3.
    发明专利
    未知

    公开(公告)号:DE4115025A1

    公开(公告)日:1992-11-12

    申请号:DE4115025

    申请日:1991-05-08

    Applicant: HOECHST AG

    Abstract: The invention relates to a process for the removal of olefinic impurities from 1,1,1,2,3,3,3-heptafluoropropane (R 227), by bringing the contaminated R 227 in contact with an alcohol and a base and distilling off the R 227 simultaneously or subsequently.

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