公开(公告)号：US20200181832A1

公开(公告)日：2020-06-11

申请号：US16347116

申请日：2017-11-02

Applicant: BASF SE

Inventor： Si Jun ZHU ,  Laszlo SZARVAS ,  Yuan Zhuo LING ,  Qing SHI

IPC: D06M13/123 ,  C11D3/37 ,  C11D3/00 ,  C11D7/32 ,  D06M13/325 ,  D06M13/48

Abstract: A colorant catcher material includes a) a substrate and b) a colorant-catching additive. The colorant-catching additive is selected from the group consisting of polyvinylamines in form of homopolymers, copolymers and/or partial salts thereof, polyethylenimines in form of homopolymers, copolymers and/or partial salts thereof, and mixture thereof. The colorant-catching additive is fixed on the substrate by c) a fixing agent selected from the group consisting of dialdehydes with the carbon number of from 2 to 8. Also disclosed is a method for preparing the colorant catcher material and use of the same for catching colorants or removing dirt in an aqueous medium, particularly a laundry washing solution.

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

IPC: C14C1/08 ,  C14C3/06

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.