Patents by Inventor Pierre Chion

Pierre Chion has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4780368
    Abstract: The present invention relates to filaments based on a mixture of atactic polyvinyl chloride and postchlorinated polyvinyl chloride, and also to the process for their production.The filaments according to the present invention possess a residual shrinkage in boiling water of less than 2%, a modulus of elasticity of more than 3 kN/mm.sup.2 and a shrinkage stress, after shrinkage in an aqueous fluid medium at a temperature between 98.degree. and 130.degree. C., which is greater than or equal to 1.6.multidot.10.sup.-2 g/dtex.The filaments are obtained by spinning and stretching in a manner which is in itself known, then continuous stabilization under tension, at a temperature between 105.degree. and 125.degree. C., in the presence of steam under pressure, for 1 to 3 seconds, and then shrinkage in an aqueous fluid medium at a temperature between 98.degree. and 130.degree. C.
    Type: Grant
    Filed: February 3, 1986
    Date of Patent: October 25, 1988
    Assignee: Rhovyl
    Inventors: Georges Achard, Pierre Chion, Jacques Menault
  • Patent number: 4681595
    Abstract: The present invention relates to a process for continuous dyeing of filaments based on atactic polyvinyl chloride in the course of production.It comprises, in succession, the phases of drawing, impregnation of the filaments by padding while, at the time of the impregnation, the filaments have a density of between 1.3 and 1.4 g/cm.sup.3 (the filament roving having a water content of 10 to 30% by weight), of stabilization under tension in the presence of steam under pressure at a temperature between 100.degree. and 130.degree. C. for 2 to 20 seconds, and then oiling and shrinking in a known manner.Dyeing carried out in this manner is quick and makes it possible to produce colors having good fastness.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: July 21, 1987
    Assignee: Rhovyl
    Inventors: Pierre Chion, Jacques Menault
  • Patent number: 4681594
    Abstract: The invention relates to a process for continuous dyeing of filaments based on atactic polyvinyl chloride in the course of their production.The undrawn filaments are impregnated with a composition containing at least one plastosoluble dye while they have a density of between 1.3 and 1.4 g/cm.sup.3, are fixed continuously in the presence of steam under pressure at a temperature of between 100.degree. and 120.degree. C. for 2 to 20 seconds, are drawn in a known manner, are then fixed under tension in the presence of steam under pressure at a temperature of between 100.degree. and 130.degree. C. for 1 to 20 seconds, and are then oiled and shrunk in a known manner.Such a process permits quick dyeing, on an industrial scale, with good color fastness.
    Type: Grant
    Filed: March 11, 1986
    Date of Patent: July 21, 1987
    Assignee: Rhovyl
    Inventors: Pierre Chion, Jacques Menault
  • Patent number: 4454091
    Abstract: The present invention relates to new polymer solutions which make it possible to obtain shaped articles such as yarns and fibres, films, sheets and the like.These solutions consist of cellulose having a degree of polymerization of at least 200, polyvinyl chloride, dimethyl sulphoxide and formaldehyde, the weight ratio cellulose/polyvinyl chloride being 0.05 to 0.5, preferably 0.1 to 0.5, the ratio formaldehyde/cellulose being 0.2 to 2 and the total polymer concentration being 6 to 20%, preferably 10 to 18%.Such solutions are particularly suitable for the manufacture of filaments consisting of fibrils substantially orientated along the axis of the fibre and closely interlaced, the cellulose macromolecules being partially involved in a crystal lattice characteristic of cellulose II. The filaments possess valuable properties for textile use.
