Esterifying, Etherifying Or Immunizing Patents (Class 8/120)
  • Patent number: 4820307
    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: June 16, 1988
    Date of Patent: April 11, 1989
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Clark M. Welch, Bethlehem K. Andrews
  • Patent number: 4806254
    Abstract: An aqueous composition is provided for removing wrinkles from a fabric or garment comprising:(a) from about 10 to 60%, by weight, of one or more alcohols selected from the group consisting of ethyl, propyl and isopropyl alcohols;(b) from about 1 to 10%, by weight, of glycerine;(c) a nonionic surfactant in an amount sufficient to enhance the wettability of the fabric, and;(d) the balance waterThe process of using the de-wrinkling composition comprises spraying the composition on the wrinkled fabric or garment and then allowing same to dry.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: February 21, 1989
    Assignee: Colgate-Palmolive Co.
    Inventor: John A. Church
  • Patent number: 4689045
    Abstract: A dry fibrous product made from modified cellulose, having improved properties of absorption and water and physiological liquid retention, as well as its production procedure. The cellulose contained in a cellulose paste is activated, acrylonitrile is grafted to the cellulose while its dry content is sufficient to obtain a grafting rate of about 200%; the grafted cellulose paste is hydrolyzed with an alkali; the product is washed with water until a state of maximum expansion is reached; the product is acidified to a pH which brings it to a state of minimum expansion after the water is removed; the product is converted to its salt form in the presence of a water-miscible liquid, and under an agitation which is sufficient to prevent the clustering of the fibers; this is effected so that the quantity of water, expressed by volume, does not exceed about 10% of the liquid phase; the product is dried.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: August 25, 1987
    Assignee: La Cellulose du Pin
    Inventors: Sylviane Armagnacq, Michel Bol
  • Patent number: 4678473
    Abstract: Cellulosic fibers are converted to cellulosate by immersion in an alkali metal hydroxide and then reacted with an aqueous solution of thioarylsulfonium salts to produce modified cellulosic fibers which are substantive to acid, direct, disperse, reactive and sulfur dyes. Cellulosic/synthetic and cellulosic/wool blends can also be treated to produce a fabric blend comprising modified cellulosic components that are substantive to diverse dye classes and synthetic and wool components which are substantive to a single dye class. When using a disperse dyebath of one color the entire fabric blend is dyed one color. When adding an acid, reactive or sulfur dye of a second color to the dyebath, the synthetic or wool component is dyed one color and the cellulosic component is dyed a different color.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: July 7, 1987
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Tyrone L. Vigo, Eugene J. Blanchard
  • Patent number: 4629468
    Abstract: The treatment of cellulosic fibre materials before or after dyeing or printing with direct or reactive dyestuffs is carried out with aqueous liquors which contain quaternized polyethers which are obtained by condensation of N-2-hydroxyalkylamines of the formula ##STR1## in which R.sub.1 and R.sub.2, independently of each other, denote hydrogen or a C.sub.1 -C.sub.4 -alkyl radical andR denotes a C.sub.1 -C.sub.18 -alkyl, cycloalkyl, aralkyl or aryl radical or one of the hydroxyalkyl groups ##STR2## with the proviso that the amount of N-2-hydroxyalkylamines in which R stands for a hydroxyalkyl group accounts for no more than 20 percent by weight of the hydroxyalkylamines used,if desired by co-condensation with polyols of the formulaA(OH).sub.n IIin whichA denotes a 2-, 3- or 4-valent aliphatic, cycloaliphatic, araliphatic or aromatic radical andn is a number from 2 to 4,and subsequent quaternization.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: December 16, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Engelhard, Dieter Feuser, Udo Hendricks, Ergun Tamer
  • Patent number: 4613333
    Abstract: Textile materials containing cellulosic fibers are provided with durable press properties by reacting and crosslinking the cellulosic fibers with a durable press finishing agent consisting essentially of a silicone compound and a silicone fragmentation reactant in an effective amount to fragment the silicone compound when exposed to curing conditions. The fabric is impregnated with a finishing bath containing the durable press finishing agent and the fabric is heated to fragment the silicone compound and react and crosslink the finishing agent with the cellulosic fibers to impart durable press properties to the fabric.
