3.
    发明专利
    未知

    公开(公告)号:DE2113096A1

    公开(公告)日:1972-09-21

    申请号:DE2113096

    申请日:1971-03-18

    Applicant: BASF AG

    Abstract: Water-soluble synthetic tanning agents composed of formaldehyde condensation products of non-sulfonated aromatic hydroxy compounds or the sulfomethylation products thereof with aromatic sulfonic acids or with the formaldehyde condensation products of said sulfonic acids.

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