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公开(公告)号:US20190309378A1
公开(公告)日:2019-10-10
申请号:US16308854
申请日:2017-06-12
Applicant: BASF SE
Inventor: Qing SHI , Laszlo SZARVAS , Biyu PENG , Chunxiao ZHANG
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.