    Type: Grant
    Filed: April 5, 1985
    Date of Patent: September 23, 1986
    Assignee: Springs Industries, Inc.
    Inventors: James E. Hendrix, John Y. Daniels, Taryn M. White
  • Patent number: 4563189
    Abstract: A method for treating natural textile fibres and synthetic polyamide fibres to enhance their affinity for disperse dyestuffs which comprises treating the fibres with an aqueous solution or dispersion of an arylating agent. The arylating agent contains both a benzene or naphthalene ring and a reactive group, such as a halo-triazine group. The fibres may be treated by exhaustion from long liquors or by padding, and the affinity for disperse dyestuffs is considerably increased thereby.
    Type: Grant
    Filed: February 6, 1984
    Date of Patent: January 7, 1986
    Assignee: Wool Development International Ltd.
    Inventor: David M. Lewis
  • Patent number: 4549880
    Abstract: Textile materials containing cellulosic fibers are provided with durable press properties by reacting and crosslinking a silicone compound with the cellulosic fibers. The fabric is impregnated with a finishing bath containing the silicone compound and a suitable catalyst and the fabric is heated to dry and cure and crosslink the finishing composition.
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: October 29, 1985
    Assignee: Springs Industries, Inc.
    Inventors: James E. Hendrix, John Y. Daniels, Taryn M. White
  • Patent number: 4524577
    Abstract: The twisted yarn is prepared by twisting (1) a single yarn comprising a water-insoluble fiber having a degree of water swelling of at least 10 cc/g or (2) a plurality of single yarns comprising a water-insoluble fiber having a degree of water swelling of at least 10 cc/g or a plurality of yarns comprising at least 50% by weight of such single yarns and water-nonswellable yarns so that the twist constant is at least 2.5.
    Type: Grant
    Filed: December 10, 1982
    Date of Patent: June 25, 1985
    Assignee: Kao Corporation
    Inventors: Osamu Ito, Harumasa Yamasaki, Itsuo Minakata, Kazunori Nishizawa
  • Patent number: 4423108
    Abstract: This disclosure relates to a method for imparting durable press characteristics to textile fabrics containing cellulosic fibers. The fabric is impregnated with a homogeneous composition comprising a volatile liquid carrier and certain methoxylated, phenyl-substituted fluid organosilicon polymers, and is subsequently heated to effect crosslinking of the fluid organosilicon polymers.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: December 27, 1983
    Assignee: Dow Corning Corporation
    Inventors: Robert E. Kalinowski, Gary A. Vincent
  • Patent number: 4392265
    Abstract: The method involves treating a cellulose fiber-containing structure with an alkaline agent, coating the structure with an acid chloride having the following formula: ##STR1## (wherein X is --H, --NO.sub.2, --CH.sub.3 or --SO.sub.2 Cl) and subjecting the resultant structure to heat treatment to cause chemical modification. The acid chloride is employed in the form of an emulsion in water. The emulsion may also contain a thickener such as a natural sizing agent or a dye. The method provides a more dyeable cellulose fiber-containing structure.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: July 12, 1983
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Takahiro Fujiu, Masao Nakajima, Shigeru Okano
  • Patent number: 4379918
    Abstract: Disclosed is a process for preparing water-soluble phosphonomethyl ethers of cellulose from cellulose and halogenomethane phosphonic acid or one of its salts or acid derivatives, in an aqueous, alkaline medium. The process is carried out in such a way that, for each mole of the cellulose, from about 2.1 to 15 moles of hydroxide ions and from about 0.4 to 3.0 moles of halogenomethane phosphonate ions as etherifying agent are caused to react in from about 3 to 50 parts by weight, per part by weight of the cellulose, of a mixture which is composed of an inert, preferably water-miscible organic solvent and water and in which the proportion of water ranges from about 2 to 60 percent by weight, the reaction is continued until the phosphonomethyl cellulose has a DS of at least about 0.13.
