摘要:
To provide a novel ether compound which is useful such as an oil agent and a surfactant having the formula (I): R.sup.1 --O--(AO).sub.n --R.sup.2, wherein R.sup.1 is an alpha-branched alkyl group or an alkyl group having two or more branched chains or a cycloalkyl having 5 to 7 carbon atoms, R.sup.2 is an alkyl or alkenyl each being either branched or straight, each having 10 to 30 carbon atoms, A is an alkylene having 2 to 12 carbon atoms, n is a number from 0 to 30, A's being same as or different from one another.
摘要:
Ether compounds, which are useful as solvents, cosmetics, detergents, lubricants, emulsifiers and so on, are produced by reacting (a) a hydroxy compound with a carbonyl compound of (b) a carbonyl compound under hydrogen atmosphere in the presence of a catalyst with ease and at a low cost. The reaction is carried out while removing out produced water by using a dehydrating agent during the reaction; by distilling off the water by azeotropic dehydration and the like; or by blowing gases such as hydrogen gas to flow through the reaction system.
摘要:
A novel fluorine-containing compound having functions corresponding to those of fluorine is provided, which is stable under various conditions, excellent in compatibility with other solvents, and can be widely utilized as solvents, cosmetics, detergents, emulsifiers, surface finishing agents, lubricants, as well as lubricants or oils in the field of semiconductor/electronics.That is, the present invention provides fluorine-containing ether compounds represented by the general formula (1):Rf--(CH.sub.2).sub.n --O--R.sup.1 (1)(wherein, Rf represents a straight or branched C.sub.1-20 perfluoroalkyl or fluoroalkyl group, R.sup.1 represents a straight or branched C.sub.3-9 alkyl or a C.sub.3-9 cycloalkyl group, n is a number from 1 to 8).
摘要:
A novel fluorine-containing compound having functions corresponding to those of fluorine is provided, which is stable under various conditions, excellent in compatibility with other solvents, and can be widely utilized as solvents, cosmetics, detergents, emulsifiers, surface finishing agents, lubricants, as well as lubricants or oils in the field of semiconductor/electronics.That is, the present invention provides fluorine-containing ether compounds represented by the general formula (1):Rf--(CH.sub.2).sub.n --O--R.sup.1 ( 1)(wherein, Rf represents a straight or branched C.sub.1-20 perfluoroalkyl group, R.sup.1 represents a straight or branched C.sub.11-20 alkyl group, n is a number from 1 to 8) and gelling agent containing the same.
摘要:
A polypeptide capable of strongly inducing and activating dendritic-cell-like cells for treating or prevent cancer by immunotherapy, and DNA encoding the polypeptide. The polypeptide is a polypeptide (a) or (b) consisting of a partial region of the REIC/Dkk-3 protein.
摘要:
The present invention provides a metal plate for heat exchange which facilitates nucleate boiling and is extremely excellent in heat conductivity. In the metal plate for heat exchange of the present invention, a recess part 2 having a depth of 5 μm or more and 10% or less of a plate thickness of the metal plate is formed. A crevasse part 7 is formed at least at a bottom corner 6 of the recess part 2. The crevasse part 7 is formed by cutting away the bottom corner 6 of the recess part 2 in the thickness direction. An angle θ formed by one cut-away surface and the other cut-away surface is 90 degrees or less. In addition, the crevasse part 7 is formed by cutting away a crystal grain 9. The recess part 2 is formed on the surface of the metal plate 1 by pressing a working part 14 formed on a surface of a working roll 12 against the surface of the metal plate 1 being carried.
摘要:
The present invention is directed to chitosan-containing acrylic fibers having a total chitosan content of 0.05 to 2% by weight and an extractable chitosan content of not less than 0.03% by weight to less than the total chitosan content. The antimicrobial activity of the chitosan-containing acrylic fibers of the present invention can persist for a long period of time and is not deteriorated even when subjected to posttreatments, such as dyeing and bleaching of fibers, and treatments in usual service environments of fiber products, such as washing and ironing.
摘要:
The present invention provides a metal plate for heat exchange which facilitates nucleate boiling and is extremely excellent in heat conductivity. In the metal plate for heat exchange of the present invention, a recess part 2 having a depth of 5 μm or more and 10% or less of a plate thickness of the metal plate is formed. A crevasse part 7 is formed at least at a bottom corner 6 of the recess part 2. The crevasse part 7 is formed by cutting away the bottom corner 6 of the recess part 2 in the thickness direction. An angle θ formed by one cut-away surface and the other cut-away surface is 90 degrees or less. In addition, the crevasse part 7 is formed by cutting away a crystal grain 9. The recess part 2 is formed on the surface of the metal plate 1 by pressing a working part 14 formed on a surface of a working roll 12 against the surface of the metal plate 1 being carried.
摘要:
Provided are: a carbon fiber bundle which has a large value of single-fiber fineness and excellent productivity and which, despite this, contains few interlaced single fibers therein and has excellent spreadability; and precursor fibers which are suitable for use in producing the carbon fiber bundle. The precursor fibers are a carbon-fiber-precursor acrylic fiber bundle which comprises a polyacrylonitrile copolymer comprising 95-99 mol % acrylonitrile units and 1-5 mol % hydroxyalkyl (meth)acrylate units and which has a single-fiber fineness of 1.5-5.0 dtex. In the acrylic fiber bundle, the cross-section of each single fiber which is perpendicular to the fiber axis has a shape that has a roundness of 0.9 or less. The roundness is a value determined using equation (1) where S and L are the cross-sectional area and the circumferential length, respectively, of a single fiber which are obtained by examining, with an SEM, the cross-section of the single fiber which is perpendicular to the fiber axis and analyzing the obtained image. Roundness=4pS/L2 (1)
摘要:
Provided is a carbon fiber bundle for obtaining a fiber-reinforced plastic having high mechanical characteristics. An acrylonitrile swollen fiber for a carbon fiber having openings of 10 nm or more in width in the circumference direction of the swollen fiber at a ratio in the range of 0.3 openings/μm2 or more and 2 openings/μm2 or less on the surface of the swollen fiber, and the swollen fiber is not treated with a finishing oil agent. A precursor fiber obtained by treating the swollen fiber with a silicone-based finishing oil agent has a silicon content of 1700 ppm or more and 5000 ppm or less, and the silicon content is 50 ppm or more and 300 ppm or less after the finishing oil agent is washed away with methyl ethyl ketone by using a Soxhlet extraction apparatus for 8 hours. The fiber is preferably an acrylonitrile copolymer containing acrylonitrile in an amount of 96.0 mass % or more and 99.7 mass % or less and an unsaturated hydrocarbon having at least one carboxyl group or ester group in an amount of 0.3 mass % or more and 4.0 mass % or less.