Thermally gated photochromic medium
    3.
    发明授权
    Thermally gated photochromic medium 失效
    热门选择光致变色介质

    公开(公告)号:US07678515B2

    公开(公告)日:2010-03-16

    申请号:US12190531

    申请日:2008-08-12

    CPC classification number: B41M5/284 B41M2205/18 Y10S430/146

    Abstract: The presently disclosed embodiments are directed to image forming mediums useful for reimageable and transient documents. More particularly, the embodiments pertain to an image forming medium comprising thermally gated photochromic materials comprising diarylethene (DAE) photochromes which avoid problems with unwanted reduction in color contrast due to background coloration.

    Abstract translation: 目前公开的实施例涉及用于可再成像和暂时文件的图像形成介质。 更具体地说,这些实施方案涉及包含热门控的光致变色材料的图像形成介质,其包含二芳基烯(DAE)光致变色,其避免了由于背景着色引起的颜色对比度的不期望的减少的问题。

    Fluorinated comb-shaped polymers
    7.
    发明申请

    公开(公告)号:US20060270822A1

    公开(公告)日:2006-11-30

    申请号:US11441003

    申请日:2006-05-26

    CPC classification number: C08G65/4025 C08J5/2256 C08J5/2262 C08J2371/12

    Abstract: Fluorinated comb co-polymers have a main chain including a semi-rigid hydrophobic fluorinated poly(ether) backbone and comb segments in the form of flexible and monodisperse side chains that are more hydrophilic than the backbone. The side chains may be hydrophilic polymeric chains obtained from “living-type” polymerization, for example polymethacrylates, polyethylene oxides, polystyrenes. Hydrophilic functionality, for example, ionic groups may be selectively introduced onto the side chain post polymerization. The side chain may be sulfonated α-methyl polystyrene. Such polymers are useful in proton exchange membranes.

Patent Agency Ranking