    Type: Grant
    Filed: October 20, 1981
    Date of Patent: April 12, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Lothar Brandt, Arno Holst
  • Patent number: 4378226
    Abstract: Electrically conducting fibers are prepared by introducing cyanic groups into a synthetic or natural starting fiber and then subjecting the fiber to a heat treatment with a copper compound, a reducing agent capable of reducing bivalent copper ions to monovalent copper ions, and a sulfur-containing compound capable of discharging a sulfur atom or sulfur ion for reaction with monovalent copper ions adsorbed by the fiber so that copper sulfide is impregnated into the fibers. Heat treatment with the sulfur-containing compound can be simultaneous with or separate from heat treatment with the copper compound and reducing agent. The electrically conducting fibers of the present invention have excellent conductivity, improved washability and are not plagued by the problem of static charging associated with the starting synthetic or natural fiber.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: March 29, 1983
    Assignee: Nihon Sanmo Dyeing Co., Ltd.
    Inventors: Shinje Tomibe, Reizo Gomibuchi, Kiyofumi Takahashi
  • Patent number: 4374639
    Abstract: A system for preventing static cling among textile materials such as clothes in a washer by using in a liquid bath containing the textile materials a static preventing member having a textile substrate or the like reacted with a static preventing material such as N-trisubstituted ammonium 2 hydroxy 3 halopropryl compounds or salts of epoxy propyl ammonium compounds such as glycidyltrimethylammonium chloride. Such static preventing members, and the methods of making and using same are included.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: February 22, 1983
    Assignee: Dixie Yarns, Inc.
    Inventor: Barbara T. Claiborne
  • Patent number: 4364393
    Abstract: An absorbable surgical suture material based on monocarboxycellulose having the general formula ##STR1## where: m is a degree of polymerization of the initial cellulose from 250 to 3,300;p is a molar fraction of D-glucopyranose cycles in one polymer period from 0.95 to 0.05;q is a molar fraction of cycles of d-anhydroglucuronic acid from 0.05 to 0.95;S is a molar fraction of the complex fragment of D-anhydroglucuronic acid, metal, and ligand from 0.03 to 0.55;Me is a transition metal;n is a valence of the transition metal;k is a coordination number of the transition metal .gtoreq.4;Lig is polydentate ligands;Dent is a dentation of the ligands .gtoreq.2.A method for producing said material consists in that cellulose threads are first threaded with nitrogen oxides, then for 0.5 to 2.0 hours treated with a 0.5-2.0-percent solution of a salt of a transition metal with a coordination number not less than 4 in a suitable solvent, and after this treated for 0.5 to 2.0 hours with a 1.0-2.
    Type: Grant
    Filed: April 29, 1981
    Date of Patent: December 21, 1982
    Inventors: Boris G. Yasnitsky, Galina M. Tsukanova, Valentin A. Oridoroga, Alexandr A. Shalimov, Jury A. Furmanov, Valery P. Silchenko, Sergei A. Shalimov, Yaroslav I. Khadzhai, Galina V. Obolentseva, Nikolai E. Vorobiev
  • Patent number: 4362527
    Abstract: A process for improving the radiation resistance of cellulosic fabrics is disclosed. Fabric is immersed first in a 23% caustic solution for 15 minutes and then in a 5% caustic solution for 15 minutes. The excess caustic is removed and the fabric padded to 105% wet-pickup using neutralized pentafluorobenzoic acid. The fabric is then cured at 130.degree.-140.degree. C. for 6-8 minutes.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: December 7, 1982
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Robert J. Harper, Jr.
  • Patent number: 4329383
    Abstract: Non-thrombogenic material comprising a base polymer treated with heparin, the improvement in which the heparin is covalently bonded with the base polymer through only one acetal bond or hemiacetal bond at each bonding site between the heparin and the base polymer.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: May 11, 1982
    Assignee: Nippon Zeon Co., Ltd.
    Inventor: Yasushi Joh
  • Patent number: 4312981
    Abstract: Solubilized cellulosic material is modified through a condensation reaction with organotin halides. The modified products exhibit lower heats of combustion in air than unmodified cellulose, are hydrophobic and resistant to hydrolysis, and inhibit the growth of a variety of common fungi. The modified products are useful as insulation materials, mildew and mold resistant fabrics, and as material for topical bandages.
