摘要:
An object of the present invention is to provide a polymerizable liquid crystal composition incorporating a polymerizable liquid crystal compound which displays a low nematic phase temperature, displays excellent compatibility with other polymerizable liquid crystal compounds, and furthermore yields a product following polymerization, of good transparency and high mechanical strength. A polymerizable composition is provided which displays a liquid crystal phase, and moreover incorporates a liquid crystal backbone with two or more ring structures and a compound with a partial structure represented by the general formula P1—S1—A1—D1—E1— [wherein P1 represents a polymerizable functional group; S1 represents —(CH2)w—, —O(CH2)w—, —(CH2)wO—, —(CH2)wC(═O)O—, —(CH2)wOC(═O)—, —C(═O)O(CH2)w— or —OC(═O)(CH2)w— (w: 1 to 20); A1 and E1 each represent a hydrocarbon ring or a hetero ring, although E1 is a ring incorporated within the liquid crystal backbone; and D1 represents —C(═O)—O—(CH2)m—O—, —O(CH2)m—O—C(═O)—, —O—C(═O)—(CH2)m—O—, or —O(CH2)m—C(═O)—O— (m: 1 to 15)].
摘要:
An electrophotoconductor of high sensitivity and durability comprising a photosensitive layer containing an indoline compound of the general formula ##STR1## wherein A represents an aromatic hydrocarbon or aromatic heterocyclic group which may have a substituent, and R.sub.1 and R.sub.2, independently from each other, represent a hydrogen or halogen atom, or an alkyl, aralkyl or aryl group.
摘要:
An electrophotoconductor comprising an electrically conductive support and formed on the surface thereof a photosensitive layer containing a disazo compound of formula ##STR1## wherein two Y's, which are the same or different, denote a group selected from the class consisting of ##STR2## two X's, which are the same or different, denote an atom or a group selected from the class consisting of H, CH.sub.3, OCH.sub.3, Cl, Br and NO.sub.2, Ar denotes a group such as a phenyl group, a naphthyl group, an anthryl group, a pyridyl group, a thienyl group, a furyl group or a carbazolyl group which may have a substituent, R.sub.1 and R.sub.2, which are the same or different, denote an alkyl group or an aryl group that may have a substituent, and ##STR3## denotes a cylic hydrocarbon group or a heterocyclic group which may have a substituent.
摘要:
A novel compound represented by the general formula (I), and a nematic liquid crystal composition incorporating the same. A compound represented by the general formula (I) can be produced industrially extremely easily, as shown in the examples, displays superior compatibility with current general purpose host liquid crystals as a nematic phase, and also shows little crystal precipitation at low temperatures. Moreover, by addition of a small amount of such a compound to a host liquid crystal, the liquid crystal temperature range at low temperatures can be effectively widened without any significant worsening of the various characteristics of the liquid crystal material. Consequently, a compound of the present invention is an extremely useful liquid crystal material which is suitable for various liquid crystal display elements which require a broad operating temperature range.