GB175250A - Improvements in the dyeing and finishing of leather - Google Patents

Improvements in the dyeing and finishing of leather

Info

Publication number
GB175250A
GB175250A GB33641/21A GB3364121A GB175250A GB 175250 A GB175250 A GB 175250A GB 33641/21 A GB33641/21 A GB 33641/21A GB 3364121 A GB3364121 A GB 3364121A GB 175250 A GB175250 A GB 175250A
Authority
GB
United Kingdom
Prior art keywords
leather
compounds
aromatic sulphonic
solution
dye
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
Application number
GB33641/21A
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of GB175250A publication Critical patent/GB175250A/en
Expired legal-status Critical Current

Links

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
    • D06P3/32—Material containing basic nitrogen containing amide groups leather skins

Landscapes

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

Abstract

The Specification as open to inspection under Sect. 91 (3) (a) describes the use of a solution of one or more aromatic sulphonic acids, one or more condensation products of an aromatic sulphonic acid with an aldehyde, or a mixture of these compounds, as a bleaching-agent for all kinds of leather. This subject-matter does not appear in the Specification as accepted.ALSO:Vegetable or mineral tanned leather is treated with a solution of one or more aromatic sulphonic acids, one or more condensation products of an aromatic sulphonic acid with an aldehyde, or with a mixture of these compounds, preparatory to dyeing with the ordinary dyes. When an acid dye is used, the compounds may be introduced into the dye bath, but when basic dyes are used, the leather is thoroughly washed after treatment in the bath and before introduction into the dye. As an example, chrome-tanned leather is immersed in a 5-10 per cent aqueous solution of the condensation product of phenol sulphonic acid and formaldehyde, the solution containing 1-5 lb. of the compound to 100 lb. of leather, until the desired penetration is obtained. The leather is then washed and dyed.
GB33641/21A 1921-02-09 1921-12-14 Improvements in the dyeing and finishing of leather Expired GB175250A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US175250XA 1921-02-09 1921-02-09

Publications (1)

Publication Number Publication Date
GB175250A true GB175250A (en) 1923-03-14

Family

ID=21783083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33641/21A Expired GB175250A (en) 1921-02-09 1921-12-14 Improvements in the dyeing and finishing of leather

Country Status (1)

Country Link
GB (1) GB175250A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601050A1 (en) * 1986-07-04 1988-01-08 Sandoz Sa SLICED DYEING PROCESS FOR TANNED LEATHER
US5352241A (en) * 1990-08-10 1994-10-04 Bayer Aktiengesellschaft Process for retanning mineral tanned leathers with aromatic sulphonic acids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601050A1 (en) * 1986-07-04 1988-01-08 Sandoz Sa SLICED DYEING PROCESS FOR TANNED LEATHER
US5352241A (en) * 1990-08-10 1994-10-04 Bayer Aktiengesellschaft Process for retanning mineral tanned leathers with aromatic sulphonic acids

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