Abstract: Near infrared absorbers which have a molecular extinction coefficient of 200,000 or more and are represented by the formula (I) ##STR1## wherein each of Y.sup.1, Y.sup.2, Y.sup.3, Y.sup.4, Y.sup.5, Y.sup.6, Y.sup.7 and Y.sup.8 is hydrogen, an alkyl group, alkoxyl group or alkylthio group; each of A.sup.1, A.sup.2, A.sup.3, A.sup.4, A.sup.5, A.sup.6, A.sup.7 and A.sup.8 is hydrogen, halogen, a nitro group, alkyl group, aralkyl group, alkenyl group, alkynyl group, alkoxyl group, aryloxy group, alkylthio group or arylthio group; and Met represents two hydrogen atoms or a metal, are useful for the production of optical display and recording materials.

Abstract: Disclosed is a method for electroporation with which higher transformation efficiency may be attained than that attained by the conventional methods. In the method of electroporation, cells and DNAs are suspended in a buffer containing potassium ion as a cation and an amino acid ion and/or an organic acid ion as an anion, and substantially not containing chloride ion, and high voltage is applied thereacross.

Abstract: Herein disclosed are a polyisocyanato-isocyanurate represented by the following formula (I): ##STR1## wherein n is an integer ranging 1 to 5 and R.sub.1, R.sub.2 and R.sub.3 may be the same or different and each represents hydrogen atom or a lower alkyl group and a method for preparing it; and a resin containing an organic polyisocyanate containing not lower than 10% by weight of the polyisocyanato-isocyanurate represented by Formula (I) and a compound having at least two active hydrogen atoms as well as a resin composition for coating materials which comprises the resin.

Abstract: Wet refuse together with some amount of water may be deposited through a drain port of a sink tub in a common household. The wet refuse is then comminuted into finely divided pieces in a fully automatic manner by a wet refuse crusher without the need for any manual operation, and charged, together with water, into a wet refuse disposer containing a bed or matrix of particulate material loaded with microorganism such as soil bacteria capable of decomposing organics where all of the wet refuse is decomposed and consumed in at most about half a day as the finely divided pieces of wet refuse have tens or hundreds of times as great surface area as the wet refuse in its original form. The water entrained with the wet refuse is passed and discharged through the particulate bed material having a filtering function.

Abstract: A 3,4-cis isomer of 4-ethyl-1-(substituted phenyl)-3-substituted phenyl)pyrrolidin-2-one, when reacted with a base, can be effectively convered into a 3,4-trans isomer thereof which has a high herbicidal activity useful as an effective ingredient for a herbicidal composition. Furthermore, 3,4-trans-4-ethyl-1-(substituted phenyl)-3-(substituted phenyl)pyrrolidin-2-one compounds represented by the formula (III) ##STR1## (wherein R.sup.2 is an isopropyl group, and X is a fluorine atom, chlorine atom or bromine atom substituted at the 3-position, or fluorine atoms substituted at the 3- and 4-positions or the 3- and 5-positions) have an extremely excellent activity particularly as a herbicidally active ingredient of the herbicidal composition for rice paddy fields.

Abstract: An olefin is polymerized or copolymerized under the presence of an olefin-polymerizing catalyst prepared from (A) a transition-metal compound or (A') a transition-metal compound loaded on a fine-particle carrier, said transition metal being selected from group IVB in the periodic table; (B) an aluminoxane; and (C) an organoaluminum compound represented by the general formula [I] or [II]:R.sup.1.sub.m Al(OR.sup.2).sub.3-m [I]R.sup.3.sub.n Al(OSiR.sup.4.sub.3).sub.3-n [II]wherein R.sup.1, R.sup.2, and R.sup.3 are selected from hydrocarbon radicals, R.sup.4 is selected from the group consisting of hydrocarbon, alkoxy, and aryloxy radicals, and m and n are positive numbers of 0<m<3 and 0<n<3. This catalyst has a significantly high polymerization activity, and the thus produced olefin polymer or copolymer has a narrow composition distribution, a high bulk density, and uniform grain size with little powdery product.

Abstract: A two part curable adhesive composition for use as adhesive for dental composite resin is provided, as a first part (i) a solution comprising a radical polymerizable acrylate or methacrylate monomer having in its molecule at least one group selected from the group consisting of hydroxyalkyl, hydroxyalkylene, amide, oxyalkylene and polyoxyalkylene groups, and a colvent for said radical polymerizable acrylate or methacrylate monomer; and as a second part (ii) a curable composition comprising (P) a monofunctional acrylate or methacrylate monomer, (Q) a polyfunctional acrylate or methacrylate monomer, (R) an acrylate or methacrylate monomer containing an acidic group and at least one acryloyloxyl or methacryloyloxyl group in its molecule, and (S) a trialkylboron or an oxide thereof; wherein said component (S) is maintained separate from said components (P), (Q) and (R) until immediately before use.

Abstract: Denim cotton warp yarns are rope-dyed with a benzoquinone dye of formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.1 ', R.sub.2 ' and R.sub.3 ' commonly or independently represent a hydrogen atom, a halogen atom, alkyl, cycloalkyl, alkenyl, aryl, aralkyl, alkoxyl or alkoxyalkyl alone or in combination with a red .DELTA..sup.2,3' -biindolin-3,2'-dione dye and/or a blue indigoid dye or sequentially with the latter dye.

