Abstract: A racemic compound of the formula (1) ##STR1## and an anti-ferroelectric liquid crystal composition consisting essentially of said racemic compound and one anti-ferroelectric liquid crystal compound of the formula (2) or a mixture of two or more compounds selected from anti-ferroelectric liquid crystal compounds of the formula (2), ##STR2## said composition having excellent steepness of threshold, having an anti-ferroelectric phase over a broad temperature range and having the performance of a high response speed and a high contrast.

Abstract: An image-forming apparatus using a rubber blade having a rubber hardness of not smaller than 73.degree. for cleaning the residual toner on the photosensitive material drum, wherein a maximum rotational deviation r (mm) of said photosensitive material drum satisfies the following formula,0.15.gtoreq.r.gtoreq.((a.multidot.sin .theta.).sup.2 +b.sup.2).sup.1/2 -bwhereina: length (mm) one-half of the blade length,b: radius (mm) of the drum,.theta.: angle subtended by a line of the drum surface in parallel with an imaginary center axis of the drum and by a tangential line of contact between the rubber blade and the photosensitive material drum.This apparatus exhibits excellent cleaning performance, permits the photosensitive layer to be evenly scraped over the whole surface of the photosensitive material drum and, hence, makes it possible to stably form image for extended periods of time.

Abstract: A process for the preparation of (meth)acrylonitriles following ammoxidation process comprising catalytically oxidizing at least one saturated hydrocarbon selected from the group consisting of propane and isobutane with a mixed gas containing molecular oxygen and ammonia in the presence of a catalyst, is provided, the process being characterized by the use of a catalyst composed of complex oxide which is expressed by the general formula (I) below:Mo.alpha.Sb.beta.W.gamma.Ox (I)(in which .alpha., .beta. and .gamma. denote the number of atoms of Mo, Sb and W, respectively, and when .alpha. is 1, .beta. is 0.5-10 and .gamma. is 0.5-10; and x is a value determined by valence of the existing elements)as supported on a refractory inorganic carrier.According to this process, the object nitrites can be prepared at high yields with industrial advantages.

Abstract: The present invention discloses lens-type retroreflective sheeting excellent in appearance and having constant thickness and desired retroreflective performance, wherein the transparent microspheres in the retroreflective layer are composed of transparent microspherical lenses (A) having a refractive index of 1.8 or more and transparent microspherical fillers (B) having a refractive index different by at least 5% from the refractive index of the lenses (A).

Abstract: A screen textile material for high precision and high density screen printing is made of a core and sheath type conjugate fiber in which a core component is formed of a thermotropic liquid crystalline polyester (A polymer) and a sheath component is formed by blending a flexible thermoplastic polymer (B polymer) and a thermotropic liquid crystalline polyester (C type) with a blending ratio of the C polymer of 0.15 to 0.45. The core and sheath type conjugate fiber has a specific color specification values to perform high quality printing by prevention of halation.

Abstract: This invention relates to synthetic chalcoalumite-type compounds represented by formula (1) below:M.sup.2+.sub.a-x/2 Li.sub.x.sup.1+ Al.sub.4.sup.3+ (OH).sub.b (A.sup.n-).sub.c.mH.sub.2 O (1)(whereinM.sup.2+ represents at least one of the following divalent metal ions: Zn.sup.2+, Cu.sup.2+, Ni.sup.2+ and Mg.sup.2+,a is 0.6<a<1.2,x is 0<x<1.4,b is 11<b<13,A.sup.n- is at least one member of the group consisting of SO.sub.4.sup.2-, HPO.sub.4.sup.2-, CO.sub.3.sup.2-, SiO.sub.3.sup.2-, SO.sub.3.sup.2-, HPO.sub.3.sup.2-, H.sub.2 PO.sub.4.sup.-, NO.sub.3.sup.- and OH.sup.-,c is 0.5<c<1.2, andm represents a number of 1 to 4)and processes for their preparation. The synthetic chalcoalumite-type compounds of the present invention are conveniently used for adsorbing agents of acidic substances, anion exchangers, infrared absorption agents for agricultural films, deodorants and recording media for ink jet, etc.

