Abstract: A method for editing a machining program includes obtaining tool information specifying a tool mountable on a machine tool. A program editing window and at least one assistance window are displayed. The program editing window shows a program code of the machining program to control the machine tool. Each of the assistance window selectively shows the tool information and a control method. The tool is to be controlled according to the control method. In the program code, an insertion position at which a new code is to be inserted into the program code is specified. Selected information is selected from the tool information when the tool information is shown in the at least one assistance window. A command corresponding to the selected information is inserted into the program code at the insertion position.

Abstract: An electric heating device suitable for heating an electric vehicle and having a novel structure is provided. The electric heating device includes: an electric motor that includes a stator having a plurality of stator coils arranged along the circumferential direction to generate a rotating magnetic field and a disk-shaped rotor that includes a plurality of one-turn coils disposed correspondingly to the stator coils and a soft magnetic metal plate supporting the one-turn coils; and a fan secured to the soft magnetic metal plate on a side thereof opposite from the one-turn coils and including a vane wheel that has a plurality of vanes and rotates integrally with the rotor.

Abstract: A method for producing an olefin polymer, characterized in that an olefin is homopolymerized or copolymerized in the presence of a catalyst for olefin polymerization, having the following (A) and (C) as catalyst components, or a catalyst for olefin polymerization, having the following (A), (B) and (C) as catalyst components: (A) a transition metal complex dissolved, suspended or slurried in an aliphatic hydrocarbon compound; (B) an organoaluminum compound or aluminoxane selected from compounds (B1) to (B3) dissolved, suspended or slurried in an aliphatic hydrocarbon compound; and (C) at least one boron compound selected from compounds (C1) to (C3) suspended or slurried in an aliphatic hydrocarbon compound.

Abstract: A method for feeding a boron compound, which comprises feeding at least one boron compound selected from (1) to (3) described below in the state suspended or slurried in a solvent continuously to a reactor; a boron compound in the form of fine particles being one or more boron compounds selected from (1) to (3) described below and having a maximum particle diameter of 50 &mgr;m or less; a catalyst component for olefin polymerization consisting of said boron compound in the form of fine particles; a method for producing a boron compound in the form of fine particles which comprises dissolving one or more boron compounds selected from (1) to (3) described below in an aromatic hydrocarbon solvent and then precipitating in an aliphatic hydrocarbon solvent; and a method for producing a boron compound in the form of fine particles which comprises pulverizing one or more boron compounds selected from (1) to (3) described below so that their maximum particle diameter is 50 &mgr;m or less.

Abstract: A specified transition metal compound having two transition metals and two cyclopentadiene type anion skeletons in its molecule and said metals are linked through an atom of Group XVI of the Periodic Table of the Elements, an olefin polymerization catalyst component comprising said transition metal compound, an olefin polymerization catalyst comprising said transition metal compound, a specific organoaluminum compound, and a specific boron compound, and a process for producing an olefin polymer using said olefin polymerization catalyst.

Abstract: Modified particles obtained by contacting dry particles(a) with an organometallic compound(b), and subsequently a compound(c) having a functional group containing active hydrogen or a non-proton donative Lewis basic functional group and an electron attractive group; a carrier comprising said particles; a catalyst component for olefin polymerization comprising said particles; a catalyst for olefin polymerization comprising said particles(A) and a transition metal compound(B), or an additional organometallic compound (C) therewith; and a method for producing an olefin polymer with said catalyst for olefin polymerization. According to the present invention, there is provided a catalyst for polymerizing an olefin giving an olefin polymer excellent in particle properties with a high activity when applied to a slurry polymerization or gas phase polymerization, and a method for producing a olefin polymer using said catalyst.

Abstract: Described are an aluminum compound-containing solid catalyst component obtained by bringing a carrier into contact with an organoaluminumoxy compound, followed by bringing this product into contact with a compound having an electron attractive group; a transition metal-containing solid catalyst component obtained by bringing the aluminum compound-containing solid catalyst component into contact with a transition metal compound; a catalyst for olefin polymerization, constituting the aluminum compound-containing solid catalyst component and an organoaluminum compound; and a method for producing an olefin polymer, which includes polymerizing or copolymerizing an olefin using the catalyst for olefin polymerization.

Abstract: The present invention relates to a transition metal complex, a process for producing the same, a polymerization catalsyt containing the transition metal complex and a process for producing polymers which uses the catalysts.

Abstract: Modified particles obtained by a process comprising contacting water-containing particles(a), an organometallic compound(b) and a compound(c) having a functional group containing active hydrogen or a non-proton donative Lewis basic functional group, and having an electron attractive group; a carrier of said particles; a catalyst component for olefin polymerization of said particles; a catalyst for olefin polymerization comprising said particles(A) and a transition metal compound(B), and optionally, an organometallic compound (C); and a method for producing an olefin polymer with said catalyst for olefin polymerization.

