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公开(公告)号：US20230404875A1
公开(公告)日：2023-12-21
申请号：US18251037
申请日：2021-12-02
发明人： Luqing Qi , Ying O'Connor , Yuanqiao Rao , David L. Malotky , Eric Wasserman , Fanwen Zeng , Junsi Gu , Stephanie A. Bloxom
摘要： An aqueous personal care rinse off composition is provided, comprising: a dermatologically acceptable aqueous vehicle; a dermatologically acceptable cleaning surfactant; and a plurality of composite opacifier particles, wherein the composite opacifier particles comprise metal oxide particles that are partially or completely encapsulated by a wax; wherein the metal oxide particles are selected from the group consisting of zinc oxide, titanium oxide and mixtures thereof; wherein the metal oxide particles have a z average particle size of >100 nm as measured by dynamic light scattering; wherein the wax has a melting point temperature of 50 to 110° C.; and wherein the composite opacifier particles have a z average particle size of >100 nm to 2,000 nm as measured by dynamic light scattering.
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公开(公告)号：US20230242757A1
公开(公告)日：2023-08-03
申请号：US18013626
申请日：2021-07-07
发明人： Sven Claessens , Kathleen Barnes , Stephanie A. Bloxom , Niek Thomaes , Antoon De Smet , Nicholas B. Schaffer
CPC分类号： C08L71/02 , C08G65/2609
摘要： A preformed thermoplastic polymer is dispersed into a polyol via a mechanical dispersion process. A stabilizer is present to stabilize the dispersed polymer particles. An antisolvent is also present. The antisolvent has been found to lead to smaller particle size and increased dispersion stability.
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