Abstract: Provided is a holographic recording composition that comprises a monomer expressed by the Structural Formula (1) below: in the Structural Formula (1) shown above, X1 represents a hydrogen atom or a methyl group; Y1 represents an oxygen atom or NR10 (R10 represents a hydrogen atom or an alkyl group); L1 represents a divalent organic connecting group; n1 is an integer of 0 or 1; R1 to R9 may be identical or different each other and each represents a hydrogen atom, halogen atom, alkyl group, aryl group, heterocyclic group, alkoxy group, aryloxy group, alkoxycarbonyl group, aryloxycarbonyl group, carbamoyl group, sulfamoyl group, amino group, acyloxy group, acylamino group, hydroxyl group, carbonic acid group, sulfonic acid group, or a group expressed by the Structural Formula (1-1) below; R1 to R9 may be further substituted by a substituent; R1 and R2, R3 and R4, R4 and R5, R5 and R6, R6 and R7, or R8 and R9 may form a ring structure together with at least an adjacent carbon atom;

Abstract: The present invention provides a photopolymerizable composition, which is highly sensitive to visible light rays to IR rays and has an excellent raw storage property, and a recording material capable of carrying out highly sensitive image recording and having an excellent raw storage property and humidity dependency. Namely, the invention provides a photopolymerizable composition containing at least a polymerizable compound having an ethylenic unsaturated bond, a photoradical generating agent, and a thiol compound represented by the following general formula (I) and a recording material using the photopolymerizable composition: [R represents an alkyl or an aryl, either of which may have substituents; A represents an atom group forming a 5-member or 6-member heteroring having an N?C—N portion and carbon atoms and A may further have a substituent group.].

Abstract: The present invention provides a method for forming an azo colorant by reaction of a diazo compound and a coupler. The coupler has a leaving group at the coupling position thereof, such that a coupling reaction rate is faster than it would be if the coupler did not have the leaving group. The coupling reaction rate constant k is preferably 0.1 (s?1) or more.

Abstract: The present invention provides a photopolymerizable composition, which is highly sensitive to visible light rays to IR rays and has an excellent raw storage property, and a recording material capable of carrying out highly sensitive image recording and having an excellent raw storage property and humidity dependency.

Abstract: Disclosed are a pyrrolopyrimidineone compound represented by the following general formula (1) and a heat-sensitive recording material using the pyrrolopyrimidineone compound as a coupler: General formula (1) wherein R1 and R2 each independently represents a hydrogen atom, a halogen atom, an aryl group, an alkyl group, a cyano group, an acyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group, or an arylsulfonyl group; R3 represents an amino group, a substituted amino group, a hydroxyl group, an acyloxy group, an arylcarboxyl group, an alkoxy group, an aryloxy group, an alkylthio group, or an arylthio group; R4 represents a hydrogen atom, a halogen atom, or an electron attracting group whose Hammett substituent constant &sgr;p is 0.2 or more; and L represents a substituent group which can leave when the compound reacts with a diazonium salt.

Abstract: An object of the present invention is to provide a pyrrolo[1,2-a]pyrimidine compound that is useful as a coupler providing excellent hue of a cyan system and sufficient density of formed color. The pyrrolo[1,2-a]pyrimidine compound of the present invention for achieving the object is represented by one of following general formulae (1), (2) and (3).

Abstract: A heat-sensitive recording material is disclosed, which comprises a support having provided thereon a transparent heat-sensitive layer comprising color former-containing microcapsules and at least one color developer, wherein the color developer contains a compound represented by formula (I): ##STR1## wherein R represents a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, or a phenyl group; Ar represents a substituted or unsubstituted aryl group; and n is an integer of from 2 to 10.The heat-sensitive recording material provides a heat-sensitive layer having high sensitivity and good transparency.

Abstract: A novel phenylpyridine derivative which exhibits a positive dielectric anisotropy and is useful as a component of liquid crystal materials and also has a broad temperature range of liquid crystal phases, a high clearing point and a superior compatibility with other liquid crystal compounds or liquid crystal compositions, and a composition containing the derivative are provided. The phenylpyridine derivative is expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 10 carbon atoms, X represents H or F; Y represents F, --CN or an alkyl group or an alkoxy group of 1 to 10 carbon atoms; and m represents 0 or 1.

Abstract: Novel compounds which, when used as a components of liquid crystal compositions, have good compatibility with other components and also have large values of dielectric anisotropy and optical anisotropy, and liquid crystal compositions containing the same are provided, which compounds are 4'-cyano-3'-halogenophenyl 4-(5-substituted-pyrimidin-2-yl)benzoate expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 10 carbon atoms or --(CH.sub.2).sub.m --O--(CH.sub.2).sub.p --CH.sub.3 wherein m and p each represent an integer of 0 to 8 and m+p.ltoreq.8, and X represents a halogen atom.

