US2004272A - Production of artificial products - Google Patents

Production of artificial products Download PDF

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Publication number
US2004272A
US2004272A US552545A US55254531A US2004272A US 2004272 A US2004272 A US 2004272A US 552545 A US552545 A US 552545A US 55254531 A US55254531 A US 55254531A US 2004272 A US2004272 A US 2004272A
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United States
Prior art keywords
products
liquid
spinning
filaments
cellulose
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Expired - Lifetime
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US552545A
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English (en)
Inventor
Dreyfus Henry
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Henry Dreyfuss Associates LLC
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Henry Dreyfuss Associates LLC
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof

Definitions

  • products were obtainable of fine denier or small cross-section and of high-strength.
  • the viscose, cuprammonium cellulose or other solution of cellulose or cellulose derivative adapted to yield products of regenerated cellulose is extruded into a liquid which is a' non-solvent for the cellulose or for the cellulose derivative and is a non-solvent for the solvent of the spinning solution, for instance water in the case of viscose.
  • Hydrocarbons or halogenats' the extruded filaments or other products sink or are drawn downwards through the bath of benzene or other light liquid.
  • the specific gravity of the viscose or other spinning solution may it self be adjusted, if desired, as for example by adjustingits concentration or by means of additions made thereto with the object of increasing the specific gravity.
  • a liquid which is heavier than theviscose or otherspinning solution may be used, "and the viscose or other spinning solution extruded vertically upwards or upwards at an angle into the heavy liquid, and the filamentsor other products be-' ing drawn oif or allowedi tdrise through the l If; i i
  • Startingjup may, forexamp'le, be effected by spinning initially.
  • the bath characteristic o'ftheprese ent inVention may be thereafter introduced so that thefilaments or other products are already being drawn from the nozzle before the introduction of the said bath.
  • the invention also includes a process in which some elimination of the solvent of the spinning solution takes place in the preliminary stage of.
  • the liquid may be such'that it dissolves out a proportion of the waterused assolvent in the spinning solution.
  • liquids which themselves have V a small solvent power for water may be used, or alternatively the hydrocarbons, halogenated hydrocarbons or. other water repellent liquids referredto above may fb'e mixed with alcohol, 'acetic acid, formic acid, lactic acid or other liquids which are adapted to confer thereon a small solvent power for water, "andwhich are at the same time non-solvents for the cellulose xanthate or other base contained in the spinning solution.
  • the amount of water'thus abstracted from thefilamentsor other products should not however be sufficient to prevent their being liq-' uid orsubstantially liquid on the completion of this preliminary stage of their formation.
  • the length of preliminary bath of hydrocarbon, halogenated hydrocarbon or other suitable liquid which the filaments or other products are formed may vary very widely. It depends to some extent upon the amount of drawdown if any, which is applied and on the viscosityof the spinning solution. In most cases a length up to a 'few inches suflices to produce the advantages of the present invention
  • the filaments or other products which may,
  • the coagulation may be such as to effect a simultaneous conversion of theviscose, cuprammonium cellulose .orthe like into cellulose, as is the case in'the art as'practised today,
  • the viscose may be coagulated in the form of a metallic or ammonium cellulose xanthate and subsequently treated to regenerate the cellulose.
  • the regeneration of the cellulose is preferably effected by means of strong mineral acids or acid esters thereof or by means of sulphonic acids or other organo mineral acids (comparemy, prior U. S. application S. No. 456,872 filed 8th May,
  • benzene or other light hydrocarbon or liquid may be floated on the top of the coagulating bath, the filaments sinking or being drawn through the layer of benzene or like liquid into the coagulating bath wherein they may be ccagulated either in the form of cellulose itself or as xanthate and then carried round suitable guides and finally out of the bath.
  • any ordinary tank or other device customarily employed to contain the coagulating liquid maybe provided: with a partition across the full width of the container but not reachingto the bottom thereof; the container may be partially filled with the coagulating liquid proper atleast as far up as the bottom of the partition and then the benzene or other light liquid may be poured into one side only; of the partition. The spinning nozzle may then be immersed in the benzene or other light liquid, the filaments orbther products. carried down into the coagulati'ng liquid, underneath the partition and finally out of the bath.
  • the container may be partially filled with the heavy liquid and the coagulating bath proper poured in so as to form a layer on the top.
  • the spinning nozzle may be immersed at the bottom of the bath and the filaments or other products drawn up through thetwo layers of liquid.
  • the coagulatingliquid used according to the present invention may consist, in the case of viscose, of compartively dilute mineral acids, for example sulphuric acid of to or strength, for preference mixed with sodium bisulphate or other salts and/or having additions of glucose or other sugars or like substances, or in the case of cuprammonium solutions of cellulose may consist of relatively dilute caustic soda or other suitable alkaline coagulating liquids. erated may then be treated with a string mineral acid or other agent adapted to exert a solvent, softening or incipient solvent action thereon. Such solvent action may be allowed to develop on the filaments or other products by a concentration of the mineral acid or other reagent employed in the coagulating bath itself.
  • the coagulation and reextruded from a jet is led under thepartition by means of guides? and 8, then round a guide ii to a draw-roller it. From the roller it proceeds to a suitable winding or twisting and winding device, e. g. a bobbin H which may rotate in a washing liquid contained in a vessel 52.
  • a suitable winding or twisting and winding device e. g. a bobbin H which may rotate in a washing liquid contained in a vessel 52.
  • the partition l may be made removable, being inserted only after the thread has been led round the thread guides l, 8 and 9 to the feed roller I D.
  • a spinning vessel [5 is provided with a spinning nozzle it connected with a candle filter i1 pivoted at N3, the spinning nozzle being adapted. to spin upwardly.
  • the filaments 5 produced are conducted round the feed roller !9, to a thread guide 2%, through a bath 2i containing a softening liquid, and thence round the roller 22 to a bobbin or other suitable winding device 23, the said bobbin being rotated in running water or sprayed with water from a suitable device 2 5.
  • This particular form of apparatus is suitable for carrying out the process inwhich the coagulating liquid 26 is lighter than the medium 27 from which the filaments are removed in substantially liquid form. The latter liquid is run into the spinning bath by means of the tube after spinning has been started up with a normal coagulating bath, forming an interfaoial surface 25 above the spinning nozzle.
  • a coagulating vessel is provided with partition extending across the full width thereof, but
  • a thread guide is arranged adapted to lead the filaments from one compartment of the bath to the other compartment.
  • a spinning nozzle adapted to spin downwards, the height of the spinning nozzle being conveniently 3 or 4 inches above the bottom of the partition.
  • the bath is filled to a point above the spinning nozzle with a 65-80% aqueous solution of sulphuric acid or a 60-70% solution of benzene 'sulphonic acid.
  • Spinning is then started up with a viscose solution in the customary manner, the filaments being carriedround the thread guide and out of the bath through the compartment not containing the spinning nozzle.
  • the thread is carried'roundfa feed roller adapted to exert the required tension and thence to a centrifugal spinning box or a bobbin or other winding or winding and twisting device.
  • a bobbin may, for instance, be rotated in running water. After spinning has begun benzene is run into the compartment of the coagulating bath containing the spinning 'nozzle until its level reaches a point 1 to '2 inches below the spinning nozzle, Spinning is thereafter continued. The speed of the feed'roller may be increased after the introduction of the benzene, so as to obtain filaments of "unusually 'fine denier. W 1
  • Example 2 A spinning vessel provided with a spinning nozzle adapted to spin upwardly is filled with. an aqueous solution containing 10% of sulphuric acid, 1% of ammonium sulphate, 15% of sodium sulphate and 10% of glucose. Spinning is started up with a viscose solution, preferably obtained from an unmatured alkali cellulose or V H yarns, threads, ribbonsfilms and like extruded from an alkali cellulose which has been matured for a comparatively short time, and the formed filaments are carried round a feed roller and thence into a bath consisting of a 60% aqueous solution of sulphoacetic acid, The yarn is carried out of the coagulating bath and wound on a bobbin rotating in running water or sprayed with water.
  • a viscose solution preferably obtained from an unmatured alkali cellulose or V H yarns, threads, ribbonsfilms and like extruded from an alkali cellulose which has been matured for
  • cellulosic solution as used hereinafter in the claims, is to be understood as meaning solutions of cellulose or of derivatives thereof which are relatively unstable and capable of ready regeneration, erg. viscose and the term does not include solutions of organic esters or ethers of cellulose, which are relatively stable.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
US552545A 1930-07-30 1931-07-22 Production of artificial products Expired - Lifetime US2004272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2004272X 1930-07-30

