139 results about "Saturated aliphatic hydrocarbons" patented technology

The present invention provides a method for producing a polyolefin composition having a narrow composition distribution and is characterized in that when at least two olefins are copolymerized in the presence of a transition metal compound catalyst using at least two gas phase fluidized bed reactors, a saturated aliphatic hydrocarbon is allowed to exist in each reactor in a concentration from 0.1 to 30 mol %, and the ratio of the concentration (C2) of a saturated aliphatic hydrocarbon in a reactor of a second stage to the concentration (C1) of a saturated aliphatic hydrocarbon in a reactor of a first stage (C2/C1) is 0.13 or more. Further, the present invention provides a method for producing a polyolefin composition by multi-stage polymerization, which can prevent sheeting in the reactor and can give a polyolefin composition stably with high productivity, and is characterized in that a saturated aliphatic hydrocarbon is allowed to exist in a transport line for transporting a polymer particle extracted from a fluidized bed reactor in the previous stage to a fluidized bed reactor in the subsequent stage at a concentration from 0.1 to 30 mol %.

The present invention provides a process for producing a saturated aliphatic hydrocarbon prepared using an α-olefin as a raw material and represented by the general formula (1), including the steps of: (I) producing a vinylidene olefin by dimerizing the α-olefin in the presence of a metallocene complex catalyst; (II) further dimerizing the vinylidene olefin in the presence of an acid catalyst; and (III) hydrogenating the obtained dimer. Further, there are provided a lubricant composition containing the saturated aliphatic hydrocarbon compound produced by the above process, a bearing oil consisting of the lubricant composition, and making use of the same, a bearing and gyral equipment. The saturated aliphatic hydrocarbon compounds produced by the process of the present invention have low-temperature fluidity, exhibiting low evaporativity, and excellent in thermal stability and oxidation stability. Thus, the saturated aliphatic hydrocarbon compounds are suitable for use as, for example, a base oil of lubricant composition for hydraulic pressure, turbine, working machine, bearing, gear, metal-working, etc.

A photoelectric conversion element having a pair of electrodes, and a semiconductor layer comprising a semiconductor carrying a dye and an electrolyte layer is disclosed. The dye is represented by Formulas 1 or 2;

in Formula 1, Ar₁ and Ar₂ are each an arylene or heterocyclic group, or a composite group of an arylene group and a heterocyclic group, each of which may have a substituent, Ar₃ is an aryl or heterocyclic group or a composite group of an arylene group and a heterocyclic group, each of which may have a substituent, Ar₁, Ar₂ and Ar₃ may form a ring by bonding with each other, X₁ and X₂ are each a straight chain residue having an acidic group which may have a mono-valent substituent, and one to eight saturated or unsaturated aliphatic hydrocarbon group having 5 to 30 carbon atoms are contained among Ar₁, Ar₂ and Ar₃;

in the formula, Ar₁₁, Ar₁₂, Ar₁₃, Ar₁₄ and Ar₁₅ are each an arylene or heterocyclic group, or a composite group of an arylene group and a heterocyclic group, each of which may have a substituent, Ar₁₁, Ar₁₂, Ar₁₃, Ar₁₄ and Ar₁₅ may form a ring by bonding with together, at least two of X₁₁, X₁₂, X₁₃ and X₁₄ are each an alkyl or alkenyl group having an acidic group which may have a mono-valent substituent and the remainders are each a hydrogen atom, and one to eight saturated or unsaturated aliphatic hydrocarbon group having 5 to 30 carbon atoms are contained among Ar₁₁, Ar₁₂, Ar₁₃, Ar₁₄ and Ar₁₅.

It relates to high purity single-walled carbon nanotubes having controlled diameter, useful as industrial materials, including high-strength carbon wire rods, particularly uniform single-walled carbon nanotubes having diameter fallen in a range of from 1.0 to 2.0 nm, and a method for producing the same efficiently, in large amount and inexpensively. The single-walled carbon nanotube obtained is characterized in that its diameter is fallen in a range of from 1.0 to 2.0 nm, and an intensity ratio IG/ID between G-band and D-band in a Raman spectrum is 200 or more. Furthermore, those single-walled carbon nanotubes are synthesized by a gas-phase flow CVD method that uses a saturated aliphatic hydrocarbon which is liquid at ordinary temperature as a first carbon source and an unsaturated aliphatic hydrocarbon which is gas at ordinary temperature as a second carbon source.

A compound having GSK-3 inhibiting function.

