Abstract: A butadiene polymer (i) having a cis bond unit content of at least 50% based on the total butadiene units, a number average molecular weight (Mn) of 1,000 to 10,000,000, and at least 80%, based on the total molecular chains, of living chains containing a transition metal of group IV of the Periodic table at a terminal thereof; a polymer (ii) obtained by modifying terminals of the polymer (i); and a polymer (iii) obtained by coupling the polymers (i). These polymers (i), (ii) and (iii) are obtained by polymerizing a conjugated diene monomer alone or with a copolymerizable monomer at a specific temperature in the presence of a catalyst comprising a compound (A) of a transition metal of group IV of the periodic table having a cyclopentadienyl structure and a co-catalyst (B) selected from organoaluminum-oxy compound (a) and others and optionally further by contacting the resultant polymer with a terminal modifier or a coupling agent.
Type:
Grant
Filed:
June 18, 2001
Date of Patent:
November 25, 2003
Assignees:
Japan as Represented by Director General of the Agency of
Industrial Science and Technology, Japan Chemical Innovation Institute
Abstract: A process for producing oxidative cross-linked polyarylene sulfide using a reaction apparatus including a reaction vessel provided with a resin inlet, a gas inlet, a resin outlet, and a gas outlet, and a transverse type heating member having a helical structure which is rotatable around a central shaft disposed in the reaction vessel. The process includes the step of supplying heated oxygen containing gas to the polyarylene sulfide from the downward direction of the transverse type heating member while the polyarylene sulfide is heated and agitated by the rotation of the transverse type heating member to carry out an oxidative cross-linking reaction of the polyarylene sulfide. According to the process, it becomes possible to increase the productivity and the gas components present in polyarylene sulfide can be effectively removed when the melt viscosity of polyarylene sulfide is increased to a desired degree after polymerizing the polyarylene sulfide.
Abstract: The present invention provides a carrier for electrophotography, which is capable of charging the toner in the developer very rapidly to a target electrostatic charge and at the same time, is capable of maintaining the target electrostatic charge during printing, so that the chemical fogging related to the slow charging rate can be eliminated and the image density related to the maintenance of the electrostatic charge can be preserved during printing. The charging rate and the charge maintenance of the electrophotographic carrier can be preserved if the carrier composed of magnetic core particles and the resin coat satisfies the following equation (B)>[(−19.4)×(A)+31], wherein (A) represents a carbon content (weight %) of the carrier and (B) represents a ratio of the square root of the number of emitted photoelectrons ((CPS)½) and the photon energy (eV).
Abstract: A zirconium system amorphous alloy having a composition expressed by a general formula Zr100-X-Y-a-b Tix Aly Cua Nib wherein a, b, X, and Y in the formula represent atomic percentage, and fulfill X<10, Y>5, Y<−(1/2)X+35/2, 15≦a≦25, and 5≦b≦15, the zirconium system amorphous alloy has an amorphous phase of more than 50 volume % of the alloy.
Abstract: A method for clean processing wherein an object and a high pressure nozzle are disposed a specific distance apart from each other inside a washing tank containing only ultra-pure water, an ion exchange material or catalyst material that increases the amount of hydroxide ions is provided between the processing surface of said workpiece and the distal end of the high pressure nozzle facing said surface, a voltage is applied using the high pressure nozzle as the cathode and the object as the anode and the hydroxide ions produced from the ultra-pure water are supplied to the surface of the object.
Type:
Grant
Filed:
June 6, 2001
Date of Patent:
November 25, 2003
Assignee:
Japan Science and Technology Corporation
Abstract: A polymer dispersion composition obtained by dispersing an electrode active material and a polymer having a gel content of 50% or more in an organic dispersion medium of which boiling point at 760 mmHg is 80° C. or above. The composition is successfully usable as, for instance, a binder composition for batteries, and the battery produced therefrom is high in initial capacity and small in the drop of capacity.
Abstract: An oil treating agent of W/O emulsion, wherein an aqueous dispersed phase is dispersed in an oily continuous phase, and wherein the dispersed phase is an alkaline mixture solution obtained by mixing water, a solution comprising water and an alcohol, or a water-free alcohol solution with an alkali hydroxide e.g. sodium hydroxide or with a metal alkoxide e.g. sodium alkoxide and the continuous phase comprises a liquid incompatible with the dispersed phase.
