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1. (WO1991005877) A METHOD OF TREATING HIDES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/005877 International Application No.: PCT/SE1990/000652
Publication Date: 02.05.1991 International Filing Date: 11.10.1990
Chapter 2 Demand Filed: 05.02.1991
IPC:
C14C 1/08 (2006.01) ,C14C 3/04 (2006.01)
C CHEMISTRY; METALLURGY
14
SKINS; HIDES; PELTS; LEATHER
C
TREATING SKINS, HIDES OR LEATHER WITH CHEMICALS, ENZYMES OR MICRO-ORGANISMS, e.g. TANNING, IMPREGNATING OR FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
1
Treating skins or hides with chemicals, enzymes or micro-organisms prior to tanning
08
Deliming; Bating; Pickling; Degreasing
C CHEMISTRY; METALLURGY
14
SKINS; HIDES; PELTS; LEATHER
C
TREATING SKINS, HIDES OR LEATHER WITH CHEMICALS, ENZYMES OR MICRO-ORGANISMS, e.g. TANNING, IMPREGNATING OR FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
3
Tanning; Compositions for tanning
02
Chemical tanning
04
Mineral tanning
Applicants:
AGA AB [SE/SE]; S-181 81 Lidingö, SE (AllExceptUS)
TUOHIMAA, Timo [FI/FI]; FI (UsOnly)
UKKONEN, Aila [FI/FI]; FI (UsOnly)
Inventors:
TUOHIMAA, Timo; FI
UKKONEN, Aila; FI
Agent:
WIEDEMANN, Bernd; Aga Aktiebolag S-181 81 Lidingö, SE
Priority Data:
8903378-113.10.1989SE
Title (EN) A METHOD OF TREATING HIDES
(FR) PROCEDE DE TRAITEMENT DES PEAUX
Abstract:
(EN) There is described a method for treating delimed and bated hides, i.e. pelts. According to the inventive method, the pelts are brought to a suitable mineral tanning state and then tanned with mineral salts. The inventive treatment process corresponds to the conventional processes of pickling, tanning and basifying. The inventive method includes the treatment of pelts with weakly acid treatment liquids while supplying carbon dioxide and additions of tanning mineral substances subsequent to pretreatment, without or with the addition of solely a small amount of liquid, wherein the quantity of treatment liquid is supplemented after a predetermined treatment time.
(FR) On décrit un procédé de traitement des peaux foulées dont la chaux a été éliminée. Selon le procédé, les peaux sont amenées à un état de tannage minéral convenable puis tannées avec des sels minéraux. Le procédé de traitement correspond aux procédés traditionnels de mise en jusée, de tannage et de basification. Le procédé comprend le traitement des peaux avec des liquides de traitement faiblement acides tout en apportant, après le prétraitement, du dioxyde de carbone et des additions de substances minérales de tannage, avec ou sans l'addition d'une faible quantité de liquide, la quantité de liquide de traitement étant complétée après une durée de traitement prédéterminée.
Designated States: AU, BR, CA, FI, HU, JP, KR, NO, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
FI921607NO19921408EP0495873US5326377JPH05500978CA2065862
DE000069006509AU1990066008