Compositions – Liquid crystal compositions
Patent
1995-02-17
1996-05-14
Bleutge, John C.
Compositions
Liquid crystal compositions
25229966, 25229967, 522 1, 522180, 524205, 524293, 528376, 528360, C09K 1902, C09K 1952, C08G 7504, C08L 8102
Patent
active
055164552
ABSTRACT:
A polymer dispersed liquid crystal composite prepared from: (1) at least one multifunctional electron-rich alkene that does not undergo appreciable homopolymerization and is selected from the group consisting of (a) vinyl ethers and vinyl sulfides; (b) keteneacetals, ketenethioacetals and methylene oxathiolanes, wherein the carbon of the carbon-carbon double bond not bearing the electron donating group has bonded to it H or a combination of H and a C1 to C.sub.6 alkyl, preferably a methyl group; (c) ortho or para vinyl phenyl ethers or thioethers (also known as styryloxy or styrylthio ether monomers); or (d) bicylic alkenes which have, as a result of their stereoelectronic configuration, unequal .pi.-electron density above and below the plane of the carbon-carbon double bond axis; (2) a multifunctional thiol; (3) a photoinitiator; and (4) liquid crystal material.
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Jacobine Anthony F.
Rakas Margaret A.
Woods John G.
Bleutge John C.
Loctite Corporation
Wilson D. R.
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