Abstract: A process for producing pyridine which comprises oxidatively dealkylating an alkylpyridine, an alkenylpyridine or a mixture thereof in the gaseous phase with molecular oxygen and steam in the presence of a catalyst comprising active components with a general composition of the formulav.sub.a X.sub.b Ag.sub.c O.sub.wherein a, c, and d respectively represent the atomic proportions of vanadium, silver and oxygen; X represents at least one element selected from the group consisting of chromium, molybdenum and tungsten; b represents the atomic proportion of X; and when a is 1, b is about 0.1 to about 1.5, c is about 0.005 to about 1.0, and d represents the atomic proportion of oxygen, is a value determined by the atomic valences of the individual V, X and Ag elements and is about 2.6 to about 7.5; and separating pyridine from the reaction product.

Abstract: An adsorbent used for effectively collecting or removing oily materials floating on water or emulsified or dispersed in water composed mainly of unrefined lints or unrefined linters together with, if necessary, filter papers, synthetic fibers, or natural fibers as a mixture thereof.

Abstract: A tobacco filter comprised of cellulose acetate fibers prepared by contacting cellulose fibers in the solid fiberous state, with a gaseous or liquid acetylating agent.

Abstract: 4-OXOPENTADECANEDIOIC ACID IS PREPARED BY OXIDIZING A .alpha.-CYCLODODEC-1-ENYLPROPIONIC ACID DERIVATIVE HAVING ONE OF THE FOLLOWING CHEMICAL FORMULAE AT ITS ETHYLENIC DOUBLE BOND WITH OZONE. ##STR1## The compound is useful as an intermediate for a musk perfume compound. The compound having the formula II is selectively prepared from cyclododecanone and di-alkyl succinate.

Abstract: A method of promoting the growth of plants which comprises applying to the surface of a plant growth medium to be exposed to a source of ultraviolet radiation a light-degradable mulching film for agricultural use, comprising a resin composition, whose resin components consist essentially of(1) from 5 to 50 percent by weight of polyisobutylene oxide resin,(2) the balance of a second resin component selected from the group consisting of at least one polyolefin resin and a mixture of at least one polyolefin resin and at least one polydiene resin.The resin composition can be made into a mulching film which, when exposed to the sunlight, photolytically degrades into a pulverized condition within a selected period of time.

Abstract: The present invention relates to a method and apparatus for treating waste water on ships, and more particularly to a method and apparatus for treating waste water on ships in a closed system.

Abstract: A smoking composition comprising, as one component, an ester of one or more aliphatic acids and a carbohydrate including cellulose, starch, and the like. The smoking composition is mild and non-irritating, has no off-flavor, and no unpleasant aftertaste remains after smoking.

Abstract: An alkali metal salt of carboxymethyl cellulose ether is prepared by dissolving an alkali in a water-containing organic solvent, adding starting cellulose to the solution, stirring the mixture to form a slurry of the alkali cellulose and then reacting it with an etherifying agent. Alternatively, it is prepared by reacting the starting cellulose in a water-containing solvent with sodium monochloroacetate as an etherifying agent, in the presence of an alkali.

Abstract: A hot stamp transfer press plate comprising a transfer medium on which a transfer layer has been applied in a desired pattern, said transfer layer consisting of hot stamp ink wherein there is employed, as the binder resin of the ink, methoxymethylated nylon copolymer obtained by N-methoxymethylation of an alcohol-soluble nylon copolymer containing a higher nylon salt, .omega.-amino acid or lactam, each of which has 10 or more carbon atoms.

Abstract: A catalyst cmposition for the gas phase oxidation of .alpha.,.beta.-unsaturated olefinic hydrocarbons comprising at least two metal oxides, at least one of which contains molybdenum, and a silica carrier having a specific surface area of at least 250 m.sup.2 /g, the catalyst composition as a whole having a specific surface area of from 100 to 250 m.sup.2 /g.

Abstract: A foamed body having an annular ring pattern in cross-section is prepared by blending a powdery or particulate styrene resin A and a powdery or particulate styrene resin B and molding the blend by extrusion or injection molding. The resin A particles have foaming components incorporated on the surfaces thereof, prior to blending same with resin B. The resin B has a lower fluidity than that of resin A by a difference of melt index of 1 to 20, it has a particle size larger than that of the resin A powder or particles, it is free of foaming component, it has a color different from that of powdery or particulate resin A, and it is compatible with resin A.

