摘要:
Silicone rubber compositions, of the addition curable type, comprise as a base polymer a vinyl-containing organopolysiloxane having a tetraorganosilethylenesiloxane unit of the following general formula: ##STR1## wherein R.sup.1 to R.sup.4 are each a monovalent hydrocarbon group of from 1 to 10 carbon atoms. The silicone rubber composition gives a cured product having high strength, for example, a tensile strength of 30 kg/cm.sup.2 or above, without compounding fillers or reinforcing agents.
摘要:
An organosilicone-treated silica obtained by treating(A) a silica powder having a specific surface area of at least 50 m.sup.2 /g with(B) a triorgano(1-alkoxyvinyloxy)silane having the formula (I): ##STR1## wherein R.sup.1 is a monovalent hydrocarbon group or an ether linkage-containing organic group, and R.sup.2 are each a substituted or unsubstituted monovalent hydrocarbon group or an ether linkage-containing organic group. The invention also discloses an organopolysiloxane composition containing the organosilicone-treated silica and a process preparing the composition. The organosilicone-treated silica is of high quality, containing no substance with disagreeable smell or corrosiveness which has been by-produced heretofore. Hence, the composition containing the silica is free from pseudocrosslinking such as structuring or crepe hardening.
摘要:
The synthesis and use of a fluorine-containing organic silicon compound represented by: ##STR1## wherein each R.sup.1 independently represents a monovalent hydrocarbon group of 1-10 carbon atoms, and each R.sup.2 independently represents a monovalent hydrocarbon group of 1-10 carbon atoms or a CH.sub.2 CH.sub.2 Rf group, such that at least one R.sup.2 is CH.sub.2 CH.sub.2 Rf, wherein Rf is a perfluoroalkyl group of 1-10 carbon atoms; the compounds of formula (I) are useful in the preparation of fluorine-containing polysilethylenesiloxanes having excellent solvent-resisting and surface-lubricating properties.
摘要:
A bar code reading apparatus includes a scanner, and a measuring circuit for measuring a width of each white bar contained in the bar code and a width of each black bar contained therein and for outputting a measurement signal indicative of the width of the each white or black bar. Further, the apparatus includes first, second and third detection circuits. The first detection circuit detects, from the measurement signal, a white bar having a width equal to or greater than a first reference value and outputs a first detection signal indicative of the width of the white bar. The second detection circuit detects, from the measurement signal, a white bar having a width equal to or greater than a second reference value and outputs a second detection signal indicative of the width of the white bar, the second reference being less than the first reference. The third detection circuit detects, from the measurement signal, a black bar having a width equal or greater than a third reference value and outputs a third detection signal indicative of the width of the black bar. A logic circuit receives the first, second and third detection signals and outputs a margin detection signal indicating detection of the margin area on the basis of the first, second and third detection signals.
摘要:
A novel method is proposed for the synthesis of an organopolysiloxane having two hydrogen atoms directly bonded to the same silicon atom at the molecular chain end. The method comprises mixing a dihydro isopropenyloxy silane with an organosilicon compound having at least one silanolic hydroxy group so that a condensation reaction takes place between the isopropenyloxy group of the former reactant and the silanol group of the latter reactant forming acetone as a by-product. The method is advantageous in respect of the absence of any acidic or basic by-product contained in the product as an impurity in the conventional methods.
摘要:
An automatic set-up system is provided for setting up on a pallet work to be machined by a flexible manufacturing system automatic machine tool. The pallet has a support plate and a jig plate which overlies the support plate on which the work is placed. The support plate, the jig plate and the work are sequentially conveyed by a convey unit on a setting table. The relative positions of the support plate and the jig plate, and of the jig plate and the work are usually held constant by the engagement of positioning recesses and positioning pins. Even if the position of the jig plate or the work conveyed by the convey unit deviates from a predetermined position, a float base and a support plate (the float base, the support plate, and the jig plate) are floated by means of air bearing pads. The horizontal movement of these components can be readily controlled, so that positioning pins can be easily fitted in the positioning recesses. A clamp is mounted on the jig plate by a setting robot; and the clamp is clamped by a nut runner so that the work is fixed to the pallet. The machined work and the pallet are automatically cleaned by a cleaner; and the clamp is removed from the work resting on the setting table. Finally, the work is removed from the pallet.
摘要:
An n-channel MOS dynamic memory cell includes a semiconductor substrate having a p.sup.+ internal region and a p.sup.- surface region disposed on the surface of the internal region except for an n.sup.+ region serving as a bit line, a capacitor electrode disposed above the surface region, and a transfer gate disposed between the capacitor electrode and the n.sup.+ region above the surface region. The surface region except for the n.sup.+ region and a portion of the internal region disposed below the transfer gate are higher in resistivity than at least one of a portion of the internal region disposed below the capacitor electrode and another portion of the internal region disposed below the n.sup.+ region.
摘要翻译:n沟道MOS动态存储单元包括具有p +内部区域的半导体衬底和设置在除了用作位线的n +区域之外的内部区域的表面上的p表面区域,设置在表面区域上方的电容器电极 以及设置在电容器电极和表面区域上方的n +区域之间的传输栅极。 除了n +区域之外的表面区域和设置在转移栅极下方的内部区域的一部分的电阻率高于设置在电容器电极下方的内部区域的一部分中的至少一个以及设置在电极电极下方的内部区域的另一部分 n +区域。
摘要:
A partially-hydrolyzed, solid acrylamide polymer is prepared by bringing a hydrous gel of a water-soluble acrylamide polymer into contact with an aqueous caustic alkali solution, maintaining the polymer at an elevated temperature and under highly humid conditions to hydrolyze certain amido groups of the water-soluble acrylamide polymer and then drying the thus partially-hydrolyzed acrylamide polymer. The resultant polymer contains less water-insoluble components and hardly forms precipitate even in salt water containing calcium ions. It can be suitably used for coagulation of suspension and in secondary oil recovery.
摘要:
A method for manufacturing a semiconductor integrated circuit device having contact apertures with finely-controlled dimensions of 1 .mu.m or less. An ion bombardment layer is formed by bombarding predetermined portions of the substrate of the semiconductor device with nitrogen ions using a direct ion beam imaging technique. The ion bombardment layer is converted into an oxidation-resistant layer by annealing, and an insulating oxide layer is formed on the surface of the substrate in regions other than those on which the oxidation-resistant layer is formed by oxidation. Thereafter, contact recesses are formed upon removing the oxidation-resistant layer.
摘要:
A compressor compressing a fluid including lubricating oil includes, on the discharge side thereof, a first separation chamber for separating the lubricating oil by generating a swirling flow in the fluid. The first separation chamber includes: a circumferential wall; an inflow port that is formed in the circumferential wall and causes the fluid to flow into the first separation chamber; and a guiding plate extending from the circumferential wall. The guiding plate extends so as to face the inflow port in a direction where the fluid flows from the inflow port into the first separation chamber, and so as to deflect the fluid flow from the inflow port to guide it along an inner circumferential surface of the circumferential wall.