| 摘要 |
Polymeric grout formulations comprising one or more urethane oligomers of at least two polymerized units comprising the reaction product of: (a) one or more polyfunctional isocyanate compounds; (b) one or more polyols; (c) one o r more monoalcohols selected from the group consisting of fluorocarbon monoalcohols; and (d) one or more silanes. In another embodiment, the polymeric grout composition comprises an additive comprising an oligomer comprising at least two polymerized units, each said polymerized unit comprising a urethane group, and said oligomer being substituted with (i) on e or more covalently bonded perfluoroalkyl groups, or one or more covalently bonded perfluoroheteroalkyl groups, and (ii) one or more covalently bonded silyl groups.
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