摘要:
A material for an optical circuit-electrical circuit mixedly mounting substrate comprises a light permeable resin layer, and an optical circuit forming layer that is made of a light permeable resin of which refractive index increases (or decreases) when irradiated with an activating energy beam and is disposed adjacent to the light permeable resin layer, wherein a refractive index of a portion of the optical circuit forming layer is higher (or lower) than that of the light permeable resin layer when the material for the optical circuit-electrical circuit mixedly mounting substrate is irradiated with an activating energy beam so that said portion is irradiated.
摘要:
A method for producing an α,β-unsaturated carboxylic acid ester is provided in which an alcohol (A) is caused to react with an α,β-unsaturated carboxylic acid or a lower alkyl ester (B) of the α,β-unsaturated carboxylic acid in the presence of a sulfonic acid group-carrying inorganic porous material (α), and an α,β-unsaturated carboxylic acid ester obtained by the above-described method is provided that contains not more than 50 ppm of sulfur atoms based on a weight of the α,β-unsaturated carboxylic acid ester, not more than 2 mol % of by-product etherification products and not more than 1 mol % of by-product addition products based on the mole number of the α,β-unsaturated carboxylic acid ester. Such methods are a method for producing an α,β-unsaturated carboxylic acid ester that does not involve generation of a large amount of waste products and a method for producing a high-purity α,β-unsaturated carboxylic acid ester that causes only a smaller amount of by-products to be generated, and a high-purity α,β-unsaturated carboxylic acid ester is provided that contains only a smaller amount of catalyst residues and exhibits less metal corrosion behavior.
摘要:
TPE and TPV excellent in flexibility, compression set and mechanical strength are obtained by using a conjugated diene-based polymer having a sharp molecular weight distribution which is obtained by polymerization using a neodymium-based catalyst. A thermoplastic elastomer composition containing (A) a conjugated diene-based polymer obtained by polymerizing a conjugated diene-based compound using a rare earth element compound-based catalyst and (B) a thermoplastic resin, and a formed article using the same.
摘要:
The thermoplastic elastomer composition in the present invention comprises an ethylene.&agr;-olefinic copolymeric rubber (A) whose intrinsic viscosity [&eegr;] determined at 135° C. in decalin solvent is 3.5 to 6.8 dl/g, a mineral oil-based softener (B), an &agr;-olefinic crystalline polymer (C) whose degree of crystallinity is 50% or higher and an &agr;-olefinic amorphous polymer (D) whose melt viscosity at 190° C. is 50,000 cPs or less and whose degree of crystallinity is less than 50%, and at least a part of a mixture containing 20 to 63% by mass of the (A), 35 to 78% by mass of the (B), 1 to 12% by mass of the (C) and 1 to 12% by mass of the (D), based on 100% by mass of the total of the components (A), (B), (C) and (D), is crosslinked.
摘要:
An olefin thermoplastic elastomer containing an olefin random copolymer formed by copolymerizing ethylene, an &agr;-olefin having 3 to 10 carbon atoms and an unsaturated monomer having a functional group, and optionally a non-conjugated diene, and metal ions crosslinking the olefin random copolymer, has the same or similar rubber elasticity, flexibility and molding and processability as the conventional olefin thermoplastic elastomers, and has good mechanical properties, wear resistance, in particular scratch resistance.
摘要:
Provided by the present invention are (1) a dry toner excellent in powder flowability and transferability when formed as a small-particle-size toner; (2) a dry toner excellent in any one of heat storage stability, low-temperature fixing property and anti-hot offset property; (3) a dry toner excellent in gloss exhibition when an image is formed by a full color copying machine; and (4) a dry toner which does not need application of an oil to a heat roll. Described specifically, provided by the present invention is a dry toner comprising a toner binder and a colorant, wherein the toner has a Wadell's practical sphericity ranging from 0.90 to 1.00, the toner binder contains a high-molecular-weight condensation resin (A) and a low-molecular-weight condensation resin (B), a ratio (MnA/MnB) of the number average molecular weight (MnA) of the resin (A) to the number average molecular weight (MnB) of the resin (B) is at least 1.6, and a ratio (MwA/MwB) of the weight average molecular weight (MwA) of the resin (A) to the weight average molecular weight (MwB) of the resin (B) is at least 2.
