bond with a hydroxyl group on the cellulose. An active agent can be complexed with the cyclodextrin for release. Textiles formed by such a process can comprise an article of clothing adapted to trap odors emanating from a wearer.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: March 1, 2005
    Assignee: Dan River, Inc.
    Inventors: Donald Eugene Todd, David Alan Brown
  • Patent number: 6821383
    Abstract: This invention relates to a method of producing modified fluff pulp comprising treating cellulose pulp with a nitroxide-mediated oxidation method and fluffing the treated cellulose pulp. The invention further relates to the modified fluff pulp prepared therefrom and absorbent articles comprising the modified fluff pulp.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: November 23, 2004
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Michele Merrette Shore, A. Levent Cimecioglu
  • Patent number: 6780201
    Abstract: Curly cellulose fibers having a high wet resiliency and a method of making high wet resiliency curly cellulose fibers with a chemically-assisted curling method. Polymeric reactive compounds are used to provide intrafiber crosslinking in curly fibers, thereby chemically setting the curl in the fibers, resulting in fibers that are stiff enough to not collapse upon wetting. These high wet resiliency curly cellulose fibers maintain a capillary structure during fluid acquisition and distribution, thus increasing absorbency.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: August 24, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Tong Sun, Jeffrey Dean Lindsay
  • Publication number: 20040064900
    Abstract: The present invention relates to polymer-grafted natural fiber used for the preparation of composite materials. The invention relates in particular to a process for making such polymer-grafted natural fibers.
    Type: Application
    Filed: October 17, 2003
    Publication date: April 8, 2004
    Applicant: Universita' Degli Studi Di Bologna
    Inventors: Mariastella Scandola, Sergio Sandri, Massimo Baiardo, Giovanna Frisoni
  • Patent number: 6716306
    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.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: April 6, 2004
    Assignee: Weyerhaeuser Company
    Inventors: Richard A. Jewell, Amar N. Neogi
  • Patent number: 6641619
    Abstract: An oil tone artificial leather sheet having a blend of an oily substance of viscosity 50-10,000 mPa·s at 30° C. and a supporting polymer on part or all of a nap surface of a napped sheet comprising a non-woven fabric of microfine fibers and polyurethane existing in the non-woven fabric, wherein raised fibers comprising the microfine fibers are present in part or all of at least one surface and are forming the nap surface, and which has a high-quality appearance, and the soft hand touch and touch of natural leather. The sheet is useful in, for example, the manufacture of shoes or the like.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: November 4, 2003
    Assignee: Kuraray Co., Ltd.
    Inventors: Yoshiki Nobuto, Hisao Yoneda, Kohei Hayashi
  • Patent number: 6620293
    Abstract: The invention provides a method for preparing cross-linked cellulosic fibers. A sheet of mercerized cellulosic fibers with a purity of at least 95% is treated with a solution containing carboxylic acid cross-linking agents. The treated cellulosic fibrous material is dried and cured in sheet form to promote intrafiber cross-linking. Cross-linked fiber products of this method, which is economic, that possess good porosity, bulking characteristics, wet resiliency, and absorption, low fines, low nits, and low knots, are also disclosed. This invention also includes a blended cellulose composition comprising a minor proportion of cellulose fibers having been similarly cross-linked with carboxylic acids and a major proportion of other cellulose fibers. This invention further provides individualized, chemically cross-linked cellulosic fibers comprising mercerized individualized cellulosic fibers with a purity of at least 95%, cross-linked with carboxylic acids.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: September 16, 2003
    Assignee: Rayonier Inc.
