CARMINE COLORANTS
    2.
    发明专利

    公开(公告)号:CA2852325C

    公开(公告)日:2018-08-28

    申请号:CA2852325

    申请日:2014-05-21

    Applicant: XEROX CORP

    Abstract: A compound comprises: a polymer having a backbone; and a biobased colorant comprising a carmine moiety; wherein the carmine moiety is one of (a) an integral part of the polymer backbone; and (b) covalently attached to a reaction site on the polymer.

    SENSORS AND METHODS FOR DETERMINING WHETHER AN ITEM HAS BEEN EXPOSED TO AN ENVIRONMENTAL CONDITION

    公开(公告)号:CA2714321C

    公开(公告)日:2013-11-19

    申请号:CA2714321

    申请日:2010-09-03

    Applicant: XEROX CORP

    Abstract: A method for determining whether an item has been exposed to an environmental condition during a monitoring period. The method includes placing a sensor at least in proximity to the item at the beginning of the monitoring period so that the sensor will be exposed to a level of an environmental condition that can be correlated to an exposure level of the item to the environmental condition; reading the sensor; and determining from reading the sensor whether the item has been exposed to the environmental condition. The sensor includes a detecting material comprising a photochromic or photothermochromic material, the detecting material selected so that upon exposure to the environmental condition the detecting material exhibits a detectable color change.

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