Abstract: Antitumor agent which comprises as the principal agent a mixture of organic compounds having amino group and silyl group (reffered to as silamines) and represented by structural formulae with Adriamycin. Use of silamines in the form of a mixture with Adriamycin, which is an anti-cancer agent showing a potent effect but having extremely serious side effects, makes it possible to highly potentiate the anti-cancer properties of Adriamycin. As a result, the dose of Adriamycincan be reduced and thus its side effects can be relatively relieved as compared with the case where it is used alone. ##STR1## ?wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 represent each hydrogen or C.sub.1-10 alkyl, aryl or aralkyl, or the pair of R.sub.1 with R.sub.2 and that of R.sub.5 with R.sub.6 may be bonded via alkylene, allylene or aralkylene.

Abstract: The present invention relates to a method for preparing 4-hydroxy-1,2,2,6,6-pentamethylpiperidine comprising the following steps:(i) reacting 4-hydroxy-2,2,6,6-tetramethylpiperidine with at least one compound selected from the group consisting of formaldehyde, paraformaldehyde and trioxane, optionally in the presence of formic acid;(ii) neutralizing the reaction product of step (i) by adding a base thereto; and(iii) after the neutralization, separating the crude product from the aqueous layer and crystallizing and filtering the crude product to thereby obtain crystals of 4-hydroxy-1,2,2,6,6-pentamethylpiperidine with a water content of 3% by weight or less.

Abstract: An antistatic polyester film having formed on at least one side of a polyester film a coating layer which consists essentially of (a) 5 to 40% by weight of a phosphoric acid ester salt-based antistatic agent, (b) 1 to 20% by weight of a surfactant having an HLB value of 12 or less, (c) 40 to 90% by weight of at least one binder selected from acrylic copolymers and polyester copolymers, and (d) 3 to 25% by weight of fine particles having an average particle diameter of 10 to 500 nm and which has an extremely uniform surface. This film is excellent in anti-blocking properties at a high humidity and antistatic properties at a low humidity.

Abstract: The present invention relates to a recycle developing process which comprises developing an electrostatic image formed on a photosensitive material with a starting developer filled in a developing vessel, transferring the toner image to a predetermined paper, recovering the toner remaining on the photosensitive material by a cleaning means, and repeating the developing procedure while replenishing a virgin toner and the toner recovered by the cleaning means into the developing vessel; wherein the virgin toner to be replenished into the developing vessel is that which is fulfilled in a container wherein a rotating roller is provided in an opening portion at a lower portion has a flowability, shown as a fallen amount of the toner at a time of falling via the rotating roller for a certain fixed time, of 50 to 70% based on the toner in the starting developer.According to this process, an abrupt decrease in the properties of the developer due to the mixing of the recovered toner can be relaxed.

Abstract: A mixture of lipophilic and amphiphilic/hydrophilic film-forming polymers of the formula (I)R--(CO).sub.m Y.sup.1 --(CH.sub.2 CHR.sup.1 O).sub.n --?CONH--Z--NHCO(OCH.sub.2 CHR.sup.2).sub.n' --Y.sup.2 --(CH.sub.2 CHR.sup.2 O).sub.n" !.sub.p --CONH--Z--NHCO--(OCH.sub.2 CHR.sup.1).sub.n --Y.sup.1 (CO).sub.m R (I)where R represents (i) an alkyl, alkenyl or alkaryl group of from 1 to 30 carbon atoms or (ii) a polypropylene oxide group or polybutylene oxide group; R.sup.1 and R.sup.2, each, independently, represent a hydrogen atom, or a methyl or ethyl group; Z represents a divalent linking hydrocarbyl group; m is 0 or 1; when m=0, Y.sup.1 represents O, NR.sup.3 or N.sup.+ R.sup.3 R.sup.4 X.sup.- and when m=1 Y.sup.1 represents O; Y.sup.2 represents O, NR.sup.3, N.sup.+ R.sup.3 R.sup.4 X.sup.-, (R.sup.3 NCH.sub.2 CH.sub.2).sub.t, or ?(R.sup.3 R.sup.4 N.sup.+ CH.sub.2 CH.sub.2)X.sup.- !.sub.t ; R.sup.3 and R.sup.4, independently, represent C.sub.1 -C.sub.

Abstract: A polishing slurry is formed of a silica-dispersed solution obtained by dispersing, in an aqueous solvent, a fumed silica having an average primary particle size of from 5 to 30 nm, the silica-dispersed solution exhibiting a light scattering index (n) of from 3 to 6 at a silica concentration of 1.5% by weight, and the fumed silica dispersed therein having an average secondary particle size of from 30 to 100 nm on the weight basis. The polishing slurry is produced by pulverizing, using a high-pressure homogenizer, a silica-dispersed solution obtained by dispersing a fumed silica in an aqueous solvent, so that the fumed silica possesses an average secondary particle size of from 30 to 100 nm on the weight basis. The polishing slurry is used for polishing semiconductor wafers and inter-layer dielectric in an IC process.