    Inventors: Karl D. Sears, Michael E. Haeussler, Tina R. Solomon
  • Patent number: 6607564
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional groups is reacted with an activated hydrophobic acyl group in the presence of a hindered base, thereby to covalently attach the hydrophobic acyl group to the modifiable functional groups on the material. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. For example, materials such as cellulose may be modified by reacting it with a acid chloride or acid anhydride including a hydrophobic acyl group, in the presence of a hindered base, such as tripentylamine, to attach the hydrophobic acyl groups to the hydroxyls on the cellulose, thereby to increase the hydrophobicity of the cellulose.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: August 19, 2003
    Assignee: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Patent number: 6592717
    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.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: July 15, 2003
    Assignee: Weyerhaeuser Company
    Inventor: Richard A. Jewell
  • Patent number: 6582557
    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.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: June 24, 2003
    Assignee: Weyerhaeuser Company
    Inventor: Richard A. Jewell
  • Patent number: 6579415
    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.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: June 17, 2003
    Assignee: Weyerhaeuser Company
    Inventor: Richard A. Jewell
  • Publication number: 20030108739
    Abstract: Curly cellulose fibers having a high wet resiliency and a method of making high wet resiliency curly cellulose fibers with a chemically-assisted curling method. Polymeric reactive compounds are used to provide intrafiber crosslinking in curly fibers, thereby chemically setting the curl in the fibers, resulting in fibers that are stiff enough to not collapse upon wetting. These high wet resiliency curly cellulose fibers maintain a capillary structure during fluid acquisition and distribution, thus increasing absorbency.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 12, 2003
    Inventors: Tong Sun, Jeffrey Dean Lindsay
  • Publication number: 20030106163
    Abstract: A modified cellulosic fiber having superabsorbent properties is described. The modified fiber of the invention has a fibrous structure substantially identical to the cellulosic fiber from which it is derived. The modified fiber is a water-swellable, water-insoluble fiber that substantially retains its fibrous structure in its expanded, water-swelled state. The modified fiber is a sulfated and crosslinked cellulosic fiber having a liquid absorption capacity of at least about 4 g/g. In one embodiment, the modified fiber is an individual, crosslinked, sulfated cellulosic fiber. In another aspects, the invention provides a rollgood that includes the modified fiber, absorbent composites and articles that include the modified fiber, and methods for making the modified cellulosic fiber.
    Type: Application
    Filed: July 19, 2002
    Publication date: June 12, 2003
    Inventors: Amar N. Neogi, Richard H. Young, Brent A. Petersen
  • Publication number: 20030051835
    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.
    Type: Application
    Filed: May 30, 2002
    Publication date: March 20, 2003
    Inventors: Richard A. Jewell, Amar N. Neogi
  • Publication number: 20030029585
    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.
    Type: Application
    Filed: September 27, 2002
    Publication date: February 13, 2003
    Applicant: Weyerhaeuser Company
    Inventor: Richard A. Jewell
  • Publication number: 20030029588
    Abstract: The present invention relates to an environmentally friendly process for the selective oxidation of carbohydrates. The process comprises the addition of a hydroperoxide, including hydrogen peroxide, to a carbohydrate having primary alcohol groups, particularly including polysaccharides, wherein said carbohydrate is contact with a nitroxyl radical mediator and the process is catalyzed by a peroxidase enzyme in the presence of halide ions.
    Type: Application
    Filed: May 8, 2001
    Publication date: February 13, 2003
    Inventors: Xiaoyuan Cui, A. Levent Cimecioglu, Yong-Cheng Shi
  • Publication number: 20030029586
    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.
    Type: Application
    Filed: September 27, 2002
    Publication date: February 13, 2003
    Applicant: Weyerhaeuser Company
    Inventor: Richard A. Jewell
  • Publication number: 20030024661
    Abstract: This invention relates to a method of producing modified fluff pulp comprising treating cellulose pulp with a nitroxide-mediated oxidation method and fluffing the treated cellulose pulp. The invention further relates to the modified fluff pulp prepared therefrom and absorbent articles comprising the modified fluff pulp.
