GB457185A - Manufacture of tanning agents - Google Patents

Manufacture of tanning agents

Info

Publication number
GB457185A
GB457185A GB519335A GB519335A GB457185A GB 457185 A GB457185 A GB 457185A GB 519335 A GB519335 A GB 519335A GB 519335 A GB519335 A GB 519335A GB 457185 A GB457185 A GB 457185A
Authority
GB
United Kingdom
Prior art keywords
sulphonated
hydroxydiphenyl
diphenyl
oleum
sulphonation
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
GB519335A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB519335A priority Critical patent/GB457185A/en
Publication of GB457185A publication Critical patent/GB457185A/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
    • 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)

Abstract

Products useful as tanning - agents are obtained by treating diphenyl or a derivative thereof with a sulphonating agent. The tanning action of the products may be increased by treating the diphenyl compound, before, during or after the sulphonation, with an agent having a condensing action or capable of enlarging the molecule, for instance with an aldehyde or ketone or a compound which reacts in the same way. In the examples: (1) p-hydroxydiphenyl is sulphonated with sulphuric acid monohydrate; (2) the sulphonation product of example 1 is diluted and heated with formaldehyde solution; (3) diphenyl is sulphonated with oleum, and the mass is warmed with formaldehyde solution; (4) 4 : 4<1>-dihydroxydiphenyl is sulphonated with sulphuric acid, and the mixture is warmed with methylolurea; (5) a , a -dinaphthyl is treated with chlorosulphonic acid and the product is condensed with benzaldehyde; (6) a mixture of p-hydroxydiphenyl and butyl alcohol is sulphonated with oleum; (7) diphenyl is sulphonated with oleum, and the mixture is treated in turn with benzyl chloride and glyoxal. Reference is made also to the sulphonation of o-hydroxydiphenyl and of a condensation product of p-hydroxydiphenyl with formaldehyde.
GB519335A 1935-02-18 1935-02-18 Manufacture of tanning agents Expired GB457185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB519335A GB457185A (en) 1935-02-18 1935-02-18 Manufacture of tanning agents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB519335A GB457185A (en) 1935-02-18 1935-02-18 Manufacture of tanning agents

Publications (1)

Publication Number Publication Date
GB457185A true GB457185A (en) 1935-08-19

Family

ID=9791456

Family Applications (1)

Application Number Title Priority Date Filing Date
GB519335A Expired GB457185A (en) 1935-02-18 1935-02-18 Manufacture of tanning agents

Country Status (1)

Country Link
GB (1) GB457185A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073606A1 (en) * 1981-08-19 1983-03-09 Diamond Shamrock Chemicals Company Condensation products of aromatic sulphonic acids with formaldehyde

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073606A1 (en) * 1981-08-19 1983-03-09 Diamond Shamrock Chemicals Company Condensation products of aromatic sulphonic acids with formaldehyde

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