Abstract: A catalyst useful for the polymerization of olefins, comprising the following components (A) and (B):Component (A): A transition metallic compound having the following formula [I]: ##STR1## wherein M: a transition metal selected from Ti, Zr and Hf; R.sup.1 : a monovalent C.sub.1-6 hydrocarbyl group, or a monovalent C.sub.1-6 hydrocarbyl group containing Si;R.sup.2 : a divalent C.sub.4-20 hydrocarbyl group, or a divalent C.sub.4-20 hydrocarbyl group containing Si;R.sup.3 : a divalent C.sub.1-30 hydrocarbyl group, or a divalent C.sub.1-30 hydrocarbyl group containing Si or Ge; andX and Y: H, halogen, a monovalent C.sub.1-20 hydrocarbyl group, or a monovalent C.sub.1-20 hydrocarbyl group containing N, O or Si.Component (B): Alumoxane having the following formula [II] or [III]: ##STR2## wherein m: 4 to 30; and R.sup.4 : a monovalent hydrocarbyl group. A highly stereoregular polyolefin having a high molecular weight can be obtained by the above catalyst.

Abstract: Disclosed is a resin molding comprising a molding composed of a resin composition comprising 100 parts by weight of a substrate resin comprising 100 to 30% by weight of at least one propylene polymer selected from the group consisting of propylene/ethylene block copolymers having an ethylene content of 3 to 45% by weight and propylene/ethylene random copolymers having an ethylene content of 0.5 to 10% by weight and 0 to 70% by weight of an elastomer, and at least one member selected from the group consisting of (A) 0.01 to 10 parts by weight of a 1,3-diene polymer having at least one terminal hydroxyl group or a hydrogenation product thereof, (B) 0.01 to 40 parts by weight of a copolymer of ethylene with an unsaturated compound containing a carboxyl group (including an acid anhydride group) and (C) 0.

Abstract: The present invention relates to a latent heat storage material composition comprising 65 to 85 wt % of sodium sulfate decahydrate, 1 to 20 wt % of ammonium chloride and 1 to 20 wt % of sodium bromide, and optionally 1 to 20 wt % of ammonium sulfate. The composition has a melting point of 5.degree. to 10.degree. C., has large latent heat at the melting point and exhibits excellent long-term performance.

Abstract: The present invention provides a method for economical recovery of ethylene from ethylene-containing vent gas from a plant for production of ethylene oxide, wherein ethylene is separated from saturated hydrocarbons such as methane, ethane and oxygen and then recovered efficiently. In this method, the vent gas is made to contact with molecular sieve carbon to selectively adsorb ethylene without substantial adsorption of the oxygen contained in the vent gas, the ethylene then being desorbed and recovered.

Abstract: A catalyst for the production of ethylene oxide which contains silver, tungsten, cesium and, in some cases, an alkaline metal other than cesium, an alkaline-earth metal, a rare-earth metal, and/or metal selected from Groups I B, II B, III B, IV A, IV B, V A, V B and VI A of the Periodic Table and tellurium. The use of the catalyst of this invention provides high selectivity in the production of ethylene oxide by the vapor contact oxidation of ethylene.

Abstract: A nonaqueous electrolyte secondary battery having excellent cycle life characteristic, stability in storage at high temperatures and low-temperature characteristic, which is provided with an anode including a carbon material capable of doping and undoping lithium ion, a nonaqueous electrolyte and a cathode including a lithium-containing oxide, the solvent for the nonaqueous electrolyte being a mixed solvent including an aliphatic carboxylate, a cyclic carbonate and a non-cyclic carbonate, with the aliphatic carboxylate being represented by the formula RCOOR' where R represents an alkyl group of three or more carbon atoms and R' represents an alkyl group of one or two carbon atoms and the cyclic carbonate being one of ethylene carbonate and propylene carbonate.

