US663739A - Process of making artificial-silk thread. - Google Patents

Process of making artificial-silk thread. Download PDF

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Publication number
US663739A
US663739A US1858500A US1900018585A US663739A US 663739 A US663739 A US 663739A US 1858500 A US1858500 A US 1858500A US 1900018585 A US1900018585 A US 1900018585A US 663739 A US663739 A US 663739A
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Prior art keywords
making artificial
silk thread
nitrocellulose
silk
thread
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US1858500A
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Jules Duquesnoy
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0014—Skin, i.e. galenical aspects of topical compositions

Definitions

  • the object of the present invention is to produce a new product by means of which a textile fabric may be artificially obtained which has the appearance and the properties of natural silk.
  • nitrocellulose is prepared by treating cotton or other cellulose material with a mixture of azotic, nitric, and sulfuric acids by the manufacturing process used for the production of pyroXylin, known under the name of nitro-cotton, obtained at a low temperature.
  • this nitrocellulose is then dissolved in a mixture of acetone, acetic acid, and amyl alcohol.
  • the proportions employed may vary; but those which I prefer are equal volumes of the three components. An intimate mixture of these three substances after having been suitably filtered has the appearance of limpid and colorless collodion.
  • This substance is expressed from a capillary orifice and instantly solidifies on contact with the external atmosphere, by reason of the evaporation of the acetone and forms a thread which can be drawn and wound Without necessitating the passing of it through coagulating or similar baths.
  • This filament which is comparable in its fineness, brilliancy, and transparency to that yielded by the cocoon of the silkworm, difiers from it by its excessive combustibility due to the presence of the nitrocellulose, and this has to be remedied to render it safe for the same uses as natural silk.
  • I claim- 1 The herein-described process of producing artificial silk, which consists in dissolving nitrocellulose or guncotton in a solvent composed of acetone, acetic acid, and an alcohol in about equal parts, and expressing the resulting solution from a capillary orifice.
  • the method of dissolving nitrocellulose which consists in subjecting the said nitrocellulose to the action of a solvent composed of acetone, acetic acid, and an alcohol.
  • the method of treating guncotton which consists in subjecting the said guncotton to the action of asolvent composed of equal parts of acetone, acetic acid, and amyl alcohol.

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  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Peptides Or Proteins (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Materials For Medical Uses (AREA)

Description

FFlCE.
PATENT JULES DUQUESNOY, or PARIS, FRANCE.
PROCESS OF MAKING ARTIFICIAL-SILK THREAD.
SPECIFICATION forming part of Letters Patent No. 663,739 dated December 11, 1900.
Application filed May 31, 1900. Serial No. 18,585. (No specimens.)
To all whom, it may concern:
Be it known that I, J ULES DUouEsNoY, engineer, of 14 Avenue Klber, in the city of 7 Paris, Republic of France, have invented a new or Improved Process of Making Artificial- -Silk Thread, of which the followingis a full,
clear, and exact description.
The object of the present invention is to produce a new product by means of which a textile fabric may be artificially obtained which has the appearance and the properties of natural silk.
The mode of preparation of the material intended to be converted into thread by any convenien t mechanical means is substantially as follows: First, nitrocellulose is prepared by treating cotton or other cellulose material with a mixture of azotic, nitric, and sulfuric acids by the manufacturing process used for the production of pyroXylin, known under the name of nitro-cotton, obtained at a low temperature. Second, this nitrocellulose is then dissolved in a mixture of acetone, acetic acid, and amyl alcohol. The proportions employed may vary; but those which I prefer are equal volumes of the three components. An intimate mixture of these three substances after having been suitably filtered has the appearance of limpid and colorless collodion. This substance is expressed from a capillary orifice and instantly solidifies on contact with the external atmosphere, by reason of the evaporation of the acetone and forms a thread which can be drawn and wound Without necessitating the passing of it through coagulating or similar baths. This filament, which is comparable in its fineness, brilliancy, and transparency to that yielded by the cocoon of the silkworm, difiers from it by its excessive combustibility due to the presence of the nitrocellulose, and this has to be remedied to render it safe for the same uses as natural silk. To this end I employ certain reducing agents-such as hydrosulfurous acid, ammonium sulhydrate, &c.in order to act upon the nitrocellulose, which is thereby reduced to totally or partially denitrated cellulose, according to the length of the reaction. The material thus obtained, which I have just described, maybe used as a pellicle.
I claim- 1. The herein-described process of producing artificial silk, which consists in dissolving nitrocellulose or guncotton in a solvent composed of acetone, acetic acid, and an alcohol in about equal parts, and expressing the resulting solution from a capillary orifice.
2. In the herein-described process of making artificial silk, the method of dissolving nitrocellulose which consists in subjecting the said nitrocellulose to the action of a solvent composed of acetone, acetic acid, and an alcohol.
3. In the herein-described process of making artificial silk, the method of treating guncotton, which consists in subjecting the said guncotton to the action of asolvent composed of equal parts of acetone, acetic acid, and amyl alcohol.
The foregoing specification of my new or improved product or artificial silk suitable for the production of thread signed by me this 18th day of May, 1900.
J ULES DUQUESNOY.
Witnesses:
EDWARD P. MAOLEAN, MAURICE H. PIGNETZ.
US1858500A 1900-05-31 1900-05-31 Process of making artificial-silk thread. Expired - Lifetime US663739A (en)

Priority Applications (1)

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US1858500A US663739A (en) 1900-05-31 1900-05-31 Process of making artificial-silk thread.

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US1858500A US663739A (en) 1900-05-31 1900-05-31 Process of making artificial-silk thread.

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US663739A true US663739A (en) 1900-12-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446541A (en) * 1942-11-13 1948-08-10 Tennessee Products Corp Extraction of nitrocellulose from nitrating solution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446541A (en) * 1942-11-13 1948-08-10 Tennessee Products Corp Extraction of nitrocellulose from nitrating solution

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