A¹ and A³ are a single bond, an aliphatic hydrocarbon group; A² and A⁴ are a single bond, CO, COO, CONR, O, OCO, NR, NRCO, NRCOO, etc.; G¹ is a single bond, an aliphatic hydrocarbon, aromatic hydrocarbon, heterocyclic; G² is a hydrogen atom, an aliphatic hydrocarbon, an alicyclic hydrocarbon, an aromatic hydrocarbon, heterocyclic; A⁵ is a single bond, NR; R² is H, halogen, an aliphatic hydrocarbon, alicyclic hydrocarbon, aromatic hydrocarbon, heterocyclic; A⁶ is a single bond, NR, CO, NRCO, NRCONR, CONR, COO, O, etc.; R³ is H, halogen, nitro, saturated aliphatic hydrocarbon, alicyclic hydrocarbon, aromatic hydrocarbon, heterocyclic; and when A⁶ is CR═CR or C≡C; R³ may be a trimethylsilyl, formyl, acyl, carboxyl, alkoxylcarbonyl, carbamoyl, alkylcarbamoyl or cyano group; and R is H or an aliphatic hydrocarbon group.

A silicon-containing compound of formula (1), and a curing composition containing a silicon-containing compound of formula (1) wherein Z is hydrogen, a silicon-containing compound of formula (1) wherein Z is C2-C4 alkenyl or alkynyl and a hydrosilylation catalyst. The composition has excellent handling and curing properties and provides a cured product with excellent heat resistance and flexibility.

In formula (1), R^a—R^g=C1-C12 saturated aliphatic hydrocarbon group or C6-C12 aromatic hydrocarbon group. R^e and R^f do not simultaneously represent C1-C12 saturated aliphatic hydrocarbon group; Y═C2-C4 alkylene; Z=hydrogen or C2-C4 alkenyl or alkynyl; K is 2-7; T is 1-7; P is 0-3; and M and N are numbers selected such that N:M=1:1 to 1:100, that all M's and N's total at least 15, and that the mass average molecular weight of the compound of formula (1) is 3,000 to 1,000,000.

The selective saturation of unsaturated aliphatic hydrocarbons (e.g., diolefins) in a hydrogenation feed stream comprising an aromatic compound (e.g., benzene) and one or more nitrogen compounds renders is beneficial when the stream or a portion thereof is subsequently treated (e.g., with a zeolitic adsorbent) to remove nitrogen. In particular, the selective saturation of, for example, olefins and diolefins prolongs the life of the nitrogen guard bed. In a representative embodiment, the selective hydrogenation is applied to a recycle benzene-containing stream recovered in the separation section (e.g., from the benzene/toluene splitter overhead) of a styrene production process, prior to treatment with a nitrogen guard bed adsorbent.

PCT No. PCT/JP98/00192 Sec. 371 Date Sep. 10, 1998 Sec. 102(e) Date Sep. 10, 1998 PCT Filed Jan. 20, 1998 PCT Pub. No. WO98/32729 PCT Pub. Date Jul. 30, 1998An alicyclic polyamine of the formula (1) wherein Y1 represents a saturated aliphatic hydrocarbon group and R1 through R4 are the same or different and each represents hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, or an aralkyl group. The alicyclic polyamine can be obtained by subjecting a 3-formylcycloalkanone or 3-formylcycloalkenone to reductive amination reaction.

The invention discloses a halogen-free flame retarding compounded system based on a phosphorus/aluminum compound. The compounded system, on the basis of total weight of 100%, includes 40-90% of diethyl aluminum hypophosphite, 10-50% of organic aluminum phosphite, and 1-10% of a zinc salt thermal stable compound. The organic aluminum phosphite is represented as the structural formula (I), wherein Ris selected from C1-C6 straight-chain saturated aliphatic hydrocarbon groups, C1-C6 straight-chain unsaturated aliphatic hydrocarbon groups or aryl groups. The invention discloses a novel halogen-free flame retarding compounded system based on the phosphorus/aluminum compound; the system has high flame retarding performance, is free of migration and has no corrosion on equipment, can be applied to glass fiber reinforced engineering plastic to produce halogen-free flame-retarding glass fiber reinforced engineering plastic, which is used for manufacturing parts of products in the field of electronics and electric appliances.

The invention discloses a process for alkylation of isoalkane and olefin, which comprises subjecting reaction raw material containing isoalkane and alkene to alkylation reaction at the presence of solid acid catalyst and a dielectric, wherein the solid acid catalyst is a composite material consisting of SiO2 and/or Al2O3 with nano beta molecular sieve, said dielectric being mixture of one or more selected from, C2-C6 oxygen-containing organic compound, C2-C6 halogen-containing organic compound, C3-C16 saturated aliphatic hydrocarbon.

A vitamin D derivative of general formula (1):wherein X represents an oxygen or sulfur atom, R11 represents a saturated or unsaturated aliphatic hydrocarbon group which may be substituted by a hydroxyl group or a protected hydroxyl group, or a -COR12 group where R12 represents an alkyl, aryl or alkoxy group, R2 represents -OR9 or a hydrogen atom, and R9 and R10 each represent a hydrogen atom or a hydroxyl group.