Abstract: A diene rubber (iii) can be obtained by mixing in a solution state:a modified styrene-butadiene rubber (i) having a weight-average molecular weight of 150,000-500,000, obtained by reacting a diene polymer having a bound active metal in the molecule, with a modifier such as N-methyl-.epsilon.-caprolactam or the like, anda branched styrene-butadiene rubber (ii) having a weight-average molecular weight of 800,000 or more.This diene rubber (iii) and a rubber composition comprising the diene rubber (iii) and other diene rubber (iv) have superior processability when unvulcanized and give a vulcanized rubber having improved abrasion resistance, resiliency and low-temperature properties.

Abstract: A steering wheel for motor vehicles which is composed of a steering wheel base covered with a skin material of: (I) 10-50 parts by weight of a polyethylene resin (A); and (II) 90-50 parts by weight of a block copolymer (B) including a polymer block (a) of styrene or a derivative thereof and an isoprene polymer block or an isoprene-butadiene copolymer block (b), the polymer or copolymer block containing 40% or higher of isoprene units bonded at 3,4- position relative to the total isoprene units and 97% or more of the double bonds having been hydrogenated, (the total amount of the components (A) and (B) is 100 parts by weight). The skin material for the steering wheel is a soft, injection-moldable thermoplastic olefin elastomer composition having a low specific gravity and good wear resistance, which is capable of recycling and gives excellent feel of touch.

Abstract: An electrode structure for electrolysis of water comprising a sheet formed from an electrically non-conductive material whose both sides are laminated with a sheet formed from an electrically conductive material, and a plurality of holes having been bored through said laminated sheet. A net shape sheet of an electrically non-conductive material or an electrically conductive material can be used as the electrically non-conductive sheet or as the electrically conductive sheet. After setting one said electrically conductive sheet as an anode and another one as a cathode, the sterilization of water by electrolysis is carried out by immersing at least a portion of the electrode structure into water, and applying an electric voltage across the anode and the cathode.

Abstract: Folding chair (10) comprising a seat (20) carried by righthand and lefthand front legs (11a, 11c) and righthand and lefthand rear legs (11b, 11d), and a back-rest (14) associated with said rear legs (11b, 11d) . Front legs (11a, 11c) and rear legs (11b, 11d) are interconnected for relative rotary movement. Likewise, the pairs of lefthand legs (11a, 11b) and righthand legs (11c, 11d) are interconnected for relative rotary movement.

Abstract: The present invention provides a powder coating composition comprising a resin powder comprising a film-forming resin and a crosslinking agent capable of giving rise to a crosslinking reaction with the resin, wherein the resin powder has a volume-average particle diameter of 3-17 .mu.m and a shape factor (SF) of 100.5-160. This powder coating composition can form a coating film having luster and smoothness and can be applied in a thin film.

Abstract: An additive for resins, a process for preparing amorphous definite particles used as an inorganic additive, and an olefin resin composition blended with the additive, and an agricultural film blended with the additive and a lithium-aluminum composite hydroxide carbonate. The additive for resins comprises amorphous definite particles having (1) a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 of from 2.1 to 3.3 on the basis of oxides, (2) an average particle diameter of from 0.3 to 10 .mu.m, (3) a moisture regain at equilibrium (RH90%) of not greater than 10%, (4) a bulk density of from 0.5 to 1.2 g/ml, and (5) a pH in the form of an aqueous suspension of from 6 to 10, said amorphous definite particles being obtained by acid-treating and then heat-treating a Pc zeolite having a spherical particle shape, a notched surface and a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 of from 2 to 3.

Abstract: Apparatus for applying a coating of a slurry of a powdered solder material and a binder to the inner surface of a hollow metal cylinder. The apparatus includes solder material coating device including a coating nozzle which may be moved between a coating position within the interior of the hollow metal cylinder and a non-coating position; a guide for guiding and transporting a hollow metal cylinder towards the nozzle; means for rotating and supporting the hollow metal cylinder when the nozzle is in the coating position. The solder coated metal cylinder is used, for example, to provide an exhaust gas cleaning metal carrier in which a metal honey inner core is inserted into and soldered by the solder slurry applied to the hollow metal cylinder.

Abstract: The present invention provides a process for producing a carboxylic acid ester by reacting a carboxylic acid with an alcohol in a suspension of a strongly acidic cation exchange resin which is a catalyst, which process comprises introducing a reaction mixture slurry containing said ion exchange resin, from a reactor for the above reaction to a resin-separating vessel, separating, in said resin-separating vessel, said reaction mixture slurry into a clear solution and a slurry-like high-concentration mixture, and discharging the clear solution from the upper section of the resin-separating vessel and the slurry-like high-concentration mixture from near the bottom of the resin-separating vessel to circulate it into the reactor. Preferably, the resin-separating vessel is operated under such conditions that the ascending speed of the clear solution becomes 0.003 m/sec or less. The process allows efficient separation/recovery of ion exchange resin from reaction mixture and reuse of recovered resin in the reaction.

