摘要:
The present invention relates to an electrophotographic photosensitive member. The photosensitive member has an electroconductive support and a photosensitive layer formed thereon containing oxytitanium phthalocyanine, and a surface layer of the photosensitive member contains a copolymer having a first and second structural units represented by the formulas ##STR1## Further the invention relates to an electrophotographic apparatus, device unit, and facsimile machine utilizing the electrophotographic photosensitive member.
摘要:
An electrophotographic photosensitive member is constituted by an electroconductive support and a photosensitive layer disposed on the electroconductive support. The photosensitive layer contains a specific disazo pigment having a 2,2'-bis-1,3-benzdithiolene-diyl skeleton or a thiophene-diyl skeleton. The photosensitive member is effective for providing a process cartridge and an electrophotographic apparatus respectively including the photosensitive member with an excellent photosensitivity and a stable electric potential in repetitive use.
摘要:
Disclosed is an alicyclic diepoxy compound which gives a cured article suffering from no deterioration in properties even when used in hot and humid surroundings or used under such conditions as to give a strong acid, which is highly reactive upon curing, and which gives a cured article superior typically in thermal stability. Specifically, the alicyclic diepoxy compound includes a 3,4,3′,4′-diepoxybicyclohexyl compound represented by following Formula (1): wherein R1 to R18 each represent a hydrogen atom, a halogen atom, a hydrocarbon group which may have an oxygen atom or a halogen atom, or a substituted or unsubstituted alkoxy group, in which the alicyclic diepoxy compound contains isomers of the 3,4,3′,4′-diepoxybicyclohexyl compound in a content of less than 20% based on the total of the 3,4,3′,4′-diepoxybicyclohexyl compound and the isomers thereof in terms of peak area ratio as determined by gas chromatography.
摘要:
An ink contains at least a pigment, wherein the pigment is a solid solution of C.I. Pigment Red 202 and C.I. Pigment Violet 19, and a primary particle diameter D (nm) of the pigment and a 50%-cumulative diameter D50 (nm) in particle diameter distribution of the pigment satisfy a relation of D×0.95≦(=
摘要:
An ink contains at least a pigment, wherein the pigment is C.I. Pigment Red 282, and a primary particle diameter D (nm) of the pigment and a 50%-cumulative diameter D50 (nm) in particle diameter distribution of the pigment satisfy a relation of D×0.95≦D50≦150, and a 90%-cumulative diameter D90 (nm) in particle diameter distribution of the pigment and the 50%-cumulative diameter D50 (nm) satisfy a relation of 1.5≦D90/D50≦2.5.
摘要:
A liquid thermosetting epoxy resin composition contains a base resin in combination with a curing agent and a curing accelerator or with a curing catalyst. The base resin includes a cycloaliphatic epoxy compound having at least one alicyclic skeleton and two or more epoxy groups per molecule, and a polyol oligomer having two or more terminal hydroxyl groups. An optical semiconductor device includes an optical semiconductor element sealed by using the liquid thermosetting epoxy resin composition. The composition yields a cured resinous product which is free from curing failure, is optically homogenous, has a low elastic modulus in bending, a high bending strength, a high glass transition temperature, a high optical transparency and is useful for optical semiconductors.
摘要:
An alicyclic diepoxy compound (A) represented by formula (I) is produced in high purity and high yield at low cost, by epoxidizing the corresponding alicyclic diolefin compound with an organic percarboxylic acid. The curable epoxy resin composition has high reactivity for various curing agents, low viscosity, and excellent workability. A cured product thereof shows useful physical properties for uses in coatings, inks, adhesives, sealants, and encapsulants, etc. It is of extremely high quality as an epoxy resin composition for the encapsulation of electronic parts. A stabilizer for an electrical insulating oil (the alicyclic diepoxy compound or an electrical insulting oil containing the compound) is low in acid value, and the stabilizer improves the properties of the insulating oil. A cured product obtained by curing a casting epoxy resin composition for electrical insulation has excellent properties such as high bending strength, high Tg, and low permittivity.
摘要:
Disclosed is a method for producing a cyclic olefin compound having two or more cyclohexene rings per molecule via intramolecular dehydration of an alicyclic alcohol having two or more hydroxylated cyclohexane rings per molecule. The method includes the step (i) of heating the alicyclic alcohol at a temperature of 130° C. to 230° C. and a pressure greater than 20 Torr in an organic solvent in the presence of a dehydration catalyst, to carry out dehydration of the alicyclic alcohol while distilling off by-product water, which dehydration catalyst is liquid or soluble in a liquid reaction mixture under the reaction conditions; and the subsequent step (ii) of heating the resulting reaction mixture at a temperature of 50° C. to 220° C. and a pressure of 200 Torr or less to recover the cyclic olefin compound as a distillate. According to the method, side reactions such as isomerization are suppressed, and high-purity cyclic olefin compounds with less impurities can be simply and efficiently obtained in high yields.
摘要:
There are provided a curable resin composition composed of an epoxy compound having an ionic polymerizability and viscosity of not more than 1,000 cP at 25° C., an acrylic resin having an ionic polymerizable functional group, and a thermally-activating ionic polymerization catalyst which can be dissolved by heating and crystallized by cooling, a method for the preparation thereof, and a coated article using the curable resin composition.The curable resin composition is excellent in storage stability, and a cured coating layer therefrom is excellent in heat resistance, staining resistance, removability of staining substances, or scratch resistance, and an electrical insulating property, and in which dependence of volume resistivity upon temperatures is small, and from which an excellent coated article is obtained, and it is widely utilized in industry.
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 A denotes a residue group of formula (1A) below: ##STR1## and k.sub.1, k.sub.2, Z.sub.1, Z.sub.2, D; R.sub.1 and R.sub.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 ##STR2## wherein Ar denotes an aromatic or heterocyclic core unit, Cp denotes a coupler residue group, and --(N.dbd.N--Cp) denotes such an azo-substituent. The photosensitive member can exhibit good electrophotographic performances including high and stable sensitivity on repetitive use.
摘要翻译:电子照相感光构件由支撑体和设置在支撑体上的感光层形成。 感光层的特征在于含有具有由下式(1)表示的有机基团的偶氮颜料:其中A表示下式(1A)的残基:和k1,k2,Z1,Z2,D; R1和R2在文中定义。 式(1)的基团可以提供具有由Ar表示芳族或杂环核心单元表示的整个结构的至多4个偶氮颜料的偶氮取代基中的至少一个,Cp表示成色剂残基,和 - ( N = N-Cp)表示这种偶氮取代基。 感光构件可以表现出良好的电子照相性能,包括对重复使用的高且稳定的灵敏度。