Invention Grant
- Patent Title: Marking based on modified chiral liquid crystal polymers
- Patent Title (中): 基于改性手性液晶聚合物的标记
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Application No.: US12783081Application Date: 2010-05-19
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Publication No.: US08426013B2Publication Date: 2013-04-23
- Inventor: Thomas Tiller , Frédéric Gremaud , Andrea Callegari
- Applicant: Thomas Tiller , Frédéric Gremaud , Andrea Callegari
- Applicant Address: CH Prilly
- Assignee: Sicpa Holding SA
- Current Assignee: Sicpa Holding SA
- Current Assignee Address: CH Prilly
- Agency: Greenblum & Bernstein, P.L.C.
- Main IPC: B41M5/28
- IPC: B41M5/28 ; B41M3/14 ; B42D15/10 ; C09K19/38 ; C09K19/52 ; G06K7/10 ; B41J2/00

Abstract:
A liquid crystal polymer marking is obtainable by a process that comprises applying a chiral liquid crystal precursor composition onto a substrate, heating the composition to a first chiral liquid crystal state, applying to at least one area of the precursor composition a chiral dopant composition, heating the at least one area to bring same to a second chiral liquid crystal state, and subsequently curing and/or polymerizing the resultant product. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
Public/Granted literature
- US20110133445A1 MARKING BASED ON MODIFIED CHIRAL LIQUID CRYSTAL POLYMERS Public/Granted day:2011-06-09
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