Compositions – Liquid crystal compositions – Containing nonchiral additive having no specified mesophase
Patent
1989-12-19
1991-04-30
Stoll, Robert L.
Compositions
Liquid crystal compositions
Containing nonchiral additive having no specified mesophase
25229901, 428 1, 350350R, 350347V, 350320, C09K 1954
Patent
active
050116240
ABSTRACT:
A composite material includes droplets of a liquid crystal material dispersed within a matrix of a photopolymerized polymer. The material is prepared by forming a solution of the liquid crystal material and a monomer, and then polymerizing the monomer with light. The solubility of the liquid crystal material in the polymer is less than in the monomer. As polymerization progresses, a portion of the liquid crystal material separates as a second phase in the polymer matrix. The liquid crystal can be any suitable such material that is soluble in the monomer and less so in the polymer, and the monomer is a polymerizable acrylate or methacrylate. Liquid crystal devices are prepared by forming the composite material between two electrically conducting substrates.
REFERENCES:
patent: 3620889 (1971-11-01), Baltzer
patent: 3935337 (1976-01-01), Taylor
patent: 4101207 (1978-06-01), Taylor
patent: 4671618 (1987-06-01), Wu
patent: 4673255 (1987-06-01), West et al.
patent: 4685771 (1987-08-01), West et al.
patent: 4688900 (1987-08-01), Doane et al.
patent: 4728547 (1988-03-01), Vaz et al.
patent: 4869847 (1989-09-01), Leslie et al.
patent: 4890902 (1990-01-01), Doane et al.
patent: 4891152 (1990-01-01), Miller et al.
Montgomery, G. P. et al., Appl. Optics, 26, 738, 1987.
Vaz, N. A. P. et al., Mol. Cryst. Liq. Cryst., 146, 1, 1987.
Frost, L., Pigm. Resin. Technol. 16(9), 9-12, 1987.
Grechko, L. G. et al., Ukr. Fiz. Zh. (Russ.) 32(8), 1213-1216, 1987.
West, J. L., Phase Separation of Liquid Crystals in Polymers, Mol. Cryst. Liq. Cryst., vol. 157, pp. 427-441, 1988.
Pappas, S. P. et al., in Ultraviolet Light Induced Reactions in Polymers, Chapter 2, American Chemical Society, 1976.
Miller Leroy J.
Yamagishi Frederick G.
Stoll Robert L.
Treanor Richard
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