69260-38-4Relevant academic research and scientific papers
A biphenyl type acrylate liquid crystal resin synthesis method
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Paragraph 0028; 0031; 0040; 0044, (2019/02/02)
The invention discloses biphenyl acrylate liquid crystal resin and a synthetic method thereof. The synthetic method comprises the steps of synthesizing symmetrical and unsaturated liquid crystal resin through an acylation reaction and an esterification reaction by using unsaturated double bonds of acrylic acid; preparing di-ester and biphenyl liquid crystal resin by using the characteristics of 3,3',5,5'-tera-alkyl (or fluoro) biphenol, such as strong rigidity, large intermolecular attraction and conjugation effect of benzene rings. The biphenyl acrylate liquid crystal resin disclosed by the invention has the characteristics of the biphenyl liquid crystal resin, such as no color, generally relatively high clearing point, ultra-high dielectric anisotropy value, good physical and chemical properties, good optical and chemical stability, anisotropy, very wide liquid crystal phase region, adjustable viscosity, birefringence and physical parameters, good molding processing property and the like.
Synthesis, structure, and mesomorphism of novel liquid crystalline acrylate monomers and polymers
Xu, Xiao-Xu,Chao, Chun-Ying,Yao, Xi-Jing
, p. 1 - 10 (2016/02/19)
A series of novel liquid crystalline monomers (M1-M8) and side chain polymers base polyacrylate backbone were synthesized. The chemical structures were characterized by FT-IR and 1H-NMR spectra. The mesomorphism and thermal behavior was investigated by polarizing optical microscopy, differential scanning calorimetry, and thermogravimetric analysis. The relationships of structure and mesomorphism are discussed in detail. The eight monomers and their corresponding polymers all show enantiotropic nematic phase. With increasing the spacer length or flexibility of the terminal group, the melting temperature (Tm) and isotropic temperature (Ti) of the corresponding monomers and polymers all decreased. However, with increasing the rigidity of the mesogenic core, Tm and Ti of the corresponding monomers and polymers all increased. TGA showed that all the polymers obtained in this study had excellent thermal stability.
A novel soft matter composite material for energy-saving smart windows: From preparation to device application
Gao, Yanzi,Yao, Wenhuan,Sun, Jian,Zhang, Huimin,Wang, Zhendong,Wang, Ling,Yang, Dengke,Zhang, Lanying,Yang, Huai
supporting information, p. 10738 - 10746 (2015/05/27)
Nowadays, with the increasing energy consumption of buildings and the continuous improvement of human living standards, use of architectural glass with multi-functional features of large-scale manufacturing, safety and energy saving has become the mainstr
DIOXETANE COMPOUND, CATIONICALLY POLYMERIZABLE COMPOSITION, OPTICAL FILM AND LIQUID CRYSTAL DISPLAY UNIT
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Page/Page column 14-15, (2008/12/08)
The present invention provides a novel dioxetane compound having a cationically polymerizable oxetane group, which compound is excellent in compatibility with a liquid crystalline compound and a non-liquid crystalline compound. The present invention also provides an optical film with excellent liquid crystal orientation retention properties and mechanical strength, produced by aligning a composition of the dioxetane compound and a cationically polymerizable compound in a liquid crystal orientation and fixing the liquid crystal orientation by polymerization, and a liquid crystal display device with the optical film.
Facile synthesis of novel monodisperse liquid-crystalline oligomers based on Michael adducts from millipede cyanoacetates
Nakanishi, Sadahiro,Ueda, Mitsuru
, p. 452 - 453 (2008/02/02)
Facile synthesis of novel monodisperse liquid-crystalline (LC) oligomers was performed. The functionalization of the end group of 4 (and 6) millipede cyanoacetates with 8 (and 12) mesogenic units by Michael addition reaction produced a monodisperse LC oct
(Meth)acrylic compound having an oxetanyl group and liquid crystal film produced by using the same
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Page 8; 13-14, (2010/02/06)
The present invention provides a novel compound which is suitable as the starting material of a side-chain type liquid crystalline polymeric substance having a reactive group which is excellent in reactivity upon fixation of the liquid crystal orientation structure. The novel compound is a (meth)acrylic compound having an oxetanyl group represented by the formula wherein R1 is hydrogen or methyl, R2 is hydrogen, methyl, or ethyl, "-L1-M-L2-" represents a mesogen portion, and n and m are each an integer of 0 to 10. The present invention also provides a liquid crystal film containing the side-chain type liquid crystalline polymeric substance and a liquid crystal display mounted with such a liquid crystal film.
Process for the preparation of aromatic carboxylic acid
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Example 2, (2008/06/13)
A process for the preparation of an aromatic carboxylic acid comprises the steps of synthesizing a sulfonic ester having a (meth)acryloyloxy group by a reaction of a (meth)acrylic ester with a sulfonyl donor, synthesizing an aromatic aldehyde having a (meth)acryloyloxy group by a reaction of the sulfonic ester with an aromatic aldehyde and synthesizing an aromatic carboxylic acid by an oxidation of the aromatic aldehyde.
SYNTHESIS AND CHARACTERIZATION OF SOME THERMINALLY CYANO-SUBSTITUTED SIDE-CHAIN LIQUID CRYSTALLINE POLYACRYLATES
Lacoudre, Nelly,Borgne, Alain le,Spassky, Nicolas,Vairon, Jean-Pierre,Barny, Pierre le,et al.
, p. 113 - 128 (2007/10/02)
The synthesis of a series of liquid crystalline side-chain polyacrylates in which the mesogenic group is 1-(4-benzoyloxyphenyl)-2-(4'-cyanophenyl)ethane is reported.Methylenic spacer groups of different lengths have been used.Polymers were prepared by radical polymerization (AIBN as initiator) of the corresponding acrylates.The liquid crystalline nature of these polymers was established by calorimetric measurements, optical texture observations and X-ray investigations.For the polymer where n=6, the unusual I-N-SAd-Nre sequence was observed.
