Ceskoslovenska Akademie Ved

Jaroslav Kahovec

Bedrich Porsch

Zdenek Matejka

Josef Tomasek

This invention relates to mixed silane reagents containing a complexon group in the reagent molecule, a method of making said reagents, and porous or nonporous inorganic materials having surface-bound complexon groups which are advantageously modified with the new reagents. The new mixed silane reagents are of the formula ##STR1## where R is methyl or ethyl and N is 0 or 1. The new reagents are produced by treatment of compounds of the formula

Silane reagents containing a complexon group

Polymeric polydonor complexons having more than six sites in a structural unit are described. The complexons are of the formulae: ##STR1## wherein  P is a linear or three-dimensional polymeric skeleton, x is oxygen or an ##STR2## group wherein R is hydrogen, an alkyl group of 1-6 carbon atoms, a phenyl group or a substituted phenyl group. The described complexons are obtained by reaction of a polymeric compound of the formula  P --XH wherein  P and X are as defined above with a dianhydride of the corresponding complexon in the presence of a tertiary amine and, optionally, an inert solvent.

Polymeric polydonor complexons and method for preparation thereof

The invention pertains to polymeric polydentate complexons (i.e. chelating agents) of general formulae I and II ##STR1## where P is a linear or three-dimensional polymeric skeleton and X is --0-- or ##STR2## while R is H, C.sub.1 -C.sub.6 alkyl, or phenyl or phenyl substituted with 1-2 C.sub.1 -C.sub.6 alkyl or alkoxy groups. Another objective of the invention is a method for producing the polymeric polydentate complexons described above, wherein a compound P -XH, where P and X have the above given meaning, reacts with 4,4'-ethylenebis(2,6-morpholinedione) the presence of an inert solvent and, if it is desired, also in the presence of acidic or basic catalysts, e.g. protic acids, Lewis acids, tertiary amines, and alkaline or alkaline earth salts of carboxylic acids.

Growing community of inventors

Prague, Czechia

Jaroslav Kahovec