Esterifying, Etherifying Or Immunizing Patents (Class 8/120)
  • Patent number: 5879408
    Abstract: Stainproofing properties are imparted to a cellulose fiber by 1) esterifying a part of hydroxyl groups of the cellulose fiber in a heterogeneous reaction system and 2) subjecting the partially esterified cellulose fiber to a stainproofing treatment with an aqueous solution or emulsion of a copolymer having repeating units derived from a fluroalkyl group-containing polymerizable compound and a compound represented by the general formula:CH.sub.2 .dbd.CR.sup.1 COO--(XO).sub.m --(YO).sub.n --R.sup.2( 1)wherein X is --CH(CH.sub.3)--CH.sub.2 -- or --CH.sub.2 --CH(CH.sub.3)--; Y is --CH.sub.2 CH.sub.2 --; R.sup.1 is a hydrogen atom or a methyl group; R.sup.2 is a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; and each of m and n is an integer of 0 to 50, provided that the total of m and n is an integer of 1 to 70.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: March 9, 1999
    Assignee: Daikin Industries Ltd.
    Inventors: Motonobu Kubo, Takashi Enomoto
  • Patent number: 5879410
    Abstract: A process for resin finishing textile containing cellulosic fiber comprises the steps of using a resin finishing agent chiefly containing a cellulose-reactive N-methylol compound having two or more functional groups and a reaction catalyst, mainly reacting only one functional group of the cellulose-reactive N-methylol compound with cellulose, water washing, again imparting reaction catalyst, drying, garment making, and heat treating. The process eliminates the conventional postcuring method drawbacks of loss of color fastness and discoloration owing to dye decomposition and formaldehyde increase by unreacted resin and residual reaction catalyst during long storage before heat treatment, and simultaneously achieves high crease-resistant property, shrink resistance, good feeling, excellent pleating property, and anti-puckering property.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: March 9, 1999
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Yuichi Yanai, Masayoshi Oba, Yasushi Takagi, Tadashi Isogai
  • Patent number: 5855624
    Abstract: The present invention relates to cellulose fibers excellent in dirt removability and a method of treatment thereof. The cellulose fibers of the invention are liquid ammonia-treated cellulose fibers whose partial or entire exterior is coated with an ester of (A) a polycarboxylic acid having at least three carboxyl groups and (B) a hydrophilic polyol having an oxyethylene group or groups and at least two alcoholic hydroxyl groups and/or which fibers are impregnated with the ester.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: January 5, 1999
    Assignee: New Japan Chemical Co., Ltd.
    Inventors: Kango Fujitani, Yoko Fukuyama, Toshio Watanuki, Hiroyuki Miura, Yutaka Tsujimoto, Kazuhisa Honda, Yoshitaka Uno, Yoshiaki Sakai
  • Patent number: 5856248
    Abstract: Cellulose fibers and products comprising such fibers treated to absorb body secretions and to substantially decrease microbial growth, said fibers being chemically treated with a water soluble salt of a transition metal and an alkali and after this with a solution of a bisbiguanide compound, forming a bond between the fibers, the transition metal and the bisbiguanide. Preferred are water-soluble cupric salts as a suitable hydroxide. A preferred bisbiguanide is chlorhexidine. The products can be yarns, knitted, woven, non-woven fabrics, paper gauze and especially bandages, wound dressings, pads, diapers, sanitary napkins, tampons, bed sheets, pants, garments, towels, socks, shoe linings and underwear. Preferably between 0.1 to 3.0 weight per cent copper calculated on the cellulose is bonded to the cellulose.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: January 5, 1999
    Inventor: Amotz Weinberg
  • Patent number: 5834095
    Abstract: Disclosed is a process for treating cellulosic fibers using high temperatures that is effective to result in modified cellulosic fibers that exhibit desired properties such as water retention values and wet curl values. The high temperature process is quite efficient and has been found to produce cellulosic fibers that are essentially uniformly treated. Also disclosed is a handsheet prepared from the treated cellulosic fibers for use in disposable absorbent products.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: November 10, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Jacek Dutkiewicz, Krzysztof Andrzej Szymonski, Gerard Martin Aberson, Tong Sun
  • Patent number: 5789326
    Abstract: A binder is applied to fibers to bind particles to the fibers. The fibers have hydrogen bonding functional groups. The particles have functional groups capable of forming a hydrogen bond or a coordinate covalent bond. The binder comprises binder molecules, the binder molecules having at least one functional group that is capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that is capable of forming a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: August 4, 1998
    Assignee: Weyerhaeuser Company
    Inventors: Michael R. Hansen, Richard H. Young, Sr.
