摘要:
The invention relates to novel acid dyes of formula (I)
wherein R 1 signifies H or a sulpho group R 2 signifies H or a sulpho group, R 1 has to be different from R 2 , R 3 signifies H, a sulpho group, a substituted C 1 to C 4 alkyl group or an unsubstituted C 1 to C 4 alkyl group, a substituted C 1 to C 4 alkoxy group or an unsubstituted C 1 to C 4 alkoxy group, R 4 signifies H, a substituted C 1 to C 4 alkyl group or an unsubstituted C 1 to C 4 alkyl group, a substituted C 1 to C 4 alkoxy group or an unsubstituted C 1 to C 4 alkoxy group, R 6 signifies a substituted C 1 to C 9 alkyl group or an unsubstituted C 1 to C 9 alkyl group, an unsubstituted aryl group or a substituted aryl group. The novel acid dyes can be used for dyeing and printing polyamides.
摘要:
The invention relates to novel acid dyes of formula (I)
wherein R 0 signifies a substituted or unsubstituted C 1 to C 4 alkyl, R 1 signifies H, C 1 to C 4 alkyl, sulpho, C 1 to C 4 alkylene-sulpho, -CO-NH 2 , -CO-NH-(C 1 to C 4 alkyl) or CN, R 2 signifies H, C 1 to C 4 alkyl, R 3 signifies H, sulpho, C 1 to C 4 alkyl group, C 1 to C 4 alkoxy, R 4 signifies H, C 1 to C 4 alkyl, C 1 to C 4 alkoxy, R 6 signifies a substituted C 1 to C 9 alkyl group or an unsubstituted C 1 to C 9 alkyl group, an unsubstituted aryl group or a substituted aryl group,
wherein the compound of formula (I) bears at least one anionic substituent. The novel acid dyes can be used for dyeing and printing polyamides.
摘要:
An electrophotographic photosensitive member is formed of a support, and a photosensitive layer disposed on the support. The photosensitive layer is characterized by containing an azo pigment having an organic group represented by formula (1) below: wherein X 1 , Z 1 , k 1 , B, A, R 1 and R 2 are defined in the text. The group of the formula (1) may provide at least one of up to 4 azo-substituents of the azo pigment having an entire structure represented by
Ar(̵N=N-Cp) 1-4 ,
wherein Ar denotes an aromatic or heterocyclic core unit, Cp denotes a coupler residue group, and -(N=N-Cp) denotes such an azo-substituent. The photosensitive member can exhibit good electrophotographic performances including high and stable sensitivity on repetitive use.
摘要:
An electrophotographic recording material comprising a conductive support and a photosensitive layer containing a photoconductive compound that has p-type charge generating capacity and is a trisazo compound which is the reaction product of the coupling reaction between a coupler compound that does not contain a carboxylic acid or sulphonic acid group and a diazonium salt represented by the following general formula (I) : wherein : each of L, M and Y (same or different) represents a phenylene group including a phenylene groups substituted with one or more substituents selected from the group consisting of lower alkyl (C₁-C₂), nitro, methoxy, ethoxy or halogen, or represents said phenylene group fused-on with the necessary atoms to close a saturated or unsaturated carbocyclic or heterocyclic ring or ring system including said ring or ring-system in substituted form, and X⁻ is an anion.
wherein A is the residual structure of an aromatic amine, p is an integer 1, 2, 3, 4, etc. depending on the amine structure, m is an integer 0, 1, 2, 3, or 4 and X may be selected from the group including but not limited to F, Cl, Br, NO₂, CN, OH, NH₂, OCH₃, OCH₂CH₃, CF₃, alkyl and aromatic groups.
摘要:
An novel electrophotographic photoreceptor is provided comprising on an electrically conductive support a layer containing a charge-transporting compound and a charge-generating compound or a charge-transporting compound-containing layer and a charge-generating compound-containing layer, wherein said charge-generating compound is a trisazo compound represented by the general formula (1): wherein Ar¹, Ar², Ar³, Ar⁴, Ar⁵ and Ar⁶ each represents an arylene group, divalent condensed polycyclic aromatic group or divalent group derived from a monocyclic or condensed polycyclic heterocyclic aromatic group, each of which may have one or more substituents; C p represents a coupler residual group; and n represents 1 or 2.