    Type: Application
    Filed: January 28, 2002
    Publication date: February 6, 2003
    Inventors: Michele Merrette Shore, A. Levent Cimecioglu
  • Patent number: 6491727
    Abstract: Compositions and methods of rendering cellulosic materials flame resistant, and articles of manufacture including the materials, are disclosed. The compositions include one or more crosslinking agents, and, optionally, one or more phosphorus-based compounds. Dimethyloldihydroxyethylene urea, imidazole, imidazolidinones, dialdehydes, and dichlorotriazines are preferred crosslinking agents. The methods involve applying the composition to the material, and covalently linking the crosslinking agent to the material. An advantage of covalently linking the crosslinking agent to the cellulosic material is the lack of any potential toxicity associated with uncrosslinked fire retardants on the cellulosic material and the stability of the bonds between the material and the crosslinking agent to conventional steam cleaning and other carpet cleaning methods. In a preferred embodiment, the fire-retardant cotton-fiber composition is used to prepare cotton carpets, upholstery or raised surface apparel.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: December 10, 2002
    Assignee: Cotton Incorporated
    Inventors: William A. Rearick, John Turner, Michele Lefeber Wallace, Dana Wernsman
  • Patent number: 6488718
    Abstract: Compositions and methods of rendering cellulosic materials fire retardant, and articles of manufacture including the materials, are disclosed. The compositions include an amino acid, protein and/or peptide and optionally include one or more crosslinking and/or coupling agents. Enzymes are a preferred protein. The methods involve applying the composition to the material, and optionally involve covalently linking the amino acid, protein and/or peptide to the material, either directly or via a crosslinking agent. An advantage of covalently linking the amino acid, protein and/or peptide to the cellulosic material is the lack of any potential toxicity associated with breathable dust particles of unbound amino acid, protein and/or peptide, and the stability of the bonds between the material and the amino acid, protein and/or peptide to conventional steam cleaning and other carpet cleaning methods.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: December 3, 2002
    Assignee: Cotton Incorporated
    Inventor: William A. Rearick
  • Patent number: 6485530
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional groups is reacted with an activated hydrophobic acyl group in the presence of a hindered base, thereby to covalently attach the hydrophobic acyl group to the modifiable functional groups on the material. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. For example, materials such as cellulose may be modified by reacting it with an acid chloride or acid anhydride including a hydrophobic acyl group, in the presence of a hindered base, such as tripentylamine, to attach the hydrophobic acyl groups to the hydroxyls on the cellulose, thereby to increase the hydrophobicity of the cellulose.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: November 26, 2002
    Assignee: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Patent number: 6471824
    Abstract: Carboxylated cellulosic fibers having a polycarboxylic acid covalently coupled thereto and a water retention value greater than or equal to the water retention value of the fibers from which the carboxylated fibers are formed; fibrous products that incorporate the carboxylated fibers; methods for making the fibers; and methods for making the fibrous products that incorporate the fibers.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: October 29, 2002
    Assignee: Weyerhaeuser Company
    Inventor: Richard A. Jewell
  • Patent number: 6368456
    Abstract: This invention relates to paper comprising aldehyde modified cellulose pulp prepared using nitroxyl radical mediated oxidation and further containing selected additives comprising aldehyde functional polymers or polymers containing functionality capable of reacting with aldehyde groups and having improved strength properties. This invention further relates to paper made from aldehyde modified cellulose pulp where an hydroxyl group containing polymer is added to the paper to provide wet strength properties.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: April 9, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: A. Levent Cimecioglu, John S. Thomaides, Kraig A. Luczak, Robert D. Rossi
  • Patent number: 6361651
    Abstract: The wet strength softness absorbency, absorbency rate and other valuable properties in paper products, tissues, wipes, towels, etc. can be improved by using, in the paper forming process, a cellulosic material comprising a carboxymethyl cellulose material associated with a monomeric or polymeric cationic additive material. A process of the invention comprises a fiber surface carboxymethylation and an aqueous medium followed by blending the modified fibers with a cationic additive under varying conditions and wet forming the tissue and towel products. The additive is typically a cationic additive that preferentially associates with a carboxymethyl group on the cellulose surface. The affinity between the positively charged cationic groups in the polymeric or monomeric additive material to the negatively charged carboxyl group in the carboxymethyl cellulose modified fiber improves various attributes of the paper products.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: March 26, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Tong Sun
  • Patent number: 6306251
    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.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: October 23, 2001
    Assignee: Weyerhaeuser Company
    Inventors: Richard A. Jewell, Amar N. Neogi
  • Patent number: 6245117
    Abstract: A compound A expressed by the following chemical formula (wherein R denotes an organic group including a hydrocarbon group, an alkanolamine group, an aromatic group and/or a group including a polyoxyalkylene adduct; m denotes a positive integer of 0 to 3 and can be represented by a plurality of values; and k denotes a positive integer of 2 to 6) and containing a chlorohydrin group at its terminal is brought into contact with cellulose fibers in an aqueous phase in the presence of an alkali metal compound so that the cellulose fibers are crosslinked at the molecular level. Thus, the crosslinking reaction occurs on the surface of the cellulose fiber, and the anti-fibrillation effect and deep dyeing effect can be obtained without damaging the soft feeling of the cellulose fiber.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: June 12, 2001
    Assignee: Ipposha Oil Industries Co., Ltd.
