Dispersion method
OwnerMichael Berkei, Ulrich Nolte +2inventors
InventorsMichael Berkei, Ulrich Nolte, Thomas Sawitowski, Wolfgang Pritschins
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Abstract
The invention relates to a method of dispersing carbon nanotubes (CNTs) in a continuous phase, especially in at least one dispersion medium, the carbon nanotubes, especially without prior pretreatment, being dispersed in a continuous phase, especially in at least one dispersion medium, in the presence of at least one dispersant (dispersing agent), with introduction of an energy input sufficient for dispersing, and also to the dispersions that are obtainable in this way, and to their use. With the method of the invention it is possible for the carbon nanotubes (CNTs) to be dispersed in high concentrations and with high storage stability.
Claims22
1-41. (canceled)
A method of dispersing carbon nanotubes (CNTs) in a continuous phase as the dispersion medium, wherein:
- first, before the dispersing operation, a method step is carried out in which the carbon nanotubes (CNTs) are contacted and homogenized with a continuous phase and at least one dispersant;
- and
- subsequently the carbon nanotubes (CNTs) are dispersed in the continuous phase in the presence of the dispersant, with introduction of an energy input sufficient for dispersing, in amounts of 1×10−1% to 30% by weight, based on the resulting dispersion, the amount of energy introduced, calculated as energy introduced per unit quantity of carbon nanotubes (CNTs) to be dispersed, being 15 000 to 100 000 kJ/kg.
Dependencies are inferred from the claim text.