Global Patent Index - EP 0235307 A1

EP 0235307 A1 1987-09-09 - Method for waterproofing treatment of leather.

Title (en)

Method for waterproofing treatment of leather.

Title (de)

Verfahren zur wasserdichtmachenden Behandlung von Leder.

Title (fr)

Procédé d'imperméabilisation du cuir.

Publication

EP 0235307 A1 (EN)

Application

EP 86100048 A

Priority

EP 86100048 A

Abstract (en)

The present invention provides, in a process for chrome tanning hide, a method for imparting hide with waterproofness, which is a method for waterproofing treatment of leather which is characterized by that in a greasing step falling in the last step of the chrome tanning process, hide after dyeing treatment is subjected to drumming with a treating solution containing two greasing agents having a hydrophobic effect and one waterproofing agent for a required time thereby imparting said hide with oily feel and waterproofness, and thereafter is subjected to re-chrome tanning and subsequently to water-repellent treatment.

IPC 1-7 (main, further and additional classification)

C14C 9/00; C14C 9/02

IPC 8 full level (invention and additional information)

C14C 9/00 (2006.01); C14C 9/02 (2006.01)

CPC (invention and additional information)

C14C 9/00 (2013.01); C14C 9/02 (2013.01)

Citation (search report)

  • [A] DE 1800244 B1 19700402 - ROEHM & HAAS GMBH CHEM FAB
  • [A] DE 2119083 A1 19711125
  • [A] EP 0107948 A1 19840509 - MINNESOTA MINING & MFG
  • [A] GB 1123829 A 19680814 - MINNESOTA MINING & MFG
  • [A] SOVIET INVETIONS ILLUSTRATED, week C40, 12th November 1980, abstract no. 70862, D18, Section Chemical, Derwent Publications Ltd.; SU - A - 715 625 (MOSC. LIGHT IND. TECH.) 16-06-1978
  • [A] SOVIET INVENTIONS ILLUSTRATED, week C16, 28th May 1980, abstract no. 28645, D18E17, Section Chemical, Derwent Publications Ltd.; & SU - A - 679 626 (VOLGA DON. CHEM. WKS.)09-03-1977

Designated contracting state (EPC)

DE GB IT

DOCDB simple family

EP 0235307 A1 19870909