Abstract: A cyclic olefin-based polymer containing a repeating unit represented by formula (1), an optical material containing the cyclic olefin-based polymer, a polarizing plate containing the optical material, and a liquid crystal display device containing the polarizing plate: in which R1 represents a substituent; L represents a single bond or a divalent linking group, and forms an alcohol together with the —OH group; p represents an integer of 0 or 1; q represents an integer of from 0 to 3; r represents an integer of from 1 to 4; and R1 and L may be combined with each other to form a 5- to 7-membered ring.

Abstract: A cyclic olefin polymer is provided and includes a repeating unit represented by formula (1A) and a repeating unit represented by the formula (1B): R1 and R3 each independently represents a substituent, L1 and L2 each independently represents a single bond or a divalent linking group, m and p each independently represents an integer of 0 or 1, and n and q each independently represents an integer of 1 to 4; and A represents COOR2 or OCOR2, and R2 represents a linear alkyl group having a carbon number of 1 to 10. The cyclic olefin polymer has a copolymerization ratio of x and y satisfying 0.03?y/(x+y)?0.50, a number average molecular weight of from 70,000 to 300,000, and a weight average molecular weight of from 200,000 to 700,000.

Abstract: A norbornene-based polymer, which is formed by addition polymerization of a composition comprising at least one norbornene derivative represented by formula (1): wherein R1, R2, R3, R4, R5, R6, R7 and R8 each independently represents a hydrogen atom or a substituent; and n represents an integer of 0 to 2.

Abstract: A norbornene-based polymer, which is formed by addition polymerization of a composition comprising at least one norbornene derivative represented by formula (1): wherein R1, R2, R3, R4, R5, R6, R7 and R8 each independently represents a hydrogen atom or a substituent; and n represents an integer of 0 to 2.

Abstract: A film comprising norbornene-based polymer has a repeating unit represented by the following formula (1): wherein L represents a single bond or an alkylene group having 1 to 10 carbon atoms, R represents alkyl group having 2 to 10 carbon atoms, R1, R2 and R3 each represent a hydrogen atom or a substituent group.

Abstract: A norbornene-based polymer contains at least one kind of a repeating unit represented by the following formula (I): wherein R1 and R2 each represent a hydrogen atom, an alkyl group which may possess a substituent group or an aryl group which may possess a substituent group, L and L? each represent a bivalent linking group or a single bond, and A and A? each represent an aromatic group.

Abstract: An organic electroluminescent device comprising a pair of electrodes and a light emitting layer, a hole transport layer containing a hole transporting material, and an electron transport layer provided between the pair of electrodes wherein, the light emitting layer contains at least two host materials and at least one red phosphorescent material, and the hole transporting material in the hole transport layer has a small ionization potential than the two host materials in the light emitting layer.

Abstract: A cellulose acylate solution containing a cellulose acylate which satisfies 2.5?A+B?3, 0?A?2.5, 0.3?B?3 (wherein A is the substitution degree of an acetyl group, and B is the sum of the substitution degrees of an acyl group having 3 to 7 carbon atoms) and whose content of sulfur atoms of residual sulfate moiety S is such that 50 ppm<S<500 ppm. When solution casting is carried out using this solution, a cellulose acylate film having good surface state and low peel-off load can be produced.

Abstract: An optical cellulose acylate film satisfying (1)-(3) below, and showing a reduction of only 30% or less in both of its number-average and weight-average molecular weights when heated for 20 minutes at a temperature 10° C. higher than its melting point in an inert gas atmosphere: (1): 2.4?A+B<3.0 (2): 0?A?1.5 (3): 0.9<B<3 wherein A represents the substitution degree of acetyl groups in cellulose acylate, and B represents the total substitution degree of acyl groups having 3 to 7 carbon atoms in cellulose acylate.

