Abstract: Production of polymers in bead form by forming a water-in-oil suspension of an aqueous solution containing at least one water-soluble ethylenically unsaturated monomer in an inert hydrophobic liquid organic dispersion medium and polymerizing the suspended monomer in the presence of a polymerization initiator and a protective colloid obtained by polymerizing (A) 60 to 100% by weight of at least one monomer selected from the group consisting of cyclopentadiene, dicyclopentadiene, tricyclopentadiene and alkyl-substituted derivatives thereof, and (B) 0 to 40% by weight, based on the mixture of (A) and (B), of a mono- or diethylenically unsaturated monomer copolymerizable with (A).

Abstract: An assembly for the manual movement of relatively heavy material in a thin walled, handleless, and stackable drum without damage to the drum. The assembly includes a thin walled drum having an upper chine, a cover mounted on the chine and closing the drum, the cover having an annular downwardly extending groove located adjacent the chine and a v-type toggle clamp assembly connecting the cover to the drum along with a pair of spaced, detachable handle assemblies. Each handle assembly has a bracket having a pair of spaced abutments to engage the under side of the drum chine, a handle means pivotally mounted on the bracket to extend into the cover groove to secure the handle assembly to the drum and cover and a bracket strap to prevent rotation of the handle assembly about the drum chine during the lifting of the drum.

Abstract: Pyrazoline compounds of the formula (I): ##STR1## in which EACH OFB.sup.1 to B.sup.5 is hydrogen or C.sub.1 to C.sub.4 alkyl;R.sup.1 is hydrogen, alkyl or hydroxy;R.sup.2, r.sup.3, r.sup.5, r.sup.6 and R.sup.7 independently of one another are hydrogen, chloro, bromo, fluoro, methyl, ethyl, methoxy or ethoxy;R.sup.4 is hydrogen, alkyl, benzyl, phenylethyl or also phenyl optionally bearing chloro, bromo, methyl, ethyl, methoxy, ethoxy, cyano, dialkylamino or SO.sub.3 H as a substituent;X is --O--, --S--, --NR.sup.8 --, --NR.sup.8 CO--, --NR.sup.8 --SO.sub.2 --, --OSO.sub.3 -- or --SO.sub.3 --;R.sup.8 is hydrogen, alkyl or alkyl bearing hydroxy or C.sub.1 to C.sub.4 alkoxy as a substituent;A is hydrogen, sodium, potassium, unsubstituted or substituted ammonium, unsubstituted or substituted alkyl, cycloalkyl, aralkyl or aryl; and--NR.sup.8 -- and A together may be an optionally quaternized saturated or unsaturated heterocyclic ring.

Abstract: Manufacture of N-arylglycinonitriles by reacting N-arylamines with carbonyl compounds and hydrogen cyanide under specific reaction conditions in respect of the temperature, reaction time and hydrogen cyanide concentration.The N-arylglycinonitriles obtainable by the process of the invention are antioxidants and valuable starting materials for the manufacture of dyes, fungicides, bactericides, textile assistants and as inhibitors for use in antifreezes.

Abstract: The output of an oil well is improved by supplying thereto an acidizing-gel composition which consists essentially of, for example, about 15 weight percent of hydrochloric acid, about 20 weight percent of a suitable nonionic gel-forming surfactant containing oxyethylene and oxypropylene units, a corrosion inhibitor to the extent needed, and the balance water. The polymer is of high molecular weight, and though the composition containing such polymer is fluid at the temperature prevailing at the surface, nevertheless it forms a gel at the relatively higher temperatures present in the oil-bearing rock formation under the ground. This makes it possible to exert increased pressure on the oil-bearing rock formation, and it contributes to the effectiveness of the acidizing treatment.