Abstract: A racemic compound of the formula (1) ##STR1## and an anti-ferroelectric liquid crystal composition consisting essentially of said racemic compound and one anti-ferroelectric liquid crystal compound of the formula (2) or a mixture of two or more compounds selected from anti-ferroelectric liquid crystal compounds of the formula (2), ##STR2## said composition of the present invention, exhibiting a small spontaneous polarization and a fast response so that a display device having a high display quality can be achieved.

Abstract: Topical alcoholic or aqueous alcoholic gels containing ibuprofen or other NSAIDs, such as, naproxen, in substantially neutral salt form, have enhanced penetration through skin and may provide rapid pain/inflammation relief by including in the formulation 2-n-nonyl-1,3-dioxolane or other hydrocarbyl derivative of 1,3-dioxolane or 1,3-dioxane or acetal, as skin penetration enhancing compound. The amount of propylene glycol may be varied to adjust the initial flux of the NSAID through the skin, especially for ibuprofen, naproxen, and ketorolac.

Abstract: The present invention provides a novel naphthoquinone derivative preferred as an electron transporting agent and an electrophotographic photosensitive material of high sensitivity which contains a novel naphtoquinone derivative having a general formula (1) ##STR1## wherein R.sup.1 represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group which may contain a substituent, and R.sup.2 represents a hydrogen atom, an alkyl group which may have a substituent, a halogenated alkyl group, an aldehyde or a nitro group. The derivative is contained in a photosensitive layer of an electrophotographic photosensitive material as an electron transporting agent.

Abstract: A swallow-tail-shaped liquid crystal compound of the following general formula (1), ##STR1## wherein A is --O--, --COO-- or a single bond (--), m is an integer of 4 to 12, and n is an integer of 2 to 4.The above swallow-tail-shaped liquid crystal compound of the present invention is a novel achiral anti-ferroelectric liquid crystal and can be converted to an optically active anti-ferroelectric liquid crystal by mixing it with an optically active compound as a chiral dopant.

Abstract: A foamed pad material for low-pressure compression molding which comprises a crosslinked rubbery olefinic soft resin foam and exhibits (a) a hysteresis loss of not greater than 40%, (b) a gel fraction of 20 to 98%, and (c) a density of 0.025 to 0.30 g/cm.sup.3. This foamed pad material is excellent in heat weldability with core forming materials and exhibits excellent heat resistance, strain resistance, moldability and restoring properties at the time of low-pressure compression molding at which compression and drawing are carried out at high temperatures. Moreover, the foamed pad material can allow the molded skin material to have cushioning properties with high flexibility and further to have improved feeling.

Abstract: The present invention provides a hot melt adhesive composition comprising an epoxy-modified block copolymer obtained by epoxidizing a carbon-carbon double bond of a conjugate diene component in a block copolymer having a polymer block (A) comprising mainly a vinyl aromatic compound and a polymer block (B) comprising mainly a conjugate diene compound in one molecule, a paraffin wax having a melting point of 40 to 100.degree. C., a tackifier and an antioxidant. The hot melt adhesive composition of the present invention is well compatible with a paraffin wax and a tackifier because it has an epoxy group which is a polar group in a molecule. Further, the hot melt adhesive composition has excellent heat resistance and cold resistance because of a combination of the epoxy-modified bloc copolymer as a base polymer with paraffin wax, and while the melt viscosity is low, the heat resistance is high.

Abstract: A 4-methyl-1-pentene resin composition comprising (A) 20 to 60 parts by weight of poly-4-methyl-1-pentene or a copolymer chiefly composed of 4-methyl-1-pentene, (B) 30 to 60 parts by weight of an ethylene/butene copolymer, (C) 5 to 40 parts by weight of poly-1-butene or a copolymer chiefly composed of 1-butene and another .alpha.-olefin, and (D) 0 to 30 parts by weight of a propylene/butene copolymer is provided. The composition of the present invention has excellent heat resistance, transparency, gas permeability, mold releasability, liquid drainability, heat seal strength, and impact resistance. Especially, it has excellent adhesive properties to 4-methyl-1-pentene resin and other resins and is preferably used for the production of laminated products.

