| 摘要 |
The present invention relates to a process for a chain extension of radicals bonded to silicon via carbon in silanes or siloxanes while maintaining or increasing the number of functional groups on the respective Si—C-bonded radicals, wherein a silane or siloxane with a radical bonded to a silicon atom by a carbon atom, which bears at least two functional groups, wherein a first group of the functional groups is an unsaturated, organically polymerizable group and a second group of the functional groups is selected from among;(a) additional unsaturated, organically polymerizable groups,
(b) COOR8 or —(O)bP(O)(R5)2 and (c) —OH,
with R8 equal to R4 or M1/xx+ wherein Mx+ is a hydrogen or an x-fold positively charged metal cation, and b=0 or 1,
is converted in a first reaction with a compound of a formula (I)
;X—W—(Z)a (I);wherein
X is SH, NH2 or NHR4, Z is OH, the carboxylic acid radical —COOH or a salt or an ester of this radical or a silyl radical, W is a substituted or non-substituted hydrocarbon, the chain of which can be interrupted by —S—, —O—, —NH—, —NR4—, —C(O)O—, —NHC(O)—, —C(O)NH—, —NHC(O)O—, —C(O)NHC(O)—, —NHC(O)NH—, —S(O)—, —C(S)O—, —C(S)NH—, —NHC(S)—, —NHC(S)O—, and a is 1, 2, 3, 4 or a greater whole number,
wherein R4 is a non-substituted or substituted hydrocarbon radical,
R5 is a non-substituted or substituted hydrocarbon radical or OR6,
R6 is hydrogen or a non-substituted or substituted hydrocarbon radical to such an extent that the radical X connects to the first functional group.
;Furthermore, the invention relates to multiple processes, which, based on the aforementioned first reaction, comprise additional process steps and either lead to compounds/silicic acid polycondensates with reactive groups Q, wherein Q is OH, NR72, NR73+, CO2H, SO3H, PO(OH)2 PO(OR4)2 or a salt of the aforementioned acids, wherein R4 has the meaning specified above for formula (I), and R7 either has the same meaning as R4 or two radicals R7 together can represent a potentially substituted, potentially unsaturated alkylene group, or to compounds/silicic acid polycondensates, in which unsaturated, organically polymerizable groups are located farther out, wherein the Si—C-bonded radicals can potentially have a dendrimer-like structure. Products of the process pursuant to the invention and organic polymers produced as a result are likewise encompassed by the invention. |
| 主权项 |
1. A process for a chain extension of Si—C bonded radicals of silanes or siloxanes having at least two functional groups, wherein the number of functional groups on the respective Si—C bonded groups is maintained or increased,
wherein a silane or siloxane with a radical bonded to a silicon atom by a carbon atom, the radical bearing at least two functional groups, wherein a first group of the functional groups is an unsaturated, organically polymerizable group and a second group of said functional groups is selected among (a) additional unsaturated, organically polymerizable groups, (b) COOR8 or —(O)bP(O)(R5)2 and (c) —OH, with R8 equal to R4 or M1/xx+, Mx+ being hydrogen or an x-fold positively charged metal cation, and b=0 or 1, is converted in an initial reaction with a compound of a formula (I)
X—W—(Z)a (I) wherein X is SH, NH2 or NHR4, Z is OH, a carboxylic acid group —COOH or a salt or an ester of said group or a silyl group, W is a substituted or non-substituted hydrocarbon group, a chain of which can be interrupted by —S—, —O—, —NH—, —NR4—, —C(O)O—, —NHC(O)—, —C(O)NH—, —NHC(O)O—, —C(O)NHC(O)—, —NHC(O)NH—, —S(O)—, —C(S)O—, —C(S)NH—, —NHC(S)—, —NHC(S)O—, and a represents 1, 2, 3, 4 or a greater whole number, and wherein R4 is a non-substituted or substituted hydrocarbon group, R5 is a non-substituted or substituted hydrocarbon group or OR6, and R6 is hydrogen or is a non-substituted or substituted hydrocarbon group, such that the group X reacts with the first functional group. |
