Abstract: An electron beam-curable resist composition suitable for fine patterning works in the manufacturing process of semiconductor devices is proposed which is outstandingly stable in storage and capable of being developed using an aqueous alkaline developer solution without scums and giving a patterned resist layer with high contrast and orthogonal cross sectional profile of a line pattern. The composition comprises (A) a triazine compound, such as 2-(4-methoxyphenyl)-4,6-bis(trichloromethyl)-1,3,5-triazine, (B) a cresol novolac resin, of which at least 30% by weight of the phenolic moiety is derived from m-cresol, and (C) an alkoxymethylated melamine resin in specified proportions of (B):(C) and (A):[(B)+(C)]. The sensitivity of the resist composition is greatly enhanced by a heat treatment of the resist layer at 90.degree.-140.degree. C. after patternwise irradiation with electron beams.

Abstract: The invention provides a novel compound which is a bis(4-alkyl-substituted piperazinylalkyl) ether such as bis[2-(4-methylpiperazinyl)ethyl] ether and bis[2-(4-ethylpiperazinyl)ethyl] ether. The compound, which can be prepared by the dehydrochlorination reaction between a 1-alkyl-substituted piperazine and a bis(chloroalkyl) ether, is useful as a catalyst for the urethane-forming reaction between a polyisocyanate compound and a polyol compound to give an advantage that a sufficiently long mixing time is available to ensure full uniformity of the reaction mixture before substantial proceeding of the reaction.

Abstract: A vinyl chloride-based polymeric resin having outstandingly high thermal stability is obtained by the suspension polymerization of vinyl chloride monomer, optionally, in combination with a comonomer in an aqueous polymerization medium to which a specific di- or tetraglycidyl compound such as diglycidyl hexadhydroisophthalate and 1,3-bis(N,N-diglycidylaminomethyl) cyclohexane is added. The improvement obtained by this method is so remarkable that substantial improvements can be obtained in the thermal stability of the resin even when vinyl chloride is copolymerized with a comonomer having at least two ethylenically unsaturated linkages in a molecule, e.g., diallyl phthalate and 1,6-hexane diol diacrylate, with an object to obtain a resin from which shaped resin articles having mattness in appearance can be prepared.

Abstract: A room temperature-curable organopolysiloxane composition is proposed which is capable of giving a cured silicone rubber having a low elastic modulus and low hardness. The composition comprises, in addition to a silanol-terminated diorganopolysiloxane as the base component (a), (b) an organosilicon compound represented by the general formula R.sup.1 R.sup.2 Si(--OCMe.dbd.CHCOOR.sup.3).sub.2, in which Me is a methyl group, R.sup.1 is a methyl, vinyl, 3,3,3-trifluoropropyl or phenyl group, R.sup.2 is a group selected from the class consisting of methyl, vinyl, trimethyl siloxy, vinyl dimethyl siloxy, divinyl methyl siloxy, trivinyl siloxy and 3,3,3-trifluoropropyl dimethyl siloxy groups and R.sup.

Abstract: A fluid dispensing system comprises a first linearly translatable plate and a second linearly translatable plate mounted below the first plate at 90 degrees relative thereto, the first plate being displaceable in one direction and the second plate being displaceable in another direction, said dispenser including an overhead fluid dispenser for dispensing calibrated amounts of fluid into each well of a multi-welled dish wherein the wells are spaced apart in rows and columns.

Abstract: The biliproteins delta-bilirubin and delta-bilipeptide are useful as a cytoprotective antioxidants. Delta-bilipeptide as the term is used herein is a truncated form of delta-bilirubin in which an albumin analogue of 10-200 amino acid residues replaces the albumin portion of delta-bilirubin. Patient-administrable compositions for addition to a patient's blood to minimize oxyradical damage caused by ischemia-reperfusion injury that may result in various surgical procedures, and comprising delta-bilirubin or delta-bilipeptide, are described.