Abstract: Disclosed herein is a process for removing chloroprene by subjecting chloroprene-containing 1,2-dichloroethane to heat treatment at a temperature in the range of from the boiling point (85.degree. C.) of 1,2-dichloroethane to the thermal cracking temperature (300.degree. C.) of 1,2-dichloroethane. In particular, the process can be suitably applied to a liquid distillate from a low-boiling material separation column in a step in which 1,2-dichloroethane used as a raw material for production of vinyl chloride is purified by using a fractionation column.

Abstract: A resin composition for sealing semiconductors which comprises (a) a modified epoxy resin composed of (i) an epoxy resin having a specific structure or a graft polymer of an epoxy resin having a specific structure and a vinyl polymer and (ii) a silicone polymer in oily state or as particles having an average particle size of not more than 1.0 micron, which are uniformly dispersed in the epoxy resin or the graft polymer, (b) a hardening agent and (c) an inorganic filler, is herein provided. The resin composition for sealing semiconductors exhibits a low thermal expansion coefficient and a low elastic modulus, generates low stress when thermal shock is applied thereto and exhibits high heat resistance during soldering even after moisture absorption. Therefore, if the composition is used to seal large-scale semiconductor devices having high degree of integration or small-sized, thin semiconductors such as flat packages, these semiconductors provide high reliability.

Abstract: In accordance with the present invention, there are provided olefin polymerization solid catalysts comprising[A] a solid titanium catalyst component containing titanium, magnesium and halogen as its essential ingredients, said catalyst component having supported thereon[B] a transition metal compound containing a ligand having a cycloalkadienyl skeleton and, if necessary,[C] an organoaluminum oxy-compound.In accordance with the invention, there are also provided olefin polymerization solid catalysts comprising[i] a solid containing a transition metal compound containing a ligand having a cycloalkadienyl skeleton, said solid having supported thereon[ii] a titanium catalyst component containing titanium, magnesium and halogen as its essential ingredients and, if necessary,[iii] an organoaluminum oxy-compound.

Abstract: In accordance with the present invention, there are provided photo-recording media comprising photochromic compounds having been dispersed or dissolved in stretched films or nematic liquid crystals, the transition moment of light absorption of said photochromic compounds being orientated in a definite direction. In the photo-recording media as provided, an information recorded in the photochromic compounds can be read out without destroying the same.

Abstract: A process for the catalytic decomposition of chlorofluoro-alkanes commonly named as "flons" into harmless substances against destructing ozone layer of the stratosphere by using the catalyst comprising iron oxide supported on active carbon at the temperature more than 300.degree. C. in the presence of steam.

Abstract: Rolling bearing cages disclosed herein are prepared from compositions comprising an aromatic polyamide which comprises terephthalic acid constituent units, aromatic dicarboxylic acid constituent units other than terephthalic acid constituent units and straight-chain aliphatic alkylenediamine constituent units, and glass fibers, and can be easily incorporated into bearing races without damage, resultant bearings capable of being operated over a long period of time without deformation of said cages and deterioration of the lubricant oil.

Abstract: When obtaining microcapusles by covering a hydrophobic material with an aminoaldehyde polycondensation product as a wall-forming material in an acidic aqueous medium containing an anionic water-soluble polymer, a microcapsule slurry having a high solid content and low viscosity can be obtained by using as the anionic water-soluble polymer a multi-component copolymer consisting as essential monomer components thereof of at least three types of acrylic monomers selected respectively from (A) acrylic acid and/or methacrylic acid, (B) acrylonitrile and/or methacrylonitrile and (C) an acrylamidoalkylsulfonic acid and/or sulfoalkyl acrylate. Over a wide pH range, the microcapsule slurry obtained in accordance with this invention undergoes little viscosity changes and exhibits neither destruction of its dispersed state nor coagulating tendency. Resulting microcapsules have a sharp particle size distribution and are equipped with dense wall films.

Abstract: A printed circuit board having a plurality of bumps that serve for connection terminals, the bumps being formed by covering the printed circuit except portions where the bumps are to be formed, applying an electroplating onto the uncovered bump-forming portions on the printed circuit maintaining a thickness nearly equal to that of the covering, applying thereon a non-electrolytic plating and electroplating on the whole surface from the surfaces of the bump-forming portions to the surfaces of the covered portions, and removing the platings by etching from the surface except the bump portions.

Abstract: A partially fluorinated alumina catalyst having a determined component, which is obtained by calcining an Al.sub.2 O.sub.3.nH.sub.2 O(n=0 to 3) containing fibril of polytetrafluoroethylene, provides an excellent catalyst for the isomerization of HCFCs.

Abstract: An electrofusion joint includes an electrical heating wire embedded in its inner peripheral region. The electrofusion joint can be fitted to an end of a plastic pipe. By supplying electrical current to the electrical resistance heating wire the interface between the joint and the pipe are fusion bonded. In order to allow easy determination of the completion of fusion bonding, the electrofusion joint is provided with an annular groove in the outer peripheral surface extending to a region of the joint near the electrical resistance heating wire. A pin or bar-like core member is located at and extends upwardly from the center of the groove.

Abstract: Dihydrocaffeic acid derivatives are here disclosed which are applicable as medicines having excellent absorbency in the case of oral administration and good concentration retention in blood.The disclosed compounds have the function to induce the production and secretion of a nerve growth factor (NGF) in the brain tissue, and therefore they are effective as medicines for the progression inhibition and therapy of regressive disorders of the central nervous system.