GB465048A - Improvements in the treatment of chrome tanned leather - Google Patents

Improvements in the treatment of chrome tanned leather

Info

Publication number
GB465048A
GB465048A GB29638/35A GB2963835A GB465048A GB 465048 A GB465048 A GB 465048A GB 29638/35 A GB29638/35 A GB 29638/35A GB 2963835 A GB2963835 A GB 2963835A GB 465048 A GB465048 A GB 465048A
Authority
GB
United Kingdom
Prior art keywords
ethylene oxide
solution
polyethylene glycol
prepared
polyglycerol
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
GB29638/35A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB29638/35A priority Critical patent/GB465048A/en
Priority to FR812551D priority patent/FR812551A/en
Publication of GB465048A publication Critical patent/GB465048A/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
    • C14C3/02—Chemical tanning
    • C14C3/04—Mineral tanning
    • C14C3/06—Mineral tanning using chromium compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

Chrome tanned leather, previously to drying and for the purpose of rendering it easily susceptible to "wetting back," is treated with a substantially neutral polyhydroxy compound containing at least one ether group or a polyether compound which may or may not contain free hydroxyl groups. Suitable substances are condensation products of carbohydrates with ethylene oxide, p polyethylene oxide itself (cf. Specification 346,550), polyglycerols, condensation products of substances containing hydroxy or amino groups with ethylene oxide, polyethenoxyurea (cf. Specifications 420,137 and 432,356) and fatty derivatives of such bodies, e.g. polyethenoxy dimethylolurea stearate; polyglycerol stearate prepared by heating oleic acid with an excess of glycerol and an alkaline catalyst; stearylmethylglucamine polyethylene glycol ether (cf. Specification 420,518), methylglucoside polyethylene glycol ether prepared by inter-action of a -methyl glucoside with ethylene oxide in presence of a trace of caustic soda; condensation product of monohydric alcohols such as cetylalcohols &c. with ethylene oxide (cf. Specification 380,431) or condensation products of cod oil with ethylene oxide (cf. Specification 434,424). According to examples leather is treated with: 1. A solution of cane sugar ethylene oxide condensation product prepared by condensing sugar with ethylene oxide in the presence of caustic soda under pressure; 2. A solution of polyethylene glycol prepared by condensing ethylene glycol with ethylene oxide in presence of caustic soda under pressure; 3. A solution of polyglycerol, or polyglycerol esters prepared by esterifying polyglycerol with the acid or acid anhydride, or in the case of higher fatty acid directly from glycerol and the acid as described in German Specification 575,911; 4. A solution of polyethenoxyurea or polyethenoxydimethylol urea or its stearate; 5. A solution of stearmethylglucamine polyethylene glycol ether or methyl glucoside polyethylene glycol ether; 6. A solution of cod oil ethylene oxide condensation product; 7. A solution of a substance known under the trade name of Emulphor O, presumed to have the constitution C12H25(OC2H4)n.OH.
GB29638/35A 1935-10-26 1935-10-26 Improvements in the treatment of chrome tanned leather Expired GB465048A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB29638/35A GB465048A (en) 1935-10-26 1935-10-26 Improvements in the treatment of chrome tanned leather
FR812551D FR812551A (en) 1935-10-26 1936-10-26 Chrome-tanned leather processing refinements

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB812551X 1935-10-26
GB29638/35A GB465048A (en) 1935-10-26 1935-10-26 Improvements in the treatment of chrome tanned leather

Publications (1)

Publication Number Publication Date
GB465048A true GB465048A (en) 1937-04-26

Family

ID=60293614

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29638/35A Expired GB465048A (en) 1935-10-26 1935-10-26 Improvements in the treatment of chrome tanned leather

Country Status (2)

Country Link
FR (1) FR812551A (en)
GB (1) GB465048A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005038058A1 (en) * 2003-10-09 2005-04-28 Tfl Ledertechnik Gmbh Composition for the pretanning of pelts

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975096C (en) * 1953-11-09 1961-08-10 Boehme Fettchemie G M B H Leather fatliquor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005038058A1 (en) * 2003-10-09 2005-04-28 Tfl Ledertechnik Gmbh Composition for the pretanning of pelts
CN100552043C (en) * 2003-10-09 2009-10-21 Tfl皮革技术有限责任公司 The composition that is used for the pretanning of pelts

Also Published As

Publication number Publication date
FR812551A (en) 1937-05-12

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