Patent · US Expired

Tanning method

US4398911A · kind A · utility

3Cited by

9References

5Claims

0Family size

Assignee

Rohm Co., Ltd. · JP

Inventors

Max May · Bottmingen, CH
Rolf Monsheimer · Darmstadt, DE
Ernst Pfleiderer · Weiterstadt, DE

Key dates

Filing date	Mar 3, 1982
Grant date	Aug 16, 1983
Priority date	—
Expiry date	Mar 3, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC14C1/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

What is disclosed are improved methods for the preparation of leather wherein, in one or more steps for preparing leather from animal skins or hides, including beamhouse operations such as soaking, dehairing, opening of the hide structure, deliming, bating, pickling, and degreasing to prepare dehaired tannable hides from animal skins or hides, and including subsequent tanning, retanning, and dying steps performed on said tannable hides, a thickening agent is added to at least one of the treating baths involved in such method steps.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.