| 摘要 |
The present invention relates to silicic acid (hetero)polycondensates comprising structural units of a following formula (1);
wherein radicals, indices, and bonding symbols have the following meaning:
R1 refers to a group that is accessible to a thiol-ene polyaddition when a thiol is added and can also be polymerized by a ROMP (ring opening metathesis polymerization),
R2 is selected from (a) organically polymerizable groups that are available to a thiol-ene polyaddition when a thiol is added, but not to a ROMP, (b) —COOR8 with R8 equal to R4 or M1/xx+, (c) —OH or COOH, and (d) —(O)bP(O)(R5)2, wherein b is equal to 0 or 1, —SO3M1/xx+, NR72 or NR7+3. |
| 主权项 |
1. Silicic acid (hetero)polycondensate comprising structural units of a following formula (1) in which radicals, indices, and bonding symbols have the following meaning: R1 refers to a group that is available to a thiol-ene polyaddition when a thiol is added and can also be polymerized by a ROMP (ring opening metathesis polymerization), R2 is selected from (a) organically polymerizable groups which are available to a thiol-ene polyaddition when a thiol is added, but not to a ROMP, (b) —COOR8 with R8 equal to R4 or M1/xx+, (c) —OH or COOH, and (d) —(O)bP(O)(R5)2, in which b is equal to 0 or 1, —SO3M1/xx+, NR72 or NR73+, wherein Mx+ is an x-fold positively charged metal cation, R4 is a non-substituted or substituted hydrocarbon radical, Radicals R5 independently from each other represent a non-substituted or substituted hydrocarbon radical or OR6, and R6 is hydrogen or a non-substituted or substituted hydrocarbon radical, R7 has either the same meaning as R4, or two radicals R7 together represent a divalent, substituted or non-substituted, saturated or unsaturated hydrocarbon group, R3 represents a radical bonded to a silicon atom of said formula (1) by a carbon atom, to which said radical R1 is bonded o-fold and said radical R2 is bonded n-fold and which is equivalent or has different meanings in the same condensate, each of the indices n and o represents 0, 1, 2 or greater than 2 with the stipulation that n+o represents at least 2, at least one of the three bonds of the Si atom not further identified represents an oxygen bridge to an additional silicon atom or optionally to another metal atom, while the other two bonds either have the same meaning or instead represent an OH group, a hydrolysable group, or a radical bonded the said silicon atom via carbon, wherein each radical R3 of said structure (1) must have at least one group R1 or one group R2 having the meaning specified in (a), wherein, if said radicals R3 are equal,
(x) each radical has at least one group R1 and either one group R2 with the meaning specified in (a) or a second group R1, whereas in both cases, n must be at least 1 or(xx) if, in addition, n is equal to 0, at least two groups R1 have a different meaning, and if said radicals R3 are different, a first part of the radicals has at least one group R1 and one of the following two conditions must be complied with:
(x) an additional part of the radicals has at least one group R2 with the meaning specified in (a) or (d), and(xx) two different radicals R3 each have at least one group R1. |