  • Patent number: 5759210
    Abstract: The fibrillation tendency of lyocell fabrics, and the degree of fibrillation of fibrillated lyocell fabrics, can be reduced by treating such fabrics with a cross-linking agent in the presence of an acid catalyst. Good results may be obtained when the ratio by weight of the catalyst to the optional cross-linking agent is at least about 0.5:1. Good results may be obtained when the amount of cross-linking agent fixed on the fabric is in the range 0.5 to 1.5 percent on weight of fabric.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: June 2, 1998
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventors: Christopher David Potter, James Martin Taylor
  • Patent number: 5755828
    Abstract: Crosslinked cellulose fibers having free pendant carboxylic acid groups are disclosed. The fibers include a polycarboxylic acid covalently coupled to the fibers, and are crosslinked with a crosslinking 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.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: May 26, 1998
    Assignee: Weyerhaeuser Company
    Inventor: John A. Westland
  • Patent number: 5741753
    Abstract: Essentially nitrate-free catalyst for the wash-and-wear finishing of textiles with formaldehyde-free crosslinkers, comprising magnesium, tetrafluoroborate, chloride and sulfate ions in the molar weight ratios of(a) Mg.sup.2+ : BF.sub.4.sup.- =1:0.1 to 1:4,(b) Mg.sup.2+ : Cl.sup.- =1:1.7 to 1:15 and(c) SO.sub.4.sup.2- : Cl.sup.- =1:0.2 to 1:4.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: April 21, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Pia Hois, Toni Simenc
  • Patent number: 5738688
    Abstract: The invention consists of a process to improve the resistance to stains on fibres, processed or not, finished or not on the basis of dyeable natural or synthetic fibres, in particular polyamide. According to the invention the fibres are treated with a solution containing tannic acid and a condensation product of a sulphonated phenol- or naphtol-derivate with an aldehyde. The treatment can be made before, during or after the dyeing process. The treatment is done in an acid medium.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: April 14, 1998
    Assignee: N. V. Denderland-Martin
    Inventor: Armand De Lathauwer
  • Patent number: 5733750
    Abstract: Disclosed is a process for chemical finishing of fabrics, fibers or yarns wherein insoluble cellulosic polymers are reacted with carboxylic acids or esters thereof in the presence of a lipase. The cellulosic polymer may be cotton, viscose, rayon, lyocell, flax, linen, ramie, and all blends thereof; and blends thereof with polyesters, wool, polyamides, acrylics and polyacrylics. The lipase may be a microbial lipase, including a lipase obtained from yeast, e.g. Candida lipase, a bacterial lipase, e.g. Pseudomonas lipase, or a fungal lipase, e.g. Humicola or Rhizomucor lipases. Chemically modified lipases obtained by coupling polyethylene glycol to amino acid residues of the lipase may also be used.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: March 31, 1998
    Assignee: Novo Nordisk A/S
    Inventors: Henrik Lund, Ole Kirk
  • Patent number: 5725601
    Abstract: A water absorbent cross-linked, carboxyalkylated cellulose-containing material is produced by impregnating a cellulose-containing material with an aqueous reaction solution including a carboxyalkylating agent, an alkali metal hydroxide, and a cross-linking agent dissolved in water in an initial content of 50 to 90% by weight, the molar ratio of the carboxylating agent to glucose groups of cellulose being 0.7 to 2.0; adjusting the water content of the aqueous reaction solution impregnated in the cellulose-containing material to 20 to 60% by weight and of at least 5% by weight below the initial water content by evaporating a portion of water; and subjecting the water content-adjusted cellulose-containing material to a simultaneous cross-linking and carboxylating reaction procedure at 50.degree. to 110.degree. C., while maintaining the water content at 20 to 60% and of at least 5% by weight below the initial water content.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: March 10, 1998
    Assignee: New Oji Paper Co., Ltd.
