Polysiloxanes containing heterocyclic functions, their preparation and use

A process for the preparation of organosiloxane compounds bearing nitrogen-containing heterocycles, which contain at least one unit of the general formula (I), ##STR26## in which organosilicon compounds containing units of the general formula

• W.sub.a R.sup.2.sub.b SiX.sub.c O.sub.[4-(a+b+c)]/2 (XIV),
• where
• R.sup.2 is a monovalent, divalent or trivalent hydrocarbon radical having from 1 to 50 carbon atoms per radical, which is optionally substituted by halogen, amine, ammonium, mercapto, acrylate or maleinimide groups,
• X is a chlorine atom or a radical of the formula --OR.sup.4, where
• R.sup.4 is a hydrogen atom or an alkyl radical having from 1 to 8 carbon atoms per radical, optionally substituted by an ether oxygen atom, or is a radical of the general formula (V)
• --R.sup.5 --[OCH(CH.sub.3)CH.sub.2 ].sub.e [OCH.sub.2 CH.sub.2 ].sub.f [O(CH.sub.2).sub.4 ].sub.g OR.sup.3 (V)
• where
• R.sup.5 is a divalent hydrocarbon radical having from 2 to 30 carbon atoms per radical, optionally interrupted by one or more groups selected from groups of the general formulae (VI) and (VII) ##STR27## where R.sup.3 is a radical R.sup.4 or a radical of the formula --C(O)--R.sup.4,
• e, f and g are each an integer from 0-200, with the proviso that the sum e+f+g is .gtoreq.1,
• a is 0, 1 or 2,
• b is 0, 1, 2 or 3,
• c is 0, 1, 2 or 3 and the sum a+b+c is .ltoreq.4, and
• W is a radical of the general formulae (XV)
• --R.sup.8 --(NR.sup.4 --CH.sub.2 CH.sub.2).sub.d --NR.sup.4.sub.2, --R.sup.8 --SH, ##STR28## where R.sup.7 is a hydrogen atom, a substituent selected from the group consisting of --F, --Cl, --Br, --I, --OH, --SCN, --NC, --NO.sub.2, --CN, --SH, --NCO, --OR.sup.4, --COOH, --SO.sub.3 H, --O--PO.sub.3 H, and --SO.sub.2 --R.sup.4, or an optionally substituted mono-, di- or trivalent hydrocarbon radical having from 2 to 100 carbon atoms per radical optionally interrupted by --C(O)--, --C(O)--O--, --C(O)--NR.sup.3 --, --NR.sup.3 --, --O--, --S--;
• G is a radical of the formulae --O-- or --NR.sup.3 --,
• d is 0 or an integer from 1 to 8,
• z is 1 or 2 depending on the valency of R.sup.8,
• R.sup.9 is a hydrogen atom or a methyl group and
• R.sup.8 is a di- or trivalent, optionally substituted hydrocarbon radical having from 2 to 100 carbon atoms per radical, optionally interrupted by groups selected from --C(O)--, --C(O)--O--, --C(O)--NR.sup.3 --, --NR.sup.3 --, --O--, --S--, with the proviso that at least one unit W is present per molecule, are reacted with heterocyclic compounds selected from compounds of the general formulae (XVI), (XIX) and (XX)
• a) B--(R.sup.8).sub.u --R.sub.10 (XVI)
• where
• B is a radical of the general formulae (IX) ##STR29## where z is 1 or 2, depending on the valency of R.sup.6,
• Y is selected from the group consisting of the formulae --CR.sup.7.sub.2 --, .dbd.CR.sup.7 --, --NR.sup.7 --, .dbd.N--, --O--, .dbd.PR.sup.7, .dbd.P--, --S--, and .dbd.C.dbd.O
• Z is selected from the group consisting of the formulae .dbd.C.dbd., .dbd.CR.sup.7 --, .dbd.N--, and .dbd.P--, with the proviso that R.sup.6 is in a chemically useful position on the heterocycle, the heterocycle has a chemically useful structure and contains at least one nitrogen atom, the heterocycle being saturated, unsaturated or aromatic,
• R.sup.8 is as defined above,
• u is 0 or 1 and
• R.sup.10 is a hydrogen atom, a group --SH or a radical of the general formulae (XVII) or (XVIII) ##STR30## where d, R.sup.4, R.sup.9 and G are as defined above, with the proviso that, per molecule, either at least one group --SH, or a radical of the general formulae (XVII) or (XVIII) is present, or at least one Y is N--H;
• b) R.sup.10 --(R.sup.8).sub.u --B.sup.1 --(R.sup.8).sub.u --R.sup.10(XIX)
• where
• B.sup.1 is a radical of the general formula (XI) ##STR31## where Y and Z are as defined above, with the proviso that the heterocycle has a chemically useful structure and contains at least one nitrogen atom and may be saturated, unsaturated or aromatic;
• u, R.sup.8 and R.sup.10 are as defined above,
• with the proviso that, per molecule,
• either at least two groups of the general formula (XVII) are present or
• at least two groups selected from the group consisting of --SH and the general formula (XVIII) are present, or
• at least one group selected from the group consisting of --SH and the general formula (XVIII) is present, and at least one Y is N--H or at least two Y are N--H, ##STR32## where B.sup.2 is a radical of the general formulae (XIII) ##STR33## where Y and Z are as defined above, with the proviso that the heterocycle has a chemically useful structure, contains at least one nitrogen atom and is saturated, unsaturated or aromatic;
• u, R.sup.8 and R.sup.10 are as defined above,
• with the proviso that, per molecule,
• either at least three groups of the general formula (XVII) are present, or
• at least three groups selected from the group consisting of --SH and the general formula (XVIII) are present, or
• at least two groups selected from the group consisting of --SH and the general formula (XVIII) are present and at least one Y is N--H or
• at least one group selected from the group consisting of --SH and the general formula (XVIII) is present and at least two Y are N--H or at least three Y are N--H.