    Type: Grant
    Filed: April 1, 1980
    Date of Patent: January 26, 1982
    Assignee: Wright State University
    Inventors: Charles E. Carraher, Jr., David J. Giron, Jack A. Schroeder, Christy A. McNeely
  • Patent number: 4256111
    Abstract: Chemically modified cellulose fibers such as those which have been subjected to phosphorylation or carboxymethylation or to polymer grafting-hydrolysis are refined in the presence of water, centrifuged to remove unbound water and extruded into filaments. The individual fibers are identifiable within the filaments and are generally aligned parallel to the filament axis. Certain embodiments of the filaments are highly absorbent, have fast wicking rates, and may be self-bonded to form integral nonwoven webs for use in disposable diapers, sanitary products, wipers and the like.
    Type: Grant
    Filed: October 1, 1973
    Date of Patent: March 17, 1981
    Assignee: Kimberly-Clark Corporation
    Inventor: Frederick O. Lassen
  • Patent number: 4248595
    Abstract: This invention relates to a process for preparing swellable cross-linked carboxyalkylcelluloses in the form of fibers, by reacting cellulose, a carboxyalkylating etherifying agent, and a cross-linking agent in an aqueous alkaline medium, comprising effecting alkalizing, etherifying, and cross-linking simultaneously in one reaction step using fibers of cellulose hydrate or fiber-based textile sheet materials which contain these fibers, by contacting said fibers or textile sheet materials which contain these fibers with an ample quantity of an aqueous alkaline reaction mixture, removing part of the reaction mixture from the fibers or the textile sheet materials contacted therewith, so that at least the quantity required for reaction is still present, and treating the fibers or the textile sheet materials containing the remainder of the aqueous alkaline reaction mixture with heat energy.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: February 3, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Lask, Arno Holst
  • Patent number: 4210747
    Abstract: A process for the preparation of viscose by adding to cellulose pulp, manufactured by alkali cooking without prehydrolysis or by acid cooking without alkali extraction, steeping lye and an organic compound, steeping the pulp to form alkali cellulose, aging the alkali cellulose, xanthating the aged alkali cellulose with carbon disulfide to obtain cellulose xanthate and dissolving the cellulose xanthate to obtain viscose.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: July 1, 1980
    Assignee: Kemira Oy
    Inventors: Erkki Sorsa, Esko Haukkovaara, Jan Fors
  • Patent number: 4204055
    Abstract: The invention is directed to cross-linked cellulose fibers wherein cellulose pulp is fluffed, aerated, and exposed to a reaction mixture comprising formaldehyde, hydrochloric acid and formic acid as finely divided droplets or vapors. The thus treated fibers are cured by subjecting the fibers to a hot air stream at a temperature of from about 180.degree.-200.degree. C. for a duration of a few seconds, followed by separation of the fibers from the gaseous effluents. The procedure which lasts less than about one minute provides cellulose fibers cross-linked with formaldehyde wherein the predominant amount of cross-linking occurs at the surface of the fibers rather than at the core of the fibers. The fibers have improved characteristics including flexibility, touch and feel, rendering the fibers highly useful in paper products.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: May 20, 1980
    Assignee: S. A. Beghin-Say
    Inventors: Claude H. Lesas, Michel Pierre
  • Patent number: 4204054
    Abstract: Fibrous structures in sheet form having from 10% to 90% by weight of pulp of cellulosic fibers cross-linked with formaldehyde, the predominant cross-linking being at the surface area of said fibers and in an amount sufficient to impart flexibility and softness to said fibers while retaining high water absorptivity, and 90% to 10% by weight of an additional binding product with the amount of the additional binding product being selected to ensure sufficient strength and cohesion to the structure of the sheet. The inclusion of the cellulosic fibers wherein the predominant amount of cross-linking is at the surface area of the fibers imparts excellent water absorptiveness to the fibrous structure and, in addition, provides good flexibility and touch and feel properties to the product.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: May 20, 1980
    Assignee: S. A. Beghin-Say
    Inventors: Claude H. Lesas, Michel Pierre
  • Patent number: 4142853
    Abstract: A process for improving the properties, particularly the dyeing properties, of cellulose fibers. The process comprises impregnating cellulose fiber with an aromatic acyl halide and thereafter immersing the impregnated fiber into an aqueous solution containing more than about 10% by weight of an alkali hydroxide to acylate the cellulose fiber on the surface portion thereof. In another embodiment of the invention, a continuous process for improving the properties of cellulose fiber yarn or fabric is provided. According to the continuous process, uniform acylation is achieved by maintaining the yarn or fabric in a stretched state during impregnation with the aromatic acyl halide and during the initial stages of immersion in the aqueous alkali hydroxide. The acylated cellulose fiber produced according to the invention may be dyed with good color fastness with disperse dyes and still retain the soft tactility characteristic of the fiber.