Abstract: The film-forming agent of the invention is a blend of a silica organosol, of which the silica particles have a specified specific surface area and specified densities of surface groups including silanol groups, alkoxy groups and trimethyl silyl groups, and a diorganopolysiloxane of a specified viscosity terminated at each molecular chain end with a silanolic hydroxy group. The film-forming agent is useful as a skin-care preparation for preventing chapping of hands of people having frequent occasions of contacting with water to exhibit durable water repellency.

Abstract: A curable organopolysiloxane composition, which is suitable for making a silicone rubber mold for mock-up molding with, for example, an epoxy resin, is prepared by the steps of (a) blending an organopolysiloxane having at least two silanol groups in a molecule, a finely divided silica filler having hydrophobic surface and hexamethyl disilazane to give a uniform mixture in a specified proportion; (b) subjecting the uniform mixture to a heat treatment; and (c) blending the heat-treated uniform mixture with an organosilane compound having at least three hydrolyzable groups in a molecule or a partial hydrolysis product thereof as a crosslinking agent. The composition has good flowability suitable for the preparation of a mold of any exquisite forms and the silicone rubber mold prepared from the composition exhibits good mold-releasability lastingly.

Abstract: A method is proposed for the preparation of pitch-based carbon fibers having excellent mechanical properties or , in particular, a surprisingly high knot strength much higher than that of PAN-based carbon fibers. The method comprises the steps of melt-spinning of starting pitch material, infusibilization of the pitch fibers by oxidation and carbonization of the infusibilized pitch fibers in an inert atmosphere. The improvement of the inventive method consists in the infusibilization treatment of pitch fibers under controlled conditions so as to effect preferential oxidation of the surface layer to such an extent that the value m=(O.sub.1s /C.sub.1s)/(O/C) is at least 2, in which O.sub.1S /C.sub.1S is the molar ratio of the oxygen content to the carbon content in the surface layer as determined by the ESCA method and O/C is the molar ratio or the oxygen content to the carbon content for the infusibilized pitch fiber as a whole.

Abstract: The invention provides an efficient method for the preparation of a plastic-made computer-operating card having an emboss-worked relief pattern on the surface by adhesively bonding an emboss-worked plastic-made covering sheet to a body of the card. In the inventive method, a sheet for covering is lined with a second sheet on the back surface and the laminate is emboss-worked so that the debris of the second sheet fills up the cavity formed behind the relief pattern in the first sheet followed by peeling off the undeformed portion of the second sheet leaving the debris filling the cavity. Since the cavity behind the emboss-worked relief pattern is filled up with the debris of the second sheet, the emboss-worked covering sheet is safe from the troubles of collapsing or flattening in the subsequent step of adhesive bonding thereof to the body of the card.

Abstract: The reaction of 3',4'-anhydrovinblastine with a Catharanthus roseus-derived protein fraction to form vinblastine is improved by conducting the reaction in the presence of a reducing agent such as the enzyme cofactor NADH. A cationic species such as manganous ion may also be added to the reaction. Vinblastine yields are enhanced.

Abstract: Organosilicon compounds of a novel class are disclosed including .alpha.,.omega.-bis(alkoxy silyl)-substituted alkane compounds represented by the general formula(RO).sub.m (CH.sub.3).sub.3-m Si--CH.sub.2).sub.n Si(CH.sub.3).sub.3-m (OR).sub.m,in which R is a monovalent hydrocarbon group having 1 to 4 carbon atoms, e.g., methyl and ethyl, the subscript n is a positive integer in the range from 10 to 18 and the subscript m is 1, 2 or 3. The compound is useful as an additive in various kinds of synthetic resin-based compositions for the purpose of improving the properties such as flexibility, weatherability, cold resistance and mechanical strengths.