    Inventors: Kozo Tajiri, Masayo Maeda, Haruo Tsukamoto
  • Patent number: 5718728
    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: August 26, 1996
    Date of Patent: February 17, 1998
    Assignee: Rohm and Haas Company
    Inventors: Charles Thomas Arkens, Scott Lind Egolf, Robert David Gleim, Oscar Hsien-Hsiang Hsu, Kenneth John Wiesinger
  • Patent number: 5709715
    Abstract: The silicon or silica substrates described have a modified surface of a new type occupied by the alcohol fraction of an orthoester. The alcohol fraction may be saturated or unsaturated. The surface of the substrate is modified by being treated with an orthoester, the water being eliminated from the surface by hydrolysis and then replaced by the resulting alcohol or silylether. Besides many other compounds, new orthoesters having the formula R.sup.1 C?OCH.sub.2 --CH.sub.2 --O--CO--CH.dbd.CH.sub.2 !.sub.3, in which R.sup.1 stands for hydrogen or for a clearable organic residue, R stands for (CH.sub.2).sub.n, in which n stands for an integer between 1 and 18, and new orthoesters having the formula (I), are particularly appropriate. In the formula (I), R.sup.1 stands for hydrogen or an organic residue, R.sup.3 stands for hydrogen or an alkyl group with 1 to 6 carbon atoms; and R.sup.4 stands for hydrogen, an alkyl group or an alkyl group or a phenyl group.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: January 20, 1998
    Assignee: Owens-Corning Fiberglas Technology Inc.
    Inventors: Bruno Guidotti, Walter Caseri, Ulrich Suter, Wolfgang Saur
  • Patent number: 5700394
    Abstract: A method for the treatment of a textile fiber to reduce the amount of UV light passing through a fabric produced from said treated fiber comprising treating a textile fiber with 0.1 to 6.0% by weight on the fiber, of a UV absorber of the formula (1) ##STR1## wherein A is the radical of a UV absorber, B is the radical of a UV absorber or is a water-solubilizing group and X is F or Cl, and textile fabrics and articles of clothing produced from said fabrics. Fabrics prepared from the treated fibers are useful in making clothing which provides protection against UV radiation for skin which is covered by the clothing, especially lightweight summer clothing.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: December 23, 1997
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Jayanti V. Isharani, Willaim M. Hung, Kai C. Su
  • Patent number: 5698688
    Abstract: Modified cellulosic fibers are formed by (1) esterifying cellulosic fibers with a 1,2-disubstituted alkene that has at least one carboxylic acid group reactive with cellulosic hydroxyl groups and (2) oxidizing the esterified fibers to form aldehyde groups. The modified fibers are useful in paper products, which tend to have temporary wet strength. Strength additives may be included in the paper product to impart a higher level of temporary wet strength or permanent wet strength.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: December 16, 1997
    Assignee: The Procter & Gamble Company
    Inventors: David Jay Smith, Jimmie Ed Ruth, Jr.
  • Patent number: 5695528
    Abstract: A treating agent for cellulosic textile materials includes a water-soluble phosphonium salt of phosphorus-containing oxoacid and polycarboxylic acid as active ingredients, and a process of treating cellulosic textile materials uses the treating agent. The treating agent eliminates the necessity of the use of a substance releasing formaldehyde during wash and wear treatment and enables non-formaldehyde wash and wear treatment, and the cellulosic textile material treated by the treating agent is completely free from formaldehyde, retains enough of the strength thereof, and undergoes neither discoloration nor fibrillation.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: December 9, 1997
    Assignees: Nippon Chemical Industrial Co., Ltd., Koizumi Chemical Co., Ltd., Chiyoda Shoji Co., Ltd.
