Patent · US Active

Process for producing leather

US11242574B2 · kind B2 · utility

0Cited by

0References

9Claims

0Family size

Assignee

BASF SE

Inventors

Qing Shi · Tangxia, CN
Laszlo Szarvas · Ludwigshafen, DE
Biyu Peng · Chengdu, CN
Chunxiao Zhang · Beijing, CN

Key dates

Filing date	Jun 12, 2017
Grant date	Feb 8, 2022
Priority date	—
Expiry date	Jun 12, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC14C3/06
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a process for producing leather in which methanesulfonic acid (MSA) is used in the pickling step at a high pH value, and the use of MSA is to improve the quality of the final leather product as well as to improve the environmental impact of the waste liquor.

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