Abstract: A process for the preparation of cis-2,6-dimethylmorpholine by isomerizing trans-2,6-dimethylmorpholine, wherein trans-2,6-dimethylmorpholine is converted, in the presence of hydrogen and of a catalyst containing palladium as well as zinc, cadmium or manganese or a mixture of these, at from 150.degree. to 250.degree. C. under a pressure of from 1 to 200 bar.

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

Abstract: A process for the preparation of 4-tert.-butylbenzaldehyde by electrochemical oxidation of 4-tert.-butyltoluene in the presence of an inorganic acid and of an alkylsulfonic, alkenylsulfonic or arylsulfonic acid.

Abstract: A novel process for the preparation of 2-imidazolines by reacting 1,2-diamines with nitriles or carbonyl compounds in the gas phase at from 200.degree. to 450.degree. C. in the presence of an oxide or phosphate of a metal of group 3 or 4 of the periodic table and/or in the presence of silicon dioxide.The 2-imidazolines obtainable by the process of the invention are valuable starting materials for the preparation of dyes, crop protection agents and drugs.

Abstract: Cyclically substituted fulvalenophanes of the formula ##STR1## where X is S, Se or Te, R is H or lower alkyl, A is --(CH.sub.2).sub.n --and Z is a radical of the formula ##STR2## a p-phenylene radical or a quinodimethane radical of the formula ##STR3## where the radicals R.sup.2 and R.sup.3 are halogen, carboxylic acid ester groups or cyano and R.sup.3 may also be hydrogen, and the quinodimethane ring may be substituted by halogen, nitro or cyano.

Abstract: A process for the preparation of pigmentary forms of bromoisoviolanthrone, wherein the leuco compound is oxidized in an aqueous alkaline medium, in the presence of a surfactant, at from 10.degree. to 100.degree. C., with exposure to shearing forces.The pigment obtained gives full-shade colorations which are very transparent and very brilliant, while in white reductions very deep colorations are obtained.

Abstract: A low-odor aqueous binder dispersion containing as copolymerized units, and based on solids content,(a) from 25 to 57.5% by weight of butadiene or of butadiene and an acrylic acid ester, the content of copolymerized butadiene being not less than 15% by weight,(b) from 40 to 70% by weight of styrene,(c) from 1 to 5% by weight of maleic acid or maleic anhydride and(d) from 1.5 to 7% by weight of methacrylamide, for use in paper-coating compositions.

Abstract: Substituted 2,3-dihydrobenzofurylmethyl esters of the formula I ##STR1## where R.sup.8 is hydrogen or alkyl of up to 5 carbon atoms, R.sup.9 is alkyl, haloalkenyl or haloalkynyl, each of up to 5 carbon atoms,R.sup.10 is halogen or alkyl of up to 5 carbon atoms,R.sup.11 is halogen or alkyl of up to 5 carbon atoms, A is halogen, alkyl, alkoxy, trihaloalkyl or trihaloalkoxy, each of up to 5 carbon atoms, cyano or nitro,B is alkyl, alkenyl or alkynyl, each of up to 4 carbon atoms, or an alicyclic radical of 3 to 7 carbon atoms and n is from 0 to 3,R.sup.2 is hydrogen, cyano or alkyl, alkenyl or alkynyl, each of up to 5 carbon atoms, andR.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are identical or different and each is hydrogen, halogen or alkyl, alkenyl, alkynyl or alkoxy, each of up to 5 carbon atoms, and R.sup.9 may also be alkenyl of up to 5 carbon atoms if R.sup.2 is cyano or is alkyl, alkenyl or alkynyl, each of up to 5 carbon atoms.The novel compounds are useful in pest control.

Abstract: This invention relates to a process of making flame-retardant polystyrene foams by an extrusion process in which a stabilizer of a dialkyl-tin carboxylate or a mixture of a dialkyl tin carboxylate and a barium and/or cadmium carboxylate is added to the extrusion melt.