    Inventors: Katsuhiko Komori, Akira Saito, Seiji Shimura
  • Patent number: 5589256
    Abstract: A method of producing easily densified high bulk fibers that have adhered particulates. The high bulk fibers have hydrogen bonding or coordinate covalent bonding functionalities, and a binder is applied to the fibers to bind the particles to the fibers. The binder has a functional group that forms a hydrogen bond or a coordinate covalent bond with the particles, and a functional group that forms a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: December 31, 1996
    Assignee: Weyerhaeuser Company
    Inventors: Michael R. Hansen, Richard H. Young, Sr.
  • Patent number: 5580356
    Abstract: The fibrillation tendency of solvent-spun cellulose fibre is reduced by treating the fibre with a cross-linking agent and a flexible linear polymer with terminal functional groups, for example polyethylene glycol (PEG) of molecular weight 300 to 600. The fibre may be treated in never-dried or in fabric form.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: December 3, 1996
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventor: James M. Taylor
  • Patent number: 5562740
    Abstract: Disclosed is a process for making reduced odor individualized, crosslinked fibers which includes the steps of providing cellulosic fibers, contacting the fibers with a solution containing a C.sub.2 -C.sub.9 polycarboxylic acid crosslinking agent, mechanically separating the fibers into substantially individual form, drying the fibers and reacting the crosslinking agent with the individualized fibers to form intrafiber crosslink bonds. The individualized cellulosic fibers are then contacted with a strong alkaline solution and strong oxidizing agent to reduce the odor and increase the brightness. Preferably, the crosslinking agent is citric acid, and preferably, between about 1.0 weight % and about 12.0 weight % of the crosslinking agent reacts to form the intrafiber crosslink bonds. Preferably, the alkaline solution is an aqueous solution of sodium hydroxide, and preferably, about 0.09 weight % of the sodium hydroxide, on a dry fiber weight basis, is applied to the crosslinked fibers.
    Type: Grant
    Filed: June 15, 1995
    Date of Patent: October 8, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Jeffery T. Cook, Walter D. Daniels, Pedro A. Rodriguez, Peter A. Graef, Clifford R. Bolstad, William L. Duncan
  • Patent number: 5562739
    Abstract: The fibrillation tendency of lyocell fibre can be reduced by application to the fibre of a solution of a chemical reagent which contains at least two aliphatic aldehyde groups capable of reacting with each other in aqueous solution to form a cyclic hydrate containing a --CHOH--O--CHOH-- linkage, followed by reaction between the fibre and the reagent. The protection afforded by the invention is retained upon repeated laundering.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: October 8, 1996
    Assignee: Courtaulds Fibres (Holdings) Limited
    Inventor: Peter G. Urben
  • Patent number: 5536276
    Abstract: In treating a cellulose fiber article with 1,2,3,4-butanetetracarboxylic acid to improve properties, 1,2,3,4-butanetetracarboxylic acid containing up to 200 ppm of nitro radical is used, whereby the cellulose fiber article can be prevented from coloring to the utmost extent. The intended results of the invention can be achieved to a remarkable extent when using 1,2,3,4-butanetetracarboxylic acid containing up to 200 ppm of nitro radical and prepared by oxidizing tetrahydrophthalc acid and/or tetrahydrophthalic anhydride with hydrogen peroxide.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: July 16, 1996
    Assignee: New Japan Chemical Co., Ltd.
    Inventors: Kango Fujitani, Yoko Fukuyama
  • Patent number: 5496477
    Abstract: A composition and method for providing a non-formaldehyde durable press finish to cellulosic fabrics by employing polyphosphinocarboxylic acids are disclosed. The polyphosphinocarboxylic acid is preferably polyphosphinoacrylic acid, and is optimally used in combination with phosphonoalkylpolycarboxylic acid, and, for cost effectiveness, a low-cost polycarboxylic acid such as citric acid. The catalyst for the curing reaction is preferably a phosphorus-containing acid or alkali metal salt thereof such as a mixture of sodium monophosphate and sodium hypophosphite.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: March 5, 1996
    Assignee: PPG Industries, Inc.
    Inventors: Robert H. Tang, William A. Williams, Jr.