Abstract: The present invention provides a powder catalyst composition for producing by gas-phase polymerization olefin polymers having excellent polymer qualities and good particle properties in a high yield.The powder catalyst composition comprises fine particles of the following Component (B) coated with the following Component (A), and is characterized in that the ratio of the Component (A) to the Component (B) based on percent by weight ranges from 5:50 to 95:50: Component (A): an inorganic compound in the form of fine particles having an average particle diameter of 0,003-1 .mu.m and mainly comprising an inorganic oxide, and Component (B): a solution or dispersion in a hydrocarbon of the following Sub-components (i) and (ii): Sub-component (i): a compound of a transition metal belonging to the IVB group of the Periodic Table, and Sub-component (ii): an alumoxane, a Lewis acid, or an ionic compound which can convert the Sub-component (i) upon reaction therewith into a cation.

Abstract: A nonaqueous electrolyte secondary battery having excellent cycle life characteristic, stability in storage at high temperatures and low-temperature characteristic, which is provided with an anode including a carbon material capable of doping and undoping lithium ion, a nonaqueous electrolyte and a cathode including a lithium-containing oxide, the solvent for the nonaqueous electrolyte being a mixed solvent including an aliphatic carboxylate, a cyclic carbonate and a chain carbonate, with the aliphatic carboxylate being represented by the formula RCOOR' where R represents an ethyl group and R' represents an alkyl group of 1-3 carbon atoms and the cyclic carbonate being one of ethylene carbonate and propylene carbonate.

Abstract: A phenoxymethylpyrimidine derivative represented by the general formula (1) ##STR1## and a herbicide containing it as an effective ingredient. This compound has a high weed killing effect, a wide weed killing spectrum and high safety on crops, and is thus useful as a herbicide.whereinX denotes a halogen atom, a lower alkyl group, a lower alkoxy group, a lower acyloxy group or a nitro group,n denotes an integer of 0, 1 or 2,Y denotes a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a substituted lower alkyl group, a substituted lower alkenyl group, a substituted lower alkynyl group, an alkali metal atom, an alkaline earth metal atom or an ammonium cation optionally substituted by alkyl group(s), andR.sup.1 and R.sup.2 each independently denote a lower alkyl group.

Abstract: There are provided polypropylene resin expanded particles which have a uniform bubble size, can be molded with an exceptionally low steam pressure, and can produce an expanded molded product having a good surface appearance and an excellent energy absorption property. The present particles are polypropylene resin expanded particles containing as a base resin an isotactic polypropylene resin polymerized in the presence of a metallocene polymerization catalyst.

Abstract: The present invention relates to a latent heat storage material composition comprising 70 to 90 wt % of sodium sulfate decahydrate, 3 to 17 wt % of ammonium chloride, 1 to 13 w % of sodium chloride and 1 to 13 wt % of ammonium sulfate. The composition can be frozen with cooled water of 4.degree. to 5.degree. C., has a melting point of 10.degree. to 13.degree. C., has large latent heat at the melting point and exhibits excellent long-term performance.

Abstract: Disclosed is a catalyst component for the polymerization of olefins, which is a compound having the following structure: ##STR1## wherein R.sup.1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and R.sup.2 s are each a hydrogen atom, a halogen atom, a siloxy group, a lower-alkyl-substituted siloxy group or a hydrocarbon radical having 1 to 10 carbon atoms, or which is a reaction product of the following sub-components (i) and (ii):sub-component (i) which is a compound having the formulaR.sup.1 -B-(OH).sub.2in which R.sup.1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms; andsub-component (ii) which is an organoaluminum compound.

Abstract: Disclosed is a thermoplastic resin composition comprising:30 to 97% by weight of at least one of (a) a crystalline thermoplastic resin component and (b) a non-crystalline thermoplastic resin component, 3 to 70% by weight of (c) a rubbery polymer component which is ununiformly mixed with at least one of Component (a) and Component (b) and 0 to 40% by weight of (d) an inorganic filler,wherein Component (c) forms a network and at least one of the ratio of flexural modulus of Component (a) to Component (c) and that of Component (b) to Component (c) is 5 or more.

Abstract: An aminated polymer having excellent adhesion, printability, and compatibility in polymer blends or the like which are obtained by introducing an amino group, into an isotactic .alpha.-olefin polymer having an olefinic unsaturated bond at its terminus is disclosed. The terminal unsaturated isotactic or syndiotactic .alpha.-olefin polymer is obtained by polymerizing an .alpha.-olefin with a catalyst comprising the combination of a metallocene compound and an alumoxane, and the amino group is obtained by the amination of the terminal unsaturated group, by the addition of a compound containing the corresponding functional group to the unsaturated bond, or by the conversion of a precursor polymer containing a precursor of the functional group into a polymer containing the functional group desired.

