Idemitsu Kosan Company, Limited

Fumio Moriwaki

Satoshi Hachiya

Hiroyuki Endo

Kazuharu Morita

Toshihiro Iwakuma

Tetsuya Inoue

Hidehiro Matsunami

A process for producing an aromatic compound which can effectively decrease the contents of halogen elements in the aromatic compound and an aromatic compound which is produced in accordance with the process and useful as the material for obtaining an organic electroluminescence device having a long life are provided. The process for producing an aromatic compound comprises bringing an aromatic compound which is produced via an intermediate compound having halogen elements and has contents of halogen elements of 10 to 1,000 ppm by mass into reaction with a dehalogenating agent to decrease the contents of halogen elements to 10 ppm by mass or smaller, and an aromatic compound which is produced in accordance with the process.

Method for producing aromatic compound and aromatic compound

A method for producing aromatic amino compound (V): by synthesizing intermediate compound (IV): by the reaction of compound (I): HN&#x2014;Rwith a mixture of halogenated aryl compounds (II): Ar&#x2014;X and (III): Ar&#x2014;X in the presence of a noble metal catalyst, followed by eliminating the substituent Rfrom the nitrogen atom in compound (IV) under an acidic condition or an alkaline condition or by addition of a reducing agent or an oxidizing agent. (R: a substituent having 2 to 50 carbon atoms; Arand Ar: a substituted or unsubstituted hydrocarbon group or heterocyclic group having 6 to 50 carbon atoms and the same with or different from each other; and X: a halogen group). The aromatic amino compound useful as the charge transporting material can be produced efficiently at a great yield without using highly toxic raw materials.

Method for producing aromatic amino compound

A liquid crystal display device, which containing a liquid crystal in each display element comprising at least two oriented liquid crystal phases including a most-quickly-responding liquid crystal phase and a most-slowly-responding liquid crystal phase, the response time of the most-quickly-responding liquid crystal phase being at most 1/50 times as long as that of the most-slowly-responding liquid crystal phase, all layer normal lines and/or alignment directions of the liquid crystal phases being directed substantially in one direction.

Liquid crystal display device, methods of producing and driving the

A high polymer comprising a recurring unit represented by the formula: ##STR1## wherein r and p each represent an integer of 2 to 5, q represents a number of 4 to 20, m represents an integer of 8 to 12, a represents an integer of 1 to 8, and * represents an asymmetric carbon, and a ferroelectric liquid crystal composition comprising the high polymer and a low molecular weight smectic liquid crystal are disclosed.

High polymer and ferroelectric liquid crystal composition utilizing same

A liquid-crystalline copolymer comprising the repeating units represented by the following general formulas ##STR1## wherein each of r and p is an integer of 2 to 5, q is an integer of 0 to 3, m is an integer of 1 to 20, and R.sup.1 is ##STR2## R.sup.2 being --COOR.sup.3, --OR.sup.3 or --OCOR.sup.3, R.sup.3 being ##STR3## each of R.sup.4 and R.sup.5 being --CH.sub.3 or a halogen atom, each of a and d being an integer of 0 to 10, b being an integer of 0 or 1, with the proviso that d is not 0 when R.sup.5 is --CH.sub.3, the repeating units [I] and [II] being present in the liquid-crystalline copolymer in a substantial molar ratio [I]:[II] of 1:1, exhibits ferroelectricity even at a temperature neighboring room temperature and having a high response speed to changes of external electric fields.

Liquid-crystalline copolymer, process for the preparation of the same,

A liquid-crystalline copolymer comprising the repeating units represented by the following general formulas ##STR1## wherein each of r and p is an integer of 2 to 5, q is an integer of 0 to 3, m is an integer of 1 to 20, and R.sup.1 is ##STR2## R.sup.2 being --COOR.sup.3, --OR.sup.3 or --OCOR.sup.3 R.sup.3, ##STR3## each of R.sup.4 and R.sup.5 being --CH.sub.3 or a halogen atom, each of a and d being an integer of 0 to 10, b being an integer of 0 or 1, with the proviso that d is not 0 when R.sup.5 is --CH.sub.3, the repeating units [I] and [II] being present in the liquid-crystalline copolymer in a substantial molar ratio [I]:[II] of 1:1, exhibits ferroelectricity even at a temperature neighboring room temperature and having a high response speed to changes of external electric fields.

This invention provides a high polymer having the following repeating unit (I), a diene compound which is represented by the following formula (II) and is a raw material of the high polymer: ##STR1## and a ferroelectric liquid-crystalline composition containing the high polymer and a low molecular weight smectic liquid-crystalline compound. The ferroelectric liquid-crystalline composition is easy to orient and exhibits a fast response against applied electric field.

High polymer, ferroelectric liquid-crystalline composition containing

A high polymer comprising a recurring unit (I) represented by the formula: ##STR1## and a recurring unit (II) represented by the formula: ##STR2## wherein r, u, p and s each represent an integer of 2 to 5, q represents a number of 0 to 20, m represents an integer of 8 to 12, n represents an integer of 6 to 15, a represents an integer of 1 to 8, b represents an integer of 5 to 15, Y represents --0-- or --COO--, Z represents --O-- or a single bond, and * represents an asymmetric carbon, and a ferroelectric liquid crystal composition comprising the high polymer and a low molecular weight smectic liquid crystal are disclosed.

A high polymer comprising a recurring unit (I) represented by the formula: ##STR1## and a recurring unit (II) represented by the formula: ##STR2## wherein r, u, p and s each represent an integer of 2 to 5, q represents a number of 0 to 20, m represents an integer of 8 to 12, n represents an integer of 6 to 15, a represents an integer of 1 to 8, b represents an integer of 5 to 15, Y represents --O-- or --COO--, Z represents --O-- or a single bond, and * represents an asymmetric carbon, and a ferroelectric liquid crystal composition comprising the high polymer and a low molecular weight smectic liquid crystal are disclosed.

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Sodegaura, Japan

Fumio Moriwaki