US 5,208,111 AGranted

One- or multi-layered layer elements applied to supports and their production

AssigneeBayer Aktiengesellschaft

InventorsGero Decher, Jong-Dal Hong

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Abstract

One- or multi-layered layer elements applied to supports are described, which consist of a) a modified support having an even surface, in which modification means the application of ions or ionisable compounds of the same charge over the entire area, and b) one or more layers made of organic materials which in each layer contain ions of the same charge, the ions of the first layer having the opposite charge of the modified support and in the case of several layers each further layer having again the opposite charge of the previous layer. Layer elements of this type applied to supports are produced by applying the individual layers from solutions of the organic materials in suitable solvents to modified supports by sequential physisorption (salt formation).

Claims8

Dependent claims

A layer element applied to a support, comprising:

(a) a modified support having an even surface, in which modification means the application of ions or ionizable compounds of the same charge over the entire surface area of the support, and
(b) one or more layers made of organic materials which in each layer contain ions of the same charge, the ions of the first layer having the opposite charge of the modified support and, in the case of further layers, each further layer having a charge opposite that of the previous layer,
wherein the organic material is a monomeric substance having two ionic or ionizable functional groups of the same charge, the monomeric substance having the formula
ion--Z.sup.1 --(--Y.sup.1 --Z.sup.2 --).sub.m --X--Z.sup.3 --Y.sup.2 --Z.sup.4 --ion (I)
in which
x represents ##STR15## in which the aromatic rings in these groups can be mono- to trisubstituted by methyl, fluorine or chlorine or can be hydrogenated to the cycloalkane,
Y.sup.1 and Y.sup.2, independently of one another, represent --(--CH.sub.2 --).sub.q --, --(--Si(CH.sub.3).sub.2 --O--).sub.q --, --(--CH.dbd.CH--).sub.q -- or --(C.tbd.C--).sub.q --, it being possible for the hydrogen atoms in these groups to be substituted in part or completely by methyl, fluorine or chlorine,
Z.sup.1, Z.sup.2, Z.sup.3 and Z.sup.4, independently of one another, represent a single bond, --O--, --S--, --CO--, --SO--, --SO.sub.2 --, --CO--O--, --O--CO--, .dbd.N--CO, --CO--N.dbd., --NH-- or --N(C.sub.1 -C.sub.4 -alkyl)--,
ion represents a cation, or an anion or a group which can be ionised to the cation or the anion,
m represents 0 or 1, preferably 1,
n represents integral values from 0 to 7,
o represents integral values from 1 to 3,
p represents the value 1 or 2 and
q represents integral values from 1 to 20.

11 more elements

A process for the preparation of a layer element applied to a support, comprising:

(a) modifying a support having a flat surface so that the support carries ions or ionizable compounds of the same charge over the entire surface area of the support;
and
(b) applying one or more layers made of organic materials, the organic materials in each layer having ions of the same charge, the organic materials being applied from a solution of said organic materials to the modified support, the organic material for the first layer having ions of the opposite charge relative to the charge of the ions of the modified support and, in the case of further layers, each further layer containing ions of opposite charge relative to the charge of the ions in the previous layer,
the organic material being either a monomeric substance having two ionic or ionizable functional groups of the same charge or polymers having a multiplicity of ionic or ionizable functional groups of the same charge (polyelectrolytes).

1 more element

Dependencies are inferred from the claim text.