3.
    发明专利
    未知

    公开(公告)号:DE59106173D1

    公开(公告)日:1995-09-14

    申请号:DE59106173

    申请日:1991-02-09

    Applicant: BASF AG

    Abstract: Process for the preparation of THF or of THF and gamma -butyrolactone from the hydrogenation product of the hydrogenation of maleic acid, succinic acid, maleic anhydride, succinic anhydride and/or fumaric acid by treating the crude hydrogenation product without prior workup at 100 to 300 DEG C with proton acids and isolating pure tetrahydrofuran and gamma -butyrolactone from the reaction mixture obtained by distillation.

    PROCESS FOR THE CONTINUOUS PRODUCTION OF GLYOXAL

    公开(公告)号:DE3061326D1

    公开(公告)日:1983-01-20

    申请号:DE3061326

    申请日:1980-05-08

    Applicant: BASF AG

    Abstract: Glyoxal is prepared by oxidizing glycol in the presence of a silver catalyst, with subsequent or partial condensation of glycol, glyoxal, glycol aldehyde, formaldehyde and/or water by treatment with water or aqueous glyoxal solution in fine dispersion, under specific conditions with regard to the temperature and dispersion of the treatment liquid. The glyoxal which can be prepared by the process of the invention is a wrinkle-resist agent, an assistant for increasing the tear strength and elasticity of fiber materials, a tanning agent, a photographic hardener and a valuable starting material for the production of synthetic resins, textile assistants, paper assistants and plastics.

    6.
    发明专利
    未知

    公开(公告)号:ES2075229T3

    公开(公告)日:1995-10-01

    申请号:ES91101833

    申请日:1991-02-09

    Applicant: BASF AG

    Abstract: Process for the preparation of THF or of THF and gamma -butyrolactone from the hydrogenation product of the hydrogenation of maleic acid, succinic acid, maleic anhydride, succinic anhydride and/or fumaric acid by treating the crude hydrogenation product without prior workup at 100 to 300 DEG C with proton acids and isolating pure tetrahydrofuran and gamma -butyrolactone from the reaction mixture obtained by distillation.

    8.
    发明专利
    未知

    公开(公告)号:AT126222T

    公开(公告)日:1995-08-15

    申请号:AT91101833

    申请日:1991-02-09

    Applicant: BASF AG

    Abstract: Process for the preparation of THF or of THF and gamma -butyrolactone from the hydrogenation product of the hydrogenation of maleic acid, succinic acid, maleic anhydride, succinic anhydride and/or fumaric acid by treating the crude hydrogenation product without prior workup at 100 to 300 DEG C with proton acids and isolating pure tetrahydrofuran and gamma -butyrolactone from the reaction mixture obtained by distillation.

    9.
    发明专利
    未知

    公开(公告)号:DE4005293A1

    公开(公告)日:1991-08-22

    申请号:DE4005293

    申请日:1990-02-20

    Applicant: BASF AG

    Abstract: Process for the preparation of THF or of THF and gamma -butyrolactone from the hydrogenation product of the hydrogenation of maleic acid, succinic acid, maleic anhydride, succinic anhydride and/or fumaric acid by treating the crude hydrogenation product without prior workup at 100 to 300 DEG C with proton acids and isolating pure tetrahydrofuran and gamma -butyrolactone from the reaction mixture obtained by distillation.

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