Abstract: A process for producing a catalyst carrier for an olefin polymerization comprising:(i) passing a mixture to be emulsified comprised of (A) a halogenated magnesium adduct and (B) a dispersion medium through an emulsifying apparatus comprised of (1) a conduit for passage of the mixture to be emulsified, (2) a vibrator element disposed in the conduit and vibrating in the axial direction of the conduit, and (3) a vibration device for giving the vibration movement to the vibrator element; and(ii) quenching the resultant mixture.

Abstract: A catalyst for olefin polymerization comprising: (A) a solid catalyst component comprising a titanium compound, a magnesium compound, and a halogen compound; (B) an organoaluminum compound; (C) a first organosilicon compound represented by formula (I): ##STR1## wherein R.sup.1 represents a hydrocarbon group having 1 to 4 carbon atoms; R.sup.2 represents a hydrocarbon group having 1 to 6 carbon atoms or a hydrogen atom; R.sup.3 and R.sup.4 each represent a hydrocarbon group having 1 to 6 carbon atoms; and R.sup.2, R.sup.3, and R.sup.4 may be the same or different; and (D) a second organosilicon compound represented by formula (II): ##STR2## wherein R.sup.5 represents a hydrocarbon group having 1 to 4 carbon atoms; and R.sup.6, R.sup.7, and R.sup.8, which may be the same or different, each represent a hydrocarbon group having 1 to 6 carbon atoms or a hydrogen atom.

Abstract: A hydrogen-absorbing alloy electrode for metal hydride alkaline batteries uses as hydrogen-absorbing material a powder of a rare earth element-nickel hydrogen-absorbing alloy obtained by pulverizing thin strips of said alloy prepared by single roll process and having an average thickness of 0.08 to 0.35 mm and a minimum size of crystal grains present in the roll-surface size of at least 0.2 .mu.m and a maximum size of crystal grains in the open-surface side of not more than 20 .mu.m. A process for producing the above electrode is also provided. The electrode can provide, when used as negative electrode, metal hydride alkaline batteries which are excellent in both high-rate discharge characteristics at an initial period of charge-discharge cycles and charge-discharge cycle characteristics.

Abstract: A hydrogen-absorbing alloy electrode for metal hydride alkaline batteries is obtained by coating or filling a collector with a hydrogen-absorbing alloy powder consisting essentially of spherical particles and/or nearly spherical particles and then sintering the powder, the powder having an average particle diameter of 30 to 70 .mu.m and containing 5 to 30% by volume of particles having a diameter of at least 2 times the average diameter and 10 to 40% by volume of particles having a diameter of not more than 1/2 of the average diameter. This electrode can give metal hydride alkaline batteries having excellent high-rate discharge characteristics and a long life.