ES2017146A6 - Procedure for manufacture of a synthetic tanning agent and use thereof in the tanning of leather. - Google Patents

Procedure for manufacture of a synthetic tanning agent and use thereof in the tanning of leather.

Info

Publication number
ES2017146A6
ES2017146A6 ES8903124A ES8903124A ES2017146A6 ES 2017146 A6 ES2017146 A6 ES 2017146A6 ES 8903124 A ES8903124 A ES 8903124A ES 8903124 A ES8903124 A ES 8903124A ES 2017146 A6 ES2017146 A6 ES 2017146A6
Authority
ES
Spain
Prior art keywords
tanning
procedure
manufacture
leather
synthetic
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 - Fee Related
Application number
ES8903124A
Other languages
Spanish (es)
Inventor
Istvan Deme
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.)
BOR ES CIPOPARI KUTATO FEJLESZ
Original Assignee
BOR ES CIPOPARI KUTATO FEJLESZ
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 BOR ES CIPOPARI KUTATO FEJLESZ filed Critical BOR ES CIPOPARI KUTATO FEJLESZ
Priority to ES8903124A priority Critical patent/ES2017146A6/en
Publication of ES2017146A6 publication Critical patent/ES2017146A6/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

Procedure for manufacture of a synthetic tanning agent and use thereof in the tanning of leather. The invention relates to a procedure for manufacture of a synthetic tanning agent, which comprises the reaction of a mixture of at least 30 mol% sulphonated phenol and/or cresols and at most 70 mol% phenol and/or cresols in a neutral or alkaline medium, with at least 60 mol% formaldehyde, calculated on the free ortho and para positions of the aromatic rings, between 60 degree C and the boiling point of the mixture for 1 to 8 hours. The procedure can be combined with the known methods of tanning and can be used to prepare leathers of a light colour.
ES8903124A 1989-09-14 1989-09-14 Procedure for manufacture of a synthetic tanning agent and use thereof in the tanning of leather. Expired - Fee Related ES2017146A6 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES8903124A ES2017146A6 (en) 1989-09-14 1989-09-14 Procedure for manufacture of a synthetic tanning agent and use thereof in the tanning of leather.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES8903124A ES2017146A6 (en) 1989-09-14 1989-09-14 Procedure for manufacture of a synthetic tanning agent and use thereof in the tanning of leather.

Publications (1)

Publication Number Publication Date
ES2017146A6 true ES2017146A6 (en) 1991-01-01

Family

ID=8263891

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8903124A Expired - Fee Related ES2017146A6 (en) 1989-09-14 1989-09-14 Procedure for manufacture of a synthetic tanning agent and use thereof in the tanning of leather.

Country Status (1)

Country Link
ES (1) ES2017146A6 (en)

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20001009