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: March 6, 1979
    Assignee: Shikibo Limited
    Inventors: Yasuhiko Terada, Jun Yasuda, Masao Kuriyama
  • Patent number: 4116625
    Abstract: A process for modifying a fibrous product containing cellulosic fibers which comprises treating said fibrous product with a solution or dispersion containing a particular acrylic copolymer having a glycidyl group and an alkylene oxide sidechain, drying the fibrous product; and heat-treating it in the presence of an acid catalyst at a temperature sufficient to cleave the oxirane linkage of the glycidyl group. This process can impart superior dry and wet crease resistances, shrinkage resistance and wash and wear properties and also soil removing ability, resistance to redeposition, water absorption and water penetrability to fibrous products containing cellulosic fibers while retaining their mechanical strength characterics.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: September 26, 1978
    Assignee: Daido-Maruta Finishing Co., Ltd.
    Inventor: Kazuhide Yamamoto
  • Patent number: 4113936
    Abstract: The invention relates to a process for cross-linking cellulose with formaldehyde. The pulp is fluffed, aerated and exposed to a reaction mixture comprising formaldehyde, hydrochloric acid and formic acid as finely divided droplets or vapors. The wetted fibers are then cured in a hot air stream at 180.degree. C during a few seconds and separated from the gaseous effluents. The whole procedure lasts less than 1 minute.
    Type: Grant
    Filed: October 13, 1976
    Date of Patent: September 12, 1978
    Assignee: S. A. Beghin-Say
    Inventors: Claude H. Lesas, Michel Pierre
  • Patent number: 4113431
    Abstract: A cellulose fiber derivative is provided, along with methods of its production, in order to give color features to cellulose fiber compositions while using disperse dyes. The cellulose fiber derivative includes an acyl group of formula ##STR1## wherein X.sub.1, X.sub.2, Y.sub.1, Y.sub.2 and Z are selected individually from the group consisting of hydrogen, halogen, alkyl, nitro, methoxy, phenylazo or amino, introduced into said cellulose fiber through chemical reaction with the hydroxyl groups of said cellulose fiber to the extent of a substitution degree of more than 0.10.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: September 12, 1978
    Assignee: Shikibo Limited
    Inventors: Yasuhiko Terada, Jun Yasuda, Masao Kuriyama
  • Patent number: 4107426
    Abstract: A water-repellent cellulose and articles comprising the water-repellent cellulose are disclosed together with a process and apparatus for preparing the same. The water-repellent cellulose is prepared by exposing one or more sides and edges of a cellulose sheet, pad, or cloth to aliphatic acid chloride vapors. The resulting product is water-repellent along the treated sides and edges and, in general, water-permeable along the untreated sides and edges. Therefore, the treated cellulose products of this invention are especially suitable for disposable articles of sanitary clothing, sanitary napkins, bandaging materials, paper cups, bags and the like.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: August 15, 1978
    Inventor: Roy Gerald Gordon
  • Patent number: 4097643
    Abstract: An improved composition is disclosed which consists of organic resins and silanes. The compositions are useful finishing resins for textiles, fibers and paper. An example of the improved composition is a copolymer resin containing at least one type of acrylic acid ester combined with at least one type of unsaturated aliphatic acid and, a silane containing epoxy groups.
    Type: Grant
    Filed: January 7, 1977
    Date of Patent: June 27, 1978
    Assignee: Toray Silicone Company, Ltd.
    Inventor: Yoshiyuki Hasegawa
  • Patent number: 4092107
    Abstract: A process is provided for finishing fabric containing cellulose fibers to improve its crease resistance, soil release and wet soiling properties while retaining a hand similar to that of the fabric prior to finishing wherein a latex containing a cross-linkable resin which will impart crease resistance to a fabric contains the polymerization product of a mixture of from 70% to about 97% by weight of an ester of acrylic acid and a saturated monohydric alcohol having 1 to 8 carbon atoms and from about 30 to 3% of an ester of acrylic acid and an unsaturated monohydric alcohol having 2 to 5 carbon atoms.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: May 30, 1978
    Assignee: Akzona Incorporated
    Inventors: Heinz Beck, Gerhard Schlichtmann
  • Patent number: 4090844
    Abstract: Wrinkle resistance, soil release, improved breaking strength and abrasion, and durable deodorant (bacteriostatic) quality are a plurality of useful properties imparted to cotton by a process with chemicals which include polyfunctional crosslinking compounds, zinc salts of polymerizable acrylic-type acids, and basic persulfates. The fabric is impregnated, heat-fixed, and cured by conventional methods and employing conventional equipment.
