28.
    发明专利
    未知

    公开(公告)号:DE3925255A1

    公开(公告)日:1991-01-31

    申请号:DE3925255

    申请日:1989-07-29

    Applicant: BASF AG

    Abstract: Polyethercarboxylic esters of the formula I where Alk is alkyl of 1 to 8 carbon atoms, R is hydrogen or methyl and n is from 3 to 70.

Patent Agency Ranking