WATERBORNE DISPERSIONS
The present invention relates to a waterborne dispersion comprising (A) amphiphilic block copolymer obtained with a controlled radical polymerization process and comprising at least blocks [A] and [B], whereby block [A] comprises ethylenically unsaturated monomer(s) bearing water-soluble and/or wate...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The present invention relates to a waterborne dispersion comprising (A) amphiphilic block copolymer obtained with a controlled radical polymerization process and comprising at least blocks [A] and [B], whereby block [A] comprises ethylenically unsaturated monomer(s) bearing water-soluble and/or water-dispersible functional groups (monomer(s) (i)), and block [B] comprises ethylenically unsaturatedmonomer(s) different from monomer(s) (i) (monomer(s) (ii)); and (B) polymer P comprising ethylenically unsaturated monomer(s) different from (i) (monomer(s) (ii)), characterized in that the amount ofblock copolymer is higher than 1 and lower than 30 wt.%, based on the total weight of monomers used to prepare the block copolymer and polymer P; the acid value of the composition consisting of blockcopolymer and polymer P is higher than 1 and at most 35 mg KOH per g of the block copolymer-polymer P composition; the block copolymer has a calculated glass transition temperature of higher than 10 deg C and lower than 250 deg |
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