Publications (1)

Publication Number Publication Date
US2004272A true US2004272A (en) 1935-06-11

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Application Number Title Priority Date Filing Date
US552545A Expired - Lifetime US2004272A (en) 1930-07-30 1931-07-22 Production of artificial products

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US (1) US2004272A (fr)
FR (1) FR718152A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037240A (en) * 1958-11-24 1962-06-05 Stoy Artur Method and apparatus for manufactureing shaped articles from solutions of acrylonitrile polymers and copolymers
US4102959A (en) * 1975-07-31 1978-07-25 Idemitsu Kosan Company, Ltd. Process for preparing film by wet method
US4141942A (en) * 1975-06-04 1979-02-27 Idemitsu Kosan Co., Ltd. Process for preparing fibrous materials by wet method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037240A (en) * 1958-11-24 1962-06-05 Stoy Artur Method and apparatus for manufactureing shaped articles from solutions of acrylonitrile polymers and copolymers
US4141942A (en) * 1975-06-04 1979-02-27 Idemitsu Kosan Co., Ltd. Process for preparing fibrous materials by wet method
US4102959A (en) * 1975-07-31 1978-07-25 Idemitsu Kosan Company, Ltd. Process for preparing film by wet method

Also Published As

Publication number Publication date
FR718152A (fr) 1932-01-20

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