29.
    发明专利
    未知

    公开(公告)号:DD271333A5

    公开(公告)日:1989-08-30

    申请号:DD31759188

    申请日:1988-07-05

    Applicant: HOECHST AG

    Abstract: The novel urethanes are composed essentially of fluoroalcohol-isocyanate adducts as the fluoro component and a polysiloxane component, the two components being combined in a structurally specific manner. The novel urethanes are prepared by reacting the fluoroalcohol-isocyanate adducts with the polysiloxane in a molar ratio of 1 to 2:1 at a temperature of 30 DEG to 130 DEG C. The novel urethanes are preferably used for finishing textiles, to which they also impart the property of a soft handle in addition to good hydrophobicity and oleophobicity. They are also suitable for finishing leather, skins and wood.

    30.
    发明专利
    未知

    公开(公告)号:BR8803657A

    公开(公告)日:1989-02-14

    申请号:BR8803657

    申请日:1988-07-21

    Applicant: HOECHST AG

    Inventor: WEHOWSKY FRANK

    Abstract: Perfluoroalkyl-containing epoxides of the formula 1 in which Rf is a perfluoroalkyl-containing radical, X is halogen, a is 1 to 4 and b is 0 to 20, are prepared by reacting a fluoroalcohol/ epihalohydrin adduct of the formula 2 in which Rf, X, a and b have the meanings mentioned, with alkali metal hydroxide or alkaline earth metal hydroxide in the form of an aqueous solution in the presence of phase-transfer catalysts and at a pH of 9 to 12. The perfluoroalkyl-containing epoxides are those of the formula 3 in which Rf, X and a have the meanings mentioned and b is 1 to 20. The epoxides in question are advantageous monomers for the preparation of fluorine-containing epoxy resins and epoxy copolymers, which in turn are good finishing agents for textiles and leather.

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