Abstract: An apparatus and method for separating hydrophobic materials in liquid state from an aqueous liquid or hydrophilic liquid, for separating debris from such liquid, or for purifying hydrophobic materials in liquid state are disclosed. An improved strainer for such apparatus and method is also disclosed. The apparatus and method employ at least one rotatable disk to which hydrophobic materials are attracted and retained; scraper blades to scrape the hydrophobic materials from the disk into a discharge tube from which said materials flow to a pump situated in the apparatus. The pump pumps the materials out of the apparatus. The pump is preferably driven by the same motor which rotates the disk. The strainer has an upper mesh portion and a lower portion where the walls and bottom are solid. The strainer also has an internal diverter plate. Influent containing debris strikes the plate and debris settles in the strainer and is retained in the non-mesh portion thereof.

Abstract: The invention provides a diorganopolysiloxane having a hydroxy- and amino-functional reactive group bonded only to one of the terminal silicon atoms of the linear molecular chain ends. The diorganopolysiloxane compound, which is useful as a modifying agent of various kinds of synthetic resins, is represented by the general formulaR.sub.3 Si--O--SiR.sub.2 --O.sub.n SiR.sub.2 --CH.sub.2 CH.sub.2 CH.sub.2 OCH.sub.2 CHOHCH.sub.2 NR.sup.1 R.sup.2,in which R is a monovalent hydrocarbon group, R.sup.1 and R.sup.2 are each a hydrogen atom or a monovalent hydrocarbon group selected from the class consisting of alkyl groups having 1 to 18 carbon atoms and aryl groups having 6 to 15 carbon atoms, at least one of R.sup.1 and R.sup.2 being not a hydrogen atom, or R.sup.1 and R.sup.2 are each a divalent group jointly forming a morpholino group together with the nitgoren atom and the subscript n is zero or a positive integer not exceeding 1000.

Abstract: The primer composition of the invention is particularly useful as an undercoating composition for a protective overcoating formed with a silicone-based coating composition containing a colloidal silica powder in respect of the excellent adhesion, heat resistance, resistance against hot water and weatherability of the overcoating layer.

Abstract: An optical waveguide fabrication technique utilizing a self-aligned cladding, in which an efficient and reliable optical waveguide can be fabricated with minimum proton exchange; the guided mode property of the optical waveguide can be widely adjusted; and the optical waveguides can be fabricated in various types.

Abstract: A novel method is proposed for the preparation of a curable organopolysiloxane composition which is suitable as a material of a mold-making having excellent mechanical properties and durability in use for replica molding. The method comprises (a) blending a vinyl-containing organopolysiloxane with a hydrophobic reinforcing silica filler and hexamethyl disilazane, optionally, together with water each in a limited amount, (b) subjecting the blend to a heat treatment and (c) admixing the heat-treated blend with an organohydrogenpolysiloxane as a crosslinking agent of the vinyl-containing organopolysiloxane and a platinum compound as a catalyst for promoting the addition reaction between the silicon-bonded vinyl groups and the silicon-bonded hydrogen atoms.

Abstract: Pharmaceutical copositions comprising liposomal metalloporphyrins are provided for parenteral administration to mammals, including humans. These liposomal metalloporphyrins selectively target the spleen and markedly inhibit the heme oxygenase activity therein. A method is also provided for intravenous administration of these compositions to mammals to selectively target the spleen.

Abstract: Shaped articles of a crosslinked poly(vinylidene fluoride) resin can be prepared in a relatively simple process to be imparted with greatly improved resistance against heat, water, and chemicals in a much higher productivity than in the conventional electron-beam irradiation method. The method comprises the steps of (a) compounding the resin with an organosilane compound having an ethylenically unsaturated group, e.g., vinyl, and at least one alkoxy group in a molecule and a free-radical generator, e.g., organic peroxides, (b) heating the resin compound to effect graft-polymerization of the organosilane compound to the polymer molecules, (c) shaping the resin compound into a desired form, and (d) heating the shaped body in water containing a silanol-condensation catalyst dissolved or dispersed therein.

Abstract: A device is described for expressing liquid absorbed by the tip of a medical swab. The device comprises a barrel and a plunger slidable within the barrel for squeezing the tip of the swab. Liquid is discharged through a flow channel in the container or in the swab shaft. The device is useful particularly to recover small volumes of swab-absorbed liquid where necessary e.g. to carry out clinical essays.