Abstract: The development of a substitutable refrigerant composition that enables a conventional refrigerating circuit to maintain its performance without changing the circuit configuration has been demanded. An object of the present invention is to provide such a refrigerant composition and a refrigerating circuit using it. A refrigerant composition of the present invention is characterized by comprising R600 (n-butane: CH3CH2CH2CH3), R125 (CHF2CF3), R508A (R23/R116: 39/61), and R14 (tetrafluoromethane: CF4).
Abstract: An oil application roller has a core shaft and an oil retention/supply layer formed to cover the outer peripheral surface of the core shaft. The oil retention/supply layer includes a porous elastic material which exhibits no substantial swelling against an offset-preventing oil used, and is impregnated with a mixture containing an offset-preventing oil and a curable oil-retention material. The curable oil-retention material is cured.
Abstract: A composition comprising at least 60% by weight, based on the weight of the composition, of a cyclopentanone or cyclopentanol compound having 2,5-dicyclopentylidene substituents, 2,5-dicyclopentyl substituents or 2-cyclopentylidene-5-cyclopentyl substituents. This composition is useful as perfume emitting floral fragrance. 2,5-Dicyclopentylidenecyclopentane (compound 4) is prepared by reaction of 2-cyclopentylidenecyclopentanone with cyclopentanone. 2,5-Dicyclopentylcyclopentanone (compound 5) and 2,5-dicyclopentylidenecyclopentanol (compound 6) are prepared by reduction of compound 4. 2,5-Dicyclopentylcyclopentanol (compound 7) is prepared by reduction of compound 5 or compound 6.
Abstract: A digital modulation method in which at a head of an input block (pre-translation), each of a plurality of different types of initial data of t bits is multiplexed to generate a plurality of different types of multiplexed blocks, t bits at the head and immediately following t bits of each of the multiplexed blocks are subjected to exclusive OR operation, the immediately following t bits are replaced by the result of operation, the replaced t bits and the immediately following t bits are subjected to an exclusive OR operation, and the immediately following t bits are replaced by the result of operation, and thereafter in the similar manner, a convolution operation is executed. A plurality of different types of translated blocks are produced by the convolution operation, and DC components of thus provided translated blocks are calculated, respectively, absolute values of the respective DC components are compared with each other, and a translated block having the minimum value is selected and output externally.
Abstract: At least one annular wall 6 into which a ferrule 5 for an optical fiber cable 30 is adapted to be inserted is provided in the housing 4 and exposed to the exterior. A protective frame wall 7 is provided on the housing 4 so as to project higher than the annular wall 6. The frame wall 7 is so arranged as to surround the annular wall 6, and projected upwardly and downwardly from both top and bottom sides of the housing 4. A top wall 9 for mounting a ferrule locking member 10 is formed integrally with the annular wall 6, and the top wall is positioned at the same height as the frame wall 7, and continued from the frame wall. There may be arranged a pair of the annular walls in parallel in proximity to each other. A receiving trunk 53 in a mating housing 48 continued to a light converting element 55 is adapted to be inserted into the annular wall 6, and the ferrule 5 is adapted to be inserted into the receiving trunk.
Abstract: A quantitatively extrusion supplying method of continuously supplying synthetic resin fine particulate matters by the action of ultraviolet vibration, wherein the fine particulate matters are composed of columnar or square column-form small pellets, in which when the longitudinal length, the width, and the height thereof on the three-dimensional rectangular coordinate are x, y, and z respectively, the sum of x, y, and z is in the range of from 0.9 to 4.6 mm, and each value of x, y, and z is at least 20% of the sum x, y, and z. By the method, even the resin fine particulate matters having a diameter of 500 &mgr;m or larger can be stably and continuously supplied in a short time without need of a labor and time for cleaning a ultraviolet feeder at changing the material to be conveyed.
