| 摘要 |
The invention relates to novel cyclic siloxane compounds of the following general formula (I):in which:n=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 preferably 1, 2, 3, 4, 5;A=H or C1-C15 alk(en)yl, C3-C15 cycloalk(en)yl, C6-C12 aryl, C8-C18 alkaryl, where, in the said radicals, in each case one or more C atoms can be replaced by O, C=O, O(C=O), SiR2 and/or NR, R being an aliphatic radical with 1 to 7 C atoms, in which one or more C atoms can be replaced by O, C=O, and/or O(C=O);B=E or a linear, branched or polycyclic aliphatic- or aromatic-groups-containing hydrocarbon radical which links 2 to 10 of the cyclosiloxane radicals defined above, less B, to one another and contains 2 to 50 C atoms and additionally 0 to 30 other atoms from the group O, N, S, P, Si, Cl, F, Br, I and from which correspondingly 1 to 9, preferably 1 to 4 of the above defined cyclosiloxane radicals, less B, are pending;E=A or a polymerizable group G-Q-L, where on average up to 50% or less of the groups E correspond to representatives of A;G=C1-10 alk(en)ylene;Q=O, N-A or a di- or polyvalent linear, branched or cyclic alcohol, amine or aminoalcohol radical with 2 to 10 C atoms;L=an organic radical, containing a C=C double bond, with 2 to 10 C atoms;and with the proviso that no annelated siloxane ring systems can occur in (I),and also dental compositions which contain the compounds of formula (I) and/or compounds of formula (II):in which:T=independently of each other H or C1-C10 alk(en)yl, C3-C10 cycloalk(en)yl, C6-C12 aryl or C8-C8 alkaryl;N=a polymerizable group R1-R2-R3;b=0 to 500, where the proportion b may be at most 50% of the repeat units (b+c);c=1 to 1000;R1=C1-C10 alk(en)ylene;R2=O, N-T or a di- or polyvalent linear, branched or cyclic alcohol, amine or aminoalcohol radical with 2 to 10 C atoms;R3=an organic radical, containing a C=C double bond, with 3 to 10 C atoms;V=SiMe2T, SiEt2T, SiMePhT, SiPh2T.
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