    Type: Grant
    Filed: June 10, 1981
    Date of Patent: June 12, 1984
    Assignee: Rhone-Poulenc-Textile
    Inventors: Pierre Chion, Jacques Menault, Henry Rodier, Jean-Paul Sacre
  • Patent number: 4363895
    Abstract: The present invention relates to new polymer solutions which make it possible to produce shaped articles, such as yarns and fibres, films, sheets and the like.These solutions consist of cellulose having a degree of polymerisation of at least 200, polyamide-imide, dimethyl sulphoxide and formaldehyde, with a weight ratio cellulose/polyamide-imide of 0.05 to 1, preferably 0.1 to 1, a ratio formaldehyde/cellulose of 0.2 to 2 and a total concentration of 6 to 25%, preferably 15 to 20%.These solutions are particularly suitable for the production of filaments which consist of fibrils substantially orientated along the axis of the fibre and closely intersecting, the cellulose macromolecules being partially involved in a crystal lattice characteristic of cellulose II. The filaments possess valuable properties for use in textiles.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: December 14, 1982
    Assignee: Rhone-Poulenc-Textile
    Inventors: Pierre Chion, Jacques Menault, Henry Rodier
  • Patent number: 4308004
    Abstract: The present invention relates to a process and a device for the production of bi-component yarns containing bilaminar and multilaminar filaments.Two polymer compositions are spun after feeding through a dichotomic mixer possessing tubes of identical internal diameter (5 to 25 mm), inside which 4 to 9 helical elements are placed in series, the leading edge of each of the elements being placed at 90.degree. relative to the trailing edge of the previous element. The process and device according to the invention can be used for all types of spinning, namely solution spinning, melt spinning, semi-melt spinning and the like. The yarns obtained contain only a minor proportion of monolaminar filaments.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: December 29, 1981
    Assignee: Rhone-Poulenc-Textile
    Inventors: Pierre Chion, Robert Cuidard, Jean Pommier, Marc Tricot
  • Patent number: 4307054
    Abstract: The present invention relates to a process and a device for the production of bi-component yarns containing bilaminar and multilaminar filaments.Two polymer compositions are spun after feeding through a dichotomic mixer possessing tubes of identical internal diameter (5 to 25 mm), inside which 4 to 9 helical elements are placed in series, the leading edge of each of the elements being placed at 90.degree. relative to the trailing edge of the previous element. The process and device according to the invention can be used for all types of spinning, namely solution spinning, melt spinning, semi-melt spinning and the like. The yarns obtained contain only a minor proportion of monolaminar filaments.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: December 22, 1981
    Assignee: Rhone-Poulenc-Textile
    Inventors: Pierre Chion, Robert Cuidard, Jean Pommier, Marc Tricot
  • Patent number: 4297412
    Abstract: The present invention relates to two-component acrylic fibres and yarns and their process of preparation.They consist of two copolymers based on acrylonitrile, in which the proportion of plasticizing comonomer differs by between 4 and 15% and which contain a total number of milliequivalents of acid of at least 50 per kg of polymer; they comprise a mixture of monolaminar, bilaminar and multilaminar strands; they possess a crimp, the direction of which depends on the heat and/or mechanical treatments to which they have been subjected, component B, which contains the smaller proportion of plasticizing comonomer, being located on the inside of the helix formed by the filaments, after treatment, without tension, at a temperature which is below about 110.degree. C. and at least equal to ambient temperature, and being located on the outside of the helix after treatment under tension or after heat treatment at a temperature above 110.degree. C.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: October 27, 1981
    Assignee: Rhone-Poulenc-Textile
    Inventors: Georges Achard, Pierre Chion, Jacques Menault
  • Patent number: 4256684
    Abstract: Acrylic yarns and fibers having a high shrinkage power, ranging up to 50%, obtained by wet spinning, a stretching of 1.3 to 3 .times. in air, washing, a stretching of 1 to 2.5 .times. into boiling water, drying, steaming at 105.degree.-150.degree. C., over-stretching of 1.2 to 2 .times. at 90.degree.-100.degree. C.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: March 17, 1981
    Assignee: Rhone-Poulenc Textile
    Inventors: Georges Achard, Gilbert Anouilh, Pierre Chion, Roger Vincent
  • Patent number: 4052550
    Abstract: A process of making polyvinylidene fluoride yarns and fibers of homogeneous structure and good dry strength includes the steps of spinning the solution of the polymer into a coagulating bath containing 45 to 60% by weight aprotic polar organic solvent and 40 to 55% by weight water, stretching the filaments in air to a ratio of 1.5 to 5x and then in boiling water to a ratio of 1.5 to 4x (overall stretching ratio of 3x to 6.5x) and then washing in water at room temperature.
    Type: Grant
    Filed: January 29, 1976
    Date of Patent: October 4, 1977
    Assignee: Rhone-Poulenc-Textile
    Inventors: Pierre Chion, Robert Cuidard
  • Patent number: 3965232
    Abstract: A process of making polyvinylidene fluoride yarns and fibers of homogeneous structure and good dry strength includes the steps of spinning the solution of the polymer into a coagulating bath containing 45 to 60% by weight aprotic polar organic solvent and 40 to 55% by weight water, stretching the filaments in air to a ratio of 1.5 to 5x and then in boiling water to a ratio of 1.5 to 4x (overall stretching ratio of 3x to 6.5x) and then washing in water at room temperature.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: June 22, 1976
    Assignee: Rhone-Poulenc-Textile
    Inventors: Pierre Chion, Robert Cuidard