35.
    发明专利
    未知

    公开(公告)号:DE3708298A1

    公开(公告)日:1988-09-22

    申请号:DE3708298

    申请日:1987-03-14

    Applicant: BASF AG

    Abstract: 1. A glycol-based coolant mixture which is free of nitrites and phosphates, containing a) 1 - 5% by weight of an alkali metal salt of acid II see diagramm : EP0283806,P7,F1 where R is a -CH2 -, see diagramm : EP0283806,P7,F2 see diagramm : EP0283806,P7,F3 or CH2 CH2 CH2 group, b) 0.1 - 1% by weight of a silicate of the general formula III (MO)q SiO4-q/2 where M is an alkali metal and q is from 0.4 to 4, c) 0.01 - 0.2% by weight of a silicate stabilizer, d) 0 - 0.5% by weight of an alkali nitrate, e) 0.05 - 0.2% by weight of benzotriazole or tolutriazole, f) 0.5 - 2% by weight of borax, and g) 0.05 - 1% by weight of NaOH, all the percentages being based on the glycol present in the coolant mixture.

    Inhibitors of corrosion by CO2 and H2S in water-in-oil emulsions

    公开(公告)号:DE3714856A1

    公开(公告)日:1987-11-26

    申请号:DE3714856

    申请日:1987-05-05

    Applicant: BASF AG

    Abstract: There are proposed inhibitors of corrosion by CO2 and H2S in water-in-oil emulsions, containing a) imidazoline or tetrahydropyrimidine derivatives of the general formula I and/or b) their open-ring precursors of the general formula II where in the formulae I and II the radical R stands for C7-C22-alkyl or -alkenyl, n stands for an integer 2 or 3, x denotes an integer from 0 to 5, Y stands for H, C8-C18-alkyl or -alkenyl, and in which in the formula I the radical Y can also stand for with the above substituent meanings and in which in the formula II the radical Y can also stand for with the above substituent meanings.n

Patent Agency Ranking