Abstract: A novel bis-urea compound, preparation process of the compound, and preparation process of 1,3-dialkyl-2-imidazolidinone are disclosed and the disclosure provides a novel preparation process of 1,3-dialkyl-2-imidazolidinone and simultaneously enables effective utilization of N,N',N"-trialkyldiethylentriamine which lacks a large amount use and is desired to develop new application.

Abstract: An ethylene copolymer composition comprising an ethylene/.alpha.-olefin copolymer [A-I] which has a density, a melt flow rate (MFR), an amount of a n-decane-soluble portion in the specific ranges and whose melt tension (MT) at 190.degree. C. and MFR satisfy the relation MT>2.2.times.MFR.sup.-0.84 and one (co)polymer selected from the group consisting of [B-1] a low-density polyethylene obtained by high-pressure radical polymerization, [B-2] a crystalline polyolefin and [B-3] an olefin type elastomer. Also disclosed is an ethylene copolymer composition comprising an ethylene/.alpha.-olefin copolymer composition and the low-density polyethylene [B-1] obtained by high-pressure radical polymerization, said ethylene/.alpha.-olefin copolymer composition comprising ethylene/.alpha.-olefin copolymers [A-2] and [A-3] both having physical properties similar to those of the above ethylene/.alpha.-olefin copolymer [A-1] and having intrinsic viscosities different from each other.

Abstract: A holding container which is made of a polyether ether ketone resin and is suitable for use in holding one or more substrates upon fabrication of the corresponding number of thin-film semiconductor substrates useful in driving a planar display, for example, a liquid crystal display.

Abstract: One aspect of the present invention relates to a process for preparing plastic lenses having a high-refractive index comprising forming a mixture containing one or more polyisocyanate compounds; one or more active hydrogen compounds selected from the group consisting of a polyol compound having no sulfur atom, a polyol compound having at least one sulfur atom, and a polythiol compound having at least one sulfur atom in addition to the sulfur atom contained in mercapto group and at least one internal releasing agent and then casting and polymerizing the mixture.

Abstract: A molded article of a syndiotactic polypropylene having excellent transparency in which a melting point attributed to the polypropylene having the syndiotactic structure measured at a heating rate of 10.degree. C./minute by differential scanning thermal analysis is represented by a substantially single peak, the aforesaid molded article being prepared by heating, melting and then hot-molding a homopolymer of propylene or a copolymer of propylene and a small amount of another olefin, which have a substantially syndiotactic structure, or a mixture of the homopolymer or the copolymer and a small amount of a polypropylene having a substantially isotactic structure, followed by quenching, or, after these steps, additionally subjecting the above molded article to a heat treatment at a temperature of less than its melting point. A method for preparing the above molded article is also disclosed here.

Abstract: Disclosed herein is a crystallization apparatus for use in the crystallization of L-.alpha.-aspartyl-L-phenylalanine methyl ester. The stirring blade of the crystallization apparatus is composed of a band plate member for sweeping the bottom of a vessel and rod- or band plate-members arranged thereon and extending substantially vertically and horizontally.

Abstract: The polypropylene composition of the present invention comprises polypropylene and a rubber component, and has the following characteristics that(i) the melt flow rate (MFR: 230.degree. C., 2.16 kg load), as measured in accordance with ASTM D1238, is not less than 8 g/10 min,(ii) the flexural modulus (FM), as measured in accordance with ASTM D790, is not less than 20,000 kg/cm.sup.2,(iii) the Izod impact strength (IZ), as measured in accordance with ASTM D256, is not less than 20 kg.cm/cm,(iv) the heat deflection temperature (HDT), as measured in accordance with ASTM D648, is not lower than 135.degree. C.

Abstract: A remote control transmitter used for a switching of a state of a door lock device between a locked state and an unlocked state and so on comprises a portable-size case, operating buttons provided on an outer surface of the case, a secondary battery provided within the case, a solar battery provided on the outer surface of the case and rechargeably connected to the secondary battery, and a generator for generating a coded signal. One terminal of each operating button is connected to a positive terminal of the secondary battery and the other terminal is connected to a positive terminal of the generator. When one of the operating buttons is pushed, electric current is fed from the secondary battery to the generator.

Abstract: The liquid crystal light modulation device of the present invention comprising a liquid crystal element consisting of one of plural liquid crystal cells and a voltage signal input means electrically connected with the liquid crystal element, wherein each liquid crystal cell contains a chiral smectic liquid crystal material layer and when a voltage signal is input to the liquid crystal element, the polarization direction of a light transmitted by the liquid crystal element is changed by approx. 90.degree. as compared with the state where the voltage signal is not input to the liquid crystal element enables a change of a light path and an open-close (on-off) operation of a light path at a high speed (optical switching time: not longer than 1 msec).

Abstract: The present invention provides a water-resistant surface coating formulation comprising a reaction product obtained by subjecting an acrylamide polymer to a crosslinking reaction with 0.1 to 20 parts by mole, per 100 parts by mole of amido groups in the acrylamide polymer, of a glyoxalmonoureine; a method for improving the water resistance of paper by using the formulation; and coated paper so obtained. As a result of improved water resistance of the coating formulation, this invention makes it possible to conduct coating work stably.

