Abstract: A process for producing catalyst ingredient for use in olefin polymerization which comprises contacting (A) a magnesium hydrocarbyloxide and (B) a silicon compound having hydrogen-silicon bonds in the presence of a hydrocarbon medium, contacting the thus obtained solid product (C) a halogenated titanium compound in the presence or absence of a hydrocarbon medium and then adding to contact (D) an electron donating compound.

Abstract: A process for producing a catalyst component for polymerization of olefins which comprises contacting (a) a metal oxide with (b) an organomagnesium compound represented by the formula RMgR' wherein R denotes a hydrocarbyl group and R' denotes a hydrocarbyl group or a halogen atom, contacting the resulting contacting product with (c) carbon dioxide, and further contacting the resulting contact product with (d) a titanium compound. Optionally, the carbon dioxide contacted contact product can be treated with the halogen-containing compound prior to contact with the titanium compound.

Abstract: A micro-porous membrane of ultra-high-molecular-weight alpha-olefin polymer having a weight-average molecular weight greater than 5.times.10.sup.5, the micro-porous membrane having through holes 0.01 to 1 micrometer in average pore size, with a void ratio from 30 to 90% and being oriented such that the linear draw ratio in one axis is greater than two and the areal draw ratio is greater than ten. The micro-porous membrane is obtained by forming a gel-like object from a solution of an alpha-olefin polymer having a weight-average molecular weight greater than 5.times.10.sup.5, removing at least 10 wt % of the solvent contained in the gel-like object so that the gel-like object contains 10 to 90 wt % of alpa-olefin polymer, orientating the gel-like object at a temperature lower than that which is 10.degree. C. above the melting point of the alpa-olefin polymer, and removing the residual solvent from the orientated product.

Abstract: This invention consists of a vibration element for use on an ultrasonic injection nozzle, the vibrating element being formed around its outer periphery with a multi-stepped edged portion having one or more projecting steps each defining an edge, the edges having the same diameter and the edged portion being adapted to be supplied with liquid.

Abstract: An ultrasonic injection nozzle includes an ultrasonic generator, an elongated vibrating element, a liquid feeder and a solenoid valve. The vibrating element has a first and second end. The generator is connected to the first end. A multi-stepped edge portion is connected to the second end. Each step of the edged portion defines an edge. The liquid feeder is located adjacent the second end. The solenoid valve is in communication with the liquid feeder.

Abstract: The present invention consists of an ultrasonic atomizing vibratory element having a multi-stepped edged portion formed around the outer periphery thereof. The edged portion has at least two steps each defining an edge and being adapted to be supplied with liquid to be atomized. The vibratory element is provided with a liquid supply groove extending generally longitudinally to supply the liquid to the edge portion in a consistent and stable manner.

Abstract: The present invention consists of a vibrating element for ultrasonic atomization formed around its inner or outer periphery with a multi-stepped edged portion having at least two steps, each edged portion defining an edge, the edged portions being supplied with liquid for atomization, wherein the multi-stepped edged portion includes successively connected continuous curved surfaces where the steps are partially formed with a curved surface.

Abstract: The present invention consists of a vibrating element for ultrasonic injection in which the edged portion for atomizing liquid includes helical screw threads having either a uniformed diameter or varying diameters.

Abstract: A catalyst component for the polymerization of olefins which is prepared by contacting (1) a contact reaction product of (a) a metal oxide, (b) a dihydrocarbyl magnesium, and (c) a halogen-containing alcohol held with (d) an electron-donating compound, and (e) a titanium compound.

Abstract: Silanes are produced by the disproportionation and/or redistribution reaction of chlorosilanes using a novel catalyst having a longer life and consisting of a quaternary phosphonium salt bonded to an organic macromolecule or polymer, represented by the following general formula: ##STR1## wherein .circle.P is an organic macromolecule or polymer, A is a bridging group between phosphorus and the organic macromolecule or polymer, R.sup.1, R.sup.2 and R.sup.3 are selected from the group consisting of hydrogen, C.sub.1 -C.sub.20 alkyl groups and aralkyl groups such as benzyl and phenethyl groups, which can contain oxygen or halogen atoms, and X is a halogen atom.

Abstract: A wear-resistant, synthetic lubricating oil composition comprises as a base oil a synthetic oil mixture consisting of (A) a diester of an aliphatic dibasic acid having 4-14 carbon atoms and an alcohol having so many carbon atoms or a mixture of several such diesters and having a viscosity at 100.degree. C. of 2.0-7.0 mm.sup.2 /s, and (B) a polyoxyalkylene glycol whose alkylene group contains 2-5 carbon atoms or a mixture of several such glycols and having a viscosity at 100.degree. C. of at least 20 mm.sup.2 /s. The base oil exhibits viscosity values of 9 mm.sup.2 /s or above at 100.degree. C. and 6.times.10.sup.4 mPa.s or below at -40.degree. C.