Abstract: Disclosed is a liquid crystal device comprising a liquid crystal cell filled with a liquid crystal material capable of exhibiting a smectic phase, said cell including upper and lower substrates each having in order an electrode and an orientation film in contact with the liquid crystal material, a cross angle e formed by the orientation treatment directions of the orientation films is 180.degree.-.delta. or 360.degree.-.delta. (0.degree.<.delta..ltoreq.90.degree.). Also disclosed is a process for preparing the above-mentioned liquid crystal device comprising treating the orientation films and preparing the liquid crystal cell so as to have the orientation treatment directions of the orientation films form the cross angle .THETA. within the above range in the cell.

Abstract: A first monoclonal antibody which specifically reacts with a human .alpha..sub.2 -plasmin inhibitor complex (PIC) and a human plasminogen; a second monoclonal antibody which reacts with PIC and also with a human .alpha..sub.2 -plasmin inhibitor; a third monoclonal antibody which reacts with PIC, but does not react with a human plasminogen and a human .alpha..sub.2 -plasmin inhibitor; hybridomas which secrete the first to third monoclonal antibodies, and an immunoassay using the first to third monoclonal antibodies.

Abstract: A laminated polyester film for use as a film to be laminated on a metal plate, which comprises (A) a first layer formed of (a1) a first aromatic copolyester prepared in the presence of a germanium compound as a polymerization catalyst, which contains terephthalic acid as the main dicarboxylic acid component and ethylene glycol as the main glycol component and which has a melting point in the range of from 210.degree. to 245.degree. C. and a glass transition temperature of at least 60.degree. C., the first layer having (a2) a surface roughness (Ra) in the range of from 2 to 13 nm, and (B) a second layer formed of (b1) a polyester composition obtained by melt-mixing 90 to 45% by weight of a second aromatic copolyester which is composed, as a main recurring unit, of ethylene terephthalate, is produced in the presence of a germanium compound as a polymerization catalyst and has a melting point in the range of from 210.degree. to 252.degree. C.

Abstract: A microporous film of high molecular weight polyolefin useful in the prepration of filter mediums or non-aqueous battery separators and a process for producing the film are disclosed. The microporous film of high molecular weight polyolefin contains leaf vein-like fibrils as a main constituent on each of which fibrils indeterminate-form crystallites of not more than 1 .mu.m in size flocculate and has an intrinsic viscosity, ?.eta.!, of 4 dl/g or more and, preferably, has:(a) a void content of 25% or more;(b) a gas permeability of 1900 sec/100 cc or less;(c) a tensile strength of 0.05 GPa or more; and(d) a gas impermeability-acquiring temperature of 140.degree. C. or lower. The microporous film is produced by subjecting a high molecular weight, biaxially oriented polyolefin film of 60% or more in crystallinity to a heat treatment and, if necessary, to a stretch treatment to thereby melt or dissolve the indeterminate-form portion of the film, then crystallizing it onto the fibrils as crystallites.

Abstract: The present invention provides an ethylene copolymer comprising constituent units (a) derived from ethylene and constituent units (b) derived from an .alpha.-olefin having 3 to 20 carbon atoms, the ethylene copolymer being characterized in that(A) the ethylene copolymer has a density (d) of 0.86 to 0.95 g/cm.sup.3 ;(B) the ethylene copolymer has a MFR of 0.001 to 50 g/10 min as measured at a temperature of 190.degree. C. and a load of 2.16 kg;(C) the melt tension (MT) and MFR of the ethylene copolymer satisfy the relationlog MT>-0.66 log MFR+0.6; and(D) the temperature (T) at which the exothermic curve of the ethylene copolymer measured by a differential scanning calorimeter (DSC) shows the highest peak and the density (d) satisfy the relationT<400 d-250.

Abstract: There is provided a dental composition for relieving dentin hypersensitivity, which occludes dentinal tubules having an opening on the surface of dentin to relieve dentin hypersensitivity thereby to give an immediate relieving effect and to maintain the relieving effect for a long time.The dental composition for relieving dentin hypersensitivity, which comprises (A) a low molecular weight compound which can produce a precipitate which is hardly soluble in water when it reacts with a calcium compound, or which comprises the above component (A), (B) a calcium compound and/or (C) an aqueous polymer emulsion having a particle size smaller than that of a dentinal tubule and forming an agglomerate or a hardly soluble gel larger than the diameter of a dentinal tubule when it reacts with a calcium compound.