    Type: Grant
    Filed: June 23, 1977
    Date of Patent: May 23, 1978
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Stanley P. Rowland
  • Patent number: 4089649
    Abstract: Hydrophilic additives are provided which may be introduced into fibrous articles to provide improved water absorbency and charge dissipation properties which resist abrasion and laundering. The fibrous articles are treated by contacting the articles with at least one hydrophilic additive, polyfunctional reactant and nitrogen catalyst under conditions sufficient to incorporate hydrophilic additive, polyfunctional reactant and nitrogen catalyst in the articles, followed by heating the fibrous articles to obtain the desired fiber characteristics.
    Type: Grant
    Filed: March 4, 1976
    Date of Patent: May 16, 1978
    Assignee: Allied Chemical Corporation
    Inventors: Frank Mares, Theodore Largman
  • Patent number: 4087246
    Abstract: Hydrophilic additives are provided which may be introduced into fibrous articles to provide improved water absorbency and charge dissipation properties which resist abrasion and laundering. The fibrous articles are treated by contacting the articles with at least one hydrophilic additive and nitrogen catalyst under conditions sufficient to incorporate additive and catalyst in the article, followed by heating the treated article to obtain the desired fiber characteristics.
    Type: Grant
    Filed: March 4, 1976
    Date of Patent: May 2, 1978
    Assignee: Allied Chemical Corporation
    Inventors: Frank Mares, Theodore Largman
  • Patent number: 4082500
    Abstract: Certain chemically modified cotton fabrics have been treated with vapors of glycidol at reduced pressures in a heated chamber to impart improved wet and dry wrinkle recovery characteristics.
    Type: Grant
    Filed: May 6, 1977
    Date of Patent: April 4, 1978
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Truman L. Ward, Ruth R. Benerito
  • Patent number: 4078140
    Abstract: The invention relates to a new substance, namely 2,3-di-(2,3-diiodopropoxy)-propyl cellulose and to the production of the same by the action of a dihalogenopropyl ether of cellulose with an alkali metal allylate with iodine addition to the resulting 2,3-di-allyloxy propyl cellulose.
    Type: Grant
    Filed: June 23, 1977
    Date of Patent: March 7, 1978
    Assignee: Neste Oy
    Inventors: Alain Roman, Jean-Pierre Sachetto, Manfred Wust, Sergio Cuccolo
  • Patent number: 4065256
    Abstract: A shaped article of hydrophobic synthetic polymer is graft polymerized uniformly and economically in a high yield, and consequently is endowed with various advantageous properties, when it is treated in an aqueous emulsified dispersion having dispersed in water an hydrophobic radical polymerization initiator, an organic solvent which is liquid at normal room temperature, naphthalene and an unsaturated monomer containing in the molecular unit thereof at least one double bond capable of radical polymerization.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: December 27, 1977
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kikuji Igeta, Masakatsu Ohguchi
  • Patent number: 4063885
    Abstract: A single treatment process for imparting durable soil release and soil repellent properties to cotton fabrics and to cotton polyester blend fabrics with widely different constructions and compositions comprising free radical initiated reactions of a vinyl monomer that contains carboxyl functional groups with cotton and polyester in the fabrics, is described. Of special interest is the unusually high efficiency of removal of both aqueous soils and oily soils from the treated fabrics and the unusually high durability of the properties of treated cotton fabrics and cotton polyester blend fabrics with widely different constructions and compositions to laundering and cleaning.