Abstract: A scrubbing apparatus comprising an outer cylinder and a rod which is longer than the cylinder and which slidably and sealingly fits within the outer cylinder. The rod has a transverse through-hole for insertion of a scrubbing element.

Abstract: A match head composition is prepared by mixing and kneading the component agents of the composition with glue and water, characterized in that wetted powdery cellulose nitrate containing more than 20 percent of water and having grain size of less than 840 microns is mixed in the composition in an amount not more than 10 weight percent on dry weight standard.

Abstract: A polyolefin film is coated with an undercoat of a mixture of (a) graft copolymer of chlorinated polypropylene to which is grafted a chlorinated vinyl monomer or a styrene monomer and (b) acrylonitrile-butadiene rubber, and a top coat of vinylidine chloride copolymer.

Abstract: A semipermeable polymeric membrane which essentially consists of modified poly (arylether-sulfone) having halomethyl groups and/or quaternized nitrogen atom-bearing groups. The membrane can be prepared by casting the polymer solution in a selected solvent or a mixture of suitable solvents on a surface, evaporating a portion of the solvent, and immersing the resulting film into a suitable non-solvent. The membrane is excellent in performance, such as water flux, and permeation selectivity, so that it can be used as a reverse osmosis membrane, an ultrafiltration membrane, and the like.

Abstract: A coating composition comprises (1) a partially hydrolyzed siloxane compound, (2) one or more of alkali metal and zinc salts of naphthenic acid, (3) acetic acid, and (4) other organic solvents. This composition contains these components in appropriate proportions. The composition is coated on the surface of an acrylic resin object and is cured. The coated acrylic object possesses excellent properties such as surface hardness, mar resistance, solvent resistance and stress-crazing resistance.

Abstract: A gas-generating agent for inflating air bags comprises finely divided particles of a co-precipitation compound made by the following steps: (1) uniformly mixing in water to form an aqueous solution a composition comprising (a) one or a mixture of two or more alkali metal azides and/or alkaline earth metal azides and (b) an aqueous solution of a composition comprising one or a mixture of two or more nitrates or perchlorates of alkali metals or alkaline earth metals; or mixing (a) and (b) plus (c) finely divided particles of silicon dioxide; or mixing (a), (b) and (c) plus (d) fine glass powder; (2) mixing the resulting solution or suspension with a water-soluble organic solvent; and (3) separating and drying the co-precipitation compound thus obtained. The gas-generating agent will not produce toxic compounds such as sodium metal and sodium peroxide which might injure the car driver and passengers. Further, when low softening glass is added, the maximum temperature of combustion will be lowered.

Abstract: A spirally-wound membrane-type separator module capable of reversing the direction of liquid flow comprises an outer cylindrical pressure vessel, a spirally-wound membrane element disposed within said outer vessel and extending in the axial direction thereof, and a plurality of brine seals disposed in the annular space defined between the outer periphery of said membrane element and the inner periphery of said outer vessel, each brine seal including a ring-like portion fitted on the outer periphery of said element and a cup-shaped flange portion sealingly engaging the inner periphery of said outer vessel, said brine seals being arranged close to one another in the direction of axis of the element with the flange portions of the brine seals being directed in opposite directions.

Abstract: A method for preparing a cellulose acetate fiber rod is provided, which is characterized by blooming a tow composed of cellulose acetate fibers, adding to or coating on the bloomed tow from 1 to 20 percent by weight (based on the weight of the cellulose acetate fibers) of a plasticizer comprising 1,4-butanediol diacetate, and gathering and curing the resulting cellulose acetate fibers at much higher speed than is possible in the conventional methods to form a cigarette filter rod which does not harm cigarette flavor and smoking taste.

Abstract: A nonwoven cellulose acetate laminate is made from a base material mainly composed of a cellulose acetate fiber web, in a short time, by the steps of: impregnating a liquid initial condensate of phenol-formaldehyde into the web or spraying a powdery condensate of phenol-formaldehyde onto the web, and then penetrating superheated steam through the resultant cellulose acetate laminate sheet. The sheet possesses good mechanical properties and excellent sound-absorbing and heat-insulating characteristics.