| 摘要 |
The invention relates to a process for the preparation of a modified polymer by reaction between a reactive polymer and at least a compound containing two or more functional groups. The polymer, which is solid at room temperature, is mixed, at a temperature at which the viscosity of the polymer is lower than 10000 dPas (measured according to Emila), with a compound containing two or more functional groups in a mixing means for achieving a homogeneous product and the mean residence time and the residence time distribution being chosen so that more than 50% of the reactive groups of the polymer has reacted. As means to make the composition homogeneous use is made of a static mixer. The functional groups of the compound containing two or more functional groups have different reactivities. The invention also relates to a binder composition, which comprises the modified polymer thus obtained and a crosslinker.
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