Wenjun Xu,Fanwen Zeng,Benjamin Yezer,Liang Chen,Dale C. Schmidt,Inna Shulman
申请号：
US16634320
公开号：
US20200268619A1
申请日:
2018.06.28
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A suncare formulation comprising: a dermatologically acceptable organic carrier； a UV radiation absorbing agent； and an SPF booster； wherein the SPF booster comprises a multistage polymeric particle having a core comprising polymerized units of a monoethylenically unsaturated carboxylic acid core monomer and a non-ionic ethylenically unsaturated core monomer； an inner shell comprising polymerized units of a non-ionic ethylenically unsaturated inner shell monomer； a monoethylenically unsaturated carboxylic acid inner shell monomer and an aliphatic inner shell monomer； an outer shell comprising polymerized units of a non-ionic ethylenically unsaturated outer shell monomer； an aliphatic outer shell monomer； a monoethylenically unsaturated non-carboxylic acid outer shell monomer and an ethylenically unsaturated surfactant outer shell monomer； wherein the core, when dry, contains a void； wherein the multistage polymeric particle has an average particle size, when dry, of 50 to 1,000 nm.
