| abstract |
The invention relates to the use of an ampholyte copolymer as a colloidal stabilizer in the preparation of aminoplastic shell-shell microcapsules containing an active material, wherein the ampholyte copolymer comprises: - 2 to 99 mol% of cationic monomer with at least one quaternary ammonium group,? 1 to 98 mole% of acrylic-based monomer, - 0 to 97 mole% of nonionic monomer, and where the ampholyte copolymer has more cationic charges than anionic charges, where the cationic charges of the ampholyte copolymer are exclusively due to at least one quaternary ammonium group of the cationic monomer. |