| abstract |
The invention relates to the use of amphoteric copolymers as colloidal stabilizers in the preparation of aminoplast core-shell microcapsules containing active substances, comprising The amphoteric copolymer is -2 to 99 mol% of cationic monomer having at least one quaternary ammonium group -1 ~ 98 mol% acrylic monomer -0-97 mol% nonionic monomer, The amphoteric copolymer has more cationic charge than anionic charge, It relates to the use of an amphoteric copolymer, wherein the cationic charge of the amphoteric copolymer is due only to at least one quaternary ammonium group of the cationic monomer. |