    Inventors: Sadahiko Nishikawa, Shigenobu Fujita, Kazuhide Tsuji
  • Patent number: 6241780
    Abstract: This invention relates to a method for strengthening a cellulosic substrate by treating the substrate with a formaldehyde-free curable aqueous composition and curing the composition. The cellulosic substrates include, for example, paper oil- and air-filter stock, rayon nonwoven wipes, cellulosic laminating stock, cotton woven fabrics, and wood flakes suitable to be consolidated into flakeboard.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: June 5, 2001
    Assignee: Rohm and Haas Company
    Inventors: Charles Thomas Arkens, Scott Lind Egolf, Robert David Gleim, Oscar Hsien-Hsiang Hsu, Kenneth John Wiesinger
  • Patent number: 6203577
    Abstract: A method for shrink-proofing a cellulosic fiber textile that involves liquid ammonia treatment, hot water or alkali treatment under tension or under no tension, and with optional resin treatment.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: March 20, 2001
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Yuichi Yanai, Takayuki Hirai, Masayoshi Oba, Kiyoshi Ikeda, Yasushi Takagi, Takeo Ishikawa, Kazuhiko Harada, Hirotaka Iida, Ryuichi Ito, Osamu Hasegawa
  • Patent number: 6176973
    Abstract: An absorbent cellulose product includes cellulose fibers which are cross-linked by reaction with an effective quantity of one or more water-soluble polymers which are produced in advance, which have an average molecular weight of between 350 and 70,000 g/mol, and which possess free acid or aldehyde groups. When the product is being prepared, the cellulose fibers are impregnated with the polymers in aqueous solution. The impregnated substance is dried and defibered at the latest after drying, after which the defibered cellulose fibers are cross-linked in the dry state by means of heating the impregnated, dried and defibered cellulose product.
    Type: Grant
    Filed: January 5, 1998
    Date of Patent: January 23, 2001
    Assignee: Stora Kopparbergs Bergslags Aktiebolag (PUBL)
    Inventor: Leif Norlander
  • Patent number: 6168863
    Abstract: The present invention provides a novel fibrous chelate-forming material to which a capability of forming a chelate with metal is imparted by introducing a specific acyl group represented by the following general formula [1] or [2], and also discloses a novel process for producing a chelate-forming fiber, a process for sequestering with the same, and a filter capable of simultaneously removing impurities and metal ions in a fluid is imparted using the chelate-forming fiber. [wherein each symbol is as defined in the specification.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: January 2, 2001
    Assignees: Chelest Corporation, Chubu Chelest Co., Ltd.
    Inventors: Nobuyoshi Nambu, Osamu Ito, Shiho Sato
  • Patent number: 6156075
    Abstract: The present invention provides a metal chelate forming fiber in which a reactive functional group in a molecule in the surface of the fiber is substituted with an acyl group represented by the following formula [1]: ##STR1## (where R.sup.1, R.sup.2, and R.sup.3 respectively are a lower alkylene group, and n is an integer of 1 to 4.) The present also provides a method for preparing the fiber, and a process for treating waste water using the fiber where metal ions contained in the waste water are allowed to be captured by the acyl group.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: December 5, 2000
    Assignees: Chelest Corporation, Chubu Chelest Co., Ltd.