Abstract: A process for producing a propylene polymer having a carbonyl group at the terminal, said process comprising polymerizing propylene to give a living propylene polymer in the presence of a catalyst composed of beta-diketone vanadium chelate and an aluminum compound represented by the formula R.sub.2 AlX (wherein R is a hydrocarbon group having 1 to 8 carbon atoms and X is a halogen atom), and reacting the living propylene polymer with a carbonylating agent.

Abstract: A process for homopolymerizing an olefin or copolymerizing an olefin with another olefin in the presence of a catalyst composed of(a) a solid catalyst component containing magnesium atoms, titanium atoms, halogen atoms, and an electron donor compound,(b) an organoaluminum compound represented by the formula R.sup.1 R.sup.2 R.sup.3 Al (wherein R.sup.1, R.sup.2, and R.sup.3, which may be the same or different, each denote a C.sub.1-20 alkyl, alkenyl, cycloalkyl, aryl, aralkyl, or alkoxy group, or a hydrogen atom;(c) an organoaluminum compound represented by the formula R.sup.4.sub.3-n AlX.sub.n (wherein R.sup.4 denotes a C.sub.1-20 alkyl, alkenyl, cycloalkyl, aryl, aralkyl, or alkoxy group; X denotes a halogen atom; and n.gtoreq.1),(d) an electron donor compound containing a nitrogen atom, sulfur atom, oxygen atom, or phosphorus atom, and(e) an aromatic ester compound.

Abstract: A process for preparing a catalyst component for the polymerization of olefins which comprises the steps of contacting (a) a magnesium dialkoxide soluble in an inert solvent, (b) a silicon compound having the hydrogen-silicon bond, and (c) an electron donor compound with one another in the presence of an inert solvent, and contacting the resulting reaction product with (d) a titanium compound.

Abstract: A catalyst component for polymerization of olefins which is prepared by reacting a magnesium alkoxide with a silicon compound having at least one hydrogen-silicon bond, contacting the reaction product with a carboxylic acid halide and/or carboxylic acid anhydride, and contacting the resulting contact product with a titanium compound.

Abstract: A block copolymer is disclosed which includes an ethylene-propylene copolymer segment (A) and a tetrahydrofuran segment (B). The weight ratio of (A) to (B) is 5/95 to 95/5, and the block copolymer has a number-average molecular weight of about 1,000 to about 1,000,000.

Abstract: A process for the surface treatment of carbon fiber tows each consisting of a multiplicity of filaments, comprises treating the tows by electrolytic oxidation, using each tow as a positive electrode and applying an electric current in the form of pulses. The pulse spacing is such that the electric supply and non-supply durations are 0.02-20 sec. each, preferably 0.1-5 seconds each. The pulse shape is rectangular, triangular, or sine waves. The applied voltage is 3-15 V and the current density 0.2-1000 A/m.sup.2, preferably 1-100 A/m.sup.2, more preferably 5-20 A/m.sup.2. The electrolyte is an aqueous solution of an oxidizing agent, strong acid or base, neutral salt, or weak acid or base.

Abstract: A novel styrene copolymer having a functional group, i.e. silyl group on the para-position of the aromatic ring, useful as a functional polymer, is provided. An effective process for the production thereof comprises contacting a random or block copolymer of p-methylstyrene and .alpha.-methylstyrene with an organolithium compound to lithiate partly the p-methyl group in the copolymer and then reacting the lithiated copolymer with a silicon compound represented by the general formula (R.sup.1)(R.sup.2)(R.sup.3)SiX wherein R.sup.1, R.sup.2 and R.sup.3 are, same or different, alkyl groups with 1 to 6 carbon atoms or alkenyl groups with 2 to 6 carbon atoms, at least one of R.sup.1, R.sup.2 and R.sup.3 being an alkenyl group, and X is a halogen atom.

Abstract: A novel block copolymer is disclosed which includes a random ethylene-propylene copolymer segment (A) and a methacrylate segment (B). The block copolymer has a number-average molecular weight of about 1,000 to about 600,000 and a ratio of (A) to (B) of 15/85 to 97/3 by weight.

Abstract: An ultrasonic injection nozzle includes an ultrasonic vibration generating device and a vibrating element. The vibrating element is connected to the vibration generating device so as to be vibrated thereby. The vibrating element has formed at its forward end an edged portion to and along which a liquid material is delivered to be atomized.