1.
    发明专利
    未知

    公开(公告)号:AT527301T

    公开(公告)日:2011-10-15

    申请号:AT04713883

    申请日:2004-02-24

    Applicant: BASF SE

    Abstract: A method for the production of polyesterols with reduced reactivity (I) by polycondensation of dicarboxylic acids or their derivatives with H-functional substances in presence of tin catalysts, involves bringing (I) into contact with oxygen after the end of the esterification reaction. An independent claim is also included for polyesterols obtained by this method.

Patent Agency Ranking