Abstract: A process for working up reaction mixtures containing cyclohexanol and cyclohexanone, which have been obtained by oxidizing cyclohexane with molecular oxygen or gases containing molecular oxygen, in the liquid phase, at from 130.degree. to 200.degree. C. under a pressure of from 5 to 25 bars, working-up being effected by treatment with aqueous solutions of an alkali metal hydroxide and/or alkali metal carbonate in two stages, the fresh aqueous alkali metal hydroxide and/or alkali metal carbonate solution being fed to the second stage and the separated-off spent alkali being brought into contact with fresh reaction mixture in the first stage. The treatment in the first stage is carried out in the presence of inert gases and the inert gases are separated off before the second stage.

Abstract: New 2-trichloromethyl-4-nitrobenzenesulfenic acid derivatives having a fungicidal and bactericidal action, agents for combatting fungi and bacteria containing these compounds as active ingredients, processes for combatting fungi and bacteria with these active ingredients, and processes for their manufacture. Of particular interest are 2-trichloromethyl-4-nitrobenzenesulfenic acid chloride and 2-trichloromethyl-4-nitrophenyl thiocyanate.

Abstract: Laminates for the manufacture of flexographic printing plates and containing (a) a layer consisting essentially of a photocrosslinkable mixture of a two-block copolymer of from 30 to 95% w/w of a diene hydrocarbon and from 5 to 70% w/w of a styrene monomer or a partially hydrogenated product thereof with a compatible monomer having at least one C--C double bond, said mixture containing a photo-initiator, (b) a non-photocrosslinkable elastomeric underlayer having a Shore A hardness of from 15 to 70 and (c) a non-photocrosslinkable stablizing layer preferably between layers (a) and (b).

Abstract: Liquid oxyalkylated polyol prepolymers are prepared by oxyalkylating a prepolymer prepared from a hydroxy aromatic compound, an aldehyde and furfuryl alcohol with an alkylene oxide containing about 2-4 carbon atoms. The oxyalkylated polyol prepolymers have a viscosity of 1,000-500,000 centipoises at 25.degree. C. and contain about 1.1-6 moles of interpolymerized aldehyde, about 3.1-15 moles of interpolymerized furfuryl alcohol, and about 1-10 moles of interpolymerized alkylene oxide for each mole of interpolymerized hydroxy aromatic compound. The resultant prepolymers are highly reactive and may be further polymerized with or without monomers such as polyisocyanate to produce flame retardant solid or cellular interpolymers. Flame retardant solid or cellular polyurethanes are prepared in one variant by interpolymerizing organic polyisocyanates with the oxyalkylated polyol prepolymers. In another variant, flame retardant closed cell cellular interpolymers are provided.

Abstract: A video recording technique for recording sequential scenes or segments of video information, such as from a video camera, in such a manner that the recorded scenes may be reproduced without loss of synchronization. In a video tape recorder of the longitudinal type, a recording tape is decelerated to a stop at the end of a scene, and is back-spaced for a preselected time or distance. When the camera is next activated, the tape is accelerated to recording speed, and the camera is quickly synchronized with synchronization signals obtained from the tape, before switching to recording mode to record the next scene.

Abstract: A process for separating, by means of a selective solvent, a mixture of C.sub.

Abstract: Dimethyl carbonate is obtained pure, from its solutions in methanol, by extractive distillation carried out with a temperature of from 60.degree. C. at the top to 250.degree. C. at the bottom of the column and employing, as the extractant, an aprotic organic liquid which is substantially inert toward dimethyl carbonate, boils at above 100.degree. C. at standard pressure, is miscible with dimethyl carbonate in all proportions and has a dielectric constant .epsilon. of from 4 to 90 and a dipole moment .mu. of from 1.5 to 5 Debye.

Abstract: Aliphatic and cycloaliphatic isocyanates are manufactured by thermal decomposition of aliphatic or cycloaliphatic carbamic acid chlorides in the presence of an inert organic solvent of lower boiling point than that of the isocyanate formed. The decomposition is carried out in a reaction vessel surmounted by a rectifying unit, which in turn is surmounted by a reflux condenser, the isocyanate formed being condensed in the rectifying unit at a temperature above the boiling point of the solvent.

