Acetylene polymers and their use as liquid crystals

Details Acetylene polymers and their use as liquid crystals Acetylene polymers and their use as liquid crystals

2006-07-04

2006-07-04

Wu, Shean C (Department: 1756)

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

C252S299640, C252S299670, C560S061000, C560S064000, C560S077000, C526S285000

Reexamination Certificate

active

07070712

ABSTRACT:
There is disclosed a liquid crystalline polyacetylene having a repeat structure of the formulawhere spa is a spacer group and mes is a mesogenic substituent.

REFERENCES:
patent: 5475133 (1995-12-01), Douglas et al.
CAPLUS 1999:129341, “Synthesis, Mesomorphism, Isomerization, and Aromatization of Stereoregular Poly{[4-({[6-({[4′-)heptyl)oxy-4-biphenylyl]carbonyl}oxy)-hexyl]oxy}carbonyl)phenyl]acetylene}”.
Vicentini et al., “Coupling order and conductivity Liquid crystalline conjugated polymers,” Liquid Crystals, vol. 16, No. 5, pp. 721-733, 1994.
Kong, Xiangxing, et al., “Synthesis of Polyphenylacetylene Derivatives with Cyano Group,” Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 1 page.
Kong, Xiangxing, et al., “Synthesis of Poly(phenylacetylenes) Containing Polar Cyano Groups,” Department of Chemistry, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, Department of Chemistry, Peking University, Beijing 100871, China, 2 pages.
Kong et al., “Influence of Backbone Rigidity on The Thermotropic Behavior of Side-Chain Liquid Crystal Polyacetylenes,” Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, Department of Polymer Science, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, 2 pages.
Kong et al., “Liquid Crystalline Polyacetylenes with Phenylbenzoate Mesogens,” Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, Department of Polymer Science, College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, 2 pages.
Lam, Wing Yip, et al., “Synthesis of liquid crystalline polyacetylenes,” Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 1 page.
Lam, Wing Yip, et al., “Synthesis and Properties of Liquid-Crystalline Polyacetylene,” Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 2 pages.
Kong, Xiangxing, et al., “Synthesis, Mesomorphism, Isomerization, and Aromatization of Stereoregular Poly{[4-({[6-({[4′-(heptyl)oxy-4-biphenylyl]carbonyl}oxy)-hexyl]oxy}carbonyl)phenyl]acetylene},” Macromolecules, vol. 32, No. 6, pp. 1722-1730, 1999.
CAPLUS 1997:488994, “Synthesis of poly(phenylacetylenes) containing polar cyano group.”
RN 194670-09-2 Registry, 1997; RN 194670-08-1 Registry, 1997.

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