Abstract: A novel pyridine derivative which, when added to liquid crystal substances, can improve various specific features required for the resulting liquid crystal compositions, and a liquid crystal composition containing the same are provided, which pyridine derivative is expressed by the formula ##STR1## wherein W represents H or F; X, F, Cl or alkyl or alkoxy of 1.about.10 C; ##STR2## n, 0 or 1; Y, CN or alkyl or alkoxy of 1.about.10 C; Z, F, Cl or H; and when Z is F or Cl, Y is limited to CN, excluding certain identified compounds.

Abstract: A novel pyrimidine derivative which, when used as a component of a liquid crystal composition, is useful for driving a liquid crystal cell containing the composition at low voltages, and a liquid crystal composition containing the same are provided, which pyrimidine derivative is expressed by the formula ##STR1## wherein n represents an integer of 0 or 1; R represents an alkyl or alkoxy group of 1 to 10 carbon atoms; and X.sub.1, X.sub.2 and X.sub.3 each represent hydrogen atom, F, Cl or Br as halogeno group, cyano group or trifluoromethyl group and at least one of X.sub.1, X.sub.2 and X.sub.3 is trifluoromethyl group.

Abstract: A compound which, when added as a component to other components, raises the N-I point of the resulting liquid crystal composition and nevertheless affords only a relatively small rise in viscosity of the composition, and a liquid crystal composition containing the same are provided, which compound is a 1-(trans-4'-alkylcyclohexyl)-2-4"-[trans-4"'-(trans-4""-alkylcyclohexyl)cy clohexylphenyl]ethane expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 each represent an alkyl group of 1 to 10 carbon atoms.

Abstract: A novel liquid crystal compound useful as a component of liquid crystal compositions and a liquid crystal composition containing the same are provided, which compound is a phenoxypropanol ester derivative expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 each represent an alkyl group or an alkoxy group each of 1 to 15 carbon atoms, F atom, Cl atom or CN group, but either one of R.sup.1 and R.sup.

Abstract: A novel liquid crystal compound which is superior in compatibility with other liquid crystal compounds or liquid crystal compositions, chemically stable, and when added to liquid crystal compositions, can raise the clearing point thereof almost without increasing the viscosity and enhance .DELTA..epsilon. and .DELTA.n thereof, and a liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein R represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; Y represents F, Cl or H; and Z represents F, Cl, cyano group or an alkyl group or an alkoxy group each of 1 to 10 carbon atoms.

Abstract: A novel organic compound usable as a component of liquid crystal compositions having a positive value of dielectric anisotropy and a liquid crystal composition usable as a material for liquid-crystalline display devices operated under a low driving voltage are provided which compound is a benzoic acid ester derivative expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 10 carbons and X represents ##STR2##

Abstract: A novel ester derivative affording a positive large dielectric anisotropy value (.DELTA..epsilon.) of liquid crystal compositions and also reducing the optical anisotropy value (.DELTA.n) thereof when the derivative is contained therein, and a liquid crystal composition containing the ester derivative are provided, which ester derivative is expressed by the formula ##STR1## wherein R represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms and X represents F or Cl.

Abstract: A novel compound usable as a component constituting liquid crystal materials having a positive dielectric anisotropy value and a liquid crystal composition containing the same are provided, which compound is an alcohol derivative expressed by the general formula ##STR1## wherein R.sup.1 represents a hydroxyalkyl group of 1 to 10 carbon atoms having hydroxyl group at the end or an intermediate position thereof; R.sup.2 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms or --C.tbd.N; and ##STR2## represents ##STR3## and when R.sup.2 represents --C.tbd.

Abstract: A novel pyridine derivative capable of increasing the dielectric anisotropy value (.DELTA..epsilon.) or optical anisotropy value (.DELTA.n) of liquid crystal compositions including the derivative and lowering the driving voltages of liquid crystal display elements using the composition, and also a liquid crystal composition containing the pyridine derivative are provided, which pyridine derivative is expressed by the formulaR--X--COO--Y--CH.sub.2 CH.sub.2 --Z--Awherein R represents an alkyl group or an alkoxy group each of 1-10 carbon atoms; X represents ##STR1## Y represents ##STR2## when Y is ##STR3## Z represents ##STR4## and A represents F, Cl or cyano group; and when Y is ##STR5## Z represents ##STR6## and A represents an alkyl group or an alkoxy group each of 1-10 carbon atoms.

Abstract: A novel 1,4-dipyrimidinylbenzene derivative which is useful as a component constituting a liquid crystal composition which is superior in properties and also physically and chemically stable, as a material for liquid crystal display elements, and a liquid crystal composition containing the same are provided, which derivative is expressed by the formula ##STR1## wherein X represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms, methylthio group or cyano group and Y represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms.

Abstract: Novel liquid crystal compounds having a large positive dielectric anisotropy value and also a low viscosity and a good stability to heat, light, air and water, and liquid crystal compositions containing the same are provided, which compounds are fluorobenzene derivatives expressed by the general formula ##STR1## wherein n represents 1 or 2, X represents CN or COCH.sub.3, and R represents hydrogen atom or an alkyl group or an alkoxy group each of 1 to 15 carbon atoms.