Abstract: Graft polymer dispersions are prepared by the in situ polymerization in the presence of a free radical catalyst of an ethylenically unsaturated monomer or mixture of monomers in a liquid polyol employing as the free radical catalyst a liquid unsymmetrically-substituted azo compound having a melting point less than 30.degree. C. and a ten hour half-life between 55.degree. C. and 100.degree. C. The dispersions are low viscous liquids which may be advantageously employed in the preparation of polyurethane foams.

Abstract: Spirodipyrans of the formula ##STR1## where A is the radical of a fused benzene ring or 2,1-naphthalene ring, the rings being unsubstituted or substituted by alkyl, alkoxy, nitro, chlorine, bromine or carbalkoxy,R.sup.1 is alkyl, phenyl, substituted alkyl or phenalkyl andR.sup.2 is hydrogen, orR.sup.1 and R.sup.2 together are trimethylene which is unsubstituted or substituted by 1, 2 or 3 alkyl andB is N-morpholinyl, substituted morpholinyl, thiomorpholinyl-S-dioxide, N-(N'-alkyl)-piperazinyl or N-isoindolinyl,And pressure-sensitive recording materials containing these spirodipyrans as dye-forming components.With electron acceptors, the spirodipyrans give reddish violet to blue colorations, while no coloration is produced on paper which has not been coated with an electron acceptor.

Abstract: A tape cassette loading mechanism for receiving a hinged cassette containing a tape supply reel and for automatically opening the cassette and advancing the supply reel into an operative position. The mechanism is used with tape transport apparatus of the type having supply and take-up reels driven by surface engagement with a capstan. A pair of pivot arms engage opposite halves of the cassette and pivot apart to open the cassette. A motor-driven lead nut mechanism rotatively drives a control arm to move the pivot arms and thereby open the cassette, and to simultaneously advance the supply reel along an arcuate path into the operative position in engagement with the capstan. The pivot arms simultaneously move the cassette in a lateral direction to match the lateral component of the advancing movement of the supply reel, thereby preventing the opened cassette from physically interfering with the advancing reel.

Abstract: New and valuable substituted 2,1,3-benzothiadiazine compounds having a good herbicidal action, herbicides containing these active ingredients, methods of controlling the growth of unwanted plants with these compounds, and processes for manufacturing them.

Abstract: New compounds containing tribromomethyl groups, of the general formula ##STR1## WHEREIN X is chlorine or bromine, R is hydrogen or methyl and R.sup.1 is hydrogen or a group of the formula --COO--CHX--CBr.sub.3 and a process for their preparation. The compounds may be used for the manufacture of homopolymers or copolymers which find diverse uses, eg. for the manufacture of moldings, coatings or adhesives. The compounds are manufactured by reacting the corresponding acid chlorides or acid bromides with equivalent amounts of tribromoacetaldehyde. The acid chlorides and bromides have the formula ##STR2## wherein X is chlorine or bromine, R is hydrogen or methyl and R.sup.2 is hydrogen or --COX. The reaction is carried out in the presence of from 0.1 to 10 per cent by weight of a Lewis acid, preferably AlBr.sub.3 or FeBr.sub.3, at from 0 to 80.degree. C., generally with reaction times of from 1 to 10 hours, preferably from 2 to 3 hours.

Abstract: 1,3-Diamino-2,2-dimethyl-propane is prepared by reacting hydroxypivalaldehyde with ammonia and hydrogen in the presence of a nickel catalyst at from 40.degree. to 150.degree. C. and thereafter at from 220.degree. to 300.degree. C. The product is a starting material for the manufacture of dyes, crop protection agents and plastics, especially nylons and polyurethanes.

Abstract: A flameproof thermoplastic molding material based on a styrene polymer and containing from 0.05 to 5 percent by weight of an organic bromine compound as the flameproofing agent, with or without a blowing agent, wherein the bromine compound contains a heterocyclic ring, comprising the group ##STR1## IN ITS MOLECULE, AND IS HEAT-STABLE UP TO AT LEAST 150.degree. C. The preferred bromine compound has the formula ##STR2## The molding materials may be used for the manufacture of self-extinguishing moldings, eg. foam moldings.