GB444184A - Improvements in dyeing leather - Google Patents

Improvements in dyeing leather

Info

Publication number
GB444184A
GB444184A GB2629834A GB2629834A GB444184A GB 444184 A GB444184 A GB 444184A GB 2629834 A GB2629834 A GB 2629834A GB 2629834 A GB2629834 A GB 2629834A GB 444184 A GB444184 A GB 444184A
Authority
GB
United Kingdom
Prior art keywords
acid
minutes
dyeings
sulphate
drumming
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
GB2629834A
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
Original Assignee
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
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB2629834A priority Critical patent/GB444184A/en
Publication of GB444184A publication Critical patent/GB444184A/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/02Material containing basic nitrogen
    • D06P3/04Material containing basic nitrogen containing amide groups
    • D06P3/32Material containing basic nitrogen containing amide groups leather skins

Landscapes

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

Abstract

Acid wool and substantive dyes, dyeing with; dye preparations.--Level dyeings on leather with acid or substantive dyes are obtained by applying the dyestuffs in conjunction with substances of neutral or acid reaction exerting a buffer action at pH values of 7 to 3.2. The dyeings so produced have an increased resistance to soap and alkalies. Specified buffer substances are salts of weak bases, e.g. ammonium chloride, sulphate, formate or oxalate, magnesium sulphate or acetate, aluminium sulphate or acetate and salts of suitable polybasic acids, e.g. alkali metal phosphates, potassium acid phthalate, sodium or ammonium acid diglycollate, potassium acid adipinate and sodium or potassium acid saccharate. The following examples are specified: (1) Full saturated level dyeings are obtained upon East Indian wet sheepskins by drumming them for 45 minutes in an aqueous liquor at 40 DEG C. containing a mixture obtained by grinding together Metanil yellow extra and sodium acid diglycollate and specially level dyeings are obtained upon chrome-tanned leather by treatment for 30 minutes in a similar liquor at 60 DEG C. followed by greasing and continuation of the treatment for a further 20 minutes. (2) Chrome-tanned leather is dyed as in (1) with the use of a mixture obtained by grinding together Direct deep black E extra and ammonium sulphate; the dyeings are fast to the subsequent fat liquoring. (3) Well-covered level dyeings are obtained upon neutralized chrome calfskins by drumming them for 30 minutes in an aqueous liquor at 60 DEG C. containing Direct deep black E extra and potassium acid saccharate, thereafter adding formic acid and drumming for a further 30 minutes.
GB2629834A 1934-09-13 1934-09-13 Improvements in dyeing leather Expired GB444184A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2629834A GB444184A (en) 1934-09-13 1934-09-13 Improvements in dyeing leather

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2629834A GB444184A (en) 1934-09-13 1934-09-13 Improvements in dyeing leather

Publications (1)

Publication Number Publication Date
GB444184A true GB444184A (en) 1936-03-13

Family

ID=10241429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2629834A Expired GB444184A (en) 1934-09-13 1934-09-13 Improvements in dyeing leather

Country Status (1)

Country Link
GB (1) GB444184A (en)

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