    Type: Grant
    Filed: February 6, 1976
    Date of Patent: December 20, 1977
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Trinidad Mares, Jett C. Arthur, Jr., James A. Harris
  • Patent number: 4052158
    Abstract: A process for producinga wash-durable finish on a textile is provided which comprises applying to the textile an effective amount of:A. at least one free-radical polymerizable monomer having a functional group capable of undergoing an acid catalyzed condensation reaction withB. at least one co-reactant having a reactive methylol, hydroxy, alkoxy or amino group capable of undergoing acid-catalyzed condensation with a reactive group on said free radical polymerizable monomer;C. at least one free radical generating catalyst and at least one acid catalyst, or at least one catalyst having both free radical generating and acidic characteristics, andD. subjecting said textile to curing conditions to conjointly effect free radical polymerization and acid-catalyzed condensation reactions.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: October 4, 1977
    Assignee: Stauffer Chemical Company
    Inventor: Edward D. Weil
  • Patent number: 4038027
    Abstract: Soil release and stain resistance properties of cellulosic textile materials are improved by reacting a cellulosic textile material with a water-soluble synthetic polymer acid or anhydride. After impregnating the cellulosic material with a synthetic polymer acid or anhydride and an esterification catalyst, the impregnated material is dried and subsequently cured in order that the polymer may react with the cellulosic material in the presence of the esterification catalyst. The material is then washed to yield the finished product. This procedure is applicable to fibers, yarns and manufactured cloths of various hydroxyl-containing polymers such as cotton, cotton-containing materials and blends of cellulosic materials with various synthetics such as polyesters.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: July 26, 1977
    Assignee: The Bibb Company
    Inventor: John A. Kearney
  • Patent number: 4036588
    Abstract: A process for increasing the water-absorbency of cellulose-containing materials by graft-copolymerizing onto said material a vinyl monomer containing a hydrophilic group and treating the graft-copolymerized material with a decrystallizing agent for cellulose.
    Type: Grant
    Filed: March 9, 1976
    Date of Patent: July 19, 1977
    Assignee: Research Corporation
    Inventors: Joel Lawson Williams, Vivian Thomas Stannett
  • Patent number: 4032992
    Abstract: The method of treating a textile fabric comprising cellulosic fibers to produce a modified fabric intermediate from which permanently shaped wearing apparel having an improved dry crease recovery can be made, comprising the steps of: (1) impregnating the material with a cellulose cross-linking reagent selected from the groups consisting of: (a) reaction products of formaldehyde with carboxamides wherein said reaction products contain 2 or 3 N-methylol groups and methyl ethers thereof; (b) compounds having the following generic formula:R.sub.1 OCH.sub.2 CH.sub.2 SO.sub.2 (QSO.sub.2).sub.n CH.sub.2 CH.sub.2 OR.sub.2where R.sub.1 and R.sub.
    Type: Grant
    Filed: October 17, 1969
    Date of Patent: July 5, 1977
    Assignee: J. P. Stevens & Co., Inc.
    Inventors: Ildo Emil Pensa, Robert Otto Rau
  • Patent number: 4032293
    Abstract: Strong base quaternary ammonium cellulose derivatives prepared under anhydrous conditions are further chemically modified in selected organic solvents by a sequential process that produces a partial cellulose ether in fibrous form that can be used in electro-chemical reactions covering a range of oxidation-reduction potentials. These new derivatives can be prepared such that they stabilize a given anion in the cellulose matrix until such time as its oxidation or reduction power is needed in desired chemical reactions. Although prepared in nonaqueous media, these red-ox cellulosic anion exchangers can be used to regulate oxidation-reduction reactions in aqueous media. Some of these new red-ox anion exchangers are dispersible in water and can be reprecipitated by organic solvents without losing their red-ox abilities during the process. Others are water insoluble.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: June 28, 1977
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Dorothy M. Perrier, Ruth R. Benerito, Richard H. Steele
  • Patent number: 3997647
    Abstract: Chemically modified cellulose fibers such as those which have been subjected to phosphorylation or carboxymethylation or to polymer grafting-hydrolysis are refined in the presence of water, centrifuged to remove unbound water and extruded into filaments. The individual fibers are identifiable within the filaments and are generally aligned parallel to the filament axis. Certain embodiments of the filaments are highly absorbent, have fast wicking rates, and may be self-bonded to form integral nonwoven webs for use in disposable diapers, sanitary products, wipes and the like.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: December 14, 1976
    Assignee: Kimberly-Clark Corporation
    Inventor: Frederick O. Lassen
  • Patent number: 3989454
    Abstract: Grafted cotton-poly(ethyl acrylate) copolymer and grafted mercerized cotton-poly(ethyl acrylate) copolymer have been prepared by a process which equates their reactivity. The process discloses the reaction of irradiated cotton and irradiated mercerized cotton with certain solutions of ethyl acrylate in either water, methanol, or mixtures thereof to yield the copolymer derivatives which have responded equally and do respond equally to further treatments.