  • Patent number: 5496476
    Abstract: A composition and method for providing a non-formaldehyde durable press finish to cellulosic fabrics by employing phosphonoalkylpolycarboxylic acids are disclosed. The phosphonoalkylpolycarboxylic acid is optimally used in combination with another polycarboxylic acid, such as polyacrylic acid, and/or, for cost effectiveness, a low-cost polycarboxylic acid such as citric acid. The catalyst for the curing reaction is optimally a phosphorus-containing acid or alkali metal salt thereof, such as a mixture of sodium monophosphate and sodium hypophosphite.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: March 5, 1996
    Assignee: PPG Indutstries, Inc.
    Inventors: Robert H. Tang, William A. Williams, Jr.
  • Patent number: 5472665
    Abstract: A method for removing impurities and potentially toxic substances from cellulose is disclosed. The method comprises the following steps: (a) immersing cellulose containing organic extractables in one or more acid baths so as to remove traces of organic extractables; (b) immersing the cellulose in a water bath; (c) immersing the compressed cellulose in an alkaline bath; and (d) sterilizing the treated cellulose using pressurized steam.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: December 5, 1995
    Inventors: Paul M. Rosofsky, Seymour Gilbert
  • Patent number: 5447537
    Abstract: A non-formaldehyde polymerization-crosslinking treatment for cotton or other cellulose-containing fabrics resulting in a fabric with good durable press, wrinkle recovery, and other mechanical properties. Unsaturated monomers having two or more carboxyl groups are used in a polymerization-crosslinking treatment at a pH below about 3. The preferred system uses maleic acid and itaconic acid comonomers, potassium persulfate as a free radical initiator, and sodium hypophosphite as an esterification catalyst. A high quality durable press cotton fabric may be produced which does not release formaldehyde during processing, storage, or consumer use.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: September 5, 1995
    Assignee: Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
    Inventor: Hyung-Min Choi
  • Patent number: 5427587
    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: October 22, 1993
    Date of Patent: June 27, 1995
    Assignee: Rohm and Haas Company
    Inventors: Charles T. Arkens, Scott L. Egolf, Robert D. Gleim, Oscar H. Hsu, Kenneth J. Wiesinger
  • Patent number: 5393304
    Abstract: A spunlace non-woven cotton-based cloth which can be repetitively laundered without significant deterioration in the mechanical and textile properties thereof, including cotton fibers impregnated with polyamide-amine-epichlorohydrin resin. The resin is present in an amount of 0.2% to 1.0% by weight, based on the weight of the cotton fibers.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: February 28, 1995
    Assignee: Perfojet SA
    Inventors: Andre Vuillaume, Jean-Claude Lacazale
  • Patent number: 5385680
    Abstract: Process for finishing a textile in which the textile to be treated is impregnated using a finishing bath containing phosphinicosuccinic acid (I), phosphinicobissuccinic acid (II) or a mixture of phosphinicosuccinic acid (I) and phosphinico-bissuccinic acid (II), finishing bath, finished textile and use of previously-mentioned acids as textile finishes or as cross-linking agents for cellulose.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: January 31, 1995
    Assignee: Societe Francaise Hoechst
    Inventors: Wilhelm Didier, Gelabert Antonio
  • Patent number: 5376144
    Abstract: A process and apparatus for treating fabric articles containing cellulosic material to provide control shrinkage and durable-press properties for the fabric includes a system for exposing the fabric to an aerosol mist that uniformly supplies a liquid cellulosic cross linking agent and moisture to the fabric at essentially room temperature. Optionally, a liquid catalyst can be incorporated in the aerosol mist, whereby each droplet of the aerosol mist contains liquid cellulosic cross linking agent, moisture and catalyst promoting cross linking agent. Following exposure of the fabric to the aerosol mist containing moisture, cross linking agent and catalyst, the fabric is cross linked at an elevated temperature and subsequently cleaned of cross linking chemicals. The fabric can also be treated using an aerosol mist containing other liquid chemical agents.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: December 27, 1994
    Assignee: American Laundry Machinery, Inc.