A silsesquioxane resin, a positive resist composition, a resist laminate, and a method of forming a resist pattern that are capable of suppressing a degas phenomenon are provided, and a silicon-containing resist composition and a method of forming a resist pattern that are ideally suited to immersion lithography are also provided. The silsesquioxane resin includes structural units represented by the general shown below [wherein, R¹ and R² each represent, independently, a straight chain, branched, or cyclic saturated aliphatic hydrocarbon group; R³ represents an acid dissociable, dissolution inhibiting group containing a hydrocarbon group that includes an aliphatic monocyclic or polycyclic group; R⁴ represents a hydrogen atom, or a straight chain, branched, or cyclic alkyl group; X represents an alkyl group of 1 to 8 carbon atoms in which at least one hydrogen atom has been substituted with a fluorine atom; and m represents an integer from 1 to 3].

The invention discloses a glycopeptide antibiotic derivative shown as a general formula (I) and pharmaceutically accepted salt thereof, and a preparation method thereof. R1 represents C3-9 saturated fatty alkyl, decylamine methyl or an aromatic group, which is unsubstituted or substituted phenyl ring, biphenyl ring or naphthalene ring; and a substituent of the phenyl ring, biphenyl ring or naphthalene ring is one or more selected from the group of halogen, hydroxy, amino, C1-9 alkyloxy, nitro and isopropyl. R2 represents H or CH2-R3. R3 represents C3-9 saturated aliphatic hydrocarbon group. In addition, the invention also provides a pharmaceutical composition containing the glycopeptide antibiotic derivative and pharmaceutically acceptable salt thereof as active components, and application thereof. The compound and pharmaceutical composition provided by the invention have good antibiosis activity and great significance for development of novel antibacterial medicament.

The present invention relates to a polysiloxane composition which contains

• (A) at least one type of organopolysiloxane that contains at least two unsaturated aliphatic hydrocarbon groups in the molecule,
• (B) at least one type of organohydrogenpolysiloxane that contains at least two silicon-bonded hydrogen atoms in the molecule,
• (C) a hydrosilylation reaction catalyst, and
• (D) inorganic particles which have a major axis to minor axis ratio of 1 to 1.5 and in which the proportion of particles having a diameter of 50 μm or greater is 5 wt. % or less of the total quantity of particles,
• and which satisfies prescribed conditions. The polysiloxane composition of the present invention has good processability and can provide a hard cured product having an extremely low coefficient of thermal expansion after curing.

Non-absorbent articles are disclosed. The non-absorbent articles include an effective amount of an aromatic inhibitory compound to substantially inhibit the production of exotoxins by Gram positive bacteria. The aromatic inhibitory compounds of the present invention have the general formula:

wherein R¹ is selected from the group consisting of H,

• • —OR⁵, —R⁶C(O)H, —R⁶OH, —R⁶COOH, —OR⁶OH, —OR⁶COOH, —C(O)NH₂,

and NH₂ and salts thereof; R⁵ is a monovalent saturated or unsaturated aliphatic hydrocarbyl moiety; R⁶ is a divalent saturated or unsaturated aliphatic hydrocarbyl moiety; R⁷ is a trivalent saturated or unsaturated aliphatic hydrocarbyl moiety; R⁸ is a monovalent substituted or unsubstituted saturated or unsaturated aliphatic hydrocarbyl moiety which may or may not be interrupted with hetero atoms; R², R³, and R⁴ are independently selected from the group consisting of H, OH, COOH, and —C(O)R⁹; R⁹ is hydrogen or a monovalent saturated or unsaturated aliphatic hydrocarbyl moiety.

A process is disclosed for the preparing silicone polyethers by reacting; (A) a polyether having at least one terminally unsaturated aliphatic hydrocarbon group and an alkali metal content of less than 50 ppm, (B) an organohydrogensiloxane having an acid number of less than 0.005, via a hydrosilylation reaction. The process is particularly useful to prepare silicone polyethers of improved quality via a continuous process.

The present invention relates to a hydrosilylation-curable organopolysiloxane resin composition for a light-transmitting component, especially a light-transmitting component used as an optical communication element, which comprises (A) an aliphatic compound having three or more monovalent unsaturated Hydrocarbyl and aromatic hydrocarbon-based organopolysiloxane resins, (B) an organosilicon compound having two or more silicon-bonded hydrogen atoms and aromatic hydrocarbon groups, (C) a hydrosilylation catalyst, and optionally ( D) (d1) solvent or (d2) hydrosilylation-reactive organosiloxane type diluent relating to a light-transmitting component represented by an optical waveguide comprising a hydrosilylation cured product of the above-mentioned organopolysiloxane resin and organosilicon compound , and also relates to a method of manufacturing a light-transmitting component.

Disclosed is a method for removing unsaturated aliphatic compounds from a hydrocarbon feed stream by contacting the hydrocarbon feed stream with an acidic molecular sieve to produce a hydrocarbon effluent stream having a lower unsaturated aliphatic content relative to the hydrocarbon feed stream. The hydrocarbon feed stream comprises an aromatic compound, a nitrogen compound, and an unsaturated aliphatic compound.