    Type: Grant
    Filed: September 28, 1973
    Date of Patent: November 2, 1976
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Jett C. Arthur, Jr., Yoshio Nakamura, Oscar Hinojosa
  • Patent number: 3989457
    Abstract: A process is described for obtaining finishing effects on textile material consisting, at least partially, of cellulose fibers, without seriously reducing the tensile strength, tearing strength or wearing strength of the fibers. A finishing agent, capable of cross-linking with the hydroxy groups of the cellulose fibers, in a solution or emulsion containing a mixture of water and at least one organic solvent, such as low aliphatic ketones, aliphatic chlorinated hydrocarbons or low aliphatic esters, is applied to the textile material. The stability of the mixture is controlled by a salting-in or salting-out effect so as to induce a phase separation between aqueous and solvent phase, this effect being induced by the use of neutral salts, acid salts, potentially acid salts, organic acids, synthetic resins or reactants. The finishing agent is concentrated in the aqueous phase in the interior of the individual fibers while the surface zones retain the good surface properties of the starting material.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: November 2, 1976
    Assignee: Heberlein & Co. AG
    Inventor: Walter Marte
  • Patent number: 3971627
    Abstract: Disclosed are epoxy-azido compounds of the formula ##EQU1## WHERE R is a polyvalent organic radical, R' is a hydrogen, alkyl, cycloalkyl, aryl, or aralkyl radical, A is ##EQU2## and n and m are integers from 1 to 100. Also disclosed is the use of said epoxy-azido compounds in modifying polymers, cross-linking polymers, and adhering polymers to certain substrates, e.g. glass and other polymers.
    Type: Grant
    Filed: June 24, 1975
    Date of Patent: July 27, 1976
    Assignee: Hercules Incorporated
    Inventor: David S. Breslow
  • Patent number: 3971379
    Abstract: An absorbent body is provided for use in such products as catamenial napkins and tampons, diapers, wound dressings and the like, which body incorporates hydrophilic, wet resilient, swellable, cellulosic fibers produced by a single reaction treatment of cellulose. The cellulose fibers are treated with an agent which renders the fibers hydrophilic while simultaneously crosslinking them with a crosslinking radical having the structure: ##EQU1## where X is chosen from the group consisting of H or COOY: Y is chosen from the group consisting of Na, K, Li, Ce or H; and k, m and n are integers ranging from 0 to 4.
    Type: Grant
    Filed: April 4, 1975
    Date of Patent: July 27, 1976
    Assignee: Personal Products Company
    Inventor: Pronoy Kumar Chatterjee
  • Patent number: 3966484
    Abstract: The present invention relates to a composition for the sizing of materials containing cellulosic fibers (e.g. paper) by the use of carbamoyl chlorides.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: June 29, 1976
    Assignee: Kemanord Aktiebolag
    Inventors: Karin Ulla Elisabet Helmer, Alf Ragnar Reuterhall
  • Patent number: 3963433
    Abstract: Partially Aminoethylated cotton fabric is reacted with either propylene carbonate (4-methyl 1,3 dioxol-2-one) or ethylene carbonate (1,3 dioxol-2-one) with potassium carbonate as catalyst. Reaction is carrid out in a heated vacuum oven. The resultant product has urethane crosslinks and improved wrinkle recovery properties.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: June 15, 1976
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Truman L. Ward, Ruth R. Benerito
  • Patent number: 3963434
    Abstract: Partially carboxymethylated-cotton fabric prepared by a non-aqueous procedure is reacted with either ethylene carbonate or propylene carbonate in a heated, evacuated oven. The product of either reaction is a fabric with high conditioned and high wet wrinkle recovery.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: June 15, 1976
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Truman L. Ward, Ruth R. Benerito, Dorothy M. Perrier