Abstract: Acylphosphine oxide compounds of the general formula ##STR1## where R.sup.1 is alkyl, cyclohexyl, cyclopentyl, aryl which is unsubstituted or substituted by halogen, alkyl or alkoxy, or an S-containing or N-containing five-membered or six-membered heterocyclic radical,R.sup.2 has one of the meanings of R.sup.1 (but R.sup.1 and R.sup.2 may be identical or different) or is alkoxy, aryloxy or aralkoxy, or R.sup.1 and R.sup.2 together form a ring andR.sup.3 is an at least disubstituted phenyl, pyridyl, furyl or thienyl radical which carries, at least at the two carbon atoms adjacent to the linkage point of the carbonyl group, the substituents A and B, which may be identical or different, and each of which is alkyl, alkoxy or alkythio of 1 to 6 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, phenyl or halogen, or R.sup.3 is .alpha.-naphthyl substituted by A and B at least in the 2- and 8-positions or is .beta.

Abstract: A process for the preparation of 2-methyl-pentane-2,4-diol by hydrogenating diacetone-alcohol at an elevated temperature in the presence of a catalyst which has been obtained by calcining the compound of the formula Ni.sub.6 Al.sub.2 (OH).sub.16 CO.sub.3 . 4H.sub.2 O.

Abstract: A process for the preparation of pigmentary forms of phthalocyanine and of insoluble polycyclic compounds, wherein the crude pigment is milled in the presence of one or more acids which have a pK of <4.9 and are non-oxidizing under the milling conditions, until the primary particle size is .ltoreq.0.1 .mu.m, the milled material is then finished in the conventional manner in a solvent in the presence or absence of water, and the pigment is isolated.The pigments give very deep colorations and are very easily dispersible in the media in which they are used.

Abstract: Acrolein and methacrolein are prepared advantageously by oxidizing propylene or isobutylene, respectively, with an oxygen-containing gas mixture under conventional conditions over a supported catalyst possessing a firmly adhering coating, from 150 to 1,500 .mu.m thick, which contains calcined catalytic material based on molybdenum oxide and has a carrier core with a surface area of less than 15 m.sup.2 /g and a diameter of more than 100 .mu.m, if a coated catalyst is used which has been prepared by applying calcined catalytic material having a particle size of from 0.1 to 300 .mu.m, in an amount of from 1 to 40 g/min/liter of carrier and water in a weight ratio of catalytic material to water of from 1:1 to 8:1, continuously and separately from one another, each at a constant speed, at below 100.degree. C.

Abstract: Substituted pyrazole ether derivatives, and salts thereof, having a herbicidal action, herbicides containing these compounds as active ingredients, and processes for controlling the growth of unwanted plants with these compounds.

Abstract: New compounds of the formula ##STR1## which have a good fungicidal action, their manufacture, fungicides containing these compounds as active ingredients, and processes for combating fungi with these compounds.

Abstract: A coated catalyst comprising (a) an inert carrier having a particle diameter of not less than 100 .mu.m and a surface area of up to 20 m.sup.2 /g and (b) a coating which firmly adheres to the outer surface and in the edge zone, near the surface, of the carrier particles, and which contains the catalytic material, can be prepared by applying the catalytic material in the form of a powder of particle size not more than 300 .mu.

Abstract: The manufacture of substantially pure 4-amino-5-chloro-1-phenylpyridaz-6-one by reaction of 4,5-dichloro-1-phenylpyridaz-6-one with ammonia in the presence of phenol-4-sulfonic acid.

Abstract: A device, provided on a recording/reproducing apparatus, for adjusting and fixing a detecting means relative to the index mark on a recording disc, which device comprises a holding device for the detecting means, the position of which can be altered and which can be aligned and fixed relative to the index mark, the holding device consisting of a slidably mounted member made of a suitable material and having at least one elongated hole, and of a spring which exerts a biassing force on the slidably mounted member which moves on an arcuate path.

Abstract: A fireproofing material based on alkali metal silicates and containing from 20 to 60 percent by weight of water, which additionally contains from 1 to 10 percent by weight of a borate or an aluminate, preferably sodium aluminate, to improve the aging resistance. The fireproofing material can be used to insulate apertures and passages in building structures against the passage of fire and smoke, and can also be used as a fireproof glass.

Abstract: Novel .alpha.-haloalkylcarbamic acid halides, and a process for the preparation of .alpha.-haloalkylcarbamic acid halides by reacting alkenyl isocyanates with hydrogen halide. The .alpha.-haloalkylcarbamic acid halides obtained by the process of the invention are valuable starting materials for the preparation of surface-coating raw materials, textile coating agents, dyes, drugs and crop protection agents.