摘要:
[Object] An object of the present invention is to provide a method for producing an olefin polymer, with which an olefin polymer having good particle properties can be produced in high activity, contamination inside the polymerization vessel, such as a vessel wall or an impeller, can be effectively prevented, and a long-term stable operation is achieved.[Means for Achieving the Object] A method for producing an olefin polymer according to the present invention is characterized by including (co)polymerizing at least one olefin selected from the group consisting of ethylene and α-olefins having 3 to 20 carbon atoms in a polymerization vessel in the presence of (A) a solid catalyst component for olefin polymerization, (B) an aliphatic amide, and (C) an organoaluminum compound.
摘要:
Disclosed is a ferritic heat-resistant steel which has the following chemical composition (by weight): C: from 0.01% to less than 0.08%; Si: 0.30-1.0%; P: 0.02 or less; S: 0.010% or less; Mn: 0.2-1.2%; Ni: 0.3% or less; Cr: 8.0-11.0%; Mo: 0.1-1.2%; W: 1.0-2.5%; V: 0.10-0.30%; Nb: 0.02-0.12%; Co: 0.01-4.0%; N: 0.01-0.08%; B: not less than 0.001% and less than 0.010%; Cu: 0.3% or less; and Al: 0.010% or less, provided that the chemical composition satisfies the following equations: Mo (%)+0.5×W (%)=1.0-1.6, and C (%)+N (%)=0.02-0.15%, and which comprises a tempered martensite single-phase tissue produced by thermal refining and contains 30% by weight or less of δ ferrite.
摘要:
An antigen exposure chamber for quickly performing cleaning and drying with high quality is provided. The antigen exposure chamber of the present invention includes: a cleaning water supply device for supplying cleaning water for cleaning the antigen exposure chamber; cleaning nozzles for jetting the cleaning water supplied from the cleaning water supply device into the antigen exposure chamber and ducts of fan units to clean the antigen exposure chamber and the ducts; a floor surface of the antigen exposure chamber; and an exhaust device provided below the floor surface to exhaust air from the floor surface of the antigen exposure chamber and collect and drain the cleaning water during cleaning.
摘要:
A novel epoxy compound represented by the following general formula (I), and a production process thereof, is provided: Y—(CH2)3—Si(OR1)nR23-n (I) (wherein, Y is represented by any of the following formulas: wherein, R1 and R2 represent alkyl groups having 1 to 5 carbon atoms, n represents an integer of 1 to 3, R3 and R4 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, R5 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a trialkylsilyl group having 1 to 4 carbon atoms, R6 to R12 represent hydrogen atoms, alkyl groups having 1 to 6 carbon atoms or trialkylsilyl groups having 1 to 4 carbon atoms, and R13 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a trialkylsilyl group having 1 to 4 carbon atoms or an aryl group).
摘要:
Novel epoxy compounds having imide structures represented by general formula (I) or general formula (II) below, and having an allyl group in the same molecule, as well as a process for their production. (wherein R1 and R2 each represent hydrogen, a C1-6 alkyl group, or a C1-4 trialkylsilyl group) (wherein R3 represents hydrogen, a C1-6 alkyl group, or a C1-4 trialkylsilyl group)
摘要:
Novel epoxy compounds represented by the general formula: (wherein R1 and R2 each represent hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, each R3 may be the same or different and each independently represents hydrogen, alkyl, aryl, aralkyl, alkenyl or fluoroalkyl, and n is 0 or a positive integer), and the general formula: (wherein R3 represents the same groups specified above, R4 represents hydrogen, a C1-6 alkyl group or a C1-4 trialkylsilyl group, and n is 0 or a positive integer), and a process for their production.
摘要:
A gas turbine for power generation operated at a turbine nozzle inlet temperature ranging from 1200 to 1650° C., which is improved to obtain a high heat efficiency by making disk blades and nozzles arranged in first to final stages from optimum materials and optimally cooling these disk blades and nozzles, and to obtain a combined power generation system using the gas turbine. The combined power generation system includes a highly efficient gas turbine operated at a turbine nozzle inlet combustion gas temperature ranging from 1200 to 1650° C., and a high pressure-intermediate pressure-low pressure integral type steam turbine operated at a steam inlet temperature of 530° C. or more, wherein the gas turbine is configured such that turbine blades, nozzles and disks are each cooled, and the blades and nozzles are each made from an Ni-based alloy having a single crystal or columnar crystal structure and disks are made from a martensite steel.
摘要:
A converter for a satellite signal receiving antenna, comprising a input terminal for inputting a signal in a frequency band other than the output frequency band of the IF signal converted from the satellite signal, and where the IF signal and signal from the input terminal are mixed by a mixing circuit, and output through a coaxial cable from the IF output terminal.
摘要:
A heat resisting steel whose metal structure is entirely martensite phase produced by tempering after quenching. The steel comprises, by weight, 0.05 to 0.20% C, not more than 0.15% Si, not more than 1.5% Mn, not more than 1.0% Ni, 8.5 to 13.0% Cr, not more than 3.50% Mo, not more than 3.5% W, 0.05 to 0.30% V, 0.01 to 0.20% Nb, not more than 5.0% Co, 0.001 to 0.020% boron, 0.005 to 0.040% nitrogen, 0.0005 to 0.0050% oxygen and 0.00001 to 0.0002% hydrogen. The steel has preferably not more than 10 of the Cr equivalent. The steel has 10 kgf/mm.sup.2 or more of 100,000 hours creep rupture strength at 650.degree. C.
摘要翻译:淬火后通过回火生产金属结构完全是马氏体相的耐热钢。 该钢包含0.05〜0.20%的C,不大于0.15%的Si,不超过1.5%的Mn,不超过1.0%的Ni,8.5〜13.0%的Cr,不大于3.50%的Mo,不大于 3.5%W,0.05〜0.30%V,0.01〜0.20%Nb,5.0%以下的Co,0.001〜0.020%的硼,0.005〜0.040%的氮,0.0005〜0.0050%的氧和0.00001〜0.0002%的氢。 钢优选不超过10当量的Cr当量。 该钢在650℃下具有10kgf / mm 2以上的100,000小时蠕变断裂强度
摘要:
A catalyst for producing a polyolefin having a high melting point and a high stereoregularity, which comprises: (A) a solid catalyst component containing titanium, magnesium and halogen, (B) an organic aluminum compound, and (C) an organic silicon compound represented by Formula (1); ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each represents a C.sub.1-3 hydrocarbon group.