Patent ID: 6660344
Filing Date: 2003-12-09
Classification: C07D,C09K

Abstract:
A photopolymerizable liquid crystalline dioxetane compound having the general formula I: wherein:R1 and R2 are independently selected from straight or branched C1-C4 alkyl and hydrogen; X and Xâ€² are independently selected from oxygen, sulfur, a single covalent bond, Oâ€”COâ€”, â€”COâ€”Oâ€”, and â€”Oâ€”COâ€”Oâ€”; Y and Yâ€² are spacer groups having each independently 1 to 30 carbon atoms (linear or branched), in which the carbon chain may be interrupted by sulfur in the thioether function, or, in which the carbon chain may be interrupted by oxygen in the ether function (i) when the X and Xâ€² and Z and Zâ€² moieties are independently selected from oxygen, sulfur, Oâ€”CO, â€”COâ€”Oâ€”, and Oâ€”OCOâ€”Oâ€”, or (ii) when the X and Xâ€² and Z and Zâ€² moieties are single covalent bonds then the carbon chain is greater than 2 carbon atoms; Z and Zâ€² are independently selected from oxygen, sulfur, a single covalent bond, â€”Oâ€”COâ€”, â€”COâ€”Oâ€”, and â€”Oâ€”COâ€”Oâ€”; and M is any suitable mesogenic group.