Abstract: The present disclosure relates to compounds of Formula (I) and (II): as compounds capable of emitting delayed fluorescence, and uses of the compounds in organic light-emitting diodes.

Abstract: An organic light emitting element produced by using a light emitting composition that contains both a first compound having a PBHT value more than 0.730 and a second compound having ES1 lower than that of the first compound and AEsT less than 0.20 eV is excellent in durability. ES1 is the lowest excited singlet energy level, AEsT is the difference between the lowest excited singlet energy level and the lowest excited triplet energy level.

Abstract: To improve the emission efficiency, the driving voltage and the lifetime of an organic light-emitting device using a delayed fluorescent material. A host material for a delayed fluorescent material, containing a compound represented by the following general formula: R1 to R5 each are a substituent not containing a cyano group. n1 to n5 each are 0 to 4, Ar is a monocyclic arylene group or a monocyclic heteroarylene group.

Abstract: The compound represented by the following formula is useful as a light-emitting material. One of R1 to R5 is CN; another is Het-LA-*; other two or three are each a carbazolyl group, etc.; and the rest are others. Het is a heteroaryl group; and LA is a single bond or an arylene group.

Abstract: The present disclosure relates to compounds capable of emitting delayed fluorescence, and uses of the compounds in organic light-emitting diodes.

Abstract: A compound of the following structure has excellent luminescence characteristics. One of X1 and X2 is N and the other is B, and R1 to R26, A1, and A2 are H or substituents.

Abstract: The present disclosure relates to compounds of Formula (I) as useful materials for OLED's. X is O or S; Y1 to Y4 are N or R—C; at least one of R and R5 to R8 is CN or heteroaryl; and at least other one of R and R5 to R8 is diarylamino.

Abstract: The present disclosure relates to compounds of Formula I) as useful materials for OLED's. X1, X2 and X3 are N or C(R5); Ar1 and Ar2 are aryl, heteroaryl or cyano; L1 is single bond, arylene or heteroarylene; and R1, R2, R3 and R4 are diarylamino, carbazolyl, heteroaryl, H or alkyl.

Abstract: The present disclosure relates to compounds of Formula (I) as useful materials for OLED's. X is O or S; Y1 to Y4 are N or R—C; at least one of R and R5 to R8 is CN or heteroaryl; and at least other one of R and R5 to R8 is diarylamino.

Abstract: The present disclosure relates to compounds of Formula (I) and (II): as compounds capable of emitting delayed fluorescence, and uses of the compounds in organic light-emitting diodes.

Abstract: The present disclosure relates to compounds capable of emitting delayed fluorescence, and uses of the compounds in organic light-emitting diodes.

Abstract: A yarn for air bags including polyamide multifilament with a total fineness of 200 to 700 dtex, a single fiber fineness of 1 to 2 dtex, strength of 7 to 10 cN/dtex, and elongation of 20 to 30%.

Abstract: An air bag fabric includes a warp and a weft, each including polyamide multifilaments with a total fineness of 200 to 700 dtex and a single fiber fineness of 1 to 2 dtex and having a cover factor (CF) of 1,800 to 2,300, wherein a ratio ECw/Mtw between edgecomb resistance, EDw, and single fiber fineness, Mtw, in the warp direction, and a ratio ECf/Mtf between edgecomb resistance, ECf, and single fiber fineness, Mtf, in the weft direction are both in a range of 250 to 1,000 N/dtex.

Abstract: An air bag fabric includes a warp and a weft, each including polyamide multifilaments with a total fineness of 200 to 700 dtex and a single fiber fineness of 1 to 2 dtex and having a cover factor (CF) of 1,800 to 2,300, wherein a ratio ECw/Mtw between edgecomb resistance, EDw, and single fiber fineness, Mtw, in the warp direction, and a ratio ECf/Mtf between edgecomb resistance, ECf, and single fiber fineness, Mtf, in the weft direction are both in a range of 250 to 1,000 N/dtex.

Abstract: A polyphenylene sulfide fiber has a large single-filament fineness, does not require special production equipment and serves as industrial material for uses where high rigidity is needed. A low-cost process produces the polyphenylene sulfide fiber with high spinnability. A polyphenylene sulfide fiber has a single-filament fineness of 10 to 50 dtex and a tenacity of 4.5 to 6 cN/dtex and the method attaches an aqueous lubricant to the surface up to 0.1 to 1 wt % and subsequently attaches a anhydrous lubricant to the surface so that the total weight of the surface-attached oil will accounts for 0.5 to 2 wt %.

Abstract: A hollow stabilizer manufactured from a material obtained by adding a minute amount (0.001-0.01% by weight) of boron to either a carbon steel tubing having a relatively low carbon concentration of 0.20-0.35% for mechanical and structural purposes or to a carbon steel tubing for general structural purposes. The carbon steel tubing thus provided is bent in a prescribed stabilizer form. The bent tubing is water quenched, for example, to a greater hardness than HRC 43. The water-hardened bent tubing is later tempered to a hardness HRC, ranging between 36 and 43, at a temperature of, for example, 300.degree.-380.degree. C. for a proper length of time. The hollow stabilizer obtained by the aforementioned heat-treating steps has a much greater fatigue strength.