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US1643246A - Process for dyeing furs, skins, hairs, feathers, or the like - Google Patents

Process for dyeing furs, skins, hairs, feathers, or the like Download PDF

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Publication number
US1643246A
US1643246A US128332A US12833226A US1643246A US 1643246 A US1643246 A US 1643246A US 128332 A US128332 A US 128332A US 12833226 A US12833226 A US 12833226A US 1643246 A US1643246 A US 1643246A
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US
United States
Prior art keywords
feathers
hairs
skins
dyeing
furs
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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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US128332A
Inventor
Kaltwasser Oskar
Kirchhoff Hermann
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.)
IG Farbenindustrie AG
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IG Farbenindustrie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of US1643246A publication Critical patent/US1643246A/en
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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
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/02—Material containing basic nitrogen
    • D06P3/04—Material containing basic nitrogen containing amide groups
    • D06P3/30—Material containing basic nitrogen containing amide groups furs feathers, dead hair, furskins, pelts
    • D06P3/305—Material containing basic nitrogen containing amide groups furs feathers, dead hair, furskins, pelts with oxidation dyes

Definitions

  • OSKAR KALTWASSEB OF BERLIIT, HERMANN KIRCHHOFF, OF DESSAU, IN AN- HALT, GERMANY, ASSIGNORS TO- I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT, OF FRANKI'OBT-ON-THE-MAIN, GERMANY.
  • furs, skins, hairs, feathers, or the like are dyed with the aid of the diamino-2-hydroxyi1aphthalene obtainable by dinitrating naphthalene-L2- diazoxide, carefully treating the product with sodium sulphide and then reducing the nitrogroups, which product most probably is the 3.8-diamino-2-hydroxynaphthalene.
  • This compound is applied to the material to be dyed in aqueous solution in the presence of an oxidizing agent at a moderate temperature.
  • the well-washed skin is-handled at 30 C. for 2 hours in a bath containing per liter '2 g. of diamino-2hydroxynaphthalene hydrochlorate, 20 g. of hydrogen peroxide solution (of about 3 per cent strength) and per cent strength.
  • the skin is then rinsed, dried and finished as usual.
  • the dyeing on the unmordanted skin is brownish-gray.
  • the dyeing On a ferric mordant the dyeing is brownish-gray, on a chromic mordant it is dark-brown and on a cupric-mordant it is black-brown.
  • Process for dyeing furs,skins, hairs, and feathers which comprises treating the material to be dyed, in the presence of an oxidizing agent, with a solution of the diamino-2- hydroxynaphthalene obtained by dinitrating naphthalene 1.2-diazoxide, carefully treat-j ing the product with sodium sulphide and thenreducing the nitrogroups.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)

Description

2 g. of ammonia o Patented Sept- 20, 1927.
UNITED STATES PATENT OFFICE.
OSKAR KALTWASSEB, OF BERLIIT, HERMANN KIRCHHOFF, OF DESSAU, IN AN- HALT, GERMANY, ASSIGNORS TO- I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT, OF FRANKI'OBT-ON-THE-MAIN, GERMANY.
PROCESS FOBYDYETNG FURS, SKINS, HAIRS, FEATHERS, OR-THE LIKE.
Io Drawing. Application mecLAngust 9, 1926, Serial 'No. 128,332, and in Germany July 10, 1925.
B the present invention furs, skins, hairs, feathers, or the like are dyed with the aid of the diamino-2-hydroxyi1aphthalene obtainable by dinitrating naphthalene-L2- diazoxide, carefully treating the product with sodium sulphide and then reducing the nitrogroups, which product most probably is the 3.8-diamino-2-hydroxynaphthalene.
This compound is applied to the material to be dyed in aqueous solution in the presence of an oxidizing agent at a moderate temperature.
The following example illustrates the in- Vention without limiting it.
The well-washed skin is-handled at 30 C. for 2 hours in a bath containing per liter '2 g. of diamino-2hydroxynaphthalene hydrochlorate, 20 g. of hydrogen peroxide solution (of about 3 per cent strength) and per cent strength.
The skin is then rinsed, dried and finished as usual.
The dyeing on the unmordanted skin is brownish-gray. On a ferric mordant the dyeing is brownish-gray, on a chromic mordant it is dark-brown and on a cupric-mordant it is black-brown. I
That We claim is:
Process for dyeing furs,skins, hairs, and feathers, which comprises treating the material to be dyed, in the presence of an oxidizing agent, with a solution of the diamino-2- hydroxynaphthalene obtained by dinitrating naphthalene 1.2-diazoxide, carefully treat-j ing the product with sodium sulphide and thenreducing the nitrogroups.
In testimony whereof We afiix our signatures.
OSKAR KALTWASSER. .HERMANN KIRGHIHOFF.
US128332A 1925-07-10 1926-08-09 Process for dyeing furs, skins, hairs, feathers, or the like Expired - Lifetime US1643246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1643246X 1925-07-10

Publications (1)

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US1643246A true US1643246A (en) 1927-09-20

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US128332A Expired - Lifetime US1643246A (en) 1925-07-10 1926-08-09 Process for dyeing furs, skins, hairs, feathers, or the like

Country Status (1)

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US (1) US1643246A (en)

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