Abstract: A method for producing an olefin polymer, characterized in that an olefin is homopolymerized or copolymerized in the presence of a catalyst for olefin polymerization, comprising the following (A) and (C) as catalyst components, or a catalyst for olefin polymerization, comprising the following (A), (B) and (C) as catalyst components:

Abstract: A specified transition metal compound having two transition metals and two cyclopentadiene type anion skeletone in tis molecule and said metals are linked through an atom of Group XVI of the Periodic Table of the Elements, and olefin polymerization catalyst component comprising said transition metal compound, an olefin polymerization catalyst comprising said transition metal compound, a specific organoaluminum compound, and a specific boron compound, and a process for producing an olefin polymer using said olefin polymerization catalyst.

Abstract: A specified transition metal compound having two transition metals and two cyclopentadiene type anion skeletons in its molecule and said metals are linked through an atom of Group XVI of the Periodic Table of the Elements, an olefin polymerization catalyst component comprising said transition metal compound, an olefin polymerization catalyst comprising said transition metal compound, a specific organoaluminum compound, and a specific boron compound, and a process for producing an olefin polymer using said olefin polymerization catalyst.

Abstract: An olefin polymer characterized by having (A) a density of from 0.850 to 0.940 g/cm3, (B) a melt flow rate (MFR) of from 0.1 to 200 g/10 minutes, and (C) a relation between the melt flow rate (MFR) and an intrinsic viscosity [&eegr;] measured in tetralin at 135° C. satisfying the range of the following equation (1): −4.04 log [&eegr;]+0.6≦log MFR≦−4.04 log [&eegr;]+0.96  (1) and its a film or sheet, and a method for producing an olefin polymer characterized by homopolymerizing an olefin or copolymerizing two or more olefins, with a catalyst for olefin polymerization, comprising: (A) a transition metal complex represented by the general formula [I] below; (B) at least one aluminum compound selected from (B1) to (B3); and/or (C) at least one boron compound selected from (C1) to (C3), at a temperature of at least 130° C. under a pressure of at least 300 kg/cm2G.

Abstract: Described are an aluminum compound-containing solid catalyst component obtained by bringing a carrier into contact with an organoaluminumoxy compound, followed by bringing this product into contact with a compound having an electron attractive group; a transition metal-containing solid catalyst component obtained by bringing the aluminum compound-containing solid catalyst component into contact with a transition metal compound; a catalyst for olefin polymerization, constituting the aluminum compound-containing solid catalyst component and an organoaluminum compound; and a method for producing an olefin polymer, which includes polymerizing or copolymerizing an olefim using the catalyst for olefin polymerization.

Abstract: A transition metal complex represented by the formula [1] ##STR1## wherein M is a transition metal atom of the group 4 of the periodic table of elements; Cp is a group having a cyclopentadiene type anionic skeleton; A and G are each a divalent residue containing an atom of the group 15 or 16 of the periodic table of elements and may be the same with or different from each other; X.sup.1, X.sup.2, R.sup.1, R.sup.2, R.sup.3 and R.sup.

Abstract: An olefin polymerization catalyst component is represented by the general formula (1): ##STR1## wherein M is a transition metal of the 4.sup.th Group or the Lanthanide Series in the Periodic Table; each of A and A' is the same or different and is a hydrocarbon or halogenated hydrocarbon having 1 to 50 carbon atoms, or a hydrocarbon or halogenated hydrocarbon group having 1 to 50 carbon atoms and a substituent containing an oxygen atom; E is a residual group of an element of the 13th to 15th Groups capable of forming three bonds; each of R and R' is the same or different and is a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms; R" represents a hydrocarbon or halogenated hydrocarbon group containing at least one hetero atom and having 1 to 20 carbon atoms. This component is used in a catalyst along with an aluminum or born-containing cocatalyst to produce an olefin polymer or copolymer.

Abstract: An olefin polymerization catalyst component is represented by the general formula (1); ##STR1## wherein M is titanium, zirconium or hafnium; each of A and A' is the same or different and is a hydrocarbon or halogenated hydrocarbon having 1 to 50 carbon atoms, or a hydrocarbon or halogenated hydrocarbon group having 1 to 50 carbon atoms and a substituent containing an oxygen atom; E is a residual group of an element of the 13th to 15th Groups capable of forming three bonds; each of R and R' is the same or different and is a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms; R" represents a hydrocarbon or halogenated hydrocarbon group containing at least one hetero atom and having 1 to 20 carbon atoms. This component is used in a catalyst to produce an olefin polymer.

Abstract: Disclosed is a process for producing aragonite crystal form calcium carbonate with an acicular shape characterized by premixing aragonite crystal calcium carbonate and Ca(OH).sub.2 to prepare an aqueous slurry, adding a water-soluble phosphoric acid compound into the aqueous slurry, and introducing CO.sub.2 gas into the aqueous slurry to cause the carbonation reaction to take place. According to the present invention, aragonite crystal form calcium carbonate in an acicular shape with a large particle size is produced.