Abstract: A nail enamel based on a solvent mixture of nitrocellulose, and plasticizer(s) is made faster drying by incorporating a particular class of vinyl-silicone copolymers. Trapping of bubbles in the dried enamel is avoided by incorporating a dimethicone anti-foaming agent.

Abstract: A ferrielectric liquid crystal compound of the following general formula (1), ##STR1## wherein R is a linear alkyl group having 6 to 12 carbon atoms; X is a hydrogen atom or a fluorine atom; m and n are the same or different from each other, each being an integer of 1 to 3; and C* is an asymmetric carbon atom,the ferrielectric liquid crystal compound being remarkably valuable as a raw material for a liquid crystal display device since it shows a ferrielectric phase in a broad temperature range and shows a high-speed response in spite of its small spontaneous polarization.

Abstract: Novel anti-ferroelectric liquid crystal compounds of the formula (1), ##STR1## wherein R is a linear alkyl group having 6 to 12 carbon atoms, X is a hydrogen atom or a fluorine atom, n is an integer of 2 to 7, p is an integer of 0 to 2 and C* is an asymmetric carbon atom. The above anti-ferroelectric liquid crystal compounds have an anti-ferroelectric phase in a broad temperature range and have a low melting point, so that they can be advantageously used as a main component for a practically valuable liquid crystal material or as a component for a liquid crystal composition.

Abstract: Disclosed herein is a method for continuously producing an expansion-molded article, comprising feeding foamed particles between a belt continuously traveling along the upper surface within a passageway defined by structural members and having a rectangular form in section and a belt continuously traveling along the lower surface within the passageway, and then causing the foamed particles to successively pass through a super heated steam-feeding region and a cooling region within the passageway. The foamed particles used are foamed particles of a polyolefin resin, in which a recovery factor from compression defined by the equation (1):Recovery factor from compression (%)=V.sub.2 /V.sub.1 .times.100(1)wherein V.sub.1 is the original bulk volume of the foamed particles, and V.sub.

Abstract: A process for preparing a propylene polymer composition having excellent rigidity, heat resistance and impact resistance, the process comprising conducting multistage polymerization including a step (a) for preparing a propylene (co)polymer (a), a step (b) for preparing a propylene-olefin copolymer (b) and a step (c) for preparing an ethylene-olefin copolymer (c) in the presence of (A) a transition metal compound and (B) a compound activating the transition metal compound (A), in which the steps (a), (b) and (c) may be carried out in any order, each of the second and subsequent stage polymerizations is carried out in the presence of a polymer or polymers obtained by the preceding stage or stages, respectively, and the resulting propylene polymer composition contains the propylene (co)polymer (a) in an amount of 20 to 90% by weight, the propylene-olefin copolymer (b) in an amount of 5 to 75% by weight and the ethylene-olefin copolymer (c) in an amount of 5 to 75% by weight, and has MFR, as measured at 230.

Abstract: A process for producing a porous film of polypropylene comprises subjecting (1) an air-impermeable biaxially stretched film of polypropylene resin comprised predominantly of polypropylene having a crystallinity of at least 40% or (2) an air-impermeable inflation film of polypropylene resin comprised predominantly of polypropylene having a crystallinity of at least 46.5%, in the substantial absence of a plasticizer or a solvent, to a thermal treatment in the presence of a first liquid substantially incapable of dissolving the film while fixing the film in two orthogonal directions for making the film porous.

Abstract: Topical alcoholic or aqueous alcoholic gels containing testosterone, progesterone, estradiol or other hormones have enhanced penetration through skin by including in the formulation 2-n-nonyl-1,3-dioxolane or other hydrocarbyl derivative of 1,3-dioxolane or 1,3-dioxane or acetal, as skin penetration enhancing compound.