Werkwijze voor de bereiding van een gemodificeerd polymeer voor poederverven
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 l...
Saved in:
Main Author | |
---|---|
Format | Patent |
Language | Dutch |
Published |
01.09.1995
|
Edition | 6 |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | 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. |
---|---|
Bibliography: | Application Number: NL19940000107 |