Oxidizing Or Alkaline Agent Patents (Class 8/115.69)
  • Publication number: 20100024134
    Abstract: Durable stretch fabrics are made and processed from one or more crosslinked, heat-resistant olefin elastic fibers, e.g., a substantially linear, homogeneously branched ethylene polymer. The fabrics can be made by any process, e.g., weaving, knitting, etc., and from any combination of crosslinked, heat-resistant olefin elastic and inelastic (“hard”) fibers, e.g., cotton and wool. These fabrics exhibit excellent chemical, e.g., chlorine, resistance and durability, e.g., they retain their shape and feel (“hand”) over repeated exposure to processing conditions, e.g., stone-washing, dye-stripping, PET-dyeing and the like, and service conditions, e.g., washing, drying, etc.
    Type: Application
    Filed: August 5, 2009
    Publication date: February 4, 2010
    Applicant: Dow Global Technologies Inc.
    Inventors: Rona L. Reid, Thoi H. Ho, Selim Bensason, Rajen M. Patel, Antonio Batistini
  • Publication number: 20090013662
    Abstract: A polyester combined-filament yarn having an excellent stretch property and a bathochromic effect, as well as uniformity of apparent dyed color density, comprises two different multifilament components (A) and (B), wherein the multifilament component (A) comprises polyester filaments composed of polyethylene terephthalate (PET) polymer, a metal-containing phosphorus compound (a) and an alkaline earth metal compound (b), and a conjugate multifilament component (B) comprises side-by-side or eccentric core-sheath conjugate polyester filaments composed of two mutually different polyester resins (at least one of which is polytrimethylene terephthalate resin), the mass ratio (A)/(B) of components (A) and (B) is in the range of 80/20 to 50/50. Woven or knitted fabrics comprising the combined-filament yarn are useful for women's and men's fashion apparel and black formals.
    Type: Application
    Filed: July 27, 2005
    Publication date: January 15, 2009
    Applicant: TEJIN FIBERS LIMITED
    Inventor: Ryuji Uemura
  • Patent number: 7147669
    Abstract: Excellent water repellency and Oil repellency are imparted to a textile by a method including (1) preparing a treatment liquid comprising a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent comprises at least one fluorine-containing compound selected from the group consisting of a fluorine-containing polymer and a fluorine-containing low molecular weight compound, and the water- and oil-repellent agent or the treatment liquid contains a cationic emulsifier and/or a salt.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: December 12, 2006
    Assignee: Daikin Industries, Ltd.
    Inventors: Fumihiko Yamaguchi, Ikuo Yamamoto, Kayo Kusumi
  • Patent number: 7087093
    Abstract: Fibers are modified by applying a solution of a low substituted cellulose ether having a molar degree of substitution with alkyl and/or hydroxyalkyl groups in the range of 0.05 to 1.0 in an aqueous alkali solution to fibers, and causing the solution borne on fibers to coagulate. The method achieves satisfactory fiber modifications with respect to antistatic property, moisture absorption and shrink resistance without a cumbersome step of dissolution while ensuring safety.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: August 8, 2006
    Assignee: Shin-Etsu Chemicals Co., Ltd.
    Inventors: Soji Tanioka, Sakae Obara
  • Patent number: 6962608
    Abstract: The present invention provides durable and regenerable antimicrobial fibers and methods for preparing the same. These fibers have excellent colorfastness and washfastness, and are environmentally friendly. The antimicrobial fibers of this invention are suitable for a variety of purposes, including medical uses, sportswear, and uniforms.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: November 8, 2005
    Assignee: The Regents of the University of California
    Inventors: Gang Sun, Louise Ko Huang
  • Patent number: 6863697
    Abstract: In a preferred embodiment, the present process involves subjecting a fabric having splittable conjugate yarns both to an acidic treatment and to a basic treatment, each of which erodes a portion of the components of the conjugate yarns. The acid treatment, given certain reaction kinetics, removes a portion of the polyamide element of the conjugate filament. The basic treatment has a similar effect on the polyester element of the conjugate filament, making it more hydrophilic. The at least partial removal of the polyamide component, coupled with the increased hydrophilicity of the polyester component, results in a fabric having enhanced absorptive properties. In an alternate embodiment, treatments with only acid or only basic solution may be employed.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: March 8, 2005
    Assignee: Milliken & Company
    Inventors: John Scott McDaniel, Kirkland W. Vogt, Woodrow P. Gilbert
  • Patent number: 6736856
    Abstract: The invention provides a production method capable of reducing the amount of the chemical liquid (hydrazine and sodium carbonate, etc.) for applying a crosslinking treatment and a hydrolytic treatment, capable of shortening the treatment time, and capable of obtaining crosslinked acrylic moisture absorbing fibers having a sufficient moisture absorbing-moisture releasing performance and provides crosslinked acrylic moisture absorbing fibers. In the case of producing the crosslinked acrylic moisture absorbing fibers by applying a crosslinking treatment and a hydrolytic treatment to acrylic fibers, acrylic fibers made of a copolymer containing from 1 to 5% by weight a comonomer having an acidic group as a comonomer component are used as the raw material fibers to be treated.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: May 18, 2004
    Assignee: Toho Tenax Co., Ltd.
