GB569419A - Improvements in or relating to tanning agents and methods of preparing same - Google Patents

Improvements in or relating to tanning agents and methods of preparing same

Info

Publication number
GB569419A
GB569419A GB9546/43A GB954643A GB569419A GB 569419 A GB569419 A GB 569419A GB 9546/43 A GB9546/43 A GB 9546/43A GB 954643 A GB954643 A GB 954643A GB 569419 A GB569419 A GB 569419A
Authority
GB
United Kingdom
Prior art keywords
tanning
tanning agents
liquor
parts
relating
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
GB9546/43A
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB569419A publication Critical patent/GB569419A/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
    • C14C3/08—Chemical tanning by organic agents
    • C14C3/18—Chemical tanning by organic agents using polycondensation products or precursors thereof

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

569,419. Tanning agents. AMERICAN CYANAMID CO. June 15, 1943, No. 9546. Convention date, July 25, 1942. [Class 76] A tanning liquor comprising a methylol melamine is obtained by dissolving in hot water at 60-100‹ C. a dry water-soluble mixture of 126 parts of melamnine and 65-180 parts of para-formaldehyde. To prevent formation of a salt-sensitive resin, the solution may be cooled or diluted, or both. The dry mixture may include a small amount of an alkaline buffering agent such as borax, sodium carbonate or bicarbonate, or trisodium phosphate to prevent premature reaction during storage or transit. An example illustrates formation of the liquor and its uses for tanning pickled calfskin.
GB9546/43A 1942-07-25 1943-06-15 Improvements in or relating to tanning agents and methods of preparing same Expired GB569419A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US569419XA 1942-07-25 1942-07-25

Publications (1)

Publication Number Publication Date
GB569419A true GB569419A (en) 1945-05-23

Family

ID=22007514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9546/43A Expired GB569419A (en) 1942-07-25 1943-06-15 Improvements in or relating to tanning agents and methods of preparing same

Country Status (1)

Country Link
GB (1) GB569419A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005234B (en) * 1954-07-07 1957-03-28 St Lawrence Corp Ltd Process for tanning skins and skins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005234B (en) * 1954-07-07 1957-03-28 St Lawrence Corp Ltd Process for tanning skins and skins

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