SUN CARE COMPOSITIONS WITH UV REFLECTIVE PARTICLES

    公开(公告)号:US20220323312A1

    公开(公告)日:2022-10-13

    申请号:US17621035

    申请日:2020-06-25

    IPC分类号: A61K8/02 A61Q17/04 A61K8/81

    摘要: Described herein are sun care compositions, comprising UV reflective particles ground from an extruded film having a plurality of alternating layers of polycarbonate (PC) and poly(methyl methacrylate) (PMMA), wherein each layer is less than 150 nm thick; and at least one of a cosmetically acceptable emollient, humectant, vitamin, moisturizer, conditioner, oil, silicone, suspending agent, surfactant, emulsifier, preservative, rheology modifier, pH adjustor, reducing agent, anti-oxidant, and/or foaming or de-foaming agent, and methods of making and using the sun care compositions.

    Mold process for making nanofoam
    6.
    发明授权

    公开(公告)号:US10322534B2

    公开(公告)日:2019-06-18

    申请号:US15121604

    申请日:2015-05-20

    摘要: Prepare nanofoam by: (a) providing a mold (10) with a mold cavity (12) defined by mold walls defining a sealable port (32); (b) providing a foamable polymer mixture containing a polymer and a blowing agent at a pressure at least 690 kilopascals above the saturation pressure for the polymer and blowing agent; (c) introducing the foamable polymer mixture into the mold cavity (12) while maintaining a temperature and pressure at least 690 kilopascals above the saturation pressure and controlling the pressure in the mold cavity (12) by expanding a wall of the mold; and (d) releasing pressure around the foamable mixture by moving a mold wall (20) at a rate of at least 45 centimeters per second, causing the foamable polymer mixture to expand into nanofoam having a porosity of at least 60 percent, a volume of at least 100 cubic centimeters and at least two orthogonal dimensions of four centimeter or more.