    Inventors: David R. McClain, Ewart H. Shattuck
  • Patent number: 5352242
    Abstract: The present invention relates to a process for the formaldehyde-free easy care finishing of cellulose-containing textile material by treating the cellulose-containing textile material with an aqueous liquor containing a polycarboxylic acid crosslinker and a crosslinking catalyst, then drying and heat treating, which comprises using boric acid or a derivative thereof as the crosslinking catalyst.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: October 4, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dieter Lammermann, Bernhard Mees
  • Patent number: 5352372
    Abstract: A composition is provided for treating textile fabrics which reduces or eliminates free formaldehyde in the resin and the treated fabric while providing a non-yellowing treated fabric comprising DMDHEU or alkylated DMDHEU and dimethyl acetoacetamide.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: October 4, 1994
    Assignee: Sequa Chemicals, Inc.
    Inventor: Bernard F. North
  • Patent number: 5320645
    Abstract: A process is disclosed for imparting wrinkle-resistance and durable press properties to a fibrous garment which is, desirably, made at least in part of a cellulose fiber. The process involves wetting the fiber or garment such that natural fibers swell or the garment has at least about 30 percent by weight of water. The wetted garment, having the swollen fibers, is then treated with a resin solution. The resin must be suitable for imparting wrinkle-resistance and durable press properties to the fibrous garment. Such resins are known in the art. The resin "treating" solution desirably comprises at least about 10 percent excess of a stoichiometric amount of the resin. The excess solution is removed and the fabric or garment is then dried. The invention can include a step for recycling the excess solution from the treating procedure.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: June 14, 1994
    Inventors: Bobby T. Logue, David M. Hall
  • Patent number: 5300240
    Abstract: Process for finishing a textile in which the textile to be treated is impregnated using a finishing bath containing phosphinicosuccinic acid (I), phosphinicobissuccinic acid (II) or a mixture of phosphinicosuccinic acid (I) and phosphinico-bissuccinic acid (II), finishing bath, finished textile and use of previously-mentioned acids as textile finishes or as cross-linking agents for cellulose.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: April 5, 1994
    Assignee: Societe Francaise Hoechst
    Inventors: Didier Wilhelm, Antonio Gelabert
  • Patent number: 5295997
    Abstract: A process for the production of a spunlace nonwoven cloth based on cotton fibers, which includes continuously advancing the cloth (1) based on cotton fibers, interlacing (2, 3) those fibers with the aid of a plurality of water jets under pressure, drying (8) the interlaced cloth, and, finally, taking delivery (10) of the spunlace cloth (9) thus obtained. After interlacing (2, 3) and before drying (8) the free water contained in the interlaced cloth (4) is drained (5), then the drained cloth is impregnated (6) using an aqueous solution of a polyamide-amine-epichlorohydrin (PAE) resin in an amount, measured as solids, of 0.2% to 1% of the weight of the cotton fibers, and after having expelled the excess solution, the impregnated cloth (7) is dried (8) at a temperature sufficient to at least trigger the cross-linking of the PAE resin deposited.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: March 22, 1994
    Assignee: Perfojet S. A.
