Topic
Aromatic hydrocarbon
About: Aromatic hydrocarbon is a research topic. Over the lifetime, 5814 publications have been published within this topic receiving 55499 citations. The topic is also known as: arene & arenes.
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Patent•
23 Oct 1997TL;DR: An electrophotographic photoconductor includes an electroconductive support, and a photoconductive layer formed thereon, containing a novel aromatic polycarbonate resin having a repeat unit of formula (I): as discussed by the authors.
Abstract: An electrophotographic photoconductor includes an electroconductive support, and a photoconductive layer formed thereon, containing a novel aromatic polycarbonate resin having a repeat unit of formula (I): ##STR1## wherein R 1 , R 2 and R 3 each is an alkyl group which may have a substituent, or a halogen atom; R 4 is a hydrogen atom, or an alkyl group which may have a substituent; Ar 1 and Ar 2 each is an aromatic hydrocarbon group which may have a substituent; l, m and n each is an integer of 0 to 4; k is an integer of 5 to 5,000; and X is a bivalent aliphatic group, a bivalent cyclic aliphatic group, or ##STR2## in which R 5 and R 6 each is an alkyl group which may have a substituent, a halogen atom, or an aromatic hydrocarbon group; p and q each is an integer of 0 to 4; and r is 0 or 1, and when r is 1, Y is a straight-chain, branched or cyclic alkylene group having 1 to 12 carbon atoms, --O--, --S--, --SO--, --SO 2 --, or --C(O)--.
16 citations
Patent•
02 Sep 1998
TL;DR: In this article, the problem of providing an optical semiconductor electrode which is excellent in photoelectric transfer efficiency, stability, and durability and can attain easy manufacture by fixing a film including aliphatic hydrocarbon radicals having halogen atoms and pigment having functional groups capable of reacting to the halogen atom on the surface of the film.
Abstract: PROBLEM TO BE SOLVED: To provide an optical semiconductor electrode which is excellent in photoelectric transfer efficiency, stability, and durability and can attain easy manufacture by fixing a film including aliphatic hydrocarbon radicals having halogen atoms and pigment having functional groups capable of reacting to the halogen atoms on the surface of the film. SOLUTION: This electrode involves a semiconductor substrate material, a chemical adsorption film selected from a compound expressed by a formula (I) R M Y 3 , a formula (II) R R M Y 2 , a formula (III) R R R M Y , and a formula (IV) R -SH (where, R : saturated or unsaturated aliphatic hydrocarbon radicals, aromatic hydrocarbon radicals, or complex ring radicals including halogen atoms, R R : aliphatic hydrocarbon radicals, aromatic hydrocarbon radicals, or complex ring radicals in the same radical, saturated or unsaturated condition as R , M : 4-valence element except carbon, and Y : hydrolysis functional group), and a pigment expressed by a formula having a functional group which can react to the halogen atoms absorbed in the surface of the chemical adsorption film.
16 citations
TL;DR: A microactivity test study of the FCC naphtha composition at increasing conversions was carried out in this paper, which showed that, at low conversions, the aromatics in the gasoline are mainly formed by dealkylation of heavy aromatic molecules present in the feed.
Abstract: A microactivity test study of the FCC naphtha composition at increasing conversions was carried out. At low conversions (ca. 10--20%), the naphtha is rich in olefinic and aromatic hydrocarbons. As the conversion increases, the composition changes dramatically. The olefins initially increase and then decrease sharply. The paraffins increase continually, and the aromatics initially decrease and then increase slightly. The naphthenics remain constant in the conversion range studied. These results indicate that, at low conversions, the aromatics in the gasoline are mainly formed by dealkylation of heavy aromatic molecules present in the feed. At higher conversions, however, the aromatics in the naphtha are mainly formed by cyclization followed by hydrogen transfer of the olefins formed during cracking. This reaction also increases the relative concentration of paraffinic hydrocarbons. The distribution of C9 aromatics showed that, as the conversion increases, there occurs an isomerization of the alkyl chain, to increase the branching of the ring.
16 citations
Patent•
27 Apr 2012
TL;DR: In this paper, the authors present a method for synthesizing an optical film that achieves uniform conversion of polarized light over a wide wavelength band, provided that the polymerizable compound can be used as an intermediate for producing the optical film.
Abstract: The present invention pertains to a compound represented by a formula (I) and a method for producing thereof (in the formula, Ax is an organic group having 2 to 30 carbon atoms that includes at least one aromatic ring selected from a group consisting of an aromatic hydrocarbon ring and an aromatic hetero ring, Ay is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group, an alkenyl group having 2 to 18 carbon atoms, an organic group having 2 to 30 carbon atoms that includes at least one aromatic ring selected from a group consisting of an aromatic hydrocarbon ring and an aromatic hetero ring, or the like. Ax and Ay optionally bond to each other to form a ring, and Q is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or the like.). According to the invention, provided are a novel compound that makes it possible to produce an optical film that achieves uniform conversion of polarized light over a wide wavelength band can be inexpensively produced in high yield by utilizing the compound according to one aspect of the invention as an intermediate for producing the polymerizable compound, and a method for producing thereof.
16 citations
Patent•
11 Jan 2012
TL;DR: In this article, a high-pressure separation system is arranged between two reaction areas and is used for controlling an aromatic hydrocarbon saturated depth of the first reaction area, and the total aromatic hydrocarbons content is more than 55% by mass.
Abstract: The invention provides a hydrogenation method for producing high-octane gasoline components by a diesel oil raw material. According to the hydrogenation method, two reaction areas which are respectively filled with a hydrogen refining catalyst and a hydrogen cracking catalyst are provided; a high-pressure separation system is arranged between two reaction areas and is used for controlling an aromatic hydrocarbon saturated depth of the first reaction area; by taking liquid-phase material flow of the first reaction area as the standard, the total aromatic hydrocarbon content is more than 55% by mass, the content of monocyclic ring aromatic hydrocarbon is increased to be more than 40% by mass, and the content of nitrogen of the liquid-phase material flow in the first reaction area is less than 100 micrograms/gram. Through utilizing the method provided by the invention, the diesel oil fractions with poor quality and high aromatic hydrocarbon content can be treated, low-sulfur and high-octane gasoline components can be produced, and clean diesel oil blended components with low sulfur also can be produced.
16 citations