| 摘要 |
The invention relates to compounds of formula (I) (XaRbSi)m[ {B} ([O]oP[O]pR'cYd)n]4-a-b (I), where the groups, residues and indices have the following meanings: B = an at least doubly-valent straight chained or branched group with at least one organic polymerisable group and at least three carbon atoms, X = a group which may be cleaved from the silicon atom by hydrolysis, R = optionally substituted alkyl, alkenyl, aryl, alkylaryl or arylalkyl, R' = R, Y = Cl, OH or OR', R" = H, alkyl or aryl, a = 0, 1, 2 or 3, b = 0, 1, or 2, a + b together = 1, 2 or 3, c = 0, 1 or 2, d = 0, 1 or 2, c + d together = 2, m = at least 1, with the proviso that m is not greater than 1 when a + b = 1 or 2, n = at least 1, o = 0 or 1 and p = 0 or 1. The invention further relates to a series of methods by which the above compounds may be produced.
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