10.
    发明专利
    未知

    公开(公告)号:DE3145733A1

    公开(公告)日:1983-05-26

    申请号:DE3145733

    申请日:1981-11-19

    Applicant: HOECHST AG

    Abstract: Bis-betaines of the formula in which R denotes a saturated or an olefinically unsaturated hydrocarbon radical which has 1 to 3 double bonds and 8 to 22 carbon atoms, n1 and n2 represent an integer from 2 to 3, and n1 and n2 can be identical or different, m1 and m2 represent an integer from 1 to 4, and m1 and m2 can be identical or different, and a, b, c and d, which are identical or different, each is a number from 1 to 5, but the sum (a+b+c+d) should be at most 10. The compounds are prepared from primary amines of the formula RNH2, by dicyanoalkylation, hydrogenation, ethoxylation and reaction with alkali metal salts of omega -halogenocarboxylic acids. They are suitable for formluating cosmetic and industrial cleaning agents.

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