Abstract: A composition which is useful for production of a light emitting device excellent in light emission efficiency is provided. In particular, provided is a composition containing a compound represented by formula (1) and a phosphorescent compound, wherein R1 and R2 each independently represent a substituent, n1 represents an integer of 1 to 14, and Ar1 represents an arylene group or a divalent heterocyclic group, and at least one of one or more groups Ar1 is a group represented by the formula (1-A), wherein the variable groups R1A to R8A, R91A, and R92A are as defined in the specification.

Abstract: A composition which is useful for production of a light emitting device excellent in light emission efficiency is provided. In particular, provided is a composition containing a compound represented by formula (1) and a phosphorescent compound, wherein R1 and R2 each independently represent a substituent, n1 represents an integer of 1 to 14, and Ar1 represents an arylene group or a divalent heterocyclic group, and at least one of one or more groups Ar1 is a group represented by the formula (1-A), wherein the variable groups R1A to R8A, R91A, and R92A are as defined in the specification.

Abstract: A polymer compound is provided having a constitutional unit represented by the following formula (1): wherein: R1 and R2 represent an alkyl group, an aryl group, a mono-valent aromatic heterocyclic group, an alkoxy group or an aryloxy group, and Ar1 represents an arylene group or a di-valent condensed polycyclic aromatic heterocyclic group.

Abstract: The present invention relates to a pyridazinone compound of the formula (I): wherein R1 represents hydrogen, a C1-6 alkyl group, and the like, R2 represents halogen, a cyano group, a nitro group, a C1-6 alkoxy group, and the like, G represents hydrogen, and the like, Z represents halogen, a cyano group, a nitro group, a C1-6 alkyl group, and the like, and n represents an integer of 1-5 useful as an active ingredient in a herbicide and a noxious arthropod controlling agent.

Abstract: A polymer compound is provided having a constitutional unit represented by the following formula (1): wherein: R1 and R2 represent an alkyl group, an aryl group, a mono-valent aromatic heterocyclic group, an alkoxy group or an aryloxy group, and Ar1 represents an arylene group or a di-valent condensed polycyclic aromatic heterocyclic group.

Abstract: The present invention relates to a pyridazinone compound of the formula (I): wherein R1 represents hydrogen, a C1-6 alkyl group, and the like, R2 represents halogen, a cyano group, a nitro group, a C1-6 alkoxy group, and the like, G represents hydrogen, and the like, Z represents halogen, a cyano group, a nitro group, a C1-6 alkyl group, and the like, and n represents an integer of 1-5 useful as an active ingredient in a herbicideand a noxious arthropod controlling agent.

Abstract: The present invention provides a pyrimidine derivative represented by the formula: 1

Abstract: The present invention provides a bicyclic triazolone derivative represented by the formula:

Abstract: A compound of the general formula ##STR1## wherein R.sub.1 is a phenyl group which may be substituted, R.sub.2 and R.sub.3 respectively are a lower alkyl or lower alkoxy group, Z is CH or N and n is 0 or 1, or a salt thereof which is useful as a herbicide.

Abstract: Novel compounds of the formula: ##STR1## wherein R.sub.1 is a pyrazolyl group which may be substituted; R.sub.2 and R.sub.3 respectively are a lower alkyl group or a lower alkoxy group; and Z is CH or N, which are useful as herbicides.

Abstract: New miticidal compounds of the formula ##SPC1##Wherein R represents lower alkyl or lower alkenyl, R.sup.1 and R.sup. 2 respectively represent lower alkyl and X represents oxygen or sulfur.