2.
    发明专利
    未知

    公开(公告)号:DE876843C

    公开(公告)日:1953-05-18

    申请号:DEB0006998

    申请日:1941-10-10

    Applicant: BASF AG

    Inventor: KROEPER HUGO DR

    7.
    发明专利
    未知

    公开(公告)号:AT257562B

    公开(公告)日:1967-10-10

    申请号:AT746065

    申请日:1965-08-12

    Applicant: BASF AG

    Abstract: Tertiary alkyl acrylates or methacrylates of the formula wherein R1 denotes an H atom or the -CH3 group and the R2 radicals which may be the same or different denote an alkyl group having from 1 to 4 C atoms, are prepared by reacting acrylic or methacrylic acid with a tertiary olefin of formula where R2 has the above meaning and R3 denotes an alkylidene group with 1 to 4 C atoms, in the presence of an active bleaching earth containing from 0.005 to 0.1 milliequivalents per gram of free titratable acid at atmospheric or superatmospheric pressure and at a temperature of from 0 DEG C. to 40 DEG C. A suitable bleaching earth comprises 50 to 70% of SiO2, 10 to 30% of Al2O3, 2 to 8% of Fe2O3, 1 to 9% of MgO and small amounts of the oxides of the other alkaline earth metals (all percentages are by weight). Examples describe the production of tertiary-butyl acrylate.

    9.
    发明专利
    未知

    公开(公告)号:DE895767C

    公开(公告)日:1953-11-05

    申请号:DEB0016593

    申请日:1951-09-04

    Applicant: BASF AG

    Inventor: KROEPER HUGO DR

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