23.
    发明专利
    未知

    公开(公告)号:BR8606156A

    公开(公告)日:1987-09-22

    申请号:BR8606156

    申请日:1986-12-11

    Applicant: HOECHST AG

    Abstract: Aqueous polymer dispersions based on (A) 1 to 99% by weight of a carboxy-functional polymer which additionally contains epoxy groups, (B) 1 to 99% by weight of a polymer obtained from at least one alpha , beta -olefinically unsaturated monomer, the polymer (B) having been prepared in the presence of polymer (A), (C) 0 to 20% by weight of anionic or non-ionic emulsifiers or a mixture of the two or protective colloids, the quantity data relating to the solids content of components (A) to (C), and if appropriate further conventional additives, the sum of all the components always being 100%. The invention also relates to a process for the preparation of such polymer dispersions, which are particularly suitable as a binder component in metallic basecoats or metal-free, (uni) basecoats and electrocoatings.

    THERMOSETTING COMPOSITIONS
    28.
    发明专利

    公开(公告)号:CA1104746A

    公开(公告)日:1981-07-07

    申请号:CA296888

    申请日:1978-02-15

    Applicant: HOECHST AG

    Abstract: A b s t r a c t A thermosetting coating or adhesive composition based on A) at least one component selected from the group consisting of oligomeric and polymeric compounds containing at least of the functional groups hydroxyl and epoxy groups, and B) a polycarboxylic acid mixture comprising trimellitic acid and a major amount of at least one compound of one of the formulae (I) (II) (III) wherein R, R' and R''', being the same or different, each represents a di- to hexavalent hydrocarbon radical having a total of from 1 to 12 carbon atoms, said radical containing form zero to 2 olefinic double bonds, said radical without double bonds being interrupted by up to 3 ether bridges: x and y which may be the same or different, each represents an integer of from 2 to 6; t an integer of from 1 to 5; and z and u, which may be the same or different, each represents zero or an integer of from 1 to 5 and a process for coating a substrate with said composition.

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