摘要:
A thermoplastic elastomer composition prepared by dynamically treating with heat (a) an oil-extended ethylene-based copolymer rubber which comprises an ethylene-based copolymer rubber with an intrisic viscosity [.eta.] in the range from 4.3 to 6.8 dl/g when measured at 135.degree. C. in decalin and a mineral oil softening agent and (b) an olefin-based resin, in the presence of a crosslinking agent. The composition exhibits well-balanced and excellent elasticity recoverability and moldability, and can produce molded articles with superior appearance.
摘要:
In a direct conversion receiver with an AFC function comprising a local oscillation circuit constituted by a synthesizer, the local oscillation frequency is prevented from radiating as an interfere wave against the receiver per se so as not to reduce the reception characteristic, and it is made possible to reduce the value of the multiplication factor N of a multiplier in the synthesizer without making the frequency of a VCO per se high. Specifically, a first local oscillation signal 12 obtained by multiplying an output frequency F.sub.X of a reference crystal oscillation circuit portion 8 of a synthesizer circuit section 7 by M by a multiplier 11 is mixed with an FSK modulation signal 1 in a first mixer 4. In a second mixer 5, the thus mixed signal is further mixed with a second local oscillation signal 13 obtained by multiplying an output frequency F.sub.V of a synthesizer 9 by N by a multiplier 10. The frequencies of the first and second local oscillation signals are selected so as to establish the condition M.multidot.F.sub.X >N.multidot.F.sub.V so that the multiplication factor N of the multiplier 10 can be made small.
摘要:
An intermittent operation receiver comprises a receiving circuit 8 receiving one of plural intermittent receiving operation information and data transmitted from a base station and generating its demodulated signal 24, a PLL circuit 7 including a voltage-controlled oscillator 5 and generating two kinds of local signals 25 and 26 different 90.degree. in their phases which are sent to the receiving circuit 8 to process the input signal, and a data processing section 14 which receives the demodulated signal 24 from the receiving circuit 8, decodes the data to generate a first intermittent cycle generation timing signal 18 including a period corresponding to the cycle information of the intermittent receiving operation, and sends this first intermittent cycle generation timing signal 18 to receiving circuit 8 to control the power supply from its power source unit. Meanwhile, data processing section 14 selectively determines a pre-heat time t1, t2 or t3 in accordance with the designated intermittent operating cycle, generates a second intermittent cycle generation timing signal 19 involving the timing of the pre-heat time, and sends this second intermittent cycle generation timing signal 19 to the PLL circuit 7 to control the power supply from its power source unit.
摘要:
A vertical boat for holding a plurality of semiconductor wafers comprising two end members (2) positioned at the top and the bottom of the vertical boat, and a plurality of support members (3,4,5,6,104) vertically mounted on the end members (2) for supporting the wafers, wherein each support member (3,4,5,6,104) is formed by a plate-like member having a series of slits (9,10,7,8,108) formed thereon in such a manner that a plurality of support arms are defined by the slits (9,10,7,8,108) at a predetermined interval, each support arm having a support projection (11,12,13,14,112) formed at the end thereof, and wherein the inner portions (P) of the wafer (1) is to be supported by the support projections (11,12,13,14,112) whereas the periphery of the wafer (1) does not contact the arms of the support members (3,4,5,6,104). The slits can be formed in two steps: forming a series of first slit portions on the plate-like member at a predetermined interval so as to retain two side walls of the plate-like member; and forming a series of second small slit portions on one of the side walls at the same interval so as to connect each second slit portion to the corresponding first slit portion.