GB156669A - Manufacture of tanning materials - Google Patents

Manufacture of tanning materials

Info

Publication number
GB156669A
GB156669A GB665/21A GB66521A GB156669A GB 156669 A GB156669 A GB 156669A GB 665/21 A GB665/21 A GB 665/21A GB 66521 A GB66521 A GB 66521A GB 156669 A GB156669 A GB 156669A
Authority
GB
United Kingdom
Prior art keywords
tanning
agents
formaldehyde solution
product
metal salts
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
GB665/21A
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 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
Priority claimed from DEC26427D external-priority patent/DE386470C/en
Application filed by CHEMISCHE FABRIKEN WORMS AG filed Critical CHEMISCHE FABRIKEN WORMS AG
Publication of GB156669A publication Critical patent/GB156669A/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

Abstract

Synthetic tanning-agents of the kinds described in Specification 156,254 are converted into heavy metal salts other than those of aluminium or chromium; these heavy metal salts also are tanning-agents. According to examples:-tar phenols of boiling point 185-200 DEG C. are heated with sodium sulphite and formaldehyde solution, the product acidified with sulphuric acid and the sulphur dioxide boiled off, and the product finally neutralized with ceric hydroxide; a mixture of naphthalene and phenol is sulphonated and condensed with formaldehyde solution, and the product is further condensed with tannin and formaldehyde solution, and finally neutralized with potash and ceric hydroxide. The products may be used in tanning alone or mixed with other tanning-agents.ALSO:Synthetic tanning-agents of the kinds described in Specification 156,254 are converted into heavy metal salts other than those of aluminium or chromium; these heavy metal salts also are tanning-agents. According to examples:- tar phenols of boiling-point 85-200 DEG C. are heated with sodium sulphite and formaldehyde solution, the product acidified with sulphuric acid and the sulphur dioxide boiled off, and the product finally neutralized with ceric hydroxide; a mixture of napthalene and phenol is sulphonated and condensed with formaldehyde solution, and the product is further condensed with tannin and formaldehyde solution, and finally neutralized with potash and ceric hydroxide. The products may be used for tanning alone or mixed with other tanning-agents.
GB665/21A 1916-09-01 1921-01-06 Manufacture of tanning materials Expired GB156669A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DEC26327D DE382905C (en) 1916-09-01 1916-09-01 Process for the production of metal salts from synthetic tanning agents
DE156254X 1916-09-01
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
GB156669A true GB156669A (en) 1922-01-26

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 Before (1)

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

Family Applications After (1)

Application Number Title Priority Date Filing Date
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
FR23747E (en) 1921-12-15
CH93294A (en) 1922-02-16
DE382905C (en) 1923-10-01
GB156254A (en) 1922-06-06
GB156749A (en) 1922-04-07
FR516421A (en) 1921-04-19

Similar Documents

Publication Publication Date Title
GB449243A (en) Process of improving the crease-resisting properties of textile materials
US2099717A (en) Process for the production of water-soluble condensation products
EP0717114A2 (en) Aqueous composition for pretanning hides or retanning of leather
GB156669A (en) Manufacture of tanning materials
GB515517A (en) Manufacture of mixed resins for cation exchange
GB156670A (en) Process for tanning hides
GB148898A (en) Manufacture of tanning agents and the application thereof
GB148897A (en) Manufacture of tanning agents
GB444591A (en) The manufacture of tanning materials
GB447417A (en) Improvements in or relating to the manufacture of water-soluble condensation products derived from phenolic resins
GB649945A (en) Manufacture of oxy-compounds of the naphthalene series
US1890866A (en) Making anthraquinone-sulphonic acids
GB384619A (en) Manufacture of aromatic oxy-carboxylic acids
GB383381A (en) Improved process for the manufacture of synthetic tanning substances and method of tanning skins therewith
GB157856A (en) Manufacture of tanning stuffs and process of tanning therewith
GB458028A (en) Improvements in the manufacture and production of water-soluble condensation products having tanning action
GB494871A (en) Improvements in the manufacture and production of substances having tanning action
GB205167A (en) Improvements in and relating to the production of phenol formaldehyde condensation products
GB666554A (en) Preparation of phenols by the sulphonation process
GB511897A (en) Improvements in and relating to the manufacture and production of synthetic tanning materials
GB703235A (en) Improvements in or relating to the gluing of wood and similar materials without using high temperatures
GB154162A (en) Manufacture of tanning materials
GB147608A (en) An improved process for the manufacture of non-explosive preparations, more especially adapted for use in preserving wood
GB159494A (en) A process for the manufacture of resinous phenol formaldehyde condensation products
GB154153A (en) Manufacture of tanning materials