The invention relates to the use of an ampholyte copolymer as a colloidal stabilizer in the preparation of aminoplast core-shell microcapsules containing an active material, wherein the ampholyte copolymer comprises:
2 to 99 mol % of cationic monomer having at least one quaternary ammonium group,
1 to 98 mol % of acrylic based monomer,
0 to 97 mol % of non-ionic monomer,
and wherein the ampholyte copolymer has more cationic charges than anionic charges, wherein the cationic charges of the ampholyte copolymer are exclusively due to the at least one quaternary ammonium group of the cationic monomer.
本发明涉及在制备含有活性材料的
氨基塑料核壳微胶囊时使用两性共聚物作为胶体稳定剂,其中两性共聚物包括
2 至 99 摩尔%的
阳离子单体,至少具有一个季
铵基团、
1 至 98 摩尔%的
丙烯酸类单体、
0 至 97 摩尔%的非离子单体、
其中两性共聚物的阳离子电荷多于阴离子电荷,两性共聚物的阳离子电荷完全来自
阳离子单体的至少一个季
铵基团。