    Inventors: Andre Vuillaume, Jean-Claude Lacazale
  • Patent number: 5290320
    Abstract: A fiber treating agent which is a silicone modified polyester in which a polyester has a polyoganosiloxane grafted thereto. The grafted polyester is the reaction product of an allyl ether containing polyester and a polyorganosiloxane wherein at least one of the silicon atoms of the polyorganosiloxane has a hydrogen atom attached thereto. Preferably, the hydrogen atom is attached to one terminal end of the polyorganosiloxane. The reaction product is modified by reacting the reaction product with a polycarboxylic anhydride, and the amine salt of the modified reaction product may be formed by reacting the modified reaction product with an aminoalkylalkoxysilane. Methods of treating fibrous materials are also described.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: March 1, 1994
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Ryuzo Mikami, Isao Ona
  • Patent number: 5273549
    Abstract: Use as cellulose cross-linking agents of derivatives of alkanepolycarboxylic acids corresponding to general formula I: ##STR1## in which: n, m=0 or 1,R.sub.1, R.sub.3, R.sub.5 and R.sub.7 =H or COOH it being understood that at least two of the substituents from the said substituents R.sub.1, R.sub.3, R.sub.5 and R.sub.7 represent a carboxyl group,R.sub.2, R.sub.4, R.sub.6, R.sub.8 =H or PO(OH)(OR) where R=H or Alk C.sub.1 -C.sub.4, it being understood that only one substituent from the said substituents R.sub.2, R.sub.4, R.sub.6 and R.sub.8 represents said PO(OH)(OR) group, textile finishes containing said products of formula I and new derivatives of formula I.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: December 28, 1993
    Assignee: Societe Francaise Hoechst
    Inventors: Wilhelm Didier, Fietier Isabelle
  • Patent number: 5268004
    Abstract: A water repellant fabric and a process to produce that fabric is provided. The process comprises; providing a fabric substrate having sites reactive with polymeric functional groups; contacting the fabric substrate with a functional group containing polymer; removing unreacted functional group containing polymer; and recovering a water repellent fabric. The appearance, stiffness and texture of the treated fabric is similar to the untreated fabric and the hand of the treated fabric is excellent.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: December 7, 1993
    Assignee: Shell Oil Company
    Inventor: John L. Greak
  • Patent number: 5254134
    Abstract: A textile finishing agent is described which contains a water-soluble polysiloxane with polyether and epoxypolyether lateral chains and preferably moreover an antimicrobial substance, a crosslinking agent and catalysts.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: October 19, 1993
    Assignee: Tjoei H. Chu
    Inventors: Zhong Z. Zhao, Tjoei H. Chu
  • Patent number: 5221285
    Abstract: Catalysts for the rapid esterification and crosslinking of fibrous cellulose in textile form by polycarboxylic acids at elevated temperatures are disclosed. The catalysts are acidic or weakly basic salts selected from the alkali metal dihydrogen phosphates and alkali metal salts of phosphorous, hypophosphorous, and polyphosphoric acids. Suitable polycarboxylic acids include saturated, unsaturated and aromatic acids, as well as alpha-hydroxy acids. The textiles so treated exhibit high levels of wrinkle resistance and smooth drying properties durable to repeated laundering in alkaline detergents, and do not contain or release formaldehyde.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: June 22, 1993
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Bethlehem K. Andrews, Nancy M. Morris, Darrell J. Donaldson, Clark M. Welch
  • Patent number: 5205836
    Abstract: Durable press finishes are applied to cellulosic materials such as cotton by cross-linking a polycarboxylic acid within the cellulosic fibers using a cyanamide compound cross-linker devoid of phosphorus. Wrinkle-resistant, durable cellulosic materials free from formaldehyde odor result.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: April 27, 1993
    Assignee: Burlington Industries, Inc.
    Inventors: John H. Hansen, Phillip H. Riggins
  • Patent number: 5199953
    Abstract: A process for reducing discoloration of fibrous cellulosic material, treated at temperatures above about 175.degree. C. with a treating solution of a polycarboxylic acid and a phosphate salt curing catalyst, comprises adding to the treating solution an inorganic boron-oxygen compound.
    Type: Grant
    Filed: January 10, 1992
    Date of Patent: April 6, 1993
    Assignee: Ortec, Inc.
    Inventors: Kwok-Wing Fung, Kam H. Wong, David L. Brotherton
  • Patent number: 5190563
    Abstract: Disclosed is a process for making individualized, crosslinked fibers which includes the steps of providing cellulosic fibers, contacting the fibers with a solution containing a C.sub.2 -C.sub.9 polycarboxylic acid crosslinking agent, mechanically separating the fibers into substantially individual form, drying the fibers and reacting the crosslinking agent with the individualized fibers to form intrafiber crosslink bonds. Preferably, the crosslinking agent is citric acid, and preferably, between about 0.5 mole % and about 10.0 mole % of the crosslinking agent reacts to form the intrafiber crosslink bonds. The individualized, crosslinked fibers are useful in a variety of absorbent structure applications.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: March 2, 1993
    Assignee: The Proctor & Gamble Co.
