GB148898A - Manufacture of tanning agents and the application thereof - Google Patents

Manufacture of tanning agents and the application thereof

Info

Publication number
GB148898A
GB148898A GB2072120A GB2072120A GB148898A GB 148898 A GB148898 A GB 148898A GB 2072120 A GB2072120 A GB 2072120A GB 2072120 A GB2072120 A GB 2072120A GB 148898 A GB148898 A GB 148898A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
heated
sulphonic acid
glucose
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
GB2072120A
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 WORMS AG
Original Assignee
CHEMISCHE FABRIKEN WORMS 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 CHEMISCHE FABRIKEN WORMS AG filed Critical CHEMISCHE FABRIKEN WORMS AG
Publication of GB148898A publication Critical patent/GB148898A/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

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Synthetic tanning-agents are obtained (1) by coupling by means of appropriate atoms or groups, aromatic hydroxy compounds or their metal salts with aliphatic hydroxy compounds; (2) by similarly coupling aromatic compounds free from hydroxy groups with aliphatic hydroxy compounds; (3) by repeated coupling of aromatic compounds by means of aldehydes, phosphorus pentoxide, &c. to obtain products of high molecular weight and introducing acid groups to solubilize them. According to examples:-phenol is sulphonated by sulphuric acid, glycerine is added, and the mixture condensed with formaldehyde; naphthol sulphonic acid and glucose are heated with formaldehyde; cresol sulphonic acid is heated with glucose and formaldehyde; cresol sulphonic acid is heated with glucose and sulphur chloride; sodium 1-naphthylamine-5-sulphonate is heated with glucose and formaldehyde; naphthalene sulphonic acid is heated with glucose and formaldehyde; coal-tar phenols of boiling-point 185-200 DEG C. are heated with sodium sulphite and formaldehyde, and the resulting tanning-agent is heated with glucose and formaldehyde; the same phenols are heated with sodium sulphite; formaldehyde, and sulphite-cellulose; p-dioxydiphenylmethane is sulphonated by sulphuric acid and the product heated with formaldehyde; p-dioxydiphenyl is condensed with cresol sulphonic acid and formaldehyde, and the neutralized product is heated with sodium sulphite; p-dioxysulphobenzide is sulphonated by sulphuric acid and the neutralized product is condensed with sodium phenol sulphonate and formaldehyde; p-dioxydiphenylmethane is sulphonated by sulphuric acid and the product heated with 1-naphthylamine-5-sulphonic acid and phosphorus pentoxide; naphthalene sulphonic acid is heated with sulphuric acid and formaldehyde, and the resulting tanning-agent is heated with cresol sulphonic acid formaldehyde. Specification 18258/13 is referred to. The products may be used alone or mixed with other tanning-agents, or in combined tanning processes wherein both vegetable and mineral tanning-agents are used. Tannin derivatives.-It is also stated that in the process described in Specification 148,897, glycerine, waste sulphite-cellulose lye, &c. may be coupled with vegetable tannins.
GB2072120A 1916-07-20 1920-07-10 Manufacture of tanning agents and the application thereof Expired GB148898A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE528803X 1916-07-20
DE148898X 1916-08-24

Publications (1)

Publication Number Publication Date
GB148898A true GB148898A (en) 1922-01-10

Family

ID=25752344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2072120A Expired GB148898A (en) 1916-07-20 1920-07-10 Manufacture of tanning agents and the application thereof

Country Status (1)

Country Link
GB (1) GB148898A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592587A (en) * 1949-08-09 1952-04-15 American Cyanamid Co Light stable phenolic syntans
EP0554216A1 (en) * 1992-01-28 1993-08-04 Ciba-Geigy Ag Process for pickling and pretanning of hides
EP0554218A1 (en) * 1992-01-28 1993-08-04 Ciba-Geigy Ag Process for pickling hides

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592587A (en) * 1949-08-09 1952-04-15 American Cyanamid Co Light stable phenolic syntans
EP0554216A1 (en) * 1992-01-28 1993-08-04 Ciba-Geigy Ag Process for pickling and pretanning of hides
EP0554218A1 (en) * 1992-01-28 1993-08-04 Ciba-Geigy Ag Process for pickling hides
US5360453A (en) * 1992-01-28 1994-11-01 Ciba-Geigy Corporation Process for pickling and pretanning raw hides
US5427594A (en) * 1992-01-28 1995-06-27 Ciba-Geigy Corporation Process for pickling raw hides

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