Abstract: Using a polymerization catalyst comprising as a main ingredient a metal compound containing a transition metal of group 6 of the periodic table and having at least one imide group and at least two substituent (A) selected from the group consisting of an alkoxy group, an aryloxy group, an alkylamide group and an arylamide group, a polycyclic norbornene monomer is polymerized to give a ring-opened norbornene polymer having a weight average molecular weight of 500 to 1,000,000 as expressed in terms of polystyrene and a melting point of 140° C. or higher. This polymer is hydrogenated to give a hydrogenated product having a melting point of 140° C. or higher.
Abstract: A water absorbent material, comprising, as a main component, a water absorbent resin which has a structure in which a anhydropolyamino acid having an ethylenically unsaturated double bond is grafted with polysaccharides, wherein at least a portion of the anhydropolyamino acid is hydrolyzed and crosslinked, has high water absorbency and high biodegradability even if the anhydropolyamino acid has a low molecular weight.
Abstract: A vehicle-use head-up display system is provided, which has: a luminous display unit to display an image including information about a vehicle; a reflecting means to reflect light of the display-image of the luminous display unit; a translucent reflecting means arranged on a windshield ahead of a driver's seat, reflecting the light of the display-image from the reflecting means, and having a driver look at a virtual image on the windshield; a moving means to linearly move the reflecting means in a back-and-forth direction of the vehicle; and a display-image moving means to upwardly move the display-image of the luminous display unit in accordance with a backward movement of the reflecting means by the moving means and to downwardly move the display-image of the luminous display unit in accordance with a forward movement of the reflecting means by the moving means, wherein a display position is adjusted such that a depression angle does not change when an eye point in an eye range changes.
Abstract: A sheet-like photocurable resin compound can secure or control a sufficient application time outdoors where the compound is irradiated with natural light and can suppress volatilization of a styrene monomer. This sheet-like photocurable resin compound comprises a photocurable resin compound (i) containing as an essential component at least one unsaturated resin (A) selected from the group consisting of unsaturated polyester resin, vinyl ester resin, vinyl urethane resin, and acrylic resin, a photopolymerization initiator (B) which is not activated by irradiation with light with a wavelength of 420 nm or above, and a thickener (C) containing a thermnoplastic resin powder as an active component; and a see-through light absorbing film (ii) whose transmittance to light with a wavelength of 420 nm or below is 10% or less; said photocurable resin compound being covered with said see-through absorbing film.
Abstract: A detergent composition that contains inorganic powder and a soap such as a soda soap, wherein the inorganic powder is zeolite powder, calcium carbonate powder, silica powder, ceramic powder, alga fossil powder, seashell powder or the like, and pineapple enzymes are fixed thereto by adding pineapple juice thereto and fermenting. This detergent composition does not cause water pollution like synthetic detergents do, thus enabling water pollution caused by wastewater from cleaning to be prevented. Moreover, due to the positive water-cleaning action of the pineapple enzymes, the detergent composition cleans the insides of drainage pipes, purifier tanks and the like, thus improving the functions thereof. Water pollution can thus be ameliorated.
Abstract: In a disk device, a focus servo activating circuit causes an RF amplifier 3 to amplify a focus error signal within a predetermined gain adjusting range, causes a control circuit 4 to multiply the amplitude of the focus error signal obtained by the RF amplifier 3 by two coefficients to calculate two threshold values, and starts up a focus servo upon the amplified focus error signal passing the two threshold values. The focus servo can be started up normally even for optical disks of extremely low reflectivity.
Type:
Grant
Filed:
September 28, 2001
Date of Patent:
November 25, 2003
Assignees:
Sanyo Electric Co., Ltd., Sanyo Technosound Co., Ltd.
Abstract: The present invention provides a method for forming a topcoat according to a 2-coat 1-bake system comprising the steps of applying to a substrate a thermosetting aqueous colored base coating composition, applying to the uncured surface of the base coat a clear coating composition, and curing the two coats by heating, wherein the clear coating composition is a thermosetting powder coating composition comprising: (A) an epoxy-containing resin; and (B) a curing agent containing acid anhydride (a) represented by formula
X—COO—[CO—(CH2)m—COO]n—CO—X (1)
and at least one species selected from the group consisting of acid anhydride (b) represented by the formula
HO—[CO—(CH2)p—COO]q—H (2)
and dibasic acid (c).