| 摘要 |
PCT No. PCT/EP94/00607 Sec. 371 Date Nov. 13, 1995 Sec. 102(e) Date Nov. 13, 1995 PCT Filed Mar. 2, 1994 PCT Pub. No. WO94/20560 PCT Pub. Date Sep. 15, 1994Plastics with at least one polyaddition product which contains silane, ether, urethane and optionally urea groups and has the following features: a content of terminally located alkoxysilyl groups of the formula -NR-(CH2)m-SiR1R2R3, in which m is the number 3, R is hydrogen or a group of the formula -(CH2)m-SiR1R2R3 and at least one of the groups R1, R2 and R3 is a group of the formula -(O-CpH2p)q-O-A-R4, in which p is the number 3, q is a number in the range from 1 to 100 and A is a single bond and R4 is an organic radical defined in more detail; and the remaining groups R1, R2 and R3 are methyl, ethyl or C1- to C4-alkoxy, the plastics furthermore comprising at least one catalyst for condensation of the silane groups, are suitable as impression, duplicating and modelling compositions, in particular for dental purposes.
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