| 摘要 |
The invention concerns an aqueous dispersion capable of crosslinking by condensation into elastomer by eliminating water in the presence of a polycondensation catalyst, comprising, dispersed in a continuous aqueous phase, an organic phase containing at least one polymer including a polyether chain, optionally branched, bearing, per molecule, at least one terminal alkoxysilyl unit and at least two -OR groups borne by one or more silicon atoms, the dispersion containing further an emulsifier adapted to the formation of the dispersion and a polycondensation catalyst. The polymer preferably comprises at least two terminal alkoxysilyl units corresponding to the following formula (a): (R1-O)n(R2)mSi-, wherein n is 1, 2 or 3 and m is 0, 1 or 2, with n+m=3, the R1 groups, mutually identical or different, the R2 groups, mutually identical or different to R1, are selected from the linear or branched C1-C8 alkyl groups. The invention also concerns a mixed dispersion containing a silylated polyether organic phase and a silicone-based organic phase.
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