Global Patent Index - EP 2028279 A2

EP 2028279 A2 2009-02-25 - Method for treating animal skins/hides with aluminium compounds.

Title (en)

Method for treating animal skins/hides with aluminium compounds.

Title (de)

Methode zur Behandlung von Tierhäuten mit Aluminiumverbindungen.

Title (fr)

Procédé de traitement de peaux d'animaux avec des composés d'aluminium

Publication

EP 2028279 A2 (DE)

Application

EP 08012563 A

Priority

DE 102007036089 A

Abstract (en)

Treating a skin material, comprises treating the skin material with a phenol group containing tanning agent for enabling a reaction between the hydroxyl group with the aluminum-ions to the aluminum-ion complex formation and hydrogen bridging on the different side chains of the polypeptide chain of the skin, and binding aluminum ions primarily on the carboxyl group of the polypeptide chain of the skin, with the result of an irreversible tanning, similarly the chrome-tanning, where the aluminum treatment is carried out at least partially after the fat treatment.

Abstract (de)

Die Erfindung betrifft eine Methode zur Behandlung von Tierhäuten, bestehend aus: - der Behandlung der Tierhäute mit einem Phenolgruppen enthaltenden Gerbstoff zur Ermöglichung einer Reaktion zwischen dem Hydroxylgruppen (OH-) mit den Alu-lonen einerseits zur Alu-lonen Komplexbildung und Wasserstoffbruckenbildung (nebenvalensig) an die verschiedenen Seitenketten der Polypeptidketten der Haut. Der Bindung Alu-lonen hauptvalentig an die Carboxylgruppen der Polypeptidketten der Haut, mit dem Ergebnis einer irreversible Gerbung, ähnlich der Chromgerbung. dadurch gekennzeichnet, dass die Aluminiumbehandlung wenigstens teilweise nach der Fettbehandlung durchgeführt wird.

IPC 8 full level (invention and additional information)

C14C 3/04 (2006.01); C14C 3/10 (2006.01); C14C 3/28 (2006.01); C14C 9/02 (2006.01)

CPC (invention and additional information)

C14C 3/04 (2013.01); C14C 3/10 (2013.01); C14C 3/28 (2013.01); C14C 9/02 (2013.01)

Citation (applicant)

  • GB 2057497 A 19810401 - AFRICAN TERRITORIES WATTLE IND
  • VON NEVILLE P. SLABBERT: "Mimosa-Al tannages - An alternative to chrome tanning", JALCA, vol. 76, 1981, pages 231

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

EPO simple patent family

EP 2028279 A2 20090225; EP 2028279 A3 20100203; DE 102007036089 A1 20090205

INPADOC legal status


2010-08-04 [18W] APPLICATION WITHDRAWN

- Effective date: 20100626

2010-02-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

2010-02-03 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA MK RS

2010-02-03 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: C14C 3/04 20060101AFI20081107BHEP

2010-02-03 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: C14C 3/28 20060101ALI20091230BHEP

2010-02-03 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: C14C 3/10 20060101ALI20091230BHEP

2010-02-03 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: C14C 9/02 20060101ALI20091230BHEP

2009-02-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

2009-02-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA MK RS