Mixtures for the coating of metallic surfaces

    公开(公告)号:AU2013343699A1

    公开(公告)日:2015-05-14

    申请号:AU2013343699

    申请日:2013-11-04

    Applicant: BASF SE

    Abstract: A method for coating metallic surfaces, in which the metallic surface is contacted with an aqueous copolymer dispersion, wherein the aqueous copolymer dispersion contains an effective amount of magnesium ions and phosphate or phosphonate ions, and wherein the copolymers present in the dispersion are formed from the following components: (A) from 20 to 95% by weight of monoethylenically unsaturated hydrocarbons and/or hydrocarbons having two conjugated double bonds, (B) from 5 to 80% by weight of monoethylenically unsaturated monomers having acid groups and/or the anhydrides or salts thereof. The invention further provides metallic surfaces coated with such copolymers and for the use of such aqueous copolymer dispersions for coating of metallic surfaces.

    13.
    发明专利
    未知

    公开(公告)号:BRPI0618534A2

    公开(公告)日:2012-05-08

    申请号:BRPI0618534

    申请日:2006-11-08

    Applicant: BASF SE

    Abstract: The invention relates to a tube bundle heat exchanger (R) for removing dissolved substances from a polymer solution (P) by degassing, having a bundle of tubes (R) which are arranged parallel to one another and vertically and are fastened at both ends in each case in one tube plate (B), and having a degassing region below the lower tube plate (B), having an insert (1) in each tube (R), which insert (1) narrows the free throughflow cross section through the tube (R), and wherein the polymer solution (P) is supplied into the tubes (R) in a single-phase liquid state, and having a casing space around the tubes (R) which is traversed by a heat carrier, wherein the degassing takes place by means of a pressure drop between the inlet pressure of the polymer solution (P) in the tube bundle heat exchanger (R) and the degassing region, characterized in that each insert (1) is designed in such a way as to generate a pressure step between the inlet pressure and the pressure in the degassing region, by means of which pressure step a predefined low residual content of dissolved substances is obtained in the degassed polymer, and an additional heat input which is necessary for this purpose takes place via the heat carrier into the single-phase liquid polymer solution (P).

    Polímeros que contienen S-viniltioalcanoles

    公开(公告)号:ES2653550T3

    公开(公告)日:2018-02-07

    申请号:ES14780872

    申请日:2014-10-06

    Applicant: BASF SE

    Abstract: Procedimiento para la preparación de polímeros que contienen como monómero S-viniltioalcanol, mediante polimerización por radicales, caracterizado porque la polimerización es ejecutada en solución acuosa, con la condición de que para la preparación de los polímeros no se use N-vinilpirrolidona como monómero y que se use por lo menos otro monómero diferente de un S-viniltioalcanol, siendo el otro monómero un monómero con una insaturación monoetilénica soluble en agua, excepto vinilpirrolidona.

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