GB397129A - Improvements in or relating to methods of making leather - Google Patents

Improvements in or relating to methods of making leather

Info

Publication number
GB397129A
GB397129A GB4043/32D GB404332D GB397129A GB 397129 A GB397129 A GB 397129A GB 4043/32 D GB4043/32 D GB 4043/32D GB 404332 D GB404332 D GB 404332D GB 397129 A GB397129 A GB 397129A
Authority
GB
United Kingdom
Prior art keywords
tanning
skins
dyeing
bath
bags
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
GB4043/32D
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.)
United Shoe Machinery Corp
Original Assignee
United Shoe Machinery Corp
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 United Shoe Machinery Corp filed Critical United Shoe Machinery Corp
Publication of GB397129A publication Critical patent/GB397129A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Abstract

397,129. Tanning and dyeing. UNITED SHOE MACHINERY CORPORATION, 140, Federal Street, Boston, U.S.A.- (Assignees of Merritt, M. M. ; Middleton, Massachusetts, U.S.A.) Feb. 11, 1932, No. 4043. Convention date, Oct. 24, 1931. [Class 76.] Tanning or simultaneous tanning and dyeing is effected by treating the skins &.c. in a bath in which the treating materials are gradually dissolved as treatment proceeds. This is effected by placing the skins &c. in the usual salt solution in a drum together with tanning material contained in waxed paper bags, enclosed in outer fabric bags, with or without dyeing material. similarly enclosed. The paper bags are ruptured when drumming is commenced and the material slowly dissolves. In chrome tanning the usual reducing agent, e.g. sodium thiosulphate, may be introduced after preliminary treatment with tanning and dyeing agents. After tanning the skins may be slicked out in the manner set forth in Specification 377,224. When acid aniline dyes are employed a first tanning bath contains sodium bichromate and an acid and also the dye in separate bags, and the skins are then treated in a second bath comprising chromium oxide, Cr2O3, dissolved in hydrochloric acid, sodium thiosulphate being added finally as reducing agent. Skins to be tanned and dyed in the manner described are advantageously submitted to a second fleshing operation before being placed in the bath. Specification 20403/89, [Class 76, Leather], also is referred to.
GB4043/32D 1931-10-24 1932-02-11 Improvements in or relating to methods of making leather Expired GB397129A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US397129XA 1931-10-24 1931-10-24

Publications (1)

Publication Number Publication Date
GB397129A true GB397129A (en) 1933-08-11

Family

ID=21906983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4043/32D Expired GB397129A (en) 1931-10-24 1932-02-11 Improvements in or relating to methods of making leather

Country Status (1)

Country Link
GB (1) GB397129A (en)

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