Abstract: A hollow multi-layer molding made of a multi-layer laminate material, the multi-layer laminate material having: a polyethylene layer; a barrier layer made of a substance selected from the group consisting of polyamide resins, saponified derivatives of ethylene-vinyl acetate copolymers, thermoplastic polyesters, and a mixture of at least two of the polyamide resin, the saponified derivative and the thermoplastic polyesters; and an adhesive layer made of a modified polyolefin resin, the polyethylene layer and the barrier layer being laminated to each other with the adhesive layer sandwiched therebetween. The polyethylene layer is made of a high-molecular-weight polyethylene which is obtained by using a specific chrome catalyst and a reducing agent, and which has a high-load melt flow rate (at a temperature of 190.degree. C. under a load of 21.6 kg) of 1 to 10 g/10 min., and a density of not less than 0.935 g/cm.sup.3.

Abstract: An electrophotographic photoreceptor comprising a conductive substrate having thereon a photosensitive layer comprising a binder resin having dispersed therein a phthalocyanine composition is disclosed, in which said binder resin is a curing fluorine resin, and said phthalocyanine composition comprises (A) an unsubstituted phthalocyanine compound and (B) a phthalocyanine derivative having a halogen atom(s) and/or electron attractive group(s) at the benzene nuclei, such that the ratio of the number of the halogen atom(s) and/or electron attractive group(s) to the total number of the phthalocyanine units in (A) and (B) is from 0.001 to 0.5. The photoreceptor has a low threshold value of photosensitive characteristics and exhibits high sensitivity in a digital behavior. Besides applicable to a digital recording system, the photoreceptor, when applied to a conventional PPC system, provides a sharp-edged high quality image.

Abstract: A process for producing 2,6-naphthalenedicarboxylic acid by oxidizing 2,6-dimethylnaphthalene by molecular oxygen in the presence of a catalyst including cobalt, manganese and bromine. The oxidation reaction is performed by using a 2,6-dialkylnaphthalene mixture of 2,6-dimethynaphthalene and a small amount of 2,6-diisopropylnaphthalene as a raw material. Thus, the desired 2,6-naphthalenedicarboxylic acid can be produced at a high yield.

Abstract: There is provided a biaxially-oriented multi-layer film comprising:a substrate layer comprising as a main component a crystalline propylene polymer; anda layer of a composition laminated on at least one surface of the substrate layer, the composition comprising the following components A, B and C:component A: 100 parts by weight of a propylene random copolymer,component B: 0.05 to 0.6 parts by weight of inorganic or organic fine particles having an average particle diameter of 0.5 to 5 .mu.m, andcomponent C: 0.5 to 10 parts by weight of a polypropylene modified with an acid, having a number-average molecular weight of 800 to 20,000.

Abstract: A process for producing a highly water absorptive polymer, including the step of polymerizing an acrylic monomer including as the main component acrylic acid and/or an alkali metal salt thereof in the presence of a salt of a metal selected from the,group consisting of Fe(II), Fe(III), Cu(II), Mn(II), VO(II), Co(II) and Ni(II).

Abstract: 1,3-Oxazin-4-one derivatives represented by general formula (I) ##STR1## wherein R.sup.1 is a lower alkyl group, a lower alkenyl group, an aryl group which may be substituted, or an aralkyl group which may be substituted;R.sup.2 is a hydrogen atom or a lower alkyl group;R.sup.3 is a lower alkyl group, an aryl group which may be substituted, or an aralkyl group which may be substituted; andR.sup.4 and R.sup.5, independently, each is a lower alkyl group, or R.sup.4 and R.sup.5, taken together with the carbon atom to which they are bonded, combine to form a 3- to 8-membered carbocyclic group which may have a branch of a lower alkyl group. These compounds have broad herbicidal spectra and potent herbicidal activities and in addition high safety to useful crops, so that they are useful as herbicides.