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.

Abstract: A novel fluorine-containing polymeric compound represented by the general formula--CH.sub.2 --CH[(CH.sub.2).sub.a --NH.sub.2 ]}.sub.m-n--CH.sub.2 --CH[(CH.sub.2).sub.a --NH--CO--NH--CH.sub.2).sub.a Rf]}.sub.n,in which Rf is a perfluoroalkyl group having 6 to 15 carbon atoms, m is a positive integer in the range from 10 to 1500, n is a positive integer smaller than 0.7 m and a is 0 or 1, is prepared by the reaction of, when a is 0, a polyvinylamine of the formula --CH.sub.2 --CHNH.sub.2 ].sub.m, with an alkyl perfluoroalkanoate of the formula Rf--CO--OR, in which R is an alkyl group having 1 to 5 carbon atoms, or, when a is 1, a polyallylamine of the formula --CH.sub.2 --CH(CH.sub.2 --NH.sub.2)].sub.m, with a perfluoroalkylmethyl isocyanate of the formula RfCH.sub.2 --NCO. Despite the high fluorine content, the polymer is soluble in at least one kind of organic solvents so that Langmuir-Blodgett's films can be prepared from a solution of the polymer.

Abstract: The developer solution of the invention is suitable for use to develop a positive-working resist composition comprising an alkali-soluble novolac resin and a naphthoquinone diazide compound and capable of giving a patterned image of the resist layer with a high contrast and increasing the effective depth of focus. The characteristic ingredient in the inventive developer solution is an alkali-soluble organic cyclic nitrogen compound such as N-hydroxyethyl piperazine, N-methyl-4-piperidone, 1,3-dimethyl-2-imidazolidinone and the like added in a specified concentration to a conventional developer solution containing tetramethyl ammonium hydroxide or choline as the water-soluble alkaline compound.

Abstract: Cobalt protoporphyrin and cobalt mesoporphyrin are administered to animals to achieve weight loss and improved protein to fat ratio without decrease in hormone concentration.

Abstract: The invention provides an optical article, such as optical disc substrates and optical fibers, made of a polycarbonate resin suitable for manufacturing articles for optical applications in respect of the high mechanical strength, e.g., high impact strength, and low birefringence by virtue of the unique molecular structure having molecular chain ends stoppered with 4-cumyl phenol as the chain-terminal stopping agent in the polycondensation reaction of a dihydric phenol compound, e.g., bisphenol A, and phospgene along with a narrowly specified viscosity-average molecular weight in the range from 10,000 to 17,000.

Abstract: A novel fluorine-containing polymeric compound represented by the general formula--CH.sub.2 --CH(CH.sub.2 --NH.sub.2)].sub.m-n --CH.sub.2 --CH(CH.sub.2 --NH--CS--NH--Pn--OCH.sub.2 Rf)].sub.n,in which Rf is a perfluoroalkyl group having 6 to 15 carbon atoms, Pn is a 1,2- or 1,4-phenylene group, m is a positive integer in the range from 10 to 1500, n is a positive integer not exceeding m, is prepared by the reaction of one mole of a polyallylamine of the formula--CH.sub.2 --CH(CH.sub.2 --NH.sub.2)].sub.m,in which m has the same meaning as defined above, with n moles of a 2- or 4-(perfluoroalkylmethoxy)phenyl isothiocyanate represented by the general formulaRfCH.sub.2 O--Pn--NCS,in which Rf and Pn each have the same meaning as defined above. Despite the high fluorine content, the polymer is soluble in at least one kind of organic solvents so that Langmuir-Blodgett's films can be prepared from a solution of the polymer.

Abstract: A curable organopolysiloxane composition comprising a vinyl-containing organopolysiloxane, organohydrogenpolysiloxane and platinum catalyst is proposed which is cured into a gel-like material suitable as a potting and encapsulating agent for protecting, for example, electronic components from mechanical shocks and adverse influence of the ambient atmosphere. Different from conventional similar compositions, the gelled material from the inventive composition little suffers from the problem of bleeding of oily materials contained therein on the surface.

Abstract: The room temperature-curable coating composition comprises, as the resinous vehicle thereof, a copolymer prepared by the radical copolymerization of a ternary monomeric mixture composed of (A) 20-80% by weight of an alkyl (meth)acrylate, e.g., methyl methacrylate, (B) 10-78% by weight of an oligomeric organopolysiloxyanylalkyl (meth)acrylate, e.g., 1,1,1,3,5,5,5-heptamethyl-3-(3-methacryloxypropyl) trisiloxane, and (C) 2-30% by weight of an organosilane compound having at least one hydroxyzable group and a radical-polymerizable unsaturated group, e.g., 3-methacryloxypropyl trimethoxy silane. The coating composition gives a cured coating film having outstandingly high weatherability and resistance against ultraviolet light, water and chemicals in comparison with conventional room temperature-curable acrylic resin-based coating compositions.

Abstract: The fluorine-substituted organopolysiloxane as the principal ingredient of the inventive silicone rubber composition has vinyl groups to serve as the cross-linking points at the molecular chain terminals while at least the penultimate siloxane unit or the silicon atom adjacent to the terminal silicon atom has no fluorine-substituted hydrocarbon group bonded to the silicon atom. Being freed from the steric hindrance due to the bulky fluorine-substituted hydrocarbon group bonded to the adjacent silicon atom, the vinyl group bonded to the terminal silicon atom can pertain to the cross-linking reaction much easier than otherwise so that the silicone rubber composition of the invention containing an organic peroxide or a combination of an organohydrogenpolysiloxane and a platinum catalyst as a curing agent can be rapidly cured to give a cured silicone rubber article having excellent resistance against oils and organic solvents as well as mechanical properties.

