Composition used in charge transport layer of organic photo conductor
AssigneeTUBE SMITH Technology CO.,LTD.
InventorsFu-Shing Wang, Ming-Feng Hsu
Life of this patent
Estimating the term…
Abstract
A composition for use in a charge transport layer of an organic photo conductor is provided. The composition includes: (a) a mixture of N,N′-Bis(3-methylphenyl)-N,N′-diphenyl-benzidine (Compound I), 4-((N,N-diphenylamino)-4′-(N-(3-methylphenyl)-N-phenylamino)-biphenyl (Compound II) and N,N,N′,N′-tetraphenylbenzidine (Compound III); and (b) Compound IV of the formula (IV): where, R1 and R2 independently denote C1-C4-alkyl group or C1-C4-alkoxy group, and wherein the weight ratio of Compound IV to combined Compound I, Compound II and Compound III is in a range from 1/5 to 5.
Claims19
A mixture of triphenylamine dimer derivatives for use in a charge transport layer of an organic photo conductor, comprising:
- Compound I of the formula (I),
- N,N′-Bis(3-methylphenyl)-N,N′-diphenyl-benzidine
- Compound II of the formula (II),
- 4-((N,N-diphenylamino)-4′-(N-(3-methylphenyl)-N-phenylamino)-biphenyl
- and
- Compound III of the formula (III),
- N,N,N′,N′-Tetraphenylbenzidine
A composition for use in a charge transport layer of an organic photo conductor, comprising:
- (a) a mixture of N,N′-Bis(3-methylphenyl)-N,N′-diphenyl-benzidine (Compound I), 4-((N,N-diphenylamino)-4′-(N-(3-methylphenyl)-N-phenylamino)-biphenyl (Compound II) and N,N,N′,N′-tetraphenylbenzidine (Compound III);
- and
- (b) Compound IV of the formula (IV):
- where,
- R1 and R2 independently denote C1-C4-alkyl group or C1-C4-alkoxy group, and
- wherein the weight ratio of Compound IV to combined Compound I, Compound II and Compound III is in a range from 1/5 to 5.
A charge transport layer of an organic photo conductor, comprising:
- (a) a mixture of 0.1 to 95 wt % of N,N′-Bis(3-methylphenyl)-N,N′-diphenyl-benzidine (Compound I), 0.1 to 95 wt % of 4-((N,N-diphenylamino)-4′-(N-(3-methylphenyl)-N-phenylamino)-biphenyl (Compound II) and 0.1 to 95 wt % of N,N,N′,N′-tetraphenylbenzidine (Compound III), based on the total weight of Compound I, Compound II and Compound III;
- and
- (b) Compound IV of the formula (IV):
- where,
- R1 and R2 independently denote C1-C4-alkyl group or C1-C4-alkoxy group, and
- wherein the weight ratio of Compound IV to combined Compound I, Compound II and Compound III is in a range from 1/5 to 5.
Dependencies are inferred from the claim text.