    Inventors: Nobuyoshi Nanbu, Osamu Ito, Koujirou Nagatsuka
  • Patent number: 6117545
    Abstract: Cellulose microfibrils, in particular for use as a reinforcing filler or structuring agent in composite materials, a method for making same, and composite materials containing said microfibrils, are disclosed. Specifically, said microfibrils are surface-modified cellulose microfibrils with an L/D ratio higher than 20, preferably higher than 100, and an average diameter of 1-50 nm, where L is the length of the microfibril and D is its average diameter. At least 25% by number of the hydroxyl functions on the surface of the microfibrils are esterified by at least one organic compound including at least one function capable of reacting with the hydroxyl groups of the cellulose. As a result, when the organic compound is a compound that includes acetyl groups such as acetic acid, said microfibrils are used as a reinforcing filler in a material comprising cellulose acetate as the polymeric matrix. The filled composite material may be shaped to provide films, moldings, fibers or yarns.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: September 12, 2000
    Assignee: Rhodia Chimie
    Inventors: Jean-Yves Cavaille, Henri Chanzy, Etienne Fleury, Jean-Fran.cedilla.ois Sassi
  • Patent number: 6048479
    Abstract: A process for manufacturing cellulose fibers or yarns with a reduced tendency to form fibrils includes treating fibers or yarns, which are washed after the filament forming process but not yet dried, with a cross-linking agent. The process includes treating the fibers or yarns with reactive polysiloxanes which are modified with amino, polyalkylene oxide, epoxy or carboxyl functional groups and which cross-link with themselves. The process is particularly suitable for fibers produced according to the NMMO process.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: April 11, 2000
    Assignee: Akzo Nobel NV
    Inventor: Abdulmajid Hashemzadeh
  • Patent number: 6033443
    Abstract: This invention relates to a process for treating Lyocell cellulose fibers, which comprises treating the Lyocell cellulose fiber with at least one compound of formula ##STR1## wherein X is --NR-- or --S--, A is an aliphatic radical containing 1 to 18 carbon atoms which is free of sulfo groups, or --X--A is hydroxy, and R is hydrogen or, independently of A, has the meaning of A.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: March 7, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Peter Aeschlimann
  • Patent number: 6025284
    Abstract: Wrinkled fabrics comprising ultraviolet absorbers are disclosed which provide improvements in ultraviolet transmission, wearer comfort, and cost over those of the prior art. The preferred fabric is polyester and the preferred UV absorbers are chlorobenzotriazoles. The polyester is wrinkled permanently so as to provide an extra barrier to ultraviolet radiation from solely utilizing UV absorbers alone. This wrinkled product is also more comfortable to a wearer, particularly in warm weather or hotter climates. Other non-apparel uses are also contemplated including tents, awnings, and crowd covers. A method of making such a fabric is also disclosed comprising stuffing a jet dyeing machine with a more than normal load amount of fabric and eventually heat setting such resultant wrinkles into the finished product.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: February 15, 2000
    Inventors: Francis W. Marco, Max T. Hyde, Bennie H. Reynolds
  • Patent number: 5968813
    Abstract: The invention deals with a process for providing a cellulosic material, such as a fabric or a paper and pulp product, with improved strength and/or shape-retention and/or anti-wrinkling properties, the process comprising contacting, in an aqueous medium, the cellulosic material with a xyloglucan endotransglycosylase (XET).
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: October 19, 1999
    Assignee: Novo Nordisk A/S
    Inventors: Lene Venke Kofod, Henrik Lund
  • Patent number: 5951715
    Abstract: A method for imparting permanent press properties to a textile containing cellulose fibers. The method involves applying an aqueous solution of a polysaccharide aldehyde and/or acetal at a pH of 1 to 8 to a textile, and heating the textile at a sufficient temperature for a sufficient time to react the polysaccharide aldehyde and/or acetal with the textile wherein water is removed from the textile, to impart permanent press properties to the textile. The method of the present invention provides permanent press properties to textiles treated therewith and increases the resistance of such textiles to future laundering abrasion. Such treated textiles display a significant reduction in wrinkles compared with nontreated textiles. Moreover, the treated textiles have a tactile sensation of feeling soft and retain their smoothness after laundering.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: September 14, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Klein A. Rodrigues, A. Levent Cimecioglu, Michael C. Hazelwood
  • Patent number: 5882356
    Abstract: The fibrillation tendency of solvent-spun cellulose fiber is reduced by treating the previously dried fiber with a chemical reagent containing at least two functional groups which are reactive with cellulose and which are electrophilic carbon--carbon double bonds, particularly vinyl sulfone groups, or precursors thereof or electrophilic three-membered heterocyclic rings or precursors thereof. The chemical reagent is preferably colorless and is preferably applied to the fiber from aqueous solution. The fiber may be contained in a woven or knotted fabric.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: March 16, 1999
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventor: Christopher David Potter