| abstract |
The present invention relates to polymer-coated microparticles comprising at least one HASE acrylic copolymer, at least one solid-liquid phase change material having a phase transition temperature of 20 to 90 ° C. and at least one active ingredient. More specifically, the microparticles have at least one anionic monomer having a polymerizable vinyl functional group and a carboxyl group, at least one nonionic hydrophobic monomer having a polymerizable vinyl functional group, and at least one having a polymerizable vinyl functional group and a hydrophobic hydrocarbon chain. And at least one HASE acrylic copolymer comprising one associative oxyalkylated macromonomer. |