Abstract: A bicyclic conjugated diene polymer obtained by polymerizing a monomer (M) comprising at least one kind of bicyclic conjugated diene monomer represented by formula (I), and a bicyclic conjugated diene copolymer obtained by copolymerizing monomer (M) with at least one kind of unsaturated compound other than said monomer: wherein, R1 to R6 are the same or different and are each hydrogen, halogen, or alkyl or halogenated alkyl of 1 to 20 carbon; n and m are each an integer of from 0 to 10; X1, X2, Y1 and Y2 are the same or different from each other and are each hydrogen, halogen or alkyl or halogenated alkyl of 1 to 20 carbon; and, when m or n is 2 or more, each of mX1's, mX2's, nY1's and nY2's are the same or different.

Abstract: An organic electroluminescent device comprising: a pair of electrodes; and at least one organic layer between the pair of electrodes, the at least one organic layer between the pair of electrodes, the at least one organic layer including a luminescent layer, wherein the luminescent layer contains at least one electron injection/transport compound, at least one hole injection/transport compound, and at least one green or blue phosphorescent compound; and the electron injection/transport compound and the hole injection/transport compound each has a minimum triplet exciton energy value which is equal to or more than that of the green or blue phosphorescent compound.

Abstract: A bicyclic conjugated diene polymer obtained by polymerizing a monomer (M) comprising at least one kind of bicyclic conjugated diene monomer represented by formula (I), and a bicyclic conjugated diene copolymer obtained by copolymerizing monomer (M) with at least one kind of unsaturated compound other than said monomer: wherein, R1 to R6 are the same or different and are each hydrogen, halogen, or alkyl or halogenated alkyl of 1 to 20 carbon; n and m are each an integer of from 0 to 10; X1, X2, Y1 and Y2 are the same or different from each other and are each hydrogen, halogen or alkyl or halogenated alkyl of 1 to 20 carbon; and, when m or n is 2 or more, each of mX1's, mX2's, nY1's and nY2's are the same or different.

Abstract: A method of preparing a cellulose acylate of a specific substitution degree, which includes: adding at least one selected from the group consisting of water and a carboxylic acid having 2 to 7 carbon atoms, as an activating agent, to a cellulose; and applying at least one treatment selected from (a) maintaining the cellulose at a temperature of 40° C. or more, for one hour or more, (b) irradiating microwaves to the cellulose, and (c) placing the cellulose under a pressure in the range of from 1.5 atm (0.15 MPa) to 100 atm (10.13 MPa); a cellulose acylate film prepared by means of a solution-casting film formation method or melt-casting film formation method, using the cellulose acylate which is prepared by the preparation method; and a polarizing plate and a liquid crystal display device, each of which contains the cellulose acylate film.

Abstract: An organic electroluminescence element, which contains at least one organic layer that includes a luminescent layer between a pair of electrodes, wherein the organic layer contains at least one compound represented by formula (1): wherein R11 and R12 each independently represent an aryl or heteroaryl group; when R11 or R12 is a phenyl group, it has no nitrogen-containing heterocyclic group on R11 or R12 as a substituent; Ar11 and Ar12 each independently represent a group represented by formula (2): wherein Ar21 represents an arylene or heteroarylene group; R21, R22, R23, and R24 each independently represent a substituent or a hydrogen atom; L2 represents a substituted or unsubstituted o-arylene or vinylene group, —NR— (R represents a substituent), —O—, or —S—; and m is 0 or 1.

Abstract: Adipic acid diester is caused to react with alkoxide M(OR)n, wherein R is an alkyl group and M is an alkali metal or alkaline earth metal, the reaction product is successively subjected either to coupling with halomethylstyrene followed by carbonylation, or to coupling with 2-(halomethylphenyl)propionic acid or its ester followed by decarboxylation and hydrolysis. With this process, it is possible to produce more efficiently a specific 2-substituted propionic acid, loxoprofen.

Abstract: Adipic acid diester is caused to react with alkoxide M(OR)n, wherein R is an alkyl group and M is an alkali metal or alkaline earth metal, the reaction product is successively subjected either to coupling with halomethylstyrene followed by carbonylation, or to coupling with 2-(halomethylphenyl)propionic acid or its ester followed by decarboxylation and hydrolysis. With this process, it is possible to produce more efficiently a specific 2-substituted propionic acid, loxoprofen.