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GB156254A - Manufacture of new tanning materials and process of tanning therewith - Google Patents

Manufacture of new tanning materials and process of tanning therewith

Info

Publication number
GB156254A
GB156254A GB288/21A GB28821A GB156254A GB 156254 A GB156254 A GB 156254A GB 288/21 A GB288/21 A GB 288/21A GB 28821 A GB28821 A GB 28821A GB 156254 A GB156254 A GB 156254A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
product
neutralized
condensed
tanning
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
GB288/21A
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.)
Chemische Fabriken & Asphaltwe
Original Assignee
Chemische Fabriken & Asphaltwe
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
Priority claimed from DEC26427D external-priority patent/DE386470C/en
Application filed by Chemische Fabriken & Asphaltwe filed Critical Chemische Fabriken & Asphaltwe
Publication of GB156254A publication Critical patent/GB156254A/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
    • 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
    • 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
    • C14C3/20—Chemical tanning by organic agents using polycondensation products or precursors thereof sulfonated

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)
  • Phenolic Resins Or Amino Resins (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Synthetic tanning-agents obtained by coupling together organic compounds, such as heavy coal tar oil, tar phenols, phenol, creosote oil &c., by means of formaldehyde and sulphonation, are converted into aluminium or chromium salts, which also are tanning-agents, by treating the free acids or their salts, or mixtures thereof, with compounds containing aluminium or basic chromium or mixtures thereof. According to examples:-heavy coal-tar oil is sulphonated and condensed with formaldehyde, the free sulphuric acid is neutralized by potash, and the product is neutralized by aluminium hydroxide; tar phenols of boiling-point 185-200 DEG C. are heated with sodium sulphite and formaldehyde solution, the product is acidified by sulphuric acid and the sulphur dioxide boiled off, and the product finally neutralized by chromium hydroxide; a mixture of naphthalene and phenol is sulphonated and condensed with formaldehyde, the product is diluted, neutralized with lime till only feebly acid, filtered, and finally neutralized with basic chromic sulphate; creosote oil is sulphonated and condensed with formaldehyde, and the product mixed with chromium sulphate and caustic soda solution until only feebly acid; a mixture of naphthalene and phenol is sulphonated and condensed with formaldehyde, the product is further condensed with tannin and formaldehyde, and finally neutralized by potash and aluminium hydroxide; a mixture of 2 : 6-naphthol sulphonic acid and glucose is condensed with formaldehyde and the product neutralized by chromium hydroxide. The products may be used in tanning, alone or mixed with other tanning-agents, by any of the usual processes.ALSO:Synthetic tanning-agents obtained by coupling together organic compounds, such as heavy coal tar oil, tar phenols, phenols, creosote oil &c., by means of formaldehyde and sulphonation, are converted into aluminium or chromium salts, which also are tanning-agents, by treating the free acids or their salts, or mixtures thereof, with compounds of aluminium or basic chromium, or mixtures thereof. According to examples:-heavy coal-tar oil is sulphonated and condensed with formaldehyde, the free sulphuric acid is neutralized by potash, and the product is neutralized by aluminium hydroxide; tar phenols of boiling-point 185-200 DEG C. are heated with sodium sulphite and formaldehyde solution, the product is acidified by sulphuric acid and the sulphur dioxide boiled off, and the product finally neutralized by chromium hydroxide; a mixture of naphthalene and phenol is sulphonated and condensed with formaldehyde, the product is diluted, neutralized with lime till only feebly acid, filtered, and finally neutralized with basic chromic sulphate; creosote oil is sulphonated and condensed with formaldehyde, and the product mixed with chromium sulphate and caustic soda solution until only feebly acid; a mixture of naphthalene and phenol is sulphonated and condensed with formaldehyde, the product is further condensed with tannin and formaldehyde, and finally neutralized by potash and aluminium hydroxide; a mixture of 2 : 6-naphthol sulphonic acid and glucose is condensed with formaldehyde and the product neutralized by chromium hydroxide. The products may be used in tanning, alone or mixed with other tanning-agents, by any of the usual processes.
GB288/21A 1916-09-01 1921-01-04 Manufacture of new tanning materials and process of tanning therewith Expired GB156254A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE156254X 1916-09-01
DEC26327D DE382905C (en) 1916-09-01 1916-09-01 Process for the production of metal salts from synthetic tanning agents
DE156669X 1916-09-20
DEC26427D DE386470C (en) 1916-09-01 1916-10-25 Process for the production of metal salts from synthetic tanning agents
FR23747T 1920-11-03

Publications (1)

Publication Number Publication Date
GB156254A true GB156254A (en) 1922-06-06

Family

ID=60387776

Family Applications (3)

Application Number Title Priority Date Filing Date
GB288/21A Expired GB156254A (en) 1916-09-01 1921-01-04 Manufacture of new tanning materials and process of tanning therewith
GB665/21A Expired GB156669A (en) 1916-09-01 1921-01-06 Manufacture of tanning materials
GB813/21A Expired GB156749A (en) 1916-09-01 1921-01-07 Manufacture of tanning materials and process of tanning therewith

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB665/21A Expired GB156669A (en) 1916-09-01 1921-01-06 Manufacture of tanning materials
GB813/21A Expired GB156749A (en) 1916-09-01 1921-01-07 Manufacture of tanning materials and process of tanning therewith

Country Status (4)

Country Link
CH (1) CH93294A (en)
DE (1) DE382905C (en)
FR (2) FR516421A (en)
GB (3) GB156254A (en)

Also Published As

Publication number Publication date
CH93294A (en) 1922-02-16
GB156749A (en) 1922-04-07
DE382905C (en) 1923-10-01
FR23747E (en) 1921-12-15
FR516421A (en) 1921-04-19
GB156669A (en) 1922-01-26

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