7.
    发明专利
    未知

    公开(公告)号:BR9202059A

    公开(公告)日:1993-02-02

    申请号:BR9202059

    申请日:1992-05-29

    Applicant: BASF AG

    Abstract: Products of the condensation of sulphonated phenols, urea, further organic nitrogen bases and formaldehyde, obtainable by (A) sulphonation of phenols using from 1.0 to 1.5 mol of sulphuric acid per mole of phenol and (B) condensation of these sulphonation products with (a) from 0.5 to 1.8 mol of urea per mole of phenol, (b) from 0.001 to 0.5 mol of at least one further organic nitrogen base per mole of phenol, and (c) from 1.0 to 3.0 mol of formaldehyde per mole of phenol. The condensation products are suitable as tanning agents in the production of leather and pelts and as spray assistants for redispersible polymer powders.

    10.
    发明专利
    未知

    公开(公告)号:NO161384C

    公开(公告)日:1989-08-09

    申请号:NO833148

    申请日:1983-09-02

    Applicant: BASF AG

    Abstract: The subject invention relates to compositions which inhibit the corrosion caused by CO2 and H2S in the transport and storage of crude oils, which are generally water-in-oil, in particular salt-water-in-oil emulsions. The corrosion inhibitors are mixtures of certain imidazoline or tetrahydropyrimidine derivatives, precursors thereof, or their complexes with sulfur and certain maleinamidic acids.

Patent Agency Ranking