US1489814A - Dyeing of cellulose acetate, artificial silk, films, and the like - Google Patents

Dyeing of cellulose acetate, artificial silk, films, and the like Download PDF

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Publication number
US1489814A
US1489814A US556423A US55642322A US1489814A US 1489814 A US1489814 A US 1489814A US 556423 A US556423 A US 556423A US 55642322 A US55642322 A US 55642322A US 1489814 A US1489814 A US 1489814A
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United States
Prior art keywords
cellulose acetate
films
dyeing
artificial silk
silk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US556423A
Inventor
Bouvier Maurice Ernest
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LA POUR LA FABRICATION de la SOIE "RHODIASETA" Ste
RHODIASETA
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RHODIASETA
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Publication date
Application filed by RHODIASETA filed Critical RHODIASETA
Priority to US556423A priority Critical patent/US1489814A/en
Application granted granted Critical
Publication of US1489814A publication Critical patent/US1489814A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/22—Effecting variation of dye affinity on textile material by chemical means that react with the fibre
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
    • Y10S8/92—Synthetic fiber dyeing
    • Y10S8/921—Cellulose ester or ether

Definitions

  • This invention relates to the dyeing of 10 cellulose acetate films, threads or the like, and is an improvement in or a modification of the invention described in Letters Patent of the United States, No. 1,366,023, granted to Edmond Prince under date of January
  • a process is described by which cellulose acetate films, threads or the like are rendered capable of being dyed by being treated with solutions of salts of alkali metals to which alkali has been added.
  • a hank of 100 grammes of cellulose acetate silk is plunged into a bath of 2 litres
  • the hank is smoothed in the bath, gradually heated to 85 C. until paper impregnated with phenolphtalein is no longer colored by contact with it, this being obtained after a treatment of from 30 to minutes.
  • the silk is then withdrawn from the bath and dyed.
  • a process for treating cellulose acetate films, silk and the like previous to dyeing consisting in treating the cellulose acetate with a relatively concentrated solution of neutral salts of alkali metals to which a salt with an alkaline reaction, adapted to act as an alkali in the saponification of the acetate is added in quantity less than is required to make a 1 per cent solution.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Coloring (AREA)

Description

Patented Apr. 8, 1924.
UNITED STATES PATENT OFFICE.
MAURICE ERNEST BOUVIER, OF LYON, FRANCE, ASSIGNOR, BY MESNE ASSIGNMENTS, TO LA SOCmTE POUR LA FABRICATION DE LA SOIE RHODIASETA, OF PARIS,
FRANCE, A CORPORATION OF FRANCE.
DYELNG OF GELLULOSE ACETATE, ARTIFICIAL SILK, FILMS, AND THE LIKE.
No Drawing.
To all whom it may concern:
Be it known. that I, MAURICE ERNEST BOUV'LER, residing at Lyon, France, a citizen of the Confederation of Switzerland, have 6 invented certain new and useful Improvements in or Relating to Dyeing of Cellulose Acetate, Artificial Silk, Films, and the like, of which the following is a specification.
This invention relates to the dyeing of 10 cellulose acetate films, threads or the like, and is an improvement in or a modification of the invention described in Letters Patent of the United States, No. 1,366,023, granted to Edmond Prince under date of January In this patent, a process is described by which cellulose acetate films, threads or the like are rendered capable of being dyed by being treated with solutions of salts of alkali metals to which alkali has been added.
In the said patent, only one example has been given, in which a solution of sodium chloride is used, to which caustic soda has been added. We have found that the caustic alkali can be replaced by a salt with an alkaline reaction (carbonate, borate, silicate, tribasic phosphate, etc.) adapted to act as an alkali in the saponification of the acetate, the quantity of said salt being less than is required to make a one per cent solution.
Example.
A hank of 100 grammes of cellulose acetate silk is plunged into a bath of 2 litres,
Application filed April 25, 1922. Serial No. 556,423.
containing 800 gr. of crystallized sodium sulphate (350 gr. SO,Na and 17 gr. of sodium carbonate.
The hank is smoothed in the bath, gradually heated to 85 C. until paper impregnated with phenolphtalein is no longer colored by contact with it, this being obtained after a treatment of from 30 to minutes.
The silk is then withdrawn from the bath and dyed.
lVhat I claim and desire to secure by Letters Patent is 1. A process for treating cellulose acetate films, silk and the like previous to dyeing, consisting in treating the cellulose acetate with a relatively concentrated solution of neutral salts of alkali metals to which a salt with an alkaline reaction, adapted to act as an alkali in the saponification of the acetate is added in quantity less than is required to make a 1 per cent solution.
2. The process of preparing cellulose acetate for dyeing, which consists in immersing the same in a bath containing sodium sulphate and sodium carbonate in the proportions of fifty to one, and heating the bath to a temperature of approximately 85 C. for thirty to forty-five minutes.
In testimony whereof I have signed my name to this specification.
MAURICE ERNEST BQUVIER.
Witness JULIAN KEMBLE SNEDLEY.
US556423A 1922-04-25 1922-04-25 Dyeing of cellulose acetate, artificial silk, films, and the like Expired - Lifetime US1489814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US556423A US1489814A (en) 1922-04-25 1922-04-25 Dyeing of cellulose acetate, artificial silk, films, and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US556423A US1489814A (en) 1922-04-25 1922-04-25 Dyeing of cellulose acetate, artificial silk, films, and the like

Publications (1)

Publication Number Publication Date
US1489814A true US1489814A (en) 1924-04-08

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Family Applications (1)

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US556423A Expired - Lifetime US1489814A (en) 1922-04-25 1922-04-25 Dyeing of cellulose acetate, artificial silk, films, and the like

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