Abstract: An epitaxial wafer of gallium phosphide single crystal having an epitaxial layer of gallium phosphide arsenide mixed crystal grown on the surface by the method of vapor-phase epitaxial growth can be freed from surface defects and greatly improved in respect of the electroluminescent intensity of the light-emitting diode prepared therefrom, yield of the light-emitting diodes which can be obtained from said single epitaxial wafer the growth rate of the epitaxial layer when the substrate wafer has a crystallographic surface plane which is inclined from the {001} plane in the <110> direction by 8.degree. to 15.degree. or a crystallographically equivalent plane thereto.

Abstract: The positive-working photosensitive composition useful as a material of photoresist comprises, in addition to a film-forming resin, such as a cresol novolak resin, and a photosensitive compound, such as an ester of a polyhydroxy benzophenone and 1,2-naphthoquinonediazido-5-sulfonic acid, an esterification product of curcumin with 1,2-naphthoquinone diazide sulfonic acid in a limited amount. The photosensitive composition is outstandingly insusceptible to the adverse influence of halation even when the photoresist layer is formed on a highly reflective aluminum-deposited surface of a substrate without decreasing the photosensitivity of the composition to actinic rays in the photolithographic process for the manufacture of semiconductor devices.

Abstract: A curable composition, in which powder of an organic or inorganic compound is added to and dispersed in a 2-cyanoacrylate and an acidic substance and a basic substance are contained as the stabilizer.In the curable composition of the invention, powder of organic or inorganic compound can be stably dispersed into the composition by the combined use of the acidic substance and the basic substance, thereby providing desired properties with ease while giving excellent storage stability and maintaining the instantaneous curing property of the composition. The curable composition can generally be used as adhesives, coating agents, paints, potting agents, etc.

Abstract: Rabbit-mouse hybridomas are cultured immediately after fusion in a suspension medium supplemented with normal rabbit serum. This results in stable hybridomas and provides a source of intact rabbit monoclonal antibody immunoglobulin of defined specificity. A hybridoma which secretes intact rabbit antibody specific for Group A Streptococcus is exemplified. Diagnostic compositions and test kits containing rabbit monoclonal antibodies produced from such hybridomas are described.This application is a continuation of application Ser. No. 07/189,754, filed May 3, 1988, which in turn is a continuation-in-part of application Ser. No.: 046,439, filed May 4, 1987, now abandoned.

Abstract: An electrospray ion source is designed for ready and simple plugging into commercial mass analyzers for mass spectrometric analysis of organic molecules. The electrospray is carried out is the ambient air and the ions and other charged species enter the mass analyuzer through a long metal capillary tube and three stages of differential pumping. The use of the long tube allows (a) convenient injection of the ions into the mass analyzer (b) optimization of the spray by direct visualization in the air (c) efficient and controlled heat transfer to the droplets and (d) efficient pumping of the region between the capillary exit and the skinner. Desolvation of the solvated ions is carried out using a combination of controlled heat transfer to the charged droplets during the transit through the tube and collisional activation in a region of reduced pressure. Desolvation with this system does not involve use of a strong countercurrent flow of heated gas.

Abstract: The invention relates to an improvement in the so-called flip-chip method for electrically connecting bonding pads of a semiconductor device, e.g., IC chips, and electrodes of a circuit board. In place of the conventional bumps formed of a solder alloy on the bonding pads, the bonding pads in the invention are formed of a material having electric conductivity and rubbery elasticity so that the reliability of the electric connection can greatly be improved.

Abstract: A novel organopolysiloxane compound is proposed which has, in a molecule, at least three (meth)acryloxy groups localized at only one of the molecular chain ends of the polysiloxane chain. By virtue of the localization of the (meth)acryloxy groups, the organopolysiloxane compound is highly curable by the irradiation with a radiation, e.g., electron beams and ultraviolet light, to give a cured coating film on a substrate surface exhibiting excellent releasability against sticky substances. A synthetic route for the preparation of such a one-end crosslinkable organopolysiloxane compound is described.

Abstract: Thermally processing seafood, e.g., shrimp, sardines, or salmon, in the presence of a mixture of an acid and its lactones, preferably a mixture of an aldonic acid and its lactones whereby, without need for salt, the texture and flavor of the seafood are maintained through thermal processing and storage. Also, a package having a thermally processed seafood product and gluconic acid therein. The preferred mixture is obtained by combining the seafood with glucono-delta lactone, and the mixture is comprised of gluconic acid with its lactones, glucono-delta lactone and glucono-gamma lactone.

Abstract: A carryall suitable for transporting articles including a towel to a bathing area includes an elongate and flexible pouch formed into a plurality of closeable compartments in the interior. Fasteners are formed on an inner surface of one end portion of the pouch and the outer surface of the opposite end portion so that the elongate pouch can be formed into a circular enclosure and held by the fasteners to define an area enclosing a rolled beach towel. One end portion of the pouch has an elongate shoulder strap fixed on the outer surface thereof, and a length of material is fitted across the outer surface of the other end portion of the pouch such that the elongate shoulder strap can be fitted under the length of material to hold the pouch in its rolled condition securely during transport of articles to a bathing area.