    Inventors: Carlisle M. Herron, David J. Cooper, Thomas R. Hanser, Bart S. Hersko
  • Patent number: 5180614
    Abstract: The supple sheet according to the invention, which is resistant to tearing and bursting, has a low water- or other liquid-absorbing power, controlled porosity and is printable, comprises:at least cellulosic fibers,optionally synthetic fibers,at least one binder,at least one moisture-retaining agent in a proportion less than about 20% by dry weight of the sheet,at least one sizing agent.The invention finds an application in sterilizable packages.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: January 19, 1993
    Assignee: Arjomari Europe
    Inventor: Jean-Yves Escabasse
  • Patent number: 5137537
    Abstract: Disclosed are absorbent structures containing individualized, crosslinked fibers. The individualized, crosslinked fibers preferably have a C.sub.2 -C.sub.9 polycarboxylic acid crosslinking agent reacted with the fibers in the form of intrafiber crosslink bonds. Preferably, the crosslinking agent is citric acid, and between about 0.5 mole % and about 10.0 mole % crosslinking agent react to form the intrafiber crosslink bonds. Also preferably, the absorbent structures have actual dry densities greater than their corresponding equilibrium wet densities, and expand upon wetting. The absorbent structures may also contain hydrogel-forming material.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: August 11, 1992
    Assignee: The Procter & Gamble Cellulose Company
    Inventors: Carlisle M. Herron, David J. Cooper
  • Patent number: 5042986
    Abstract: A process for imparting wrinkle resistance and smooth drying properties to cellulose textiles by crosslinking the cellulose with a cyclic aliphatic polycarboxylic acid having at least two adjacent carboxyl groups in the trans configuration relative to each other, and the resulting crosslinked textile.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: August 27, 1991
    Assignee: The Dow Chemical Company
    Inventors: John D. Kitchens, Robert T. Patton, Bassam S. Nadar
  • Patent number: 4975209
    Abstract: Catalysts for the rapid esterification and crosslinking of fibrous cellulose in textile form by polycarboxylic acids at elevated temperatures are disclosed. The catalysts are acidic or weakly basic salts selected from the alkali metal dihydrogen phosphates and alkali metal salts of phosphorous, hypophosphorous, and polyphosphoric acids. Suitable polycarboxylic acids include saturated, unsaturated and aromatic acids, as well as alpha-hydroxy acids. The textiles so treated exhibit high levels of wrinkle resistance and smooth drying properties durable to repeated laundering in alkaline detergents, and do not contain or release formaldehyde.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: December 4, 1990
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Clark M. Welch, Bethlehem K. Andrews
  • Patent number: 4941884
    Abstract: Woven fabrics from blends of high and low modulus fibers provide comfort plus high durability to hard surface abrasion.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: July 17, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James R. Green
  • Patent number: 4936865
    Abstract: Catalysts for the rapid esterification and crosslinking of fibrous cellulose in textile form by polycarboxylic acids at elevated temperatures are disclosed. The catalysts are acidic or weakly basic salts selected from the alkali metal dihydrogen phosphates and alkali metal salts of phosphorous, hypophosphorous, and polyphosphoric acids. Suitable polycarboxylic acids include saturated, unsaturated and aromatic acids, as well as alpha-hydroxy acids. The textiles so treated exhibit high levels of wrinkle resistance and smooth drying properties durable to repeated laundering in alkaline detergents, and do not contain or release formaldehyde.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: June 26, 1990
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Clark M. Welch, Bethlehem K. Andrews
  • Patent number: 4851010
    Abstract: A process for graft-polymerizing vinyl monomers onto cellulose fiber materials, by reacting by a fibrous carboxymethyl cellulose peroxide having a degree of substitution for the peroxide groups from 0.02 to 0.11, with a vinyl monomer in an aqueous medium in the presence of a ferrous iron compound at a temperature from 20.degree. to 95.degree. C.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: July 25, 1989
    Assignee: Shell Oil Company
    Inventors: Seetha Coleman-Kammula, Harold Hulskers