    Inventors: Hayashi Takahashi, Hideo Matsumoto
  • Patent number: 6691358
    Abstract: The invention refers to a method for an integrated treatment of cellulose pulp. The method includes the steps: providing said cellulose pulp (1), providing a determined quantity of white liquor (2) including alkali and sulphur components, providing an oxygen-containing gas, oxidizing (5) the sulphur components of the white liquor by the supply of a part of said gas in such a way that at least a part of the sulphur is present in the form of sulphate, transporting the cellulose pulp having a certain kappa number to at least one mixing device (4), and supplying the oxidized white liquor from the oxidizing step to the cellulose pulp, supplying a part of said gas to the cellulose pulp in said mixing device, mixing the cellulose pulp with the oxidized white liquor and said gas in said mixing device, and transporting the cellulose pulp from said mixing device to a delignification reactor (6) for oxygen delignification of said cellulose pulp, wherein the kappa number is reduced.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: February 17, 2004
    Assignee: AGA Aktiebolag
    Inventors: Anders Tor Jörgen Engström, Anna Tigerström
  • Publication number: 20020090872
    Abstract: This invention relates to antimicrobial fabrics which are treated with a specific durable and regenerable halamine/chlorine system and methods of removing residual active chlorine from the target textile surface without reducing the antimicrobial activity of the textile. Such methods comprise contacting an amine-treated fabric first with a halogen-based bleach (or other halogenated liquid) to produce halamines at the fabric surface, and subsequently washing the resultant halogenated fabric with a reducing agent which removes the residual, unbonded halogen (such as chlorine) from the fabric surface but does not, surprisingly, remove the halamine halogen. The remaining halamine halogen thus provides the desired antimicrobial activity.
    Type: Application
    Filed: July 27, 1999
    Publication date: July 11, 2002
    Inventor: SHULONG LI
  • Patent number: 6241783
    Abstract: Improved methods for durable and regenerable antimicrobial finishing of fabrics are disclosed. In certain embodiments, the methods reduce the amount of free-formaldehyde released during processing by using a formaldehyde scavenger such as a polyol. The improved process imparts regenerable antimicrobial functions to cellulose articles including textiles, papers, wood pulp, and any cellulose-containing materials. The treated product acquire antimicrobial properties after being treated with a halogenated solution.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: June 5, 2001
    Assignee: The Regents of the University of California
    Inventor: Gang Sun
  • Patent number: 6217621
    Abstract: Matrix-dyed textiles of cellulose acetate, cellulose triacetate, silk, wool, flax, nylon, acrylic, polyethylene terephthalate, cotton, and rayon are stripped of their dyes in a dye stripping system comprising a reducing agent in an aqueous bath produced by the reaction of a bisulfite with about 0.35% or less of a borohydride by weight of the textile. The borohydride may be added to an aqueous bath already containing the bisulfite and the textile or the borohydride and bisulfite may be mixed in an add tank and the mixture added to the aqueous bath. Chelating agents, sequestering agents, fire retardants, and odor scavengers are not needed. Reclaimed textiles having superior receptivity of a new dye are provided.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: April 17, 2001
    Assignee: Morton International Inc.
    Inventors: Peter Modebelu, Harrie Schoots, Jeremy Ko