Abstract: The present invention provides a desulfurization and denitrification process by dry process, whereby a stable operation is rendered possible at a temperature of 100.degree. to 200.degree. C. with a high energy efficiency and without deterioration of a catalyst for a long time and any problem on by produced N.sub.2 O. This process comprises treating a waste gas containing SOx and NOx with catalyst-poisoning materials in an apparatus for mainly effecting desulfurization and then in an apparatus for mainly effecting denitrification, characterized by passing the waste gas through a desulfurization apparatus of moving bed type, in which a carbonaceous adsorbent is moved downward at a temperature of 100.degree. to 200.degree. C., adding ammonia to the waste gas at a temperature of 100.degree. to 200.degree. C., leaving the desulfurization apparatus, and then passing the waste gas through the low temperature denitrification apparatus, in which a catalyst of TiO.sub.2 -V.sub.2 O.sub.

Abstract: The cycloolefin resin compositions of the present invention comprise:[A] cycloolefin resin selected from (a-1) a cycloolefin random copolymer having recurring units derived from a cycloolefin of a specific structure, (a-2) a ring opening (co)polymer of the cycloolefin, (a-3) a hydrogenation product of the ring opening (co)polymer and (a-4) a graft-modified product of the random copolymer (a-1), the ring opening (co)polymer (a-2) and the hydrogenation product thereof (a-3);[B] at least one of (b-1) an unmodified elastomer, (b-2) a modified elastomer, (b-3) an unmodified crystalline polyolefin and (b-4) a modified crystalline polyolefin; and[C] a polyamide resin. Molded products formed from these cycloolefin resin compositions are excellent particularly in resistance to greases.

Abstract: A vehicle door locking device comprises a first locking lever connected to an inside lock button for changing over the locking device to the lock state or unlock state, a second locking lever connected to a key cylinder and an actuator which has a roughly enclosed housing, a motor accommodated in the housing, a first shaft connected to the first locking lever and a second shaft connected to the second locking lever. A first switch mechanism for detecting the position of the first locking lever and a second switch mechanism for detecting the position of the second locking lever are provided in the housing.

Abstract: As improved process for producing an olefin polymer or copolymer by using a novel catalyst composition composed of (A) a titanium catalyst component containing magnesium, titanium, halogen and an ester specified in claim 1, as an electron donor, (B) an organoaluminum compound and (C) a heterocyclic compound or a ketone specified in claim 1, as a third component. The combination parameter of the ester in (A) and the (C) component is new, and the process can give a highly stereospecific olefin polymer or copolymer in high yields.

Abstract: Herein disclosed is a method for preparing electrically-conductive needle-like zinc oxide which comprises the steps of preparing a vapor mixture by admixing zinc vapor and vapor of at least one compound selected from the group consisting of dopant-forming compounds having boiling points of not more than the boiling point of zinc and free of oxygen atom in an amount of 0.005 to 5 parts by weight, as expressed in terms of the oxide of the dopant-forming metal, per 100 parts by weight of the zinc vapor as expressed in terms of zinc oxide; and passing the vapor mixture through an oxidation chamber while blowing an oxidizing gas into the vapor mixture through at least two nozzles spaced apart from one another and arranged along the flow path of the vapor mixture to thus stepwise oxidize the vapor mixture.

Abstract: Near-infrared absorbers which contain phthalocyanine derivatives in which the four benzene rings contained in the molecule independently have 1 to 4 substituents are light and thermal resistant and possess high molar extinction coefficients. Such near-infrared absorbers are useful in optical recording media, near-infrared absorption filters, and liquid crystal display devices.

Abstract: A novel bis-urea compound, preparation process of the compound, and preparation process of 1,3-dialkyl-2-imidazolidinone are disclosed and the disclosure provides a novel preparation process of 1,3-dialkyl-2-imidazolidinone and simultaneously enables effective utilization of N,N',N"-trialkyldiethylentriamine which lacks a large amount use and is desired to develop new application.

Abstract: A hold-transfer system for extraction containers has a main body and a cassette detachable from the main body. The cassette has holding devices for holding extraction containers in an upright position, an endless traveling member carrying the holding devices arranged in a row, and a driving rotor and a driven rotor engaging the endless traveling member about perimeters thereof. The endless traveling member has rotatable support member for rotatably supporting the holding devices with lower portions of the holding devices protruding below the rotatable support members and accessible from beneath the cassette. The main body has a driving motor for driving the driving rotor and an identifying device, installed at a reading position relative to a specified position for an extraction, for identifying an identification mark associated with one of the extraction containers.

Abstract: In a process for thermally cracking a low-quality feed stock containing a considerable proportion of heavy fractions such as high-boiling fractions, and evaporation residual oil, and a system used therefor, in which the low-quality feed stock is withdrawn from the preheater of the thermal cracking furnace to separate and remove a required proportion of said heavy fractions and thereafter returned to subject the feed stock to further preheating and thermal cracking. The low-quality feed stock thermally cracked has a predetermined proportion of the heavy fractions removed, and coking in the thermal cracking system at various lines is avoided from occurring.

Abstract: A polyimide resin composition comprising 50-95 parts by weight of a polyimide resin represented by the following formula (1): ##STR1## wherein X represents a direct bond, a hydrocarbon group, a carbonyl group, a thio group or so, Y.sub.1 -Y.sub.4 individually represent a hydrogen atom, a lower alkyl group or so and R.sub.1 represents an aliphatic group, an aromatic group or so; and 50-5 parts by weight of a polyetheretherketone, said composition having been subjected to heat treatment at 250.degree.-330.degree. C. and, after the heat-treatment, having crystallization enthalpy of 0-6 cal/g.The heat treatment of the polyimide resin composition can be effected at a low temperature in a short time. The polyimide resin composition has excellent dimensional stability and